chore: bump version

Reviewed-on: #11

.github/workflows/android.yml

@@ -0,0 +1,45 @@
+name: Build and Release
+
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+          cache: gradle
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Decode Keystore
+        run: |
+          # Decodes the Base64 string from secrets to a physical file
+          echo "${{ secrets.KEYSTORE_BASE64 }}" | base64 --decode > composeApp/release.jks
+
+      - name: Build APK
+        run: ./gradlew :composeApp:assembleRelease
+        env:
+          KEYSTORE_PATH: release.jks
+          KEYSTORE_PASSWORD: ${{ secrets.KEYSTORE_PASSWORD }}
+          KEY_ALIAS: ${{ secrets.KEY_ALIAS }}
+          KEY_PASSWORD: ${{ secrets.KEY_PASSWORD }}
+
+      - name: Gitea Release
+        uses: akkuman/gitea-release-action@v1
+        with:
+          files: "composeApp/build/outputs/apk/release/*.apk"
+          server_url: "https://git.reya.su/"
+          repository: "reya/coop-mobile"
+          token: ${{ secrets.GITEA_TOKEN }}

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,39 +1,16 @@
-This is a Kotlin Multiplatform project targeting Android, iOS.
+Coop is a simple, fast, and reliable nostr client for secure messaging across all platforms.
 
-* [/composeApp](./composeApp/src) is for code that will be shared across your Compose Multiplatform applications.
+### License
-  It contains several subfolders:
-  - [commonMain](./composeApp/src/commonMain/kotlin) is for code that’s common for all targets.
-  - Other folders are for Kotlin code that will be compiled for only the platform indicated in the folder name.
-    For example, if you want to use Apple’s CoreCrypto for the iOS part of your Kotlin app,
-    the [iosMain](./composeApp/src/iosMain/kotlin) folder would be the right place for such calls.
-    Similarly, if you want to edit the Desktop (JVM) specific part, the [jvmMain](./composeApp/src/jvmMain/kotlin)
-    folder is the appropriate location.
 
-* [/iosApp](./iosApp/iosApp) contains iOS applications. Even if you’re sharing your UI with Compose Multiplatform,
+Copyright (C) 2026 Ren Amamiya & other Coop contributors
-  you need this entry point for your iOS app. This is also where you should add SwiftUI code for your project.
 
-* [/shared](./shared/src) is for the code that will be shared between all targets in the project.
+This program is free software: you can redistribute it and/or modify it under the terms of the GNU
-  The most important subfolder is [commonMain](./shared/src/commonMain/kotlin). If preferred, you
+General Public License as published by the Free Software Foundation, either version 3 of the
-  can add code to the platform-specific folders here too.
+License, or (at your option) any later version.
 
-### Build and Run Android Application
+This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
+even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
 
-To build and run the development version of the Android app, use the run configuration from the run widget
+You should have received a copy of the GNU General Public License along with this program. If not,
-in your IDE’s toolbar or build it directly from the terminal:
+see https://www.gnu.org/licenses/.
-- on macOS/Linux
-  ```shell
-  ./gradlew :composeApp:assembleDebug
-  ```
-- on Windows
-  ```shell
-  .\gradlew.bat :composeApp:assembleDebug
-  ```
-
-### Build and Run iOS Application
-
-To build and run the development version of the iOS app, use the run configuration from the run widget
-in your IDE’s toolbar or open the [/iosApp](./iosApp) directory in Xcode and run it from there.
-
----
-
-Learn more about [Kotlin Multiplatform](https://www.jetbrains.com/help/kotlin-multiplatform-dev/get-started.html)…

composeApp/build.gradle.kts

@@ -1,4 +1,3 @@
-import org.jetbrains.compose.desktop.application.dsl.TargetFormat
 import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 
 plugins {
@@ -6,6 +5,7 @@ plugins {
     alias(libs.plugins.androidApplication)
     alias(libs.plugins.composeMultiplatform)
     alias(libs.plugins.composeCompiler)
+    kotlin("plugin.serialization") version libs.versions.kotlin.get()
 }
 
 kotlin {
@@ -19,6 +19,16 @@ kotlin {
         androidMain.dependencies {
             implementation(libs.compose.uiToolingPreview)
             implementation(libs.androidx.activity.compose)
+            implementation(libs.androidx.lifecycle.process)
+            implementation(libs.androidx.lifecycle.runtimeCompose)
+            implementation(libs.jetbrains.navigation3.ui)
+            implementation(libs.jetbrains.lifecycle.viewmodelNavigation3)
+            implementation(libs.androidx.core.splashscreen)
+            implementation("su.reya:nostr-sdk-kmp:0.2.3")
+            implementation("io.coil-kt.coil3:coil-compose:3.4.0")
+            implementation("io.coil-kt.coil3:coil-network-okhttp:3.4.0")
+            implementation("io.github.kalinjul.easyqrscan:scanner:0.7.0")
+            implementation("io.github.alexzhirkevich:qrose:1.1.2")
         }
         commonMain.dependencies {
             implementation(libs.compose.runtime)
@@ -29,6 +39,8 @@ kotlin {
             implementation(libs.compose.uiToolingPreview)
             implementation(libs.androidx.lifecycle.viewmodelCompose)
             implementation(libs.androidx.lifecycle.runtimeCompose)
+            implementation(libs.androidx.datastore.preferences)
+            implementation(libs.androidx.datastore)
             implementation(projects.shared)
         }
         commonTest.dependencies {
@@ -41,12 +53,23 @@ android {
     namespace = "su.reya.coop"
     compileSdk = libs.versions.android.compileSdk.get().toInt()
 
+    base.archivesName.set("coop")
+
+    signingConfigs {
+        create("release") {
+            val path = System.getenv("KEYSTORE_PATH")
+            storeFile = path?.let { file(it) }
+            storePassword = System.getenv("KEYSTORE_PASSWORD")
+            keyAlias = System.getenv("KEY_ALIAS")
+            keyPassword = System.getenv("KEY_PASSWORD")
+        }
+    }
     defaultConfig {
         applicationId = "su.reya.coop"
         minSdk = libs.versions.android.minSdk.get().toInt()
         targetSdk = libs.versions.android.targetSdk.get().toInt()
         versionCode = 1
-        versionName = "1.0"
+        versionName = "0.1.5"
     }
     packaging {
         resources {
@@ -55,7 +78,13 @@ android {
     }
     buildTypes {
         getByName("release") {
-            isMinifyEnabled = false
+            isMinifyEnabled = true
+            isShrinkResources = true
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro",
+            )
+            signingConfig = signingConfigs.getByName("release")
         }
     }
     compileOptions {

composeApp/proguard-rules.pro

@@ -0,0 +1,11 @@
+-dontwarn com.sun.jna.**
+
+-keep class com.sun.jna.** { *; }
+-keep class * extends com.sun.jna.Structure { *; }
+-keep class * extends com.sun.jna.Library { *; }
+-keep class * extends com.sun.jna.Callback { *; }
+
+-keep class rust.nostr.sdk.** { *; }
+-keep class su.reya.nostr.** { *; }
+
+-keepattributes Signature, InnerClasses, EnclosingMethod, RuntimeVisibleAnnotations

composeApp/src/androidMain/AndroidManifest.xml

@@ -1,6 +1,16 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
+    <uses-feature android:name="android.hardware.camera" />
+    <uses-feature
+        android:name="android.hardware.camera.autofocus"
+        android:required="false" />
+
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_DATA_SYNC" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
@@ -8,15 +18,40 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@android:style/Theme.Material.Light.NoActionBar">
+
         <activity
+            android:name=".CrashActivity"
+            android:exported="false"
+            android:process=":crash_handler"
+            android:theme="@android:style/Theme.Material.Light.NoActionBar" />
+
+        <activity
+            android:name=".MainActivity"
             android:exported="true"
-            android:name=".MainActivity">
+            android:theme="@style/Theme.App.Starting">
+
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+
+                <data
+                    android:host="chat"
+                    android:scheme="coop" />
+            </intent-filter>
         </activity>
+
+        <service
+            android:name=".NostrForegroundService"
+            android:enabled="true"
+            android:exported="false"
+            android:foregroundServiceType="dataSync" />
     </application>
 
 </manifest>

composeApp/src/androidMain/composeResources/drawable/coop.xml

@@ -0,0 +1,17 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="750dp"
+    android:height="750dp"
+    android:viewportWidth="750"
+    android:viewportHeight="750">
+  <path
+      android:pathData="M353.02,681C488.9,681 599.05,570.85 599.05,434.98C599.05,422.63 589.03,412.61 576.68,412.61H129.37C117.01,412.61 107,422.63 107,434.98C107,570.85 217.15,681 353.02,681Z"
+      android:fillColor="#000000"
+      android:fillType="evenOdd"/>
+  <path
+      android:pathData="M461.72,151.67L317.71,156.11C317.71,156.11 307.55,142.16 308.32,132.29C309.29,119.83 317.72,109.73 328.88,105.93C328.22,103.04 327.53,100.13 327.77,97.03C329.07,80.3 343.74,67.8 360.51,69.09C370.4,69.85 378.36,75.51 383.33,83.23C389.44,76.36 398.21,72.01 408.1,72.77C423.68,73.97 435.15,86.83 435.69,102.04C437.83,101.74 439.89,101.08 442.14,101.26C458.92,102.55 471.44,117.15 470.14,133.88C469.51,142.02 461.72,151.67 461.72,151.67Z"
+      android:fillColor="#000000"/>
+  <path
+      android:pathData="M150.95,389.09C150.95,253.21 261.1,143.06 396.98,143.06C532.84,143.06 643,253.21 643,389.09C643,401.44 632.98,411.45 620.63,411.45H173.32C160.96,411.45 150.95,401.44 150.95,389.09ZM505.67,259.28C504.32,258.9 502.97,258.71 501.6,258.71C500.23,258.71 498.88,258.9 497.54,259.28C496.19,259.66 494.89,260.23 493.62,260.98C492.36,261.73 491.16,262.65 490.02,263.74C488.88,264.83 487.83,266.07 486.86,267.45C485.89,268.84 485.03,270.35 484.27,271.98C483.51,273.61 482.87,275.33 482.34,277.14C481.82,278.95 481.43,280.82 481.16,282.74C480.89,284.66 480.76,286.6 480.76,288.57C480.76,290.53 480.89,292.47 481.16,294.39C481.43,296.31 481.82,298.17 482.34,299.99C482.87,301.8 483.51,303.52 484.27,305.15C485.03,306.78 485.89,308.29 486.86,309.67C487.83,311.06 488.88,312.3 490.02,313.39C491.16,314.48 492.36,315.4 493.62,316.14C494.89,316.89 496.19,317.46 497.54,317.85C498.88,318.23 500.23,318.42 501.6,318.42C502.97,318.42 504.32,318.23 505.67,317.85C507.01,317.46 508.31,316.89 509.57,316.14C510.84,315.4 512.05,314.48 513.18,313.39C514.32,312.3 515.38,311.06 516.34,309.67C517.31,308.29 518.17,306.78 518.93,305.15C519.7,303.52 520.33,301.8 520.86,299.99C521.38,298.17 521.78,296.31 522.04,294.39C522.31,292.47 522.45,290.53 522.45,288.57C522.45,286.6 522.31,284.66 522.04,282.74C521.78,280.82 521.38,278.95 520.86,277.14C520.33,275.33 519.7,273.61 518.93,271.98C518.17,270.35 517.31,268.84 516.34,267.45C515.38,266.07 514.32,264.83 513.18,263.74C512.05,262.65 510.84,261.73 509.57,260.98C508.31,260.23 507.01,259.66 505.67,259.28Z"
+      android:fillColor="#000000"
+      android:fillType="evenOdd"/>
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_arrow_back.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:autoMirrored="true"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M313,520L537,744L480,800L160,480L480,160L537,216L313,440L800,440L800,520L313,520Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_arrow_next.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:autoMirrored="true"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M647,520L160,520L160,440L647,440L423,216L480,160L800,480L480,800L423,744L647,520Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_avatar.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M234,684Q285,645 348,622.5Q411,600 480,600Q549,600 612,622.5Q675,645 726,684Q761,643 780.5,591Q800,539 800,480Q800,347 706.5,253.5Q613,160 480,160Q347,160 253.5,253.5Q160,347 160,480Q160,539 179.5,591Q199,643 234,684ZM380.5,479.5Q340,439 340,380Q340,321 380.5,280.5Q421,240 480,240Q539,240 579.5,280.5Q620,321 620,380Q620,439 579.5,479.5Q539,520 480,520Q421,520 380.5,479.5ZM480,880Q397,880 324,848.5Q251,817 197,763Q143,709 111.5,636Q80,563 80,480Q80,397 111.5,324Q143,251 197,197Q251,143 324,111.5Q397,80 480,80Q563,80 636,111.5Q709,143 763,197Q817,251 848.5,324Q880,397 880,480Q880,563 848.5,636Q817,709 763,763Q709,817 636,848.5Q563,880 480,880ZM580,784.5Q627,769 666,740Q627,711 580,695.5Q533,680 480,680Q427,680 380,695.5Q333,711 294,740Q333,769 380,784.5Q427,800 480,800Q533,800 580,784.5ZM523,423Q540,406 540,380Q540,354 523,337Q506,320 480,320Q454,320 437,337Q420,354 420,380Q420,406 437,423Q454,440 480,440Q506,440 523,423ZM480,380Q480,380 480,380Q480,380 480,380Q480,380 480,380Q480,380 480,380Q480,380 480,380Q480,380 480,380Q480,380 480,380Q480,380 480,380ZM480,740Q480,740 480,740Q480,740 480,740Q480,740 480,740Q480,740 480,740Q480,740 480,740Q480,740 480,740Q480,740 480,740Q480,740 480,740Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_badge.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M160,880Q127,880 103.5,856.5Q80,833 80,800L80,360Q80,327 103.5,303.5Q127,280 160,280L360,280L360,160Q360,127 383.5,103.5Q407,80 440,80L520,80Q553,80 576.5,103.5Q600,127 600,160L600,280L800,280Q833,280 856.5,303.5Q880,327 880,360L880,800Q880,833 856.5,856.5Q833,880 800,880L160,880ZM160,800L800,800Q800,800 800,800Q800,800 800,800L800,360Q800,360 800,360Q800,360 800,360L600,360L600,360Q600,393 576.5,416.5Q553,440 520,440L440,440Q407,440 383.5,416.5Q360,393 360,360L360,360L160,360Q160,360 160,360Q160,360 160,360L160,800Q160,800 160,800Q160,800 160,800ZM240,720L480,720L480,702Q480,685 470.5,670.5Q461,656 444,648Q424,639 403.5,634.5Q383,630 360,630Q337,630 316.5,634.5Q296,639 276,648Q259,656 249.5,670.5Q240,685 240,702L240,720ZM560,660L720,660L720,600L560,600L560,660ZM402.5,582.5Q420,565 420,540Q420,515 402.5,497.5Q385,480 360,480Q335,480 317.5,497.5Q300,515 300,540Q300,565 317.5,582.5Q335,600 360,600Q385,600 402.5,582.5ZM560,540L720,540L720,480L560,480L560,540ZM440,360L520,360L520,160L440,160L440,360ZM480,580Q480,580 480,580Q480,580 480,580L480,580Q480,580 480,580Q480,580 480,580L480,580L480,580Q480,580 480,580Q480,580 480,580L480,580Q480,580 480,580Q480,580 480,580L480,580L480,580Q480,580 480,580Q480,580 480,580L480,580Q480,580 480,580Q480,580 480,580Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_bitcoin.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M360,840L360,760L240,760L240,680L320,680L320,280L240,280L240,200L360,200L360,120L440,120L440,200L520,200L520,120L600,120L600,205L600,205Q652,219 686,261.5Q720,304 720,360Q720,389 710,415.5Q700,442 682,463Q717,484 738.5,520Q760,556 760,600Q760,666 713,713Q666,760 600,760L600,760L600,840L520,840L520,760L440,760L440,840L360,840ZM400,440L560,440Q593,440 616.5,416.5Q640,393 640,360Q640,327 616.5,303.5Q593,280 560,280L400,280L400,440ZM400,680L600,680Q633,680 656.5,656.5Q680,633 680,600Q680,567 656.5,543.5Q633,520 600,520L400,520L400,680Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_chat.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M80,880L80,160Q80,127 103.5,103.5Q127,80 160,80L800,80Q833,80 856.5,103.5Q880,127 880,160L880,640Q880,673 856.5,696.5Q833,720 800,720L240,720L80,880ZM206,640L800,640Q800,640 800,640Q800,640 800,640L800,160Q800,160 800,160Q800,160 800,160L160,160Q160,160 160,160Q160,160 160,160L160,685L206,640ZM160,640L160,640L160,160Q160,160 160,160Q160,160 160,160L160,160Q160,160 160,160Q160,160 160,160L160,640Q160,640 160,640Q160,640 160,640Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_close.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?attr/colorControlNormal"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M256,760L200,704L424,480L200,256L256,200L480,424L704,200L760,256L536,480L760,704L704,760L480,536L256,760Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_close_small.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M336,680L280,624L424,480L280,337L336,281L480,425L623,281L679,337L535,480L679,624L623,680L480,536L336,680Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_globe.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M480,880Q397,880 324,848.5Q251,817 197,763Q143,709 111.5,636Q80,563 80,480Q80,397 111.5,324Q143,251 197,197Q251,143 324,111.5Q397,80 480,80Q563,80 636,111.5Q709,143 763,197Q817,251 848.5,324Q880,397 880,480Q880,563 848.5,636Q817,709 763,763Q709,817 636,848.5Q563,880 480,880ZM480,800Q614,800 707,707Q800,614 800,480Q800,473 799.5,465.5Q799,458 799,453Q794,482 772,501Q750,520 720,520L640,520Q607,520 583.5,496.5Q560,473 560,440L560,400L400,400L400,320Q400,287 423.5,263.5Q447,240 480,240L520,240L520,240Q520,217 532.5,199.5Q545,182 563,171Q543,166 522.5,163Q502,160 480,160Q346,160 253,253Q160,346 160,480Q160,480 160,480Q160,480 160,480L360,480Q426,480 473,527Q520,574 520,640L520,680L400,680L400,790Q420,795 439.5,797.5Q459,800 480,800Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_new_chat.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:autoMirrored="true"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M120,800L120,200Q120,167 143.5,143.5Q167,120 200,120L680,120Q713,120 736.5,143.5Q760,167 760,200L760,403Q750,401 740,400.5Q730,400 720,400Q710,400 700,400.5Q690,401 680,403L680,200Q680,200 680,200Q680,200 680,200L200,200Q200,200 200,200Q200,200 200,200L200,600L483,600Q481,610 480.5,620Q480,630 480,640Q480,650 480.5,660Q481,670 483,680L240,680L120,800ZM280,360L600,360L600,280L280,280L280,360ZM280,520L480,520L480,440L280,440L280,520ZM680,800L680,680L560,680L560,600L680,600L680,480L760,480L760,600L880,600L880,680L760,680L760,800L680,800ZM200,600L200,600L200,200Q200,200 200,200Q200,200 200,200L200,200Q200,200 200,200Q200,200 200,200L200,403Q200,453 200,501.5Q200,550 200,600Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_notification_settings.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M480,471L480,471Q480,471 480,471Q480,471 480,471Q480,471 480,471Q480,471 480,471Q480,471 480,471Q480,471 480,471L480,471ZM480,880Q447,880 423.5,856.5Q400,833 400,800L560,800Q560,833 536.5,856.5Q513,880 480,880ZM160,760L160,680L240,680L240,400Q240,316 290.5,251Q341,186 422,167Q412,189 406.5,213Q401,237 399,262Q364,283 342,319Q320,355 320,400L320,680L640,680L640,558Q660,561 680,561Q700,561 720,558L720,680L800,680L800,760L160,760ZM640,480L628,420Q616,415 605.5,409.5Q595,404 584,396L526,414L486,346L532,306Q530,293 530,280Q530,267 532,254L486,214L526,146L584,164Q595,156 605.5,150.5Q616,145 628,140L640,80L720,80L732,140Q744,145 754.5,150.5Q765,156 776,164L834,146L874,214L828,254Q830,267 830,280Q830,293 828,306L874,346L834,414L776,396Q765,404 754.5,409.5Q744,415 732,420L720,480L640,480ZM736.5,336.5Q760,313 760,280Q760,247 736.5,223.5Q713,200 680,200Q647,200 623.5,223.5Q600,247 600,280Q600,313 623.5,336.5Q647,360 680,360Q713,360 736.5,336.5Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_plus.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M440,520L200,520L200,440L440,440L440,200L520,200L520,440L760,440L760,520L520,520L520,760L440,760L440,520Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_qr.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M520,840L520,760L600,760L600,840L520,840ZM440,760L440,560L520,560L520,760L440,760ZM760,640L760,480L840,480L840,640L760,640ZM680,480L680,400L760,400L760,480L680,480ZM200,560L200,480L280,480L280,560L200,560ZM120,480L120,400L200,400L200,480L120,480ZM480,200L480,120L560,120L560,200L480,200ZM180,300L300,300L300,180L180,180L180,300ZM120,360L120,120L360,120L360,360L120,360ZM180,780L300,780L300,660L180,660L180,780ZM120,840L120,600L360,600L360,840L120,840ZM660,300L780,300L780,180L660,180L660,300ZM600,360L600,120L840,120L840,360L600,360ZM680,840L680,720L600,720L600,640L760,640L760,760L840,760L840,840L680,840ZM520,560L520,480L680,480L680,560L520,560ZM360,560L360,480L280,480L280,400L520,400L520,480L440,480L440,560L360,560ZM400,360L400,200L480,200L480,280L560,280L560,360L400,360ZM210,270L210,210L270,210L270,270L210,270ZM210,750L210,690L270,690L270,750L210,750ZM690,270L690,210L750,210L750,270L690,270Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_scanner.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M80,280L80,80L280,80L280,160L160,160L160,280L80,280ZM80,880L80,680L160,680L160,800L280,800L280,880L80,880ZM680,880L680,800L800,800L800,680L880,680L880,880L680,880ZM800,280L800,160L680,160L680,80L880,80L880,280L800,280ZM700,700L760,700L760,760L700,760L700,700ZM700,580L760,580L760,640L700,640L700,580ZM640,640L700,640L700,700L640,700L640,640ZM580,700L640,700L640,760L580,760L580,700ZM520,640L580,640L580,700L520,700L520,640ZM640,520L700,520L700,580L640,580L640,520ZM580,580L640,580L640,640L580,640L580,580ZM520,520L580,520L580,580L520,580L520,520ZM760,200L760,440L520,440L520,200L760,200ZM440,520L440,760L200,760L200,520L440,520ZM440,200L440,440L200,440L200,200L440,200ZM380,700L380,580L260,580L260,700L380,700ZM380,380L380,260L260,260L260,380L380,380ZM700,380L700,260L580,260L580,380L700,380Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_search.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M784,840L532,588Q502,612 463,626Q424,640 380,640Q271,640 195.5,564.5Q120,489 120,380Q120,271 195.5,195.5Q271,120 380,120Q489,120 564.5,195.5Q640,271 640,380Q640,424 626,463Q612,502 588,532L840,784L784,840ZM380,560Q455,560 507.5,507.5Q560,455 560,380Q560,305 507.5,252.5Q455,200 380,200Q305,200 252.5,252.5Q200,305 200,380Q200,455 252.5,507.5Q305,560 380,560Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_send.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M440,800L440,313L216,537L160,480L480,160L800,480L744,537L520,313L520,800L440,800Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_share.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M680,880Q630,880 595,845Q560,810 560,760Q560,754 563,732L282,568Q266,583 245,591.5Q224,600 200,600Q150,600 115,565Q80,530 80,480Q80,430 115,395Q150,360 200,360Q224,360 245,368.5Q266,377 282,392L563,228Q561,221 560.5,214.5Q560,208 560,200Q560,150 595,115Q630,80 680,80Q730,80 765,115Q800,150 800,200Q800,250 765,285Q730,320 680,320Q656,320 635,311.5Q614,303 598,288L317,452Q319,459 319.5,465.5Q320,472 320,480Q320,488 319.5,494.5Q319,501 317,508L598,672Q614,657 635,648.5Q656,640 680,640Q730,640 765,675Q800,710 800,760Q800,810 765,845Q730,880 680,880ZM680,800Q697,800 708.5,788.5Q720,777 720,760Q720,743 708.5,731.5Q697,720 680,720Q663,720 651.5,731.5Q640,743 640,760Q640,777 651.5,788.5Q663,800 680,800ZM200,520Q217,520 228.5,508.5Q240,497 240,480Q240,463 228.5,451.5Q217,440 200,440Q183,440 171.5,451.5Q160,463 160,480Q160,497 171.5,508.5Q183,520 200,520ZM708.5,228.5Q720,217 720,200Q720,183 708.5,171.5Q697,160 680,160Q663,160 651.5,171.5Q640,183 640,200Q640,217 651.5,228.5Q663,240 680,240Q697,240 708.5,228.5ZM680,760Q680,760 680,760Q680,760 680,760Q680,760 680,760Q680,760 680,760Q680,760 680,760Q680,760 680,760Q680,760 680,760Q680,760 680,760ZM200,480Q200,480 200,480Q200,480 200,480Q200,480 200,480Q200,480 200,480Q200,480 200,480Q200,480 200,480Q200,480 200,480Q200,480 200,480ZM680,200Q680,200 680,200Q680,200 680,200Q680,200 680,200Q680,200 680,200Q680,200 680,200Q680,200 680,200Q680,200 680,200Q680,200 680,200Z" />
+</vector>

composeApp/src/androidMain/kotlin/su/reya/coop/App.kt

@@ -1,49 +1,294 @@
 package su.reya.coop
 
-import androidx.compose.animation.AnimatedVisibility
+import android.app.Activity
-import androidx.compose.foundation.Image
+import android.content.Intent
-import androidx.compose.foundation.background
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.BackHandler
+import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.safeContentPadding
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
 import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.MaterialExpressiveTheme
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.ModalBottomSheet
+import androidx.compose.material3.MotionScheme
+import androidx.compose.material3.SnackbarHostState
 import androidx.compose.material3.Text
-import androidx.compose.runtime.*
+import androidx.compose.material3.Typography
+import androidx.compose.material3.darkColorScheme
+import androidx.compose.material3.dynamicDarkColorScheme
+import androidx.compose.material3.dynamicLightColorScheme
+import androidx.compose.material3.expressiveLightColorScheme
+import androidx.compose.material3.rememberModalBottomSheetState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.runtime.staticCompositionLocalOf
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.platform.LocalContext
-import org.jetbrains.compose.resources.painterResource
+import androidx.compose.ui.text.font.FontStyle
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.core.util.Consumer
+import androidx.lifecycle.viewmodel.navigation3.rememberViewModelStoreNavEntryDecorator
+import androidx.navigation3.runtime.NavBackStack
+import androidx.navigation3.runtime.NavKey
+import androidx.navigation3.runtime.entryProvider
+import androidx.navigation3.runtime.rememberNavBackStack
+import androidx.navigation3.runtime.rememberSaveableStateHolderNavEntryDecorator
+import androidx.navigation3.ui.NavDisplay
+import kotlinx.coroutines.launch
+import su.reya.coop.screens.ChatScreen
+import su.reya.coop.screens.HomeScreen
+import su.reya.coop.screens.ImportScreen
+import su.reya.coop.screens.MyQrScreen
+import su.reya.coop.screens.NewChatScreen
+import su.reya.coop.screens.NewIdentityScreen
+import su.reya.coop.screens.OnboardingScreen
+import su.reya.coop.screens.ProfileScreen
+import su.reya.coop.screens.RelayScreen
+import su.reya.coop.screens.ScanScreen
 
-import coop.composeapp.generated.resources.Res
+val LocalNostrViewModel = staticCompositionLocalOf<NostrViewModel> {
-import coop.composeapp.generated.resources.compose_multiplatform
+    error("No NostrViewModel provided")
+}
 
+val LocalSnackbarHostState = staticCompositionLocalOf<SnackbarHostState> {
+    error("No SnackbarHostState provided")
+}
+
+val LocalNavigator = staticCompositionLocalOf<Navigator> {
+    error("No Navigator provided")
+}
+
+val LocalScanResult = staticCompositionLocalOf<QrScanResult> {
+    error("No QrScanResult provided")
+}
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
 @Composable
-@Preview
+fun App(viewModel: NostrViewModel) {
-fun App() {
+    val context = LocalContext.current
-    MaterialTheme {
+    val activity = context as? ComponentActivity
-        var showContent by remember { mutableStateOf(false) }
+    val scope = rememberCoroutineScope()
+    val sheetState = rememberModalBottomSheetState()
+    val backStack = rememberNavBackStack(Screen.Home)
+    val navigator = remember(backStack) { Navigator(backStack) }
+    val qrScanResult = remember { QrScanResult() }
+
+    val signerRequired by viewModel.signerRequired.collectAsState(initial = null)
+    val isRelayListEmpty by viewModel.isRelayListEmpty.collectAsState()
+
+    // Snackbar
+    val snackbarHostState = remember { SnackbarHostState() }
+
+    // Check if dark theme enabled
+    val darkMode = isSystemInDarkTheme()
+
+    // Enabled the dynamic color scheme
+    val colorScheme = when {
+        // Enable the dynamic color scheme for Android 12+
+        android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.S -> {
+            if (isSystemInDarkTheme()) dynamicDarkColorScheme(context) else dynamicLightColorScheme(
+                context
+            )
+        }
+        // When dark mode is enabled, use the dark color scheme
+        darkMode -> darkColorScheme()
+        // Fallback to the light color scheme
+        else -> expressiveLightColorScheme()
+    }
+
+    BackHandler(enabled = backStack.size > 1) {
+        navigator.goBack()
+    }
+
+    LaunchedEffect(Unit) {
+        viewModel.errorEvents.collect { message ->
+            snackbarHostState.showSnackbar(message)
+        }
+    }
+
+    LaunchedEffect(activity) {
+        activity?.let {
+            fun handleIntent(intent: Intent) {
+                val screen = Screen.fromIntent(intent)
+                // Prevent pushing the same screen
+                if (screen != null && backStack.lastOrNull() != screen) {
+                    navigator.navigate(screen)
+                }
+            }
+
+            // Handle the intent that started the Activity
+            handleIntent(it.intent)
+
+            // Handle new intents while the Activity is running
+            val listener = Consumer<Intent> { intent -> handleIntent(intent) }
+            it.addOnNewIntentListener(listener)
+        }
+    }
+
+    LaunchedEffect(backStack.size) {
+        if (backStack.isEmpty()) {
+            (context as? Activity)?.finish()
+        }
+    }
+
+    LaunchedEffect(signerRequired) {
+        if (signerRequired == true && backStack.last() != Screen.Onboarding) {
+            backStack.clear()
+            backStack.add(Screen.Onboarding)
+        }
+    }
+
+    MaterialExpressiveTheme(
+        colorScheme = colorScheme,
+        typography = Typography(),
+        motionScheme = MotionScheme.expressive(),
+    ) {
+        CompositionLocalProvider(
+            LocalNostrViewModel provides viewModel,
+            LocalSnackbarHostState provides snackbarHostState,
+            LocalNavigator provides navigator,
+            LocalScanResult provides qrScanResult,
+        ) {
+            NavDisplay(
+                backStack = backStack,
+                onBack = {
+                    if (backStack.size > 1) {
+                        backStack.removeLastOrNull()
+                    } else {
+                        (context as? Activity)?.finish()
+                    }
+                },
+                entryDecorators = listOf(
+                    rememberSaveableStateHolderNavEntryDecorator(),
+                    rememberViewModelStoreNavEntryDecorator()
+                ),
+                entryProvider = entryProvider {
+                    entry<Screen.Home> {
+                        HomeScreen()
+                    }
+                    entry<Screen.Onboarding> {
+                        OnboardingScreen()
+                    }
+                    entry<Screen.Import> {
+                        ImportScreen()
+                    }
+                    entry<Screen.NewIdentity> {
+                        NewIdentityScreen()
+                    }
+                    entry<Screen.Chat> { key ->
+                        ChatScreen(id = key.id)
+                    }
+                    entry<Screen.NewChat> {
+                        NewChatScreen()
+                    }
+                    entry<Screen.Profile> { key ->
+                        ProfileScreen(pubkey = key.pubkey)
+                    }
+                    entry<Screen.Scan> {
+                        ScanScreen()
+                    }
+                    entry<Screen.MyQr> {
+                        MyQrScreen()
+                    }
+                    entry<Screen.Relay> {
+                        RelayScreen()
+                    }
+                }
+            )
+
+            // Show the relay setup dialog if the msg relay list is empty
+            if (isRelayListEmpty) {
+                ModalBottomSheet(
+                    onDismissRequest = { viewModel.dismissRelayWarning() },
+                    sheetState = sheetState,
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                ) {
                     Column(
                         modifier = Modifier
-                .background(MaterialTheme.colorScheme.primaryContainer)
+                            .fillMaxWidth()
-                .safeContentPadding()
+                            .fillMaxHeight(0.5f)
-                .fillMaxSize(),
+                            .padding(24.dp),
                         horizontalAlignment = Alignment.CenterHorizontally,
                     ) {
-            Button(onClick = { showContent = !showContent }) {
+                        Text(
-                Text("Click me!")
+                            text = "Messaging Relays are required",
+                            style = MaterialTheme.typography.headlineSmallEmphasized.copy(
+                                fontWeight = FontWeight.SemiBold,
+                            ),
+                            textAlign = TextAlign.Center,
+                            color = MaterialTheme.colorScheme.primary,
+                        )
+                        Spacer(modifier = Modifier.size(8.dp))
+                        Text(
+                            text = "Coop cannot found your messaging relays. To send and receive messages on Coop, you need to set up at least one messaging relay.",
+                            style = MaterialTheme.typography.bodyLarge
+                        )
+                        Spacer(modifier = Modifier.size(8.dp))
+                        Text(
+                            text = "Please click the button below to continue with the default set of relays. You can always change them later in the settings.",
+                            style = MaterialTheme.typography.bodyLarge.copy(
+                                fontStyle = FontStyle.Italic,
+                            ),
+                        )
+                        Spacer(modifier = Modifier.weight(1f))
+                        Button(
+                            onClick = {
+                                scope.launch {
+                                    viewModel.useDefaultMsgRelayList()
+                                    sheetState.hide()
                                 }
-            AnimatedVisibility(showContent) {
+                            },
-                val greeting = remember { Greeting().greet() }
+                            modifier = Modifier
-                Column(
+                                .fillMaxWidth()
-                    modifier = Modifier.fillMaxWidth(),
+                                .height(ButtonDefaults.MediumContainerHeight),
-                    horizontalAlignment = Alignment.CenterHorizontally,
                         ) {
-                    Image(painterResource(Res.drawable.compose_multiplatform), null)
+                            Text(
-                    Text("Compose: $greeting")
+                                text = "Continue",
+                                style = MaterialTheme.typography.titleMediumEmphasized,
+                            )
+                        }
+                    }
                 }
             }
         }
     }
 }
+
+class Navigator(private val backStack: NavBackStack<NavKey>) {
+    fun navigate(route: NavKey) {
+        backStack.add(route)
+    }
+
+    fun goBack() {
+        if (backStack.size > 1) {
+            backStack.removeAt(backStack.lastIndex)
+        }
+    }
+}
+
+class QrScanResult {
+    var content by mutableStateOf<String?>(null)
+
+    fun clear() {
+        content = null
+    }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/CrashActivity.kt

@@ -0,0 +1,108 @@
+package su.reya.coop
+
+import android.content.ClipData
+import android.content.ClipboardManager
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.Button
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.FilledTonalButton
+import androidx.compose.material3.MaterialExpressiveTheme
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import kotlin.system.exitProcess
+
+class CrashActivity : ComponentActivity() {
+    @OptIn(ExperimentalMaterial3ExpressiveApi::class)
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        val errorText = intent.getStringExtra("error") ?: "Unknown error"
+
+        setContent {
+            MaterialExpressiveTheme {
+                Scaffold(
+                    content = { innerPadding ->
+                        Surface(
+                            modifier = Modifier
+                                .fillMaxSize()
+                                .padding(innerPadding),
+                            color = MaterialTheme.colorScheme.background
+                        ) {
+                            Column(
+                                modifier = Modifier
+                                    .fillMaxSize()
+                                    .padding(16.dp),
+                                verticalArrangement = Arrangement.spacedBy(16.dp)
+                            ) {
+                                Column {
+                                    Text(
+                                        "App Crashed",
+                                        style = MaterialTheme.typography.titleMediumEmphasized,
+                                        color = MaterialTheme.colorScheme.error
+                                    )
+                                    Text(
+                                        "Please copy the log below and send it to the developer.",
+                                        style = MaterialTheme.typography.bodySmall
+                                    )
+                                }
+                                Box(
+                                    modifier = Modifier
+                                        .weight(1f)
+                                        .fillMaxWidth()
+                                        .verticalScroll(rememberScrollState())
+                                ) {
+                                    Text(
+                                        text = errorText,
+                                        fontFamily = FontFamily.Monospace,
+                                        fontSize = 12.sp
+                                    )
+                                }
+                                Row(
+                                    modifier = Modifier.fillMaxWidth(),
+                                    horizontalArrangement = Arrangement.spacedBy(8.dp)
+                                ) {
+                                    FilledTonalButton(
+                                        onClick = {
+                                            finish();
+                                            exitProcess(0)
+                                        },
+                                        modifier = Modifier.weight(1f)
+                                    ) {
+                                        Text("Exit")
+                                    }
+                                    Button(
+                                        onClick = {
+                                            val clipboard =
+                                                getSystemService(CLIPBOARD_SERVICE) as ClipboardManager
+                                            val data = ClipData.newPlainText("Crash Log", errorText)
+                                            clipboard.setPrimaryClip(data)
+                                        },
+                                        modifier = Modifier.weight(1f)
+                                    ) {
+                                        Text("Copy")
+                                    }
+                                }
+                            }
+                        }
+                    }
+                )
+            }
+        }
+    }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/MainActivity.kt

@@ -1,25 +1,74 @@
 package su.reya.coop
 
+import android.content.Intent
+import android.os.Build
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
-import androidx.compose.runtime.Composable
+import androidx.activity.viewModels
-import androidx.compose.ui.tooling.preview.Preview
+import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
+import su.reya.coop.coop.storage.SecretStore
+import kotlin.system.exitProcess
 
 class MainActivity : ComponentActivity() {
+    private val viewModel: NostrViewModel by viewModels {
+        object : ViewModelProvider.Factory {
+            override fun <T : ViewModel> create(modelClass: Class<T>): T {
+                val secretStore = SecretStore(this@MainActivity)
+                return NostrViewModel(NostrManager.instance, secretStore) as T
+            }
+        }
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
+        Thread.setDefaultUncaughtExceptionHandler { thread, throwable ->
+            throwable.printStackTrace()
+            android.util.Log.e(
+                "CoopCrash",
+                "Uncaught exception in thread ${thread.name}",
+                throwable
+            )
+
+            // Start the Crash Activity
+            val intent = Intent(this, CrashActivity::class.java).apply {
+                putExtra("error", throwable.stackTraceToString())
+                addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK)
+            }
+            startActivity(intent)
+
+            // Exit
+            android.os.Process.killProcess(android.os.Process.myPid())
+            exitProcess(1)
+        }
+
+        val splashScreen = installSplashScreen()
         enableEdgeToEdge()
+
         super.onCreate(savedInstanceState)
 
-        setContent {
+        val serviceIntent = Intent(this, NostrForegroundService::class.java)
-            App()
-        }
-    }
-}
 
-@Preview
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-@Composable
+            startForegroundService(serviceIntent)
-fun AppAndroidPreview() {
+        } else {
-    App()
+            startService(serviceIntent)
+        }
+
+        // Keep the splash screen visible until the signer check is complete
+        splashScreen.setKeepOnScreenCondition {
+            viewModel.signerRequired.value == null
+        }
+
+        setContent {
+            App(viewModel = viewModel)
+        }
+    }
+
+    override fun onNewIntent(intent: Intent) {
+        super.onNewIntent(intent)
+        setIntent(intent)
+    }
 }

composeApp/src/androidMain/kotlin/su/reya/coop/Navigation.kt

@@ -0,0 +1,52 @@
+package su.reya.coop
+
+import android.content.Intent
+import androidx.navigation3.runtime.NavKey
+import kotlinx.serialization.Serializable
+
+sealed interface Screen : NavKey {
+    companion object {
+        fun fromIntent(intent: Intent): Screen? {
+            val data = intent.data ?: return null
+            if (data.scheme != "coop") return null
+
+            return when (data.host) {
+                // Matches coop://chat/{id}
+                "chat" -> data.pathSegments.firstOrNull()?.toLongOrNull()?.let { Chat(it) }
+                // Matches coop://profile/{pubkey}
+                "profile" -> data.pathSegments.firstOrNull()?.let { Profile(it) }
+                else -> null
+            }
+        }
+    }
+
+    @Serializable
+    data object Home : Screen
+
+    @Serializable
+    data class Chat(val id: Long) : Screen
+
+    @Serializable
+    data class Profile(val pubkey: String) : Screen
+
+    @Serializable
+    data object NewChat : Screen
+
+    @Serializable
+    data object Onboarding : Screen
+
+    @Serializable
+    data object Import : Screen
+
+    @Serializable
+    data object NewIdentity : Screen
+
+    @Serializable
+    data object Scan : Screen
+
+    @Serializable
+    data object MyQr : Screen
+
+    @Serializable
+    data object Relay : Screen
+}

composeApp/src/androidMain/kotlin/su/reya/coop/NostrForegroundService.kt

@@ -0,0 +1,162 @@
+package su.reya.coop
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.app.Service
+import android.content.Intent
+import android.content.pm.ServiceInfo
+import android.os.Build
+import android.os.IBinder
+import android.util.Log
+import androidx.annotation.RequiresApi
+import androidx.core.app.NotificationCompat
+import androidx.core.net.toUri
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.ProcessLifecycleOwner
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.launch
+import java.io.File
+
+class NostrForegroundService : Service() {
+    private val serviceScope = CoroutineScope(Dispatchers.IO + SupervisorJob())
+    private val nostr by lazy { NostrManager.instance }
+
+    override fun onBind(intent: Intent?): IBinder? = null
+
+    private fun isUserInApp(): Boolean {
+        return ProcessLifecycleOwner.get().lifecycle.currentState.isAtLeast(Lifecycle.State.STARTED)
+    }
+
+    override fun onCreate() {
+        super.onCreate()
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            createNotificationChannel()
+        }
+        val notification = createNotification()
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+            startForeground(1, notification, ServiceInfo.FOREGROUND_SERVICE_TYPE_DATA_SYNC)
+        } else {
+            startForeground(1, notification)
+        }
+    }
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        serviceScope.launch {
+            try {
+                Log.d("Coop", "Starting Nostr in background")
+
+                // Create a database directory
+                val dbDir = File(filesDir, "nostr")
+                dbDir.mkdirs()
+
+                // Initialize Nostr client
+                nostr.init(dbDir.absolutePath)
+                // Connect to bootstrap relays
+                nostr.connectBootstrapRelays()
+                // Handle notifications
+                nostr.handleNotifications(
+                    onMetadataUpdate = { pubkey, metadata ->
+                        serviceScope.launch { nostr.emitMetadataUpdate(pubkey, metadata) }
+                    },
+                    onContactListUpdate = { contacts ->
+                        serviceScope.launch { nostr.emitContactListUpdate(contacts) }
+                    },
+                    onSubscriptionClose = {
+                        serviceScope.launch { nostr.emitSubscriptionClosed() }
+                    },
+                    onNewMessage = { event ->
+                        serviceScope.launch {
+                            if (!isUserInApp()) {
+                                showNewMessageNotification(event.roomId(), event.content())
+                            }
+                            nostr.emitNewEvent(event)
+                        }
+                    }
+                )
+            } catch (e: Exception) {
+                Log.e("Coop", "Failed to start Nostr", e)
+            }
+        }
+        return START_STICKY
+    }
+
+    @RequiresApi(Build.VERSION_CODES.O)
+    private fun createNotificationChannel() {
+        val manager = getSystemService(NotificationManager::class.java)
+
+        val serviceChannel = NotificationChannel(
+            "nostr_service",
+            "Nostr Background Status",
+            NotificationManager.IMPORTANCE_MIN
+        ).apply {
+            setShowBadge(false)
+        }
+        manager?.createNotificationChannel(serviceChannel)
+
+        val messageChannel = NotificationChannel(
+            "nostr_messages",
+            "New Messages",
+            NotificationManager.IMPORTANCE_HIGH
+        )
+        manager?.createNotificationChannel(messageChannel)
+    }
+
+    private fun createNotification(content: String? = null): Notification {
+        val builder = NotificationCompat.Builder(this, "nostr_service")
+            .setSmallIcon(R.drawable.ic_notification)
+            .setOngoing(true)
+            .setPriority(NotificationCompat.PRIORITY_MIN)
+            .setCategory(Notification.CATEGORY_SERVICE)
+
+        if (content != null) {
+            builder.setContentTitle("Coop")
+            builder.setContentText(content)
+        } else {
+            builder.setContentTitle("Coop is active")
+        }
+
+        return builder.build()
+    }
+
+    private fun showNewMessageNotification(roomId: Long, message: String) {
+        val deepLinkUri = "coop://chat/$roomId".toUri()
+
+        val intent = Intent(
+            Intent.ACTION_VIEW,
+            deepLinkUri,
+            this,
+            MainActivity::class.java
+        )
+
+        val pendingIntent = PendingIntent.getActivity(
+            this,
+            roomId.toInt(),
+            intent,
+            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+        )
+
+        val notification = NotificationCompat.Builder(this, "nostr_messages")
+            .setSmallIcon(R.drawable.ic_notification)
+            .setContentTitle("You received a new message")
+            .setContentText(message)
+            .setAutoCancel(true)
+            .setContentIntent(pendingIntent)
+            .setCategory(Notification.CATEGORY_MESSAGE)
+            .build()
+
+        val manager = getSystemService(NotificationManager::class.java)
+        manager?.notify(System.currentTimeMillis().toInt(), notification)
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        serviceScope.cancel()
+    }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/ChatScreen.kt

@@ -0,0 +1,380 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.IntrinsicSize
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.aspectRatio
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.widthIn
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Badge
+import androidx.compose.material3.BadgedBox
+import androidx.compose.material3.FilledTonalIconButton
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.IconButtonDefaults
+import androidx.compose.material3.LoadingIndicator
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextField
+import androidx.compose.material3.TextFieldDefaults
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.dp
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import coop.composeapp.generated.resources.ic_send
+import kotlinx.coroutines.flow.first
+import org.jetbrains.compose.resources.painterResource
+import rust.nostr.sdk.UnsignedEvent
+import su.reya.coop.LocalNavigator
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalSnackbarHostState
+import su.reya.coop.Screen
+import su.reya.coop.formatAsGroupHeader
+import su.reya.coop.roomId
+import su.reya.coop.shared.Avatar
+import su.reya.coop.shared.displayNameFlow
+import su.reya.coop.shared.pictureFlow
+import su.reya.coop.short
+
+@Composable
+fun ChatScreen(id: Long) {
+    val snackbarHostState = LocalSnackbarHostState.current
+    val navigator = LocalNavigator.current
+    val viewModel = LocalNostrViewModel.current
+
+    val listState = rememberLazyListState()
+    val chatRooms by viewModel.chatRooms.collectAsState()
+    val room = remember(chatRooms, id) { chatRooms.firstOrNull { it.id == id } }
+
+    if (room == null) {
+        Box(
+            modifier = Modifier.fillMaxSize(),
+            contentAlignment = Alignment.Center
+        ) {
+            LoadingIndicator()
+        }
+        return
+    }
+
+    val displayName by remember(room) { room.displayNameFlow(viewModel) }.collectAsState("Loading...")
+    val picture by remember(room) { room.pictureFlow(viewModel) }.collectAsState(null)
+
+    var text by remember { mutableStateOf("") }
+    var loading by remember { mutableStateOf(true) }
+    var newOtherMessages by remember { mutableIntStateOf(0) }
+
+    val messages = remember { mutableStateListOf<UnsignedEvent>() }
+    val groupedMessages = remember(messages.toList()) {
+        messages.groupBy { it.createdAt().formatAsGroupHeader() }
+    }
+
+    LaunchedEffect(id) {
+        // Start loading spinner
+        loading = true
+
+        // Get messages
+        val initialMessages = viewModel.getChatRoomMessages(id)
+        messages.clear()
+        messages.addAll(initialMessages)
+
+        // Get msg relays for each member
+        val results = viewModel.chatRoomConnect(id)
+        results.forEach { (member, relays) ->
+            if (relays.isNotEmpty()) {
+                val metadata = viewModel.getMetadata(member).first { it != null }
+                val profile = metadata?.asRecord()
+                val name = profile?.displayName ?: profile?.name ?: member.short()
+
+                snackbarHostState.showSnackbar("Connected to messaging relays for $name")
+            }
+        }
+
+        // Stop loading spinner
+        loading = false
+
+        // Handle new messages
+        viewModel.newEvents.collect { event ->
+            if (event.roomId() == id) {
+                if (event.id() !in messages.map { it.id() }) {
+                    messages.add(0, event)
+                }
+            } else {
+                // If the event is not in the current room, it's a new message from another user
+                newOtherMessages++
+            }
+        }
+    }
+
+    LaunchedEffect(messages.size) {
+        if (messages.isNotEmpty()) {
+            listState.animateScrollToItem(0)
+        }
+    }
+
+    Scaffold(
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = {
+                    Row(
+                        verticalAlignment = Alignment.CenterVertically,
+                        modifier = Modifier.clickable {
+                            room.members.firstOrNull()?.let { pubkey ->
+                                navigator.navigate(Screen.Profile(pubkey.toBech32()))
+                            }
+                        }
+                    ) {
+                        if (loading) {
+                            LoadingIndicator(
+                                modifier = Modifier.size(32.dp),
+                            )
+                        } else {
+                            Avatar(
+                                picture = picture,
+                                description = displayName,
+                                size = 32.dp,
+                            )
+                        }
+                        Spacer(modifier = Modifier.size(8.dp))
+                        Text(
+                            text = displayName,
+                            style = MaterialTheme.typography.titleMediumEmphasized,
+                        )
+                    }
+                },
+                navigationIcon = {
+                    BadgedBox(
+                        badge = {
+                            if (newOtherMessages > 0) {
+                                Badge {
+                                    Text(newOtherMessages.toString())
+                                }
+                            }
+                        }
+                    ) {
+                        IconButton(onClick = { navigator.goBack() }) {
+                            Icon(
+                                painter = painterResource(Res.drawable.ic_arrow_back),
+                                contentDescription = "Back"
+                            )
+                        }
+                    }
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                )
+            )
+        },
+        content = { innerPadding ->
+            Surface(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(top = innerPadding.calculateTopPadding()),
+                color = MaterialTheme.colorScheme.surface,
+                shape = RoundedCornerShape(topStart = 24.dp, topEnd = 24.dp),
+            ) {
+                Column(
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .padding(bottom = innerPadding.calculateBottomPadding())
+                ) {
+                    if (messages.isNotEmpty()) {
+                        LazyColumn(
+                            modifier = Modifier
+                                .weight(1f)
+                                .fillMaxWidth(),
+                            contentPadding = PaddingValues(16.dp),
+                            reverseLayout = true,
+                            state = listState,
+                        ) {
+                            groupedMessages.forEach { (dateHeader, messagesInGroup) ->
+                                items(
+                                    messagesInGroup,
+                                    key = { it.id()?.toBech32()!! }) { event ->
+                                    ChatMessage(event)
+                                }
+                                item {
+                                    DateSeparator(dateHeader)
+                                }
+                            }
+                        }
+                    } else {
+                        Box(
+                            modifier = Modifier
+                                .weight(1f)
+                                .fillMaxWidth(),
+                            contentAlignment = Alignment.Center
+                        ) {
+                            Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                                Text(
+                                    text = "No messages yet",
+                                    style = MaterialTheme.typography.titleLargeEmphasized,
+                                    color = MaterialTheme.colorScheme.onSurface
+                                )
+                                Text(
+                                    text = "Your conversations will appear here.",
+                                    style = MaterialTheme.typography.bodyMedium,
+                                    color = MaterialTheme.colorScheme.outline
+                                )
+                            }
+                        }
+                    }
+                    ChatInput(
+                        value = text,
+                        onValueChange = { text = it },
+                        onSend = {
+                            viewModel.sendMessage(id, text)
+                            text = ""
+                        }
+                    )
+                }
+            }
+        }
+    )
+}
+
+@Composable
+fun DateSeparator(date: String) {
+    Box(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(vertical = 16.dp),
+        contentAlignment = Alignment.Center
+    ) {
+        Text(
+            text = date,
+            style = MaterialTheme.typography.labelMedium,
+            color = MaterialTheme.colorScheme.outline
+        )
+    }
+}
+
+@Composable
+fun ChatMessage(
+    rumor: UnsignedEvent
+) {
+    val viewModel = LocalNostrViewModel.current
+    val currentUser = viewModel.currentUser()
+    val isMine = rumor.author() == currentUser
+
+    val bubbleShape = if (isMine) {
+        RoundedCornerShape(topStart = 20.dp, topEnd = 20.dp, bottomStart = 20.dp, bottomEnd = 4.dp)
+    } else {
+        RoundedCornerShape(topStart = 20.dp, topEnd = 20.dp, bottomStart = 4.dp, bottomEnd = 20.dp)
+    }
+
+    val containerColor =
+        if (isMine) MaterialTheme.colorScheme.primaryContainer else MaterialTheme.colorScheme.tertiaryContainer
+
+    val contentColor =
+        if (isMine) MaterialTheme.colorScheme.onPrimaryContainer else MaterialTheme.colorScheme.onTertiaryContainer
+
+    Box(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(vertical = 4.dp),
+        contentAlignment = if (isMine) Alignment.CenterEnd else Alignment.CenterStart
+    ) {
+        Column(
+            horizontalAlignment = if (isMine) Alignment.End else Alignment.Start
+        ) {
+            Surface(
+                color = containerColor,
+                contentColor = contentColor,
+                shape = bubbleShape,
+                modifier = Modifier
+                    .widthIn(max = 280.dp)
+                    .clickable(
+                        onClick = {
+                            val id = rumor.id()
+                            if (id != null) {
+                                val sent = viewModel.isMessageSent(id)
+                                println("Sent: $sent")
+                            }
+                        }
+                    )
+            ) {
+                Text(
+                    text = rumor.content(),
+                    modifier = Modifier.padding(horizontal = 16.dp, vertical = 8.dp),
+                    style = MaterialTheme.typography.bodyMedium
+                )
+            }
+        }
+    }
+}
+
+@Composable
+fun ChatInput(
+    value: String,
+    onValueChange: (String) -> Unit,
+    onSend: () -> Unit
+) {
+
+    Surface(modifier = Modifier.fillMaxWidth()) {
+        Row(
+            modifier = Modifier
+                .padding(horizontal = 16.dp, vertical = 8.dp)
+                .height(IntrinsicSize.Min),
+            verticalAlignment = Alignment.Bottom
+        ) {
+            TextField(
+                value = value,
+                onValueChange = onValueChange,
+                placeholder = { Text("Message") },
+                shape = RoundedCornerShape(28.dp),
+                colors = TextFieldDefaults.colors(
+                    focusedIndicatorColor = Color.Transparent,
+                    unfocusedIndicatorColor = Color.Transparent
+                ),
+                modifier = Modifier.weight(1f)
+            )
+            Spacer(modifier = Modifier.size(8.dp))
+            FilledTonalIconButton(
+                onClick = onSend,
+                modifier = Modifier
+                    .fillMaxHeight()
+                    .aspectRatio(1f),
+                colors = IconButtonDefaults.filledTonalIconButtonColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceVariant,
+                    contentColor = MaterialTheme.colorScheme.onSurfaceVariant
+                )
+            ) {
+                Icon(
+                    painter = painterResource(Res.drawable.ic_send),
+                    contentDescription = "Send"
+                )
+            }
+        }
+    }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/HomeScreen.kt

@@ -0,0 +1,540 @@
+package su.reya.coop.screens
+
+import android.Manifest
+import android.content.ClipData
+import android.content.Intent
+import android.os.Build
+import android.provider.Settings
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.imePadding
+import androidx.compose.foundation.layout.navigationBarsPadding
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.ExtendedFloatingActionButton
+import androidx.compose.material3.FilledIconButton
+import androidx.compose.material3.FilledTonalButton
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.ListItem
+import androidx.compose.material3.ListItemDefaults
+import androidx.compose.material3.LoadingIndicator
+import androidx.compose.material3.MaterialShapes
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.ModalBottomSheet
+import androidx.compose.material3.OutlinedButton
+import androidx.compose.material3.PlainTooltip
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SegmentedListItem
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.material3.TooltipAnchorPosition
+import androidx.compose.material3.TooltipBox
+import androidx.compose.material3.TooltipDefaults
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.material3.pulltorefresh.PullToRefreshBox
+import androidx.compose.material3.pulltorefresh.PullToRefreshDefaults
+import androidx.compose.material3.pulltorefresh.rememberPullToRefreshState
+import androidx.compose.material3.rememberModalBottomSheetState
+import androidx.compose.material3.rememberTooltipState
+import androidx.compose.material3.toShape
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.platform.ClipEntry
+import androidx.compose.ui.platform.LocalClipboard
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.core.app.NotificationManagerCompat
+import androidx.lifecycle.compose.LifecycleResumeEffect
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_new_chat
+import coop.composeapp.generated.resources.ic_qr
+import coop.composeapp.generated.resources.ic_scanner
+import kotlinx.coroutines.launch
+import org.jetbrains.compose.resources.painterResource
+import rust.nostr.sdk.PublicKey
+import su.reya.coop.LocalNavigator
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalScanResult
+import su.reya.coop.LocalSnackbarHostState
+import su.reya.coop.Room
+import su.reya.coop.Screen
+import su.reya.coop.ago
+import su.reya.coop.shared.Avatar
+import su.reya.coop.shared.displayNameFlow
+import su.reya.coop.shared.pictureFlow
+import su.reya.coop.short
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
+@Composable
+fun HomeScreen() {
+    val context = LocalContext.current
+    val navigator = LocalNavigator.current
+    val qrScanResult = LocalScanResult.current
+    val snackbarHostState = LocalSnackbarHostState.current
+    val clipboardManager = LocalClipboard.current
+    val viewModel = LocalNostrViewModel.current
+
+    val currentUser = viewModel.currentUser() ?: return
+    val currentUserProfile = viewModel.getMetadata(currentUser) ?: return
+
+    val userProfile by currentUserProfile.collectAsState(initial = null)
+    val chatRooms by viewModel.chatRooms.collectAsState(initial = emptyList())
+    val isPartialProcessedGiftWrap by viewModel.isPartialProcessedGiftWrap.collectAsState(initial = false)
+    val isBannerDismissed by viewModel.isNotificationBannerDismissed.collectAsState()
+
+    val scope = rememberCoroutineScope()
+    val sheetState = rememberModalBottomSheetState()
+    val listState = rememberLazyListState()
+    val pullToRefreshState = rememberPullToRefreshState()
+
+    val expandedFab by remember { derivedStateOf { listState.firstVisibleItemIndex == 0 } }
+    var showBottomSheet by remember { mutableStateOf(false) }
+    var isRefreshing by remember { mutableStateOf(false) }
+
+    var isNotificationEnabled by remember {
+        mutableStateOf(NotificationManagerCompat.from(context).areNotificationsEnabled())
+    }
+
+    val permissionLauncher = rememberLauncherForActivityResult(
+        ActivityResultContracts.RequestPermission()
+    ) { _ ->
+        // State will be updated by LifecycleResumeEffect
+    }
+
+    LifecycleResumeEffect(context) {
+        isNotificationEnabled = NotificationManagerCompat.from(context).areNotificationsEnabled()
+        onPauseOrDispose { }
+    }
+
+    LaunchedEffect(Unit) {
+        viewModel.getChatRooms()
+    }
+
+    LaunchedEffect(qrScanResult.content) {
+        qrScanResult.content?.let { result ->
+            runCatching { PublicKey.parse(result) }
+                .onSuccess { pubkey ->
+                    try {
+                        val roomId = viewModel.createChatRoom(listOf(pubkey))
+                        navigator.navigate(Screen.Chat(roomId))
+                    } catch (e: Exception) {
+                        e.message?.let { snackbarHostState.showSnackbar(it) }
+                    }
+                }
+                .onFailure { e -> println("Failed to parse QR: ${e.message}") }
+            // Clear the nav state
+            qrScanResult.clear()
+        }
+    }
+
+    Scaffold(
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        topBar = {
+            TopAppBar(
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                ),
+                title = {
+                    Text(
+                        text = "Coop",
+                        style = MaterialTheme.typography.titleMediumEmphasized
+                    )
+                },
+                actions = {
+                    // QR Scanner
+                    IconButton(onClick = { navigator.navigate(Screen.Scan) }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_scanner),
+                            contentDescription = "Scanner"
+                        )
+                    }
+                    // User
+                    IconButton(onClick = { showBottomSheet = true }) {
+                        Avatar(
+                            picture = userProfile?.asRecord()?.picture,
+                            description = userProfile?.asRecord()?.displayName,
+                            size = 32.dp,
+                        )
+                    }
+                }
+            )
+        },
+        floatingActionButton = {
+            TooltipBox(
+                positionProvider = TooltipDefaults.rememberTooltipPositionProvider(
+                    TooltipAnchorPosition.Above,
+                    spacingBetweenTooltipAndAnchor = 8.dp,
+                ),
+                tooltip = {
+                    if (!expandedFab) {
+                        PlainTooltip { Text("New Chat") }
+                    }
+                },
+                state = rememberTooltipState(),
+            ) {
+                ExtendedFloatingActionButton(
+                    onClick = { navigator.navigate(Screen.NewChat) },
+                    expanded = expandedFab,
+                    icon = {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_new_chat),
+                            contentDescription = "New Chat"
+                        )
+                    },
+                    text = { Text("New Chat") },
+                )
+            }
+        },
+        content = { innerPadding ->
+            Column(
+                modifier = Modifier.padding(top = innerPadding.calculateTopPadding()),
+                verticalArrangement = Arrangement.spacedBy(16.dp),
+            ) {
+                if (!isNotificationEnabled && !isBannerDismissed) {
+                    Surface(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .padding(horizontal = 16.dp),
+                        shape = RoundedCornerShape(24.dp),
+                        color = MaterialTheme.colorScheme.secondaryContainer,
+                    ) {
+                        Column(
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .padding(16.dp),
+                            verticalArrangement = Arrangement.spacedBy(16.dp),
+                        ) {
+                            Column(
+                                modifier = Modifier.fillMaxWidth(),
+                            ) {
+                                Text(
+                                    text = "Get message notifications",
+                                    style = MaterialTheme.typography.titleMediumEmphasized,
+                                    color = MaterialTheme.colorScheme.onSecondaryFixed,
+                                )
+                                Text(
+                                    text = "Make sure you know when you have new messages.",
+                                    style = MaterialTheme.typography.bodyMedium,
+                                    color = MaterialTheme.colorScheme.onSecondaryContainer,
+                                )
+                            }
+                            Row(
+                                horizontalArrangement = Arrangement.spacedBy(8.dp),
+                            ) {
+                                TextButton(
+                                    onClick = { viewModel.dismissNotificationBanner() },
+                                    modifier = Modifier.weight(1f),
+                                ) {
+                                    Text(text = "Maybe later")
+                                }
+                                Button(
+                                    onClick = {
+                                        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+                                            permissionLauncher.launch(Manifest.permission.POST_NOTIFICATIONS)
+                                        } else {
+                                            // For older versions, navigate the user directly to App Notification Settings
+                                            val intent =
+                                                Intent(Settings.ACTION_APP_NOTIFICATION_SETTINGS).apply {
+                                                    putExtra(
+                                                        Settings.EXTRA_APP_PACKAGE,
+                                                        context.packageName
+                                                    )
+                                                }
+                                            context.startActivity(intent)
+                                        }
+                                    },
+                                    modifier = Modifier.weight(1f),
+                                ) {
+                                    Text(text = "Turn on")
+                                }
+                            }
+                        }
+                    }
+                }
+                Surface(
+                    modifier = Modifier.fillMaxSize(),
+                    color = MaterialTheme.colorScheme.surface,
+                    shape = RoundedCornerShape(topStart = 24.dp, topEnd = 24.dp),
+                ) {
+                    PullToRefreshBox(
+                        modifier = Modifier.fillMaxSize(),
+                        isRefreshing = isRefreshing,
+                        state = pullToRefreshState,
+                        onRefresh = {
+                            scope.launch {
+                                isRefreshing = true
+                                viewModel.refreshChatRooms()
+                                isRefreshing = false
+                            }
+                        },
+                        indicator = {
+                            PullToRefreshDefaults.LoadingIndicator(
+                                state = pullToRefreshState,
+                                isRefreshing = isRefreshing,
+                                modifier = Modifier.align(Alignment.TopCenter),
+                            )
+                        }
+                    ) {
+                        if (!isPartialProcessedGiftWrap) {
+                            Box(
+                                modifier = Modifier.fillMaxSize(),
+                                contentAlignment = Alignment.Center
+                            ) {
+                                LoadingIndicator()
+                            }
+                        } else if (chatRooms.isEmpty()) {
+                            Box(
+                                modifier = Modifier.fillMaxSize(),
+                                contentAlignment = Alignment.Center
+                            ) {
+                                Column(
+                                    horizontalAlignment = Alignment.CenterHorizontally,
+                                    verticalArrangement = Arrangement.spacedBy(4.dp),
+                                ) {
+                                    Text(
+                                        text = "No chats yet",
+                                        style = MaterialTheme.typography.titleLargeEmphasized.copy(
+                                            fontWeight = FontWeight.SemiBold
+                                        ),
+                                        color = MaterialTheme.colorScheme.onSurface
+                                    )
+                                    Text(
+                                        text = "Your conversations will appear here.",
+                                        style = MaterialTheme.typography.bodyMedium,
+                                        color = MaterialTheme.colorScheme.outline
+                                    )
+                                }
+                            }
+                        } else {
+                            LazyColumn(
+                                state = listState,
+                                modifier = Modifier.fillMaxSize()
+                            ) {
+                                items(chatRooms.toList(), key = { it.id }) { room ->
+                                    ChatRoom(
+                                        room = room,
+                                        onClick = { navigator.navigate(Screen.Chat(room.id)) }
+                                    )
+                                }
+                            }
+                        }
+                    }
+
+                    if (showBottomSheet) {
+                        ModalBottomSheet(
+                            onDismissRequest = { showBottomSheet = false },
+                            sheetState = sheetState,
+                            modifier = Modifier
+                                .imePadding()
+                                .navigationBarsPadding(),
+                        ) {
+                            val pubkey = viewModel.currentUser()
+                            val shortPubkey = pubkey?.short() ?: "Not available"
+
+                            val userName =
+                                userProfile?.asRecord()?.displayName
+                                    ?: userProfile?.asRecord()?.name
+                                    ?: "No name"
+
+                            val dismissAndRun: (suspend () -> Unit) -> Unit = { action ->
+                                scope.launch {
+                                    sheetState.hide()
+                                    showBottomSheet = false
+                                    action()
+                                }
+                            }
+
+                            Column(
+                                modifier = Modifier
+                                    .padding(16.dp)
+                                    .fillMaxWidth(),
+                            ) {
+                                Column(
+                                    modifier = Modifier.fillMaxWidth(),
+                                    horizontalAlignment = Alignment.CenterHorizontally,
+                                ) {
+                                    Box(
+                                        modifier = Modifier
+                                            .size(84.dp)
+                                            .clip(MaterialShapes.Cookie9Sided.toShape()),
+                                        contentAlignment = Alignment.Center
+                                    ) {
+                                        Avatar(
+                                            picture = userProfile?.asRecord()?.picture,
+                                            description = userProfile?.asRecord()?.displayName,
+                                            shape = MaterialShapes.Cookie9Sided.toShape(),
+                                            modifier = Modifier.fillMaxSize()
+                                        )
+                                    }
+                                    Spacer(modifier = Modifier.size(8.dp))
+                                    Box(
+                                        contentAlignment = Alignment.Center
+                                    ) {
+                                        Text(
+                                            text = userName,
+                                            style = MaterialTheme.typography.titleLargeEmphasized,
+                                        )
+                                    }
+                                    Spacer(modifier = Modifier.size(8.dp))
+                                    Row(
+                                        verticalAlignment = Alignment.CenterVertically,
+                                    ) {
+                                        OutlinedButton(
+                                            onClick = {
+                                                scope.launch {
+                                                    pubkey?.let {
+                                                        val bech32 = it.toBech32()
+                                                        val data =
+                                                            ClipData.newPlainText(bech32, bech32)
+                                                        clipboardManager.setClipEntry(ClipEntry(data))
+                                                    }
+                                                }
+                                            },
+                                        ) {
+                                            Text(text = shortPubkey)
+                                        }
+                                        FilledIconButton(
+                                            onClick = {
+                                                dismissAndRun { navigator.navigate(Screen.MyQr) }
+                                            },
+                                            shape = MaterialShapes.Square.toShape()
+                                        ) {
+                                            Icon(
+                                                painter = painterResource(Res.drawable.ic_qr),
+                                                contentDescription = "My QR"
+                                            )
+                                        }
+                                    }
+                                }
+                                Spacer(modifier = Modifier.size(16.dp))
+                                BottomMenuList(onDismiss = dismissAndRun)
+                            }
+                        }
+                    }
+                }
+            }
+        },
+    )
+}
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ChatRoom(room: Room, onClick: () -> Unit) {
+    val viewModel = LocalNostrViewModel.current
+    val displayName by remember(room) { room.displayNameFlow(viewModel) }.collectAsState("Loading...")
+    val picture by remember(room) { room.pictureFlow(viewModel) }.collectAsState(null)
+
+    ListItem(
+        modifier = Modifier.clickable(onClick = onClick),
+        leadingContent = {
+            Avatar(picture = picture, description = displayName)
+        },
+        headlineContent = {
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                Text(
+                    text = displayName,
+                    style = MaterialTheme.typography.titleMediumEmphasized,
+                    modifier = Modifier.weight(1f)
+                )
+                Text(
+                    text = room.createdAt.ago(),
+                    style = MaterialTheme.typography.bodySmall,
+                    color = MaterialTheme.colorScheme.outline
+                )
+            }
+        },
+        supportingContent = {
+            if (!room.lastMessage.isNullOrBlank()) {
+                Text(
+                    text = room.lastMessage!!,
+                    style = MaterialTheme.typography.bodyMedium
+                )
+            }
+        },
+        colors = ListItemDefaults.colors(
+            containerColor = MaterialTheme.colorScheme.surface
+        )
+    )
+}
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun BottomMenuList(
+    onDismiss: (suspend () -> Unit) -> Unit
+) {
+    val navigator = LocalNavigator.current
+    val viewModel = LocalNostrViewModel.current
+
+    val defaultMenuList = listOf(
+        "Relay Management" to { navigator.navigate(Screen.Relay) },
+        "Spams & Blocks" to { },
+        "Contacts" to { },
+        "Settings" to { }
+    )
+
+    Column(
+        modifier = Modifier.fillMaxWidth(),
+        horizontalAlignment = Alignment.CenterHorizontally,
+    ) {
+        Column(
+            modifier = Modifier.fillMaxWidth(),
+            verticalArrangement = Arrangement.spacedBy(ListItemDefaults.SegmentedGap),
+        ) {
+            defaultMenuList.forEachIndexed { index, (title, action) ->
+                SegmentedListItem(
+                    onClick = { onDismiss { action() } },
+                    shapes = ListItemDefaults.segmentedShapes(
+                        index = index,
+                        count = defaultMenuList.size
+                    ),
+                    content = { Text(text = title) },
+                )
+            }
+        }
+        Spacer(modifier = Modifier.size(16.dp))
+        FilledTonalButton(
+            onClick = { viewModel.logout() },
+            colors = ButtonDefaults.filledTonalButtonColors(
+                containerColor = MaterialTheme.colorScheme.error,
+                contentColor = MaterialTheme.colorScheme.onError
+            )
+        ) {
+            Text(text = "Logout")
+        }
+    }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/ImportScreen.kt

@@ -0,0 +1,277 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.imePadding
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.BasicTextField
+import androidx.compose.foundation.text.KeyboardActions
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.LoadingIndicator
+import androidx.compose.material3.MaterialShapes
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.material3.toShape
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.platform.LocalFocusManager
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.input.PasswordVisualTransformation
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import coop.composeapp.generated.resources.ic_scanner
+import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.launch
+import org.jetbrains.compose.resources.painterResource
+import rust.nostr.sdk.Keys
+import rust.nostr.sdk.NostrConnectUri
+import rust.nostr.sdk.PublicKey
+import su.reya.coop.LocalNavigator
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalScanResult
+import su.reya.coop.LocalSnackbarHostState
+import su.reya.coop.Screen
+import su.reya.coop.shared.Avatar
+import su.reya.coop.shared.getExpressiveFontFamily
+import su.reya.coop.short
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ImportScreen() {
+    val snackbarHostState = LocalSnackbarHostState.current
+    val navigator = LocalNavigator.current
+    val qrScanResult = LocalScanResult.current
+    val focusManager = LocalFocusManager.current
+    val viewModel = LocalNostrViewModel.current
+
+    val scope = rememberCoroutineScope()
+
+    val isLoggedIn by viewModel.isLoggedIn.collectAsStateWithLifecycle(false)
+    var secret by remember { mutableStateOf("") }
+    var pubkey by remember { mutableStateOf<PublicKey?>(null) }
+
+    // Get metadata when pubkey changes
+    val metadata by remember(pubkey) {
+        pubkey?.let(viewModel::getMetadata) ?: flowOf(null)
+    }.collectAsStateWithLifecycle(null)
+
+    val profile = metadata?.asRecord()
+    val displayName = profile?.displayName ?: profile?.name ?: pubkey?.short() ?: "Unknown"
+    val picture = profile?.picture
+    
+    LaunchedEffect(qrScanResult.content) {
+        qrScanResult.content?.let { result ->
+            runCatching {
+                if (result.startsWith("nsec")) {
+                    Keys.parse(result)
+                } else if (result.startsWith("bunker://")) {
+                    NostrConnectUri.parse(result)
+                } else {
+                    throw IllegalArgumentException("Invalid secret: $result")
+                }
+            }
+                .onSuccess { it -> secret = result }
+                .onFailure { e -> println("Failed to parse QR: ${e.message}") }
+
+            // Clear the nav state
+            qrScanResult.clear()
+        }
+    }
+
+    Scaffold(
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = {
+                    Text(
+                        text = "Import",
+                        style = MaterialTheme.typography.titleMediumEmphasized
+                    )
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                ),
+                navigationIcon = {
+                    IconButton(onClick = { navigator.goBack() }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                },
+                actions = {
+                    IconButton(onClick = { navigator.navigate(Screen.Scan) }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_scanner),
+                            contentDescription = "Scanner"
+                        )
+                    }
+                }
+            )
+        },
+        content = { innerPadding ->
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(top = innerPadding.calculateTopPadding())
+                    .imePadding(),
+            ) {
+                Column(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .weight(1f),
+                    verticalArrangement = Arrangement.Center,
+                    horizontalAlignment = Alignment.CenterHorizontally
+                ) {
+                    Box(
+                        modifier = Modifier
+                            .size(120.dp)
+                            .clip(MaterialShapes.Cookie9Sided.toShape()),
+                        contentAlignment = Alignment.Center
+                    ) {
+                        Avatar(
+                            picture = picture,
+                            description = "Profile picture",
+                            modifier = Modifier.fillMaxSize(),
+                            shape = MaterialShapes.Cookie9Sided.toShape(),
+                        )
+                    }
+                    Spacer(modifier = Modifier.size(8.dp))
+                    Text(
+                        text = displayName,
+                        textAlign = TextAlign.Center,
+                        style = MaterialTheme.typography.titleLargeEmphasized.copy(
+                            fontFamily = getExpressiveFontFamily()
+                        ),
+                    )
+                }
+                Surface(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .weight(1f, fill = false),
+                    color = MaterialTheme.colorScheme.surface,
+                    shape = RoundedCornerShape(topStart = 24.dp, topEnd = 24.dp),
+                ) {
+                    Column(
+                        modifier = Modifier
+                            .fillMaxSize()
+                            .padding(24.dp)
+                    ) {
+                        Column(
+                            modifier = Modifier
+                                .weight(1f)
+                                .verticalScroll(rememberScrollState()),
+                            verticalArrangement = Arrangement.spacedBy(16.dp)
+                        ) {
+                            Text(
+                                text = "Enter your Secret Key or Bunker URI:",
+                                style = MaterialTheme.typography.titleMediumEmphasized.copy(
+                                    fontWeight = FontWeight.SemiBold,
+                                ),
+                            )
+                            BasicTextField(
+                                value = secret,
+                                onValueChange = { secret = it },
+                                enabled = !isLoggedIn,
+                                modifier = Modifier.fillMaxWidth(),
+                                maxLines = 4,
+                                keyboardOptions = KeyboardOptions(
+                                    imeAction = ImeAction.Done,
+                                ),
+                                keyboardActions = KeyboardActions(
+                                    onDone = {
+                                        focusManager.clearFocus()
+                                    }
+                                ),
+                                visualTransformation = PasswordVisualTransformation('*'),
+                                textStyle = MaterialTheme.typography.bodyMediumEmphasized.copy(
+                                    color = MaterialTheme.colorScheme.tertiaryFixedDim,
+                                    fontWeight = FontWeight.SemiBold,
+                                ),
+                                cursorBrush = SolidColor(MaterialTheme.colorScheme.tertiaryContainer),
+                                decorationBox = { innerTextField ->
+                                    Box(contentAlignment = Alignment.CenterStart) {
+                                        if (secret.isEmpty()) {
+                                            Text(
+                                                "bunker://",
+                                                style = MaterialTheme.typography.bodyMediumEmphasized.copy(
+                                                    fontWeight = FontWeight.SemiBold,
+                                                ),
+                                                color = MaterialTheme.colorScheme.onSurfaceVariant.copy(
+                                                    alpha = 0.5f
+                                                )
+                                            )
+                                        }
+                                        innerTextField()
+                                    }
+                                }
+                            )
+                        }
+                        Spacer(modifier = Modifier.size(16.dp))
+                        Button(
+                            onClick = {
+                                scope.launch {
+                                    if (pubkey == null) {
+                                        viewModel.verifyIdentity(secret).let { pubkey = it }
+                                    } else {
+                                        // Import the identity
+                                        viewModel.importIdentity(secret)
+                                        // Navigate to the home screen
+                                        navigator.navigate(Screen.Home)
+                                    }
+                                }
+
+                            },
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .height(ButtonDefaults.MediumContainerHeight),
+                            enabled = secret.isNotBlank() && !isLoggedIn,
+                        ) {
+                            if (isLoggedIn) {
+                                LoadingIndicator()
+                            } else {
+                                Text(
+                                    text = if (pubkey == null) "Verify" else "Click again to Continue",
+                                    style = MaterialTheme.typography.titleMediumEmphasized,
+                                )
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    )
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/MyQrScreen.kt

@@ -0,0 +1,68 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import io.github.alexzhirkevich.qrose.rememberQrCodePainter
+import org.jetbrains.compose.resources.painterResource
+import su.reya.coop.LocalNavigator
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalSnackbarHostState
+
+@Composable
+fun MyQrScreen() {
+    val navigator = LocalNavigator.current
+    val snackbarHostState = LocalSnackbarHostState.current
+    val viewModel = LocalNostrViewModel.current
+    val currentUser = viewModel.currentUser() ?: return
+
+    Scaffold(
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = {
+                    Text(
+                        text = "My QR",
+                        style = MaterialTheme.typography.titleMediumEmphasized
+                    )
+                },
+                navigationIcon = {
+                    IconButton(onClick = { navigator.goBack() }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                }
+            )
+        },
+        content = { innerPadding ->
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(innerPadding),
+                verticalArrangement = Arrangement.Center,
+                horizontalAlignment = Alignment.CenterHorizontally,
+            ) {
+                Image(
+                    painter = rememberQrCodePainter(currentUser.toBech32()),
+                    contentDescription = "My QR"
+                )
+            }
+        }
+    )
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/NewChatScreen.kt

@@ -0,0 +1,406 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.BasicTextField
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.ExtendedFloatingActionButton
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.InputChip
+import androidx.compose.material3.ListItemDefaults
+import androidx.compose.material3.LocalMinimumInteractiveComponentSize
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.PlainTooltip
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SegmentedListItem
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TooltipAnchorPosition
+import androidx.compose.material3.TooltipBox
+import androidx.compose.material3.TooltipDefaults
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.material3.rememberTooltipState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.runtime.snapshots.SnapshotStateList
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import coop.composeapp.generated.resources.ic_arrow_next
+import coop.composeapp.generated.resources.ic_close_small
+import coop.composeapp.generated.resources.ic_scanner
+import kotlinx.coroutines.delay
+import org.jetbrains.compose.resources.painterResource
+import rust.nostr.sdk.PublicKey
+import su.reya.coop.LocalNavigator
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalScanResult
+import su.reya.coop.LocalSnackbarHostState
+import su.reya.coop.Screen
+import su.reya.coop.shared.Avatar
+import su.reya.coop.short
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun NewChatScreen() {
+    val snackbarHostState = LocalSnackbarHostState.current
+    val navigator = LocalNavigator.current
+    val qrScanResult = LocalScanResult.current
+    val viewModel = LocalNostrViewModel.current
+
+    val contactList by viewModel.contactList.collectAsState(initial = emptySet())
+    val createGroup = remember { mutableStateOf(false) }
+    val searchResults = remember { mutableStateListOf<PublicKey>() }
+    val selectedReceivers = remember { mutableStateListOf<PublicKey>() }
+    var query by remember { mutableStateOf("") }
+
+    LaunchedEffect(query) {
+        if (query.length >= 3) {
+            delay(500) // 500ms debounce
+
+            if (query.startsWith("npub1")) {
+                val pubkey = try {
+                    PublicKey.parse(query)
+                } catch (e: Exception) {
+                    println("Failed to parse npub: ${e.message}")
+                    null
+                }
+                if (pubkey != null) {
+                    selectedReceivers.add(pubkey)
+                }
+            } else if (query.contains("@")) {
+                val pubkey = viewModel.searchByAddress(query)
+                if (pubkey != null) {
+                    selectedReceivers.add(pubkey)
+                }
+            } else {
+                val results = viewModel.searchByNostr(query)
+                searchResults.clear()
+                searchResults.addAll(results)
+            }
+
+            query = ""
+        }
+    }
+
+    LaunchedEffect(qrScanResult.content) {
+        qrScanResult.content?.let { result ->
+            // Verify the content
+            runCatching { PublicKey.parse(result) }
+                .onSuccess { pubkey ->
+                    selectedReceivers.add(pubkey)
+                }
+                .onFailure { e ->
+                    println("Failed to parse QR: ${e.message}")
+                }
+
+            // Clear the nav state
+            qrScanResult.clear()
+        }
+    }
+
+    Scaffold(
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = {
+                    Text(
+                        text = if (createGroup.value) "New group chat" else "New chat",
+                        style = MaterialTheme.typography.titleMediumEmphasized
+                    )
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                ),
+                navigationIcon = {
+                    IconButton(onClick = { navigator.goBack() }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                },
+                actions = {
+                    IconButton(onClick = { navigator.navigate(Screen.Scan) }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_scanner),
+                            contentDescription = "Scanner"
+                        )
+                    }
+                }
+            )
+        },
+        floatingActionButton = {
+            if (selectedReceivers.isNotEmpty()) {
+                TooltipBox(
+                    positionProvider = TooltipDefaults.rememberTooltipPositionProvider(
+                        TooltipAnchorPosition.Above,
+                        spacingBetweenTooltipAndAnchor = 8.dp,
+                    ),
+                    tooltip = {
+                        PlainTooltip { Text("Next") }
+                    },
+                    state = rememberTooltipState(),
+                ) {
+                    ExtendedFloatingActionButton(
+                        onClick = {
+                            val roomId = viewModel.createChatRoom(selectedReceivers.toList())
+                            navigator.navigate(Screen.Chat(roomId))
+                        },
+                        expanded = false,
+                        icon = {
+                            Icon(
+                                painter = painterResource(Res.drawable.ic_arrow_next),
+                                contentDescription = "Next"
+                            )
+                        },
+                        text = { Text("Next") },
+                        containerColor = MaterialTheme.colorScheme.tertiary,
+                        contentColor = MaterialTheme.colorScheme.onTertiary,
+                    )
+                }
+            }
+        },
+        content = { innerPadding ->
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(innerPadding)
+            ) {
+                Surface(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(16.dp),
+                    shape = RoundedCornerShape(24.dp),
+                    color = MaterialTheme.colorScheme.surface,
+                ) {
+                    Row(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .padding(16.dp),
+                        verticalAlignment = Alignment.Top,
+                    ) {
+                        Text(
+                            text = "To:",
+                            style = MaterialTheme.typography.bodyMedium.copy(
+                                fontWeight = FontWeight.SemiBold,
+                            ),
+                            color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        )
+                        Spacer(modifier = Modifier.size(16.dp))
+                        Column(
+                            modifier = Modifier.weight(1f),
+                            verticalArrangement = Arrangement.spacedBy(8.dp),
+                        ) {
+                            selectedReceivers.forEach { receiver ->
+                                ReceiverChip(
+                                    pubkey = receiver,
+                                    onRemove = { selectedReceivers.remove(receiver) }
+                                )
+                            }
+                            BasicTextField(
+                                value = query,
+                                onValueChange = { query = it },
+                                modifier = Modifier.fillMaxWidth(),
+                                textStyle = MaterialTheme.typography.bodyMedium.copy(
+                                    color = MaterialTheme.colorScheme.onSurface
+                                ),
+                                cursorBrush = SolidColor(MaterialTheme.colorScheme.primary),
+                                decorationBox = { innerTextField ->
+                                    Box(contentAlignment = Alignment.CenterStart) {
+                                        if (query.isEmpty()) {
+                                            Text(
+                                                "Type a npub or address",
+                                                style = MaterialTheme.typography.bodyMedium,
+                                                color = MaterialTheme.colorScheme.onSurfaceVariant.copy(
+                                                    alpha = 0.5f
+                                                )
+                                            )
+                                        }
+                                        innerTextField()
+                                    }
+                                }
+                            )
+                        }
+                    }
+                }
+                Spacer(modifier = Modifier.size(16.dp))
+                Column(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(horizontal = 16.dp),
+                ) {
+                    if (searchResults.isNotEmpty()) {
+                        ContactList(
+                            items = searchResults,
+                            selectedReceivers = selectedReceivers,
+                            onContactClick = { pubkey ->
+                                val roomId = viewModel.createChatRoom(listOf(pubkey))
+                                navigator.navigate(Screen.Chat(roomId))
+                            },
+                        )
+                        Spacer(modifier = Modifier.size(16.dp))
+                    } else {
+                        ContactList(
+                            title = "Contacts",
+                            items = contactList.toList(),
+                            selectedReceivers = selectedReceivers,
+                            onContactClick = { pubkey ->
+                                val roomId = viewModel.createChatRoom(listOf(pubkey))
+                                navigator.navigate(Screen.Chat(roomId))
+                            }
+                        )
+                        Spacer(modifier = Modifier.size(16.dp))
+                    }
+                }
+            }
+        }
+    )
+}
+
+@Composable
+fun ReceiverChip(
+    pubkey: PublicKey,
+    onRemove: () -> Unit
+) {
+    val viewModel = LocalNostrViewModel.current
+    val metadataFlow = remember(pubkey) { viewModel.getMetadata(pubkey) }
+    val metadata by metadataFlow.collectAsState(initial = null)
+
+    val profile = metadata?.asRecord()
+    val displayName = profile?.name ?: profile?.displayName ?: pubkey.short()
+    val picture = profile?.picture
+
+    CompositionLocalProvider(LocalMinimumInteractiveComponentSize provides 0.dp) {
+        InputChip(
+            selected = true,
+            onClick = onRemove,
+            label = {
+                Text(
+                    text = displayName,
+                    style = MaterialTheme.typography.bodyMedium.copy(
+                        fontWeight = FontWeight.SemiBold
+                    )
+                )
+            },
+            avatar = {
+                Avatar(
+                    picture = picture,
+                    description = displayName,
+                    size = 24.dp
+                )
+            },
+            trailingIcon = {
+                Icon(
+                    painter = painterResource(Res.drawable.ic_close_small),
+                    contentDescription = "Close"
+                )
+            },
+            shape = RoundedCornerShape(24.dp),
+        )
+    }
+}
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ContactList(
+    title: String? = null,
+    items: List<PublicKey>,
+    selectedReceivers: SnapshotStateList<PublicKey>,
+    onContactClick: (PublicKey) -> Unit
+) {
+    if (items.isEmpty()) return
+
+    Column(
+        modifier = Modifier.fillMaxWidth(),
+        verticalArrangement = Arrangement.spacedBy(ListItemDefaults.SegmentedGap),
+    ) {
+        if (title != null) {
+            Text(
+                text = title,
+                style = MaterialTheme.typography.titleMediumEmphasized,
+            )
+            Spacer(modifier = Modifier.size(8.dp))
+        }
+        items.forEachIndexed { index, item ->
+            ContactListItem(
+                pubkey = item,
+                index = index,
+                total = items.size,
+                isSelected = selectedReceivers.contains(item),
+                onClick = { onContactClick(item) },
+                onLongClick = {
+                    if (!selectedReceivers.contains(item)) {
+                        selectedReceivers.add(item)
+                    }
+                }
+            )
+        }
+    }
+}
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ContactListItem(
+    pubkey: PublicKey,
+    index: Int,
+    total: Int = 0,
+    isSelected: Boolean,
+    onClick: () -> Unit,
+    onLongClick: () -> Unit
+) {
+    val viewModel = LocalNostrViewModel.current
+    val metadataFlow = remember(pubkey) { viewModel.getMetadata(pubkey) }
+    val metadata by metadataFlow.collectAsState(initial = null)
+
+    val profile = metadata?.asRecord()
+    val displayName = profile?.name ?: profile?.displayName ?: pubkey.short()
+    val picture = profile?.picture
+
+    SegmentedListItem(
+        selected = isSelected,
+        onClick = onClick,
+        onLongClick = onLongClick,
+        shapes = ListItemDefaults.segmentedShapes(
+            index = index,
+            count = total
+        ),
+        leadingContent = {
+            Avatar(
+                picture = picture,
+                description = displayName,
+                size = 36.dp
+            )
+        },
+        supportingContent = { Text(text = pubkey.short()) },
+        content = {
+            Text(
+                text = displayName,
+                style = MaterialTheme.typography.titleMediumEmphasized,
+            )
+        }
+    )
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/NewIdentityScreen.kt

@@ -0,0 +1,308 @@
+package su.reya.coop.screens
+
+import android.net.Uri
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.imePadding
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.BasicTextField
+import androidx.compose.foundation.text.KeyboardActions
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.LoadingIndicator
+import androidx.compose.material3.MaterialShapes
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.material3.toShape
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalFocusManager
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import coil3.compose.AsyncImage
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import coop.composeapp.generated.resources.ic_plus
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import org.jetbrains.compose.resources.painterResource
+import su.reya.coop.LocalNavigator
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalSnackbarHostState
+import su.reya.coop.Screen
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun NewIdentityScreen() {
+    val context = LocalContext.current
+    val snackbarHostState = LocalSnackbarHostState.current
+    val focusManager = LocalFocusManager.current
+    val navigator = LocalNavigator.current
+    val viewModel = LocalNostrViewModel.current
+
+    val isLoggedIn by viewModel.isLoggedIn.collectAsStateWithLifecycle(false)
+    var name by remember { mutableStateOf("") }
+    var bio by remember { mutableStateOf("") }
+    var picture by remember { mutableStateOf<Uri?>(null) }
+
+    val scope = rememberCoroutineScope()
+
+    val launcher = rememberLauncherForActivityResult(
+        contract = ActivityResultContracts.GetContent()
+    ) { uri: Uri? ->
+        picture = uri
+    }
+
+    Scaffold(
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = {
+                    Text(
+                        text = "Create a new identity",
+                        style = MaterialTheme.typography.titleMediumEmphasized
+                    )
+                },
+                navigationIcon = {
+                    IconButton(onClick = { navigator.goBack() }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                )
+            )
+        },
+        content = { innerPadding ->
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(top = innerPadding.calculateTopPadding())
+                    .imePadding(),
+            ) {
+                Box(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .weight(1f),
+                    contentAlignment = Alignment.Center
+                ) {
+                    Box(
+                        modifier = Modifier
+                            .size(120.dp)
+                            .clip(MaterialShapes.Pentagon.toShape())
+                            .clickable { launcher.launch("image/*") },
+                        contentAlignment = Alignment.Center
+                    ) {
+                        if (picture != null) {
+                            AsyncImage(
+                                model = picture,
+                                contentDescription = "Profile picture",
+                                modifier = Modifier.fillMaxSize(),
+                                contentScale = ContentScale.Crop
+                            )
+                        } else {
+                            Surface(
+                                color = MaterialTheme.colorScheme.surfaceVariant,
+                                modifier = Modifier.fillMaxSize()
+
+                            ) {
+                                Box(contentAlignment = Alignment.Center) {
+                                    Icon(
+                                        painter = painterResource(Res.drawable.ic_plus),
+                                        contentDescription = "Pick avatar",
+                                        modifier = Modifier.size(48.dp),
+                                        tint = MaterialTheme.colorScheme.onSurfaceVariant
+                                    )
+                                }
+                            }
+                        }
+                    }
+                }
+                Surface(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .weight(1f, fill = true),
+                    color = MaterialTheme.colorScheme.surface,
+                    shape = RoundedCornerShape(topStart = 24.dp, topEnd = 24.dp),
+                ) {
+                    Column(
+                        modifier = Modifier
+                            .fillMaxSize()
+                            .padding(24.dp)
+                    ) {
+                        Column(
+                            modifier = Modifier
+                                .weight(1f)
+                                .verticalScroll(rememberScrollState()),
+                            verticalArrangement = Arrangement.spacedBy(16.dp)
+                        ) {
+                            Text(
+                                text = "What others should call you?",
+                                style = MaterialTheme.typography.titleLargeEmphasized.copy(
+                                    fontWeight = FontWeight.SemiBold,
+                                ),
+                            )
+                            BasicTextField(
+                                value = name,
+                                onValueChange = { name = it },
+                                enabled = !isLoggedIn,
+                                modifier = Modifier.fillMaxWidth(),
+                                singleLine = true,
+                                keyboardOptions = KeyboardOptions(
+                                    imeAction = ImeAction.Done,
+                                ),
+                                keyboardActions = KeyboardActions(
+                                    onDone = {
+                                        focusManager.clearFocus()
+                                    }
+                                ),
+                                textStyle = MaterialTheme.typography.headlineLargeEmphasized.copy(
+                                    color = MaterialTheme.colorScheme.tertiaryFixedDim,
+                                    fontWeight = FontWeight.SemiBold,
+                                ),
+                                cursorBrush = SolidColor(MaterialTheme.colorScheme.tertiaryContainer),
+                                decorationBox = { innerTextField ->
+                                    Box(contentAlignment = Alignment.CenterStart) {
+                                        if (name.isEmpty()) {
+                                            Text(
+                                                "Alice",
+                                                style = MaterialTheme.typography.headlineLargeEmphasized.copy(
+                                                    fontWeight = FontWeight.SemiBold,
+                                                ),
+                                                color = MaterialTheme.colorScheme.onSurfaceVariant.copy(
+                                                    alpha = 0.5f
+                                                )
+                                            )
+                                        }
+                                        innerTextField()
+                                    }
+                                }
+                            )
+                            Spacer(modifier = Modifier.size(8.dp))
+                            Text(
+                                text = "Your bio (optional)",
+                                style = MaterialTheme.typography.titleLargeEmphasized.copy(
+                                    fontWeight = FontWeight.SemiBold,
+                                ),
+                            )
+                            BasicTextField(
+                                value = bio,
+                                onValueChange = { bio = it },
+                                enabled = !isLoggedIn,
+                                modifier = Modifier.fillMaxWidth(),
+                                maxLines = 3,
+                                keyboardOptions = KeyboardOptions(
+                                    imeAction = ImeAction.Done,
+                                ),
+                                keyboardActions = KeyboardActions(
+                                    onDone = {
+                                        focusManager.clearFocus()
+                                    }
+                                ),
+                                textStyle = MaterialTheme.typography.bodyLarge.copy(
+                                    color = MaterialTheme.colorScheme.primaryFixed,
+                                    fontWeight = FontWeight.SemiBold,
+                                ),
+                                cursorBrush = SolidColor(MaterialTheme.colorScheme.secondary),
+                                decorationBox = { innerTextField ->
+                                    Box(contentAlignment = Alignment.CenterStart) {
+                                        if (bio.isEmpty()) {
+                                            Text(
+                                                "I love cat",
+                                                style = MaterialTheme.typography.headlineLargeEmphasized.copy(
+                                                    fontWeight = FontWeight.SemiBold,
+                                                ),
+                                                color = MaterialTheme.colorScheme.onSurfaceVariant.copy(
+                                                    alpha = 0.5f
+                                                )
+                                            )
+                                        }
+                                        innerTextField()
+                                    }
+                                }
+                            )
+                        }
+                        Spacer(modifier = Modifier.size(16.dp))
+                        Button(
+                            onClick = {
+                                scope.launch {
+                                    try {
+                                        val imageBytes = withContext(Dispatchers.IO) {
+                                            picture?.let { uri ->
+                                                context.contentResolver.openInputStream(
+                                                    uri
+                                                )?.use { input -> input.readBytes() }
+                                            }
+                                        }
+
+                                        val contentType =
+                                            picture?.let { context.contentResolver.getType(it) }
+
+                                        // Create the identity
+                                        viewModel.createIdentity(name, bio, imageBytes, contentType)
+
+                                        // Navigate to the home screen if successful
+                                        navigator.navigate(Screen.Home)
+                                    } catch (e: Exception) {
+                                        // Error is handled by viewModel.showError inside createIdentity
+                                    }
+                                }
+                            },
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .height(ButtonDefaults.MediumContainerHeight),
+                            enabled = name.isNotBlank() && !isLoggedIn,
+                        ) {
+                            if (isLoggedIn) {
+                                LoadingIndicator()
+                            } else {
+                                Text(
+                                    text = "Continue",
+                                    style = MaterialTheme.typography.titleMediumEmphasized,
+                                )
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    )
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/OnboardingScreen.kt

@@ -0,0 +1,218 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedButton
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.geometry.Size
+import androidx.compose.ui.graphics.ColorFilter
+import androidx.compose.ui.graphics.drawscope.rotate
+import androidx.compose.ui.graphics.drawscope.translate
+import androidx.compose.ui.graphics.painter.Painter
+import androidx.compose.ui.text.LinkAnnotation
+import androidx.compose.ui.text.SpanStyle
+import androidx.compose.ui.text.TextLinkStyles
+import androidx.compose.ui.text.buildAnnotatedString
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.coop
+import org.jetbrains.compose.resources.painterResource
+import su.reya.coop.LocalNavigator
+import su.reya.coop.LocalSnackbarHostState
+import su.reya.coop.Screen
+import su.reya.coop.shared.getExpressiveFontFamily
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun OnboardingScreen() {
+    val snackbarHostState = LocalSnackbarHostState.current
+    val navigator = LocalNavigator.current
+
+    val logoPainter = painterResource(Res.drawable.coop)
+    val expressiveFont = getExpressiveFontFamily()
+    val annotatedText = buildAnnotatedString {
+        append("By using Coop, you agree to accept\nour ")
+        // Push "Terms of Use" link
+        pushLink(
+            LinkAnnotation.Url(
+                url = "https://coop.free/terms",
+                styles = TextLinkStyles(
+                    style = SpanStyle(
+                        color = MaterialTheme.colorScheme.onSecondaryContainer,
+                        fontWeight = FontWeight.SemiBold,
+                    )
+                )
+            )
+        )
+        append("Terms of Use")
+        pop()
+        append(" and ")
+        // Push "Privacy Policy" link
+        pushLink(
+            LinkAnnotation.Url(
+                url = "https://coop.free/privacy",
+                styles = TextLinkStyles(
+                    style = SpanStyle(
+                        color = MaterialTheme.colorScheme.onSecondaryContainer,
+                        fontWeight = FontWeight.SemiBold,
+                    )
+                )
+            )
+        )
+        append("Privacy Policy")
+        pop()
+        append(".")
+    }
+
+
+    Scaffold(
+        containerColor = MaterialTheme.colorScheme.secondaryContainer,
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        content = { innerPadding ->
+            Box(modifier = Modifier.fillMaxSize()) {
+                LogoRepeatingBackground(
+                    painter = logoPainter,
+                    logosPerRow = 6,
+                    rotationDegrees = -25f,
+                    horizontalOffset = 0.5f
+                )
+                Column(
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .padding(bottom = innerPadding.calculateBottomPadding() + 16.dp),
+                ) {
+                    Spacer(modifier = Modifier.weight(2f))
+                    Surface(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .padding(24.dp),
+                        shape = RoundedCornerShape(16.dp),
+                        color = MaterialTheme.colorScheme.surface,
+                        contentColor = MaterialTheme.colorScheme.onSurface,
+                        shadowElevation = 4.dp,
+                    ) {
+                        Column(
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .padding(24.dp),
+                        ) {
+                            Text(
+                                text = "Get Started",
+                                style = MaterialTheme.typography.headlineSmallEmphasized.copy(
+                                    fontFamily = expressiveFont,
+                                ),
+                                fontWeight = FontWeight.SemiBold,
+                            )
+                            Spacer(modifier = Modifier.size(8.dp))
+                            Text(
+                                text = "Coop is a secure and easy to use messaging app. All your communications are encrypted and private by default.",
+                                style = MaterialTheme.typography.bodyMedium,
+                                color = MaterialTheme.colorScheme.onSurfaceVariant,
+                            )
+                            Spacer(modifier = Modifier.size(24.dp))
+                            Button(
+                                onClick = { navigator.navigate(Screen.NewIdentity) },
+                                modifier = Modifier
+                                    .fillMaxWidth()
+                                    .size(ButtonDefaults.MediumContainerHeight),
+                            ) {
+                                Text(
+                                    text = "Start Messaging",
+                                    style = MaterialTheme.typography.titleMediumEmphasized,
+                                )
+                            }
+                            Spacer(modifier = Modifier.size(8.dp))
+                            OutlinedButton(
+                                onClick = { navigator.navigate(Screen.Import) },
+                                modifier = Modifier
+                                    .fillMaxWidth()
+                                    .height(ButtonDefaults.MediumContainerHeight),
+                            ) {
+                                Text(
+                                    text = "Add an Existing Identity",
+                                    style = MaterialTheme.typography.titleMedium,
+                                )
+                            }
+                        }
+                    }
+                    Text(
+                        text = annotatedText,
+                        style = MaterialTheme.typography.bodySmall,
+                        color = MaterialTheme.colorScheme.onSecondaryContainer,
+                        textAlign = TextAlign.Center,
+                        modifier = Modifier.fillMaxWidth(),
+                    )
+                }
+            }
+        }
+    )
+}
+
+@Composable
+fun LogoRepeatingBackground(
+    painter: Painter,
+    logosPerRow: Int,
+    rotationDegrees: Float = 0f,
+    horizontalOffset: Float = 0.5f
+) {
+    val tintColor = MaterialTheme.colorScheme.onSecondaryContainer
+
+    Canvas(modifier = Modifier.fillMaxSize()) {
+        val canvasWidth = size.width
+        val canvasHeight = size.height
+        val logoSize = canvasWidth / logosPerRow
+
+        val offsetX = logoSize * horizontalOffset
+        val extraPadding = 2
+
+        val cols = logosPerRow + (extraPadding * 2)
+        val rows = (canvasHeight / logoSize).toInt() + 1
+
+        for (row in 0 until rows) {
+            for (col in -extraPadding until cols) {
+                val px = (col * logoSize) - offsetX
+                val py = row * logoSize
+
+                rotate(
+                    degrees = rotationDegrees,
+                    pivot = Offset(
+                        px + logoSize / 2,
+                        py + logoSize / 2
+                    )
+                ) {
+                    translate(left = px, top = py) {
+                        with(painter) {
+                            draw(
+                                size = Size(logoSize, logoSize),
+                                alpha = 0.1f,
+                                colorFilter = ColorFilter.tint(
+                                    tintColor
+                                )
+                            )
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/ProfileScreen.kt

@@ -0,0 +1,240 @@
+package su.reya.coop.screens
+
+import android.content.Intent
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.FilledTonalIconButton
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.ListItemDefaults
+import androidx.compose.material3.MaterialShapes
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SegmentedListItem
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.material3.toShape
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import coop.composeapp.generated.resources.ic_chat
+import coop.composeapp.generated.resources.ic_share
+import kotlinx.coroutines.launch
+import org.jetbrains.compose.resources.painterResource
+import rust.nostr.sdk.PublicKey
+import su.reya.coop.LocalNavigator
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalSnackbarHostState
+import su.reya.coop.Screen
+import su.reya.coop.shared.Avatar
+import su.reya.coop.shared.getExpressiveFontFamily
+import su.reya.coop.short
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ProfileScreen(pubkey: String) {
+    val pubkey = runCatching { PublicKey.parse(pubkey) }.getOrNull() ?: return
+
+    val context = LocalContext.current
+    val snackbarHostState = LocalSnackbarHostState.current
+    val navigator = LocalNavigator.current
+    val viewModel = LocalNostrViewModel.current
+
+    val scope = rememberCoroutineScope()
+    val metadataFlow = remember(pubkey) { viewModel.getMetadata(pubkey) }
+    val metadata by metadataFlow.collectAsState(initial = null)
+
+    val profile = metadata?.asRecord()
+    val displayName = profile?.displayName ?: profile?.name ?: "No name"
+    val nip05 = profile?.nip05 ?: pubkey.short()
+    val picture = profile?.picture
+    val details = remember(profile) {
+        listOf(
+            "Username:" to (profile?.name ?: "None"),
+            "Website:" to (profile?.website ?: "None"),
+            "Lightning Address:" to (profile?.lud16 ?: "None"),
+        )
+    }
+
+    Scaffold(
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = { },
+                navigationIcon = {
+                    IconButton(onClick = { navigator.goBack() }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                )
+            )
+        },
+        content = { innerPadding ->
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(innerPadding),
+                horizontalAlignment = Alignment.CenterHorizontally,
+                verticalArrangement = Arrangement.spacedBy(16.dp),
+            ) {
+                Column(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(horizontal = 16.dp)
+                        .weight(1f),
+                    verticalArrangement = Arrangement.Center,
+                    horizontalAlignment = Alignment.CenterHorizontally
+                ) {
+                    Box(
+                        modifier = Modifier
+                            .size(120.dp)
+                            .clip(MaterialShapes.Cookie9Sided.toShape()),
+                        contentAlignment = Alignment.Center
+                    ) {
+                        Avatar(
+                            picture = picture,
+                            description = "Profile picture",
+                            modifier = Modifier.fillMaxSize(),
+                            shape = MaterialShapes.Cookie9Sided.toShape(),
+                        )
+                    }
+                    Spacer(modifier = Modifier.size(8.dp))
+                    Column(
+                        horizontalAlignment = Alignment.CenterHorizontally,
+                        verticalArrangement = Arrangement.spacedBy(4.dp),
+                    ) {
+                        Text(
+                            text = displayName,
+                            textAlign = TextAlign.Center,
+                            style = MaterialTheme.typography.titleLargeEmphasized.copy(
+                                fontFamily = getExpressiveFontFamily()
+                            ),
+                        )
+                        Text(
+                            text = nip05,
+                            textAlign = TextAlign.Center,
+                            style = MaterialTheme.typography.titleSmall
+                        )
+                    }
+                    Spacer(modifier = Modifier.size(24.dp))
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.spacedBy(8.dp),
+                    ) {
+                        Column(
+                            modifier = Modifier.weight(1f),
+                            horizontalAlignment = Alignment.CenterHorizontally,
+                            verticalArrangement = Arrangement.spacedBy(4.dp),
+                        ) {
+                            FilledTonalIconButton(
+                                onClick = {
+                                    scope.launch {
+                                        try {
+                                            val roomId = viewModel.createChatRoom(listOf(pubkey))
+                                            navigator.navigate(Screen.Chat(roomId))
+                                        } catch (e: Exception) {
+                                            e.message?.let { snackbarHostState.showSnackbar(it) }
+                                        }
+                                    }
+                                },
+                                modifier = Modifier
+                                    .fillMaxWidth()
+                                    .height(ButtonDefaults.MediumContainerHeight),
+                            ) {
+                                Icon(
+                                    painter = painterResource(Res.drawable.ic_chat),
+                                    contentDescription = "New Chat"
+                                )
+                            }
+                            Text(
+                                text = "Message",
+                                style = MaterialTheme.typography.labelSmall
+                            )
+                        }
+                        Column(
+                            modifier = Modifier.weight(1f),
+                            horizontalAlignment = Alignment.CenterHorizontally,
+                            verticalArrangement = Arrangement.spacedBy(4.dp),
+                        ) {
+                            FilledTonalIconButton(
+                                onClick = {
+                                    val sendIntent = Intent().apply {
+                                        action = Intent.ACTION_SEND
+                                        putExtra(Intent.EXTRA_TEXT, pubkey.toBech32())
+                                        type = "text/plain"
+                                    }
+                                    val shareIntent = Intent.createChooser(sendIntent, null)
+                                    context.startActivity(shareIntent)
+                                },
+                                modifier = Modifier
+                                    .fillMaxWidth()
+                                    .height(ButtonDefaults.MediumContainerHeight),
+                            ) {
+                                Icon(
+                                    painter = painterResource(Res.drawable.ic_share),
+                                    contentDescription = "Share"
+                                )
+                            }
+                            Text(
+                                text = "Share",
+                                style = MaterialTheme.typography.labelMedium
+                            )
+                        }
+                    }
+                }
+                Column(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(horizontal = 16.dp)
+                        .weight(1.5f),
+                    verticalArrangement = Arrangement.spacedBy(16.dp),
+                ) {
+                    Column(
+                        modifier = Modifier.fillMaxWidth(),
+                        verticalArrangement = Arrangement.spacedBy(ListItemDefaults.SegmentedGap),
+                    ) {
+                        details.forEachIndexed { index, (label, value) ->
+                            SegmentedListItem(
+                                onClick = { },
+                                shapes = ListItemDefaults.segmentedShapes(
+                                    index = index,
+                                    count = details.size
+                                ),
+                                content = { Text(label) },
+                                supportingContent = { Text(value) },
+                            )
+                        }
+                    }
+                }
+            }
+        }
+    )
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/RelayScreen.kt

@@ -0,0 +1,236 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.ListItemDefaults
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SegmentedListItem
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.mutableStateMapOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import org.jetbrains.compose.resources.painterResource
+import rust.nostr.sdk.RelayMetadata
+import rust.nostr.sdk.RelayUrl
+import su.reya.coop.LocalNavigator
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalSnackbarHostState
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun RelayScreen() {
+    val navigator = LocalNavigator.current
+    val snackbarHostState = LocalSnackbarHostState.current
+    val viewModel = LocalNostrViewModel.current
+
+    val msgRelayList = remember { mutableStateListOf<RelayUrl>() }
+    val relayList = remember { mutableStateMapOf<RelayUrl, RelayMetadata?>() }
+
+    val inboxRelays by remember {
+        derivedStateOf {
+            relayList.filter { it.value == RelayMetadata.READ || it.value == null }.keys.toList()
+        }
+    }
+
+    val outboxRelays by remember {
+        derivedStateOf {
+            relayList.filter { it.value == RelayMetadata.WRITE || it.value == null }.keys.toList()
+        }
+    }
+
+    LaunchedEffect(Unit) {
+        relayList.putAll(viewModel.currentUserRelayList())
+        msgRelayList.addAll(viewModel.currentUserMsgRelayList())
+    }
+
+    Scaffold(
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        topBar = {
+            TopAppBar(
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                ),
+                title = {
+                    Text(
+                        text = "Relay Management",
+                        style = MaterialTheme.typography.titleMediumEmphasized
+                    )
+                },
+                navigationIcon = {
+                    IconButton(onClick = { navigator.goBack() }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                }
+            )
+        },
+        content = { innerPadding ->
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(innerPadding)
+                    .padding(16.dp),
+                horizontalAlignment = Alignment.CenterHorizontally,
+                verticalArrangement = Arrangement.spacedBy(24.dp),
+            ) {
+                Column(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalArrangement = Arrangement.spacedBy(8.dp),
+                ) {
+                    Text(
+                        text = "Messaging Relay List",
+                        style = MaterialTheme.typography.titleMediumEmphasized,
+                    )
+                    Column(
+                        modifier = Modifier.fillMaxWidth(),
+                        verticalArrangement = Arrangement.spacedBy(ListItemDefaults.SegmentedGap),
+                    ) {
+                        if (msgRelayList.isNotEmpty()) {
+                            msgRelayList.forEachIndexed { index, relayUrl ->
+                                SegmentedListItem(
+                                    onClick = { },
+                                    shapes = ListItemDefaults.segmentedShapes(
+                                        index = index,
+                                        count = msgRelayList.size
+                                    ),
+                                    content = { Text(text = relayUrl.toString()) },
+                                )
+                            }
+                        } else {
+                            Surface(
+                                color = MaterialTheme.colorScheme.surface,
+                                modifier = Modifier.fillMaxWidth(),
+                                shape = RoundedCornerShape(8.dp)
+                            ) {
+                                Box(
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .padding(16.dp),
+                                    contentAlignment = Alignment.Center
+                                ) {
+                                    Text(
+                                        text = "No relays configured",
+                                        style = MaterialTheme.typography.labelMediumEmphasized,
+                                    )
+                                }
+                            }
+                        }
+                    }
+                }
+                Column(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalArrangement = Arrangement.spacedBy(8.dp),
+                ) {
+                    Text(
+                        text = "Inbox Relays",
+                        style = MaterialTheme.typography.titleMediumEmphasized,
+                    )
+                    Column(
+                        modifier = Modifier.fillMaxWidth(),
+                        verticalArrangement = Arrangement.spacedBy(ListItemDefaults.SegmentedGap),
+                    ) {
+                        if (inboxRelays.isNotEmpty()) {
+                            inboxRelays.forEachIndexed { index, relayUrl ->
+                                SegmentedListItem(
+                                    onClick = { },
+                                    shapes = ListItemDefaults.segmentedShapes(
+                                        index = index,
+                                        count = inboxRelays.size
+                                    ),
+                                    content = { Text(text = relayUrl.toString()) },
+                                )
+                            }
+                        } else {
+                            Surface(
+                                color = MaterialTheme.colorScheme.surface,
+                                modifier = Modifier.fillMaxWidth(),
+                                shape = RoundedCornerShape(8.dp)
+                            ) {
+                                Box(
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .padding(16.dp),
+                                    contentAlignment = Alignment.Center
+                                ) {
+                                    Text(
+                                        text = "No relays configured",
+                                        style = MaterialTheme.typography.labelMediumEmphasized,
+                                    )
+                                }
+                            }
+                        }
+                    }
+                }
+                Column(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalArrangement = Arrangement.spacedBy(8.dp),
+                ) {
+                    Text(
+                        text = "Outbox Relays",
+                        style = MaterialTheme.typography.titleMediumEmphasized,
+                    )
+                    Column(
+                        modifier = Modifier.fillMaxWidth(),
+                        verticalArrangement = Arrangement.spacedBy(ListItemDefaults.SegmentedGap),
+                    ) {
+                        if (outboxRelays.isNotEmpty()) {
+                            outboxRelays.forEachIndexed { index, relayUrl ->
+                                SegmentedListItem(
+                                    onClick = { },
+                                    shapes = ListItemDefaults.segmentedShapes(
+                                        index = index,
+                                        count = outboxRelays.size
+                                    ),
+                                    content = { Text(text = relayUrl.toString()) },
+                                )
+                            }
+                        } else {
+                            Surface(
+                                color = MaterialTheme.colorScheme.surface,
+                                modifier = Modifier.fillMaxWidth(),
+                                shape = RoundedCornerShape(8.dp)
+                            ) {
+                                Box(
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .padding(16.dp),
+                                    contentAlignment = Alignment.Center
+                                ) {
+                                    Text(
+                                        text = "No relays configured",
+                                        style = MaterialTheme.typography.labelMediumEmphasized,
+                                    )
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    )
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/ScanScreen.kt

@@ -0,0 +1,110 @@
+package su.reya.coop.screens
+
+import android.annotation.SuppressLint
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.border
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.geometry.Size
+import androidx.compose.ui.graphics.BlendMode
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.dp
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import org.jetbrains.compose.resources.painterResource
+import org.publicvalue.multiplatform.qrcode.CameraPosition
+import org.publicvalue.multiplatform.qrcode.CodeType
+import org.publicvalue.multiplatform.qrcode.ScannerWithPermissions
+import su.reya.coop.LocalNavigator
+import su.reya.coop.LocalScanResult
+import su.reya.coop.LocalSnackbarHostState
+
+@SuppressLint("UnusedMaterial3ScaffoldPaddingParameter")
+@Composable
+fun ScanScreen() {
+    val navigator = LocalNavigator.current
+    val snackbarHostState = LocalSnackbarHostState.current
+    val qrScanResult = LocalScanResult.current
+
+    Scaffold(
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = {
+                    Text(
+                        text = "Scan QR",
+                        style = MaterialTheme.typography.titleMediumEmphasized
+                    )
+                },
+                navigationIcon = {
+                    IconButton(onClick = { navigator.goBack() }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = Color.Transparent,
+                    titleContentColor = Color.White,
+                    navigationIconContentColor = Color.White,
+                )
+            )
+        },
+    ) { innerPadding ->
+        Box(modifier = Modifier.fillMaxSize()) {
+            ScannerWithPermissions(
+                modifier = Modifier.fillMaxSize(),
+                onScanned = {
+                    qrScanResult.content = it
+                    navigator.goBack()
+                    true
+                },
+                types = listOf(CodeType.QR),
+                cameraPosition = CameraPosition.BACK,
+                enableTorch = false
+            )
+            Canvas(modifier = Modifier.fillMaxSize()) {
+                val scannerSize = 250.dp.toPx()
+                val left = (size.width - scannerSize) / 2
+                val top = (size.height - scannerSize) / 2
+                drawRect(color = Color.Black.copy(alpha = 0.6f))
+                drawRect(
+                    color = Color.Transparent,
+                    topLeft = Offset(left, top),
+                    size = Size(scannerSize, scannerSize),
+                    blendMode = BlendMode.Clear
+                )
+            }
+            Box(
+                modifier = Modifier
+                    .size(250.dp)
+                    .align(Alignment.Center)
+                    .border(2.dp, Color.White, RoundedCornerShape(12.dp))
+            )
+            Text(
+                text = "Scan a Nostr address",
+                style = MaterialTheme.typography.titleSmallEmphasized,
+                color = Color.White,
+                modifier = Modifier
+                    .align(Alignment.BottomCenter)
+                    .padding(bottom = 64.dp)
+            )
+        }
+    }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/shared/Avatar.kt

@@ -0,0 +1,38 @@
+package su.reya.coop.shared
+
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Shape
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.dp
+import coil3.compose.AsyncImage
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.avatar
+import org.jetbrains.compose.resources.painterResource
+
+@Composable
+fun Avatar(
+    picture: String?,
+    description: String?,
+    modifier: Modifier = Modifier,
+    size: Dp = 48.dp,
+    shape: Shape = CircleShape
+) {
+    val placeholder = painterResource(Res.drawable.avatar)
+
+    AsyncImage(
+        model = picture,
+        contentDescription = description,
+        modifier = modifier
+            .size(size)
+            .clip(shape),
+        contentScale = ContentScale.Crop,
+        fallback = placeholder,
+        error = placeholder,
+        placeholder = placeholder
+    )
+}

composeApp/src/androidMain/kotlin/su/reya/coop/shared/Font.kt

@@ -0,0 +1,13 @@
+package su.reya.coop.shared
+
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import coop.composeapp.generated.resources.PaytoneOne_Regular
+import coop.composeapp.generated.resources.Res
+import org.jetbrains.compose.resources.Font
+
+@Composable
+fun getExpressiveFontFamily() = FontFamily(
+    Font(Res.font.PaytoneOne_Regular, FontWeight.Normal)
+)

composeApp/src/androidMain/kotlin/su/reya/coop/shared/RoomHelper.kt

@@ -0,0 +1,33 @@
+package su.reya.coop.shared
+
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.flow.map
+import su.reya.coop.NostrViewModel
+import su.reya.coop.Room
+import su.reya.coop.short
+
+fun Room.displayNameFlow(viewModel: NostrViewModel): Flow<String> {
+    if (!subject.isNullOrBlank()) return flowOf<String>(subject!!)
+
+    val memberFlows = members.map { viewModel.getMetadata(it) }
+
+    return combine(memberFlows) { metadataArray ->
+        if (isGroup()) {
+            val profiles = metadataArray.map { it?.asRecord() }
+            val names = profiles.take(2).mapNotNull { it?.name ?: it?.displayName }
+            var combined = names.joinToString(", ")
+            if (profiles.size > 2) combined += ", +${profiles.size - 2}"
+            combined.ifBlank { "Unknown group" }
+        } else {
+            val profile = metadataArray.firstOrNull()?.asRecord()
+            profile?.name ?: profile?.displayName ?: members.firstOrNull()?.short() ?: "Unknown"
+        }
+    }
+}
+
+fun Room.pictureFlow(viewModel: NostrViewModel): Flow<String?> {
+    val firstMember = members.firstOrNull() ?: return kotlinx.coroutines.flow.flowOf(null)
+    return viewModel.getMetadata(firstMember).map { it?.asRecord()?.picture }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/storage/SecretCrypto.kt

@@ -0,0 +1,78 @@
+package su.reya.coop.coop.storage
+
+import android.security.keystore.KeyGenParameterSpec
+import android.security.keystore.KeyProperties
+import android.util.Base64
+import java.nio.charset.StandardCharsets
+import java.security.KeyStore
+import javax.crypto.Cipher
+import javax.crypto.KeyGenerator
+import javax.crypto.SecretKey
+import javax.crypto.spec.GCMParameterSpec
+
+data class SecretEntry(
+    val encrypted: String,
+    val iv: String
+)
+
+class SecretCrypto {
+    private val keyAlias = "coop"
+    private val keyStoreType = "AndroidKeyStore"
+    private val transformation = "AES/GCM/NoPadding"
+
+    fun encrypt(content: String): SecretEntry {
+        // Initialize cipher
+        val cipher = Cipher.getInstance(transformation)
+        cipher.init(Cipher.ENCRYPT_MODE, getOrCreateKey())
+
+        // Encrypt content
+        val encrypted = cipher.doFinal(content.toByteArray())
+        val iv = cipher.iv
+
+        return SecretEntry(
+            encrypted = Base64.encodeToString(encrypted, Base64.NO_WRAP),
+            iv = Base64.encodeToString(iv, Base64.NO_WRAP)
+        )
+    }
+
+    fun decrypt(entry: SecretEntry): String {
+        val encrypted = Base64.decode(entry.encrypted, Base64.NO_WRAP)
+        val iv = Base64.decode(entry.iv, Base64.NO_WRAP)
+
+        // Initialize cipher
+        val cipher = Cipher.getInstance(transformation)
+        val spec = GCMParameterSpec(128, iv)
+        cipher.init(Cipher.DECRYPT_MODE, getOrCreateKey(), spec)
+
+        // Decrypt content
+        val plaintext = cipher.doFinal(encrypted)
+
+        return String(plaintext, StandardCharsets.UTF_8)
+    }
+
+    private fun getOrCreateKey(): SecretKey {
+        val keyStore = KeyStore.getInstance(keyStoreType).apply { load(null) }
+        val existingKey = keyStore.getKey(keyAlias, null)
+
+        // Return existing key if available
+        if (existingKey is SecretKey) return existingKey
+
+        // Construct a new key generator
+        val keyGenerator = KeyGenerator.getInstance(KeyProperties.KEY_ALGORITHM_AES, keyStoreType)
+
+        // Initialize key generation parameters
+        val spec = KeyGenParameterSpec.Builder(
+            keyAlias,
+            KeyProperties.PURPOSE_ENCRYPT or KeyProperties.PURPOSE_DECRYPT
+        )
+            .setBlockModes(KeyProperties.BLOCK_MODE_GCM)
+            .setEncryptionPaddings(KeyProperties.ENCRYPTION_PADDING_NONE)
+            .setKeySize(256)
+            .build()
+
+        // Generate a new key
+        keyGenerator.init(spec)
+
+        return keyGenerator.generateKey()
+    }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/storage/SecretStore.kt

@@ -0,0 +1,43 @@
+package su.reya.coop.coop.storage
+
+import android.content.Context
+import androidx.datastore.preferences.core.edit
+import androidx.datastore.preferences.core.stringPreferencesKey
+import androidx.datastore.preferences.preferencesDataStore
+import kotlinx.coroutines.flow.first
+import su.reya.coop.storage.SecretStorage
+
+private val Context.dataStore by preferencesDataStore("secret_store")
+
+class SecretStore(private val context: Context) : SecretStorage {
+    private val crypto = SecretCrypto()
+
+    override suspend fun set(key: String, value: String) {
+        val entry = crypto.encrypt(value)
+
+        context.dataStore.edit { prefs ->
+            prefs[stringPreferencesKey("${key}_encrypted")] = entry.encrypted
+            prefs[stringPreferencesKey("${key}_iv")] = entry.iv
+        }
+    }
+
+    override suspend fun get(key: String): String? {
+        val prefs = context.dataStore.data.first()
+        val encrypted = prefs[stringPreferencesKey("${key}_encrypted")] ?: return null
+        val iv = prefs[stringPreferencesKey("${key}_iv")] ?: return null
+
+        return crypto.decrypt(SecretEntry(encrypted, iv))
+    }
+
+    override suspend fun clear(key: String) {
+        context.dataStore.edit { prefs ->
+            prefs.remove(stringPreferencesKey("${key}_encrypted"))
+            prefs.remove(stringPreferencesKey("${key}_iv"))
+        }
+    }
+
+    override suspend fun has(key: String): Boolean {
+        val prefs = context.dataStore.data.first()
+        return prefs[stringPreferencesKey("${key}_encrypted")] != null
+    }
+}

composeApp/src/androidMain/res/drawable/coop.xml

@@ -0,0 +1,22 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="200dp"
+    android:height="200dp"
+    android:viewportWidth="120"
+    android:viewportHeight="120">
+
+  <group
+      android:translateX="20"
+      android:translateY="20">
+    <path
+        android:pathData="M37.54,74C52.75,74 65.08,61.581 65.08,46.262C65.08,44.87 63.959,43.74 62.576,43.74H12.504C11.12,43.74 10,44.87 10,46.262C10,61.581 22.33,74 37.54,74Z"
+        android:fillColor="#000000"
+        android:fillType="evenOdd"/>
+    <path
+        android:pathData="M49.707,14.321L49.493,14.263L49.279,14.207L49.062,14.153L48.843,14.099L48.627,14.049L48.411,14L48.194,13.952L47.976,13.907L47.748,13.861L47.518,13.817L47.287,13.775L47.055,13.735L46.94,13.715L46.828,13.697L46.604,13.662L46.381,13.629L46.157,13.598L45.927,13.568L45.696,13.54L45.467,13.514L45.236,13.49L45.005,13.467L44.774,13.447L44.543,13.428L44.31,13.412L44.08,13.398L43.851,13.385L43.623,13.375L43.392,13.366L43.159,13.359L42.926,13.354L42.694,13.351L42.46,13.35H42.184L41.903,13.356L41.623,13.363L41.343,13.373L41.063,13.385L40.784,13.401L40.504,13.419L40.224,13.44L39.932,13.466L39.64,13.494L39.357,13.524L39.074,13.558L38.781,13.596L38.489,13.637L38.209,13.679L37.929,13.724L37.649,13.772L37.369,13.823L37.103,13.875L36.836,13.929L36.57,13.986L36.418,14.02L36.306,14.045L36.026,14.111L35.746,14.18L35.466,14.252L35.187,14.328L34.917,14.403L34.648,14.482L34.512,14.523L34.376,14.564L34.109,14.649L33.847,14.734L33.587,14.821C33.587,14.821 32.45,13.249 32.536,12.136C32.644,10.731 33.588,9.592 34.837,9.163C34.764,8.837 34.687,8.51 34.713,8.16C34.859,6.274 36.501,4.864 38.377,5.01C39.485,5.096 40.376,5.734 40.932,6.605C41.616,5.83 42.598,5.339 43.705,5.425C45.449,5.561 46.733,7.01 46.794,8.726C47.033,8.691 47.264,8.617 47.516,8.637C49.394,8.783 50.796,10.429 50.65,12.315C50.58,13.232 49.707,14.321 49.707,14.321Z"
+        android:fillColor="#000000"/>
+    <path
+        android:pathData="M14.92,41.088C14.92,25.769 27.25,13.35 42.46,13.35C57.669,13.35 70,25.769 70,41.088C70,42.481 68.879,43.61 67.496,43.61H17.424C16.04,43.61 14.92,42.481 14.92,41.088ZM54.627,26.453C54.476,26.411 54.325,26.389 54.172,26.389C54.018,26.389 53.867,26.411 53.717,26.453C53.566,26.496 53.42,26.561 53.279,26.645C53.138,26.73 53.003,26.833 52.876,26.956C52.748,27.079 52.63,27.218 52.522,27.375C52.413,27.531 52.316,27.701 52.232,27.885C52.147,28.068 52.075,28.262 52.016,28.467C51.957,28.671 51.913,28.882 51.883,29.098C51.854,29.315 51.839,29.533 51.839,29.755C51.839,29.976 51.854,30.195 51.883,30.411C51.913,30.628 51.957,30.838 52.016,31.043C52.075,31.247 52.147,31.441 52.232,31.625C52.316,31.808 52.413,31.979 52.522,32.135C52.63,32.291 52.748,32.43 52.876,32.553C53.003,32.676 53.138,32.78 53.279,32.864C53.42,32.949 53.566,33.013 53.717,33.056C53.867,33.1 54.018,33.121 54.172,33.121C54.325,33.121 54.476,33.1 54.627,33.056C54.777,33.013 54.923,32.949 55.064,32.864C55.206,32.78 55.341,32.676 55.468,32.553C55.595,32.43 55.714,32.291 55.822,32.135C55.93,31.979 56.027,31.808 56.112,31.625C56.197,31.441 56.268,31.247 56.327,31.043C56.386,30.838 56.431,30.628 56.46,30.411C56.49,30.195 56.505,29.976 56.505,29.755C56.505,29.533 56.49,29.315 56.46,29.098C56.431,28.882 56.386,28.671 56.327,28.467C56.268,28.262 56.197,28.068 56.112,27.885C56.027,27.701 55.93,27.531 55.822,27.375C55.714,27.218 55.595,27.079 55.468,26.956C55.341,26.833 55.206,26.73 55.064,26.645C54.923,26.561 54.777,26.496 54.627,26.453Z"
+        android:fillColor="#000000"
+        android:fillType="evenOdd"/>
+  </group>
+</vector>

composeApp/src/androidMain/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
+    <background android:drawable="@color/ic_launcher_background"/>
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+    <monochrome android:drawable="@mipmap/ic_launcher_monochrome"/>
 </adaptive-icon>

composeApp/src/androidMain/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
+    <background android:drawable="@color/ic_launcher_background"/>
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+    <monochrome android:drawable="@mipmap/ic_launcher_monochrome"/>
 </adaptive-icon>

composeApp/src/androidMain/res/values/colors.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="secondaryContainer">#F8FF37</color>
+</resources>

composeApp/src/androidMain/res/values/ic_launcher_background.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#F8FF37</color>
+</resources>

composeApp/src/androidMain/res/values/themes.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="Theme.App.Starting" parent="Theme.SplashScreen">
+        <item name="windowSplashScreenBackground">@color/secondaryContainer</item>
+        <item name="windowSplashScreenAnimatedIcon">@drawable/coop</item>
+        <item name="postSplashScreenTheme">@android:style/Theme.Material.Light.NoActionBar</item>
+    </style>
+</resources>

gradle.properties

@@ -10,3 +10,13 @@ org.gradle.caching=true
 #Android
 android.nonTransitiveRClass=true
 android.useAndroidX=true
+android.defaults.buildfeatures.resvalues=true
+android.sdk.defaultTargetSdkToCompileSdkIfUnset=false
+android.enableAppCompileTimeRClass=false
+android.usesSdkInManifest.disallowed=false
+android.uniquePackageNames=false
+android.dependency.useConstraints=true
+android.r8.strictFullModeForKeepRules=false
+android.r8.optimizedResourceShrinking=false
+android.builtInKotlin=false
+android.newDsl=false

gradle/libs.versions.toml

@@ -1,20 +1,27 @@
 [versions]
-agp = "8.13.2"
+agp = "9.2.1"
-android-compileSdk = "36"
+android-compileSdk = "37"
-android-minSdk = "24"
+android-minSdk = "26"
-android-targetSdk = "36"
+android-targetSdk = "37"
 androidx-activity = "1.13.0"
 androidx-appcompat = "1.7.1"
 androidx-core = "1.18.0"
 androidx-espresso = "3.7.0"
 androidx-lifecycle = "2.10.0"
 androidx-testExt = "1.3.0"
-composeMultiplatform = "1.10.3"
+androidx-splashscreen = "1.2.0"
+composeMultiplatform = "1.11.0"
+datastorePreferences = "1.2.1"
 junit = "4.13.2"
-kotlin = "2.3.20"
+kotlin = "2.3.21"
-material3 = "1.10.0-alpha05"
+kotlinx-serialization = "1.11.0"
+material3 = "1.11.0-alpha07"
+multiplatform-nav3-ui = "1.1.1"
+ktor = "3.5.0"
 
 [libraries]
+androidx-datastore-preferences = { module = "androidx.datastore:datastore-preferences", version.ref = "datastorePreferences" }
+androidx-datastore = { module = "androidx.datastore:datastore", version.ref = "datastorePreferences" }
 kotlin-test = { module = "org.jetbrains.kotlin:kotlin-test", version.ref = "kotlin" }
 kotlin-testJunit = { module = "org.jetbrains.kotlin:kotlin-test-junit", version.ref = "kotlin" }
 junit = { module = "junit:junit", version.ref = "junit" }
@@ -22,16 +29,27 @@ androidx-core-ktx = { module = "androidx.core:core-ktx", version.ref = "androidx
 androidx-testExt-junit = { module = "androidx.test.ext:junit", version.ref = "androidx-testExt" }
 androidx-espresso-core = { module = "androidx.test.espresso:espresso-core", version.ref = "androidx-espresso" }
 androidx-appcompat = { module = "androidx.appcompat:appcompat", version.ref = "androidx-appcompat" }
+androidx-core-splashscreen = { module = "androidx.core:core-splashscreen", version.ref = "androidx-splashscreen" }
 androidx-activity-compose = { module = "androidx.activity:activity-compose", version.ref = "androidx-activity" }
+kotlinx-serialization-json = { module = "org.jetbrains.kotlinx:kotlinx-serialization-json", version.ref = "kotlinx-serialization" }
 compose-uiTooling = { module = "org.jetbrains.compose.ui:ui-tooling", version.ref = "composeMultiplatform" }
 androidx-lifecycle-viewmodelCompose = { module = "org.jetbrains.androidx.lifecycle:lifecycle-viewmodel-compose", version.ref = "androidx-lifecycle" }
 androidx-lifecycle-runtimeCompose = { module = "org.jetbrains.androidx.lifecycle:lifecycle-runtime-compose", version.ref = "androidx-lifecycle" }
+androidx-lifecycle-process = { group = "androidx.lifecycle", name = "lifecycle-process", version.ref = "androidx-lifecycle" }
 compose-runtime = { module = "org.jetbrains.compose.runtime:runtime", version.ref = "composeMultiplatform" }
 compose-foundation = { module = "org.jetbrains.compose.foundation:foundation", version.ref = "composeMultiplatform" }
 compose-material3 = { module = "org.jetbrains.compose.material3:material3", version.ref = "material3" }
 compose-ui = { module = "org.jetbrains.compose.ui:ui", version.ref = "composeMultiplatform" }
 compose-components-resources = { module = "org.jetbrains.compose.components:components-resources", version.ref = "composeMultiplatform" }
 compose-uiToolingPreview = { module = "org.jetbrains.compose.ui:ui-tooling-preview", version.ref = "composeMultiplatform" }
+ktor-client-core = { module = "io.ktor:ktor-client-core", version.ref = "ktor" }
+ktor-client-okhttp = { module = "io.ktor:ktor-client-okhttp", version.ref = "ktor" }
+ktor-client-darwin = { module = "io.ktor:ktor-client-darwin", version.ref = "ktor" }
+ktor-client-websockets = { module = "io.ktor:ktor-client-websockets", version.ref = "ktor" }
+ktor-client-content-negotiation = { module = "io.ktor:ktor-client-content-negotiation", version.ref = "ktor" }
+ktor-serialization-kotlinx-json = { module = "io.ktor:ktor-serialization-kotlinx-json", version.ref = "ktor" }
+jetbrains-navigation3-ui = { module = "org.jetbrains.androidx.navigation3:navigation3-ui", version.ref = "multiplatform-nav3-ui" }
+jetbrains-lifecycle-viewmodelNavigation3 = { module = "org.jetbrains.androidx.lifecycle:lifecycle-viewmodel-navigation3", version.ref = "androidx-lifecycle" }
 
 [plugins]
 androidApplication = { id = "com.android.application", version.ref = "agp" }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.4.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

shared/build.gradle.kts

@@ -3,6 +3,7 @@ import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 plugins {
     alias(libs.plugins.kotlinMultiplatform)
     alias(libs.plugins.androidLibrary)
+    kotlin("plugin.serialization") version libs.versions.kotlin.get()
 }
 
 kotlin {
@@ -24,7 +25,21 @@ kotlin {
 
     sourceSets {
         commonMain.dependencies {
-            // put your Multiplatform dependencies here
+            implementation(libs.ktor.client.core)
+            implementation(libs.ktor.client.websockets)
+            implementation(libs.ktor.client.content.negotiation)
+            implementation(libs.ktor.serialization.kotlinx.json)
+            implementation(libs.androidx.lifecycle.viewmodelCompose)
+            implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.10.2")
+            implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.8.0")
+            implementation("su.reya:nostr-sdk-kmp:0.2.3")
+            implementation("com.squareup.okio:okio:3.16.2")
+        }
+        androidMain.dependencies {
+            implementation(libs.ktor.client.okhttp)
+        }
+        iosMain.dependencies {
+            implementation(libs.ktor.client.darwin)
         }
         commonTest.dependencies {
             implementation(libs.kotlin.test)

shared/src/androidMain/kotlin/su/reya/coop/Platform.android.kt

@@ -1,9 +0,0 @@
-package su.reya.coop
-
-import android.os.Build
-
-class AndroidPlatform : Platform {
-    override val name: String = "Android ${Build.VERSION.SDK_INT}"
-}
-
-actual fun getPlatform(): Platform = AndroidPlatform()

shared/src/commonMain/kotlin/su/reya/coop/Greeting.kt

@@ -1,9 +0,0 @@
-package su.reya.coop
-
-class Greeting {
-    private val platform = getPlatform()
-
-    fun greet(): String {
-        return "Hello, ${platform.name}!"
-    }
-}

shared/src/commonMain/kotlin/su/reya/coop/Nostr.kt

@@ -0,0 +1,833 @@
+package su.reya.coop
+
+import io.ktor.client.HttpClient
+import io.ktor.client.call.body
+import io.ktor.client.request.get
+import io.ktor.client.statement.HttpResponse
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.supervisorScope
+import rust.nostr.sdk.AckPolicy
+import rust.nostr.sdk.Alphabet
+import rust.nostr.sdk.AsyncNostrSigner
+import rust.nostr.sdk.Client
+import rust.nostr.sdk.ClientBuilder
+import rust.nostr.sdk.ClientNotification
+import rust.nostr.sdk.Contact
+import rust.nostr.sdk.Event
+import rust.nostr.sdk.EventBuilder
+import rust.nostr.sdk.EventId
+import rust.nostr.sdk.Filter
+import rust.nostr.sdk.GossipConfig
+import rust.nostr.sdk.Keys
+import rust.nostr.sdk.Kind
+import rust.nostr.sdk.KindStandard
+import rust.nostr.sdk.LogLevel
+import rust.nostr.sdk.Metadata
+import rust.nostr.sdk.MetadataRecord
+import rust.nostr.sdk.Nip05Address
+import rust.nostr.sdk.Nip05Profile
+import rust.nostr.sdk.NostrDatabase
+import rust.nostr.sdk.NostrGossip
+import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.RelayCapabilities
+import rust.nostr.sdk.RelayMessageEnum
+import rust.nostr.sdk.RelayMetadata
+import rust.nostr.sdk.RelayUrl
+import rust.nostr.sdk.ReqExitPolicy
+import rust.nostr.sdk.ReqTarget
+import rust.nostr.sdk.SendEventTarget
+import rust.nostr.sdk.SingleLetterTag
+import rust.nostr.sdk.SleepWhenIdle
+import rust.nostr.sdk.SubscribeAutoCloseOptions
+import rust.nostr.sdk.Tag
+import rust.nostr.sdk.TagKind
+import rust.nostr.sdk.Timestamp
+import rust.nostr.sdk.UnsignedEvent
+import rust.nostr.sdk.UnwrappedGift
+import rust.nostr.sdk.extractRelayList
+import rust.nostr.sdk.giftWrapAsync
+import rust.nostr.sdk.initLogger
+import rust.nostr.sdk.nip17ExtractRelayList
+import kotlin.time.Duration
+
+object NostrManager {
+    val instance = Nostr()
+}
+
+class Nostr {
+    var client: Client? = null
+        private set
+    var signer: UniversalSigner = UniversalSigner(Keys.generate())
+        private set
+    var deviceSigner: AsyncNostrSigner? = null
+        private set
+    var sentEvents: MutableMap<EventId, List<RelayUrl>> = mutableMapOf()
+        private set
+    var rumorMap: MutableMap<EventId, EventId> = mutableMapOf()
+        private set
+
+    private val isInitialized = MutableStateFlow(false)
+
+    // Add these to the Nostr class
+    private val _newEvents = MutableSharedFlow<UnsignedEvent>(extraBufferCapacity = 100)
+    val newEvents = _newEvents.asSharedFlow()
+
+    private val _metadataUpdates =
+        MutableSharedFlow<Pair<PublicKey, Metadata>>(extraBufferCapacity = 100)
+    val metadataUpdates = _metadataUpdates.asSharedFlow()
+
+    private val _contactListUpdates = MutableSharedFlow<List<PublicKey>>(extraBufferCapacity = 100)
+    val contactListUpdates = _contactListUpdates.asSharedFlow()
+
+    private val _subscriptionClosed = MutableSharedFlow<Unit>(extraBufferCapacity = 10)
+    val subscriptionClosed = _subscriptionClosed.asSharedFlow()
+
+    suspend fun emitNewEvent(event: UnsignedEvent) = _newEvents.emit(event)
+
+    suspend fun emitSubscriptionClosed() = _subscriptionClosed.emit(Unit)
+
+    suspend fun emitMetadataUpdate(pubkey: PublicKey, metadata: Metadata) =
+        _metadataUpdates.emit(pubkey to metadata)
+
+    suspend fun emitContactListUpdate(contacts: List<PublicKey>) =
+        _contactListUpdates.emit(contacts)
+
+    suspend fun init(dbPath: String) {
+        try {
+            if (isInitialized.value) return
+
+            // Initialize the logger for nostr client
+            initLogger(LogLevel.DEBUG)
+
+            // Initialize the database and gossip instance
+            val lmdb = NostrDatabase.lmdb(dbPath)
+            val gossip = NostrGossip.inMemory()
+
+            // Set the idle timeout for relays
+            val idleTimeout = Duration.parse("5m")
+
+            client =
+                ClientBuilder()
+                    .signer(signer)
+                    .database(lmdb)
+                    .gossip(gossip)
+                    .gossipConfig(
+                        GossipConfig()
+                            .noBackgroundRefresh()
+                            .fetchTimeout(Duration.parse("2s"))
+                            .syncIdleTimeout(Duration.parse("100ms"))
+                            .syncInitialTimeout(Duration.parse("100ms"))
+                    )
+                    .verifySubscriptions(false)
+                    .automaticAuthentication(true)
+                    .sleepWhenIdle(SleepWhenIdle.Enabled(idleTimeout))
+                    .build()
+
+            isInitialized.value = true
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to initialize Nostr client: ${e.message}", e)
+        }
+    }
+
+    suspend fun waitUntilInitialized() {
+        isInitialized.first { it }
+    }
+
+    suspend fun connectBootstrapRelays() {
+        // Bootstrap relays
+        client?.addRelay(RelayUrl.parse("wss://relay.primal.net"))
+        client?.addRelay(RelayUrl.parse("wss://user.kindpag.es"))
+        client?.addRelay(RelayUrl.parse("wss://purplepag.es"))
+
+
+        // Indexer relay for NIP-65 discovery
+        client?.addRelay(
+            url = RelayUrl.parse("wss://indexer.coracle.social"),
+            capabilities = RelayCapabilities.gossip()
+        )
+
+        // Connect to all bootstrap relays and wait for all connections to be established
+        client?.connect(Duration.parse("2s"))
+    }
+
+    suspend fun disconnect() {
+        client?.shutdown()
+    }
+
+    suspend fun exit() {
+        signer.switch(Keys.generate())
+        deviceSigner = null
+    }
+
+    suspend fun setSigner(new: AsyncNostrSigner) {
+        try {
+            signer.switch(new)
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to set signer: ${e.message}", e)
+        }
+    }
+
+    fun isSignedByUser(event: Event): Boolean {
+        return try {
+            signer.currentUser == event.author()
+        } catch (e: Exception) {
+            println("Failed to check if event is signed by user: ${e.message}")
+            false
+        }
+    }
+
+    suspend fun getUserMetadata() {
+        try {
+            val author = signer.currentUser ?: throw IllegalStateException("User not signed in")
+
+            // Get the latest metadata event
+            val metadataFilter =
+                Filter().kind(Kind.fromStd(KindStandard.METADATA)).author(author).limit(1u)
+
+            // Get the latest contact list event
+            val contactFilter =
+                Filter().kind(Kind.fromStd(KindStandard.CONTACT_LIST)).author(author).limit(1u)
+
+            // Get the latest messaging relay list event
+            val msgRelayFilter =
+                Filter().kind(Kind.fromStd(KindStandard.INBOX_RELAYS)).author(author).limit(1u)
+
+            // Construct a target that includes all filters
+            val target = ReqTarget.auto(listOf(metadataFilter, contactFilter, msgRelayFilter))
+            val opts = SubscribeAutoCloseOptions().exitPolicy(ReqExitPolicy.ExitOnEose)
+
+            client?.subscribe(target = target, id = "user-metadata", closeOn = opts)
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to fetch user metadata: ${e.message}", e)
+        }
+    }
+
+    suspend fun getUserMessages(msgRelayList: Event) {
+        try {
+            val author = signer.currentUser ?: throw IllegalStateException("User not signed in")
+            val relays = nip17ExtractRelayList(msgRelayList)
+
+            // Ensure relay connections
+            relays.forEach { relay ->
+                client?.addRelay(relay)
+                client?.connectRelay(relay)
+            }
+
+            // Construct a filter for gift wrap events
+            val filter = Filter().kind(Kind.fromStd(KindStandard.GIFT_WRAP)).pubkey(author)
+            val target = mutableMapOf<RelayUrl, List<Filter>>()
+            relays.forEach { relay ->
+                target[relay] = listOf(filter)
+            }
+
+            client?.subscribe(
+                target = ReqTarget.manual(target),
+                id = "all-gift-wraps"
+            )
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to fetch user messages: ${e.message}", e)
+        }
+    }
+
+    suspend fun handleNotifications(
+        onMetadataUpdate: (PublicKey, Metadata) -> Unit,
+        onContactListUpdate: (List<PublicKey>) -> Unit,
+        onNewMessage: (UnsignedEvent) -> Unit,
+        onSubscriptionClose: () -> Unit,
+    ) = supervisorScope {
+        val now = Timestamp.now()
+        val processedEvent = mutableSetOf<EventId>()
+        val notifications = client?.notifications() ?: return@supervisorScope
+
+        var eoseTrackerJob: Job? = null
+
+        while (true) {
+            val notification = notifications.next() ?: continue
+
+            when (notification) {
+                is ClientNotification.Message -> {
+                    val relayUrl = notification.relayUrl
+
+                    when (val message = notification.message.asEnum()) {
+                        is RelayMessageEnum.EventMsg -> {
+                            val event = message.event
+
+                            // Prevent processing duplicate events
+                            if (processedEvent.contains(event.id())) continue
+                            processedEvent.add(event.id())
+
+                            if (event.kind().asStd()?.equals(KindStandard.METADATA) == true) {
+                                try {
+                                    val metadata = Metadata.fromJson(event.content())
+                                    onMetadataUpdate(event.author(), metadata)
+                                } catch (e: Exception) {
+                                    println("Failed to parse metadata: $e")
+                                }
+                            }
+
+                            if (event.kind().asStd()?.equals(KindStandard.CONTACT_LIST) == true) {
+                                if (isSignedByUser(event = event)) {
+                                    onContactListUpdate(event.tags().publicKeys())
+                                }
+                            }
+
+                            if (event.kind().asStd()?.equals(KindStandard.INBOX_RELAYS) == true) {
+                                // Get all gift wrap events for the current user
+                                if (isSignedByUser(event = event)) {
+                                    getUserMessages(msgRelayList = event)
+                                }
+                            }
+
+                            if (event.kind().asStd()?.equals(KindStandard.GIFT_WRAP) == true) {
+                                try {
+                                    val rumor = extractRumor(event)
+
+                                    // Logic to notify UI after processing
+                                    // Cancel previous tracker if it exists
+                                    eoseTrackerJob?.cancel()
+                                    // Start a new tracker
+                                    eoseTrackerJob = launch {
+                                        delay(10000) // Wait for 10 seconds
+                                        onSubscriptionClose()
+                                    }
+
+                                    // Handle new message
+                                    rumor?.createdAt()?.asSecs()?.let {
+                                        if (it >= now.asSecs()) {
+                                            onNewMessage(rumor)
+                                        }
+                                    }
+                                } catch (e: Exception) {
+                                    println("Failed to extract rumor: $e")
+                                }
+                            }
+                        }
+
+                        is RelayMessageEnum.EndOfStoredEvents -> {
+                            val subscriptionId = message.subscriptionId
+
+                            if (subscriptionId == "all-gift-wraps" || subscriptionId == "newest-gift-wraps") {
+                                onSubscriptionClose()
+                            }
+                        }
+
+                        is RelayMessageEnum.Ok -> {
+                            if (sentEvents.containsKey(message.eventId)) {
+                                val currentRelays = sentEvents[message.eventId] ?: emptyList()
+                                sentEvents[message.eventId] = currentRelays + relayUrl
+                            }
+                        }
+
+                        else -> {
+                            /* Ignore other message types */
+                        }
+                    }
+                }
+
+                is ClientNotification.Shutdown -> {
+                    break
+                }
+
+                else -> {
+                    /* Ignore other message types */
+                }
+            }
+        }
+    }
+
+    private suspend fun getCachedRumor(giftId: EventId): UnsignedEvent? {
+        try {
+            val filter = Filter().identifier(giftId.toHex())
+            val event = client?.database()?.query(filter)?.first()
+
+            return event?.content()?.let { UnsignedEvent.fromJson(it) }
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to get cached rumor: ${e.message}", e)
+        }
+    }
+
+    private suspend fun setCachedRumor(giftId: EventId, rumor: UnsignedEvent) {
+        try {
+            val currentUser =
+                signer.currentUser ?: throw IllegalStateException("User not signed in")
+
+            // Ensure the rumor ID is set
+            val rumor = rumor.ensureId()
+            val roomId = rumor.roomId()
+
+            // Construct reference tags
+            val tags = listOf(
+                Tag.identifier(giftId.toHex()),
+                Tag.event(rumor.id()!!),
+                Tag.reference(roomId.toString()),
+                Tag.custom(TagKind.Unknown("k"), listOf("dm"))
+            )
+
+            // Set event kind
+            val kind = Kind.fromStd(KindStandard.APPLICATION_SPECIFIC_DATA);
+
+            val event = EventBuilder(kind, rumor.asJson())
+                .tags(tags)
+                .build(currentUser)
+                .signWithKeys(Keys.generate())
+
+            client?.database()?.saveEvent(event)
+        } catch (e: Exception) {
+            println("Failed to set cached rumor: ${e.message}")
+        }
+    }
+
+    private suspend fun extractRumor(event: Event): UnsignedEvent? {
+        // Check if the rumor is already cached
+        val cachedRumor = getCachedRumor(event.id())
+        if (cachedRumor != null) return cachedRumor
+
+        // Get all signers
+        val signers = listOfNotNull(signer, deviceSigner)
+        if (signers.isEmpty()) return null
+
+        // Try to unwrap the gift with each signer
+        for (signer in signers) {
+            try {
+                // TODO: custom unwrapping logic
+                val gift = UnwrappedGift.fromGiftWrapAsync(signer = signer, giftWrap = event)
+                val rumor = gift.rumor()
+                // Save the rumor to the database
+                setCachedRumor(event.id(), rumor)
+                // Return the rumor
+                return rumor
+            } catch (e: Exception) {
+                println("Failed to unwrap gift: ${e.message}")
+                continue
+            }
+        }
+
+        return null
+    }
+
+    private suspend fun getDefaultRelayList(): Map<RelayUrl, RelayMetadata> {
+        // Construct a list of relays
+        val relayList = mapOf<RelayUrl, RelayMetadata>(
+            RelayUrl.parse("wss://relay.damus.io") to RelayMetadata.READ,
+            RelayUrl.parse("wss://relay.primal.net") to RelayMetadata.READ,
+            RelayUrl.parse("wss://relay.nostr.net") to RelayMetadata.WRITE,
+            RelayUrl.parse("wss://nostr.superfriends.online") to RelayMetadata.WRITE
+        )
+
+        // Ensure all relays are added and connected
+        relayList.forEach { (relay, metadata) ->
+            client?.addRelay(
+                url = relay,
+                capabilities =
+                    if (metadata == RelayMetadata.READ) RelayCapabilities.read()
+                    else if (metadata == RelayMetadata.WRITE) RelayCapabilities.write()
+                    else RelayCapabilities.none()
+            )
+            client?.connectRelay(relay)
+        }
+
+        return relayList
+    }
+
+    suspend fun getDefaultMsgRelayList(): List<RelayUrl> {
+        // Construct a list of messaging relays
+        val msgRelayList = listOf(
+            RelayUrl.parse("wss://relay.0xchat.com"),
+            RelayUrl.parse("wss://nip17.com"),
+        )
+
+        // Ensure all relays are added and connected
+        msgRelayList.forEach { relay ->
+            client?.addRelay(relay, RelayCapabilities.none())
+            client?.connectRelay(relay)
+        }
+
+        return msgRelayList
+    }
+
+    suspend fun createIdentity(keys: Keys, name: String, bio: String?, picture: String?) {
+        // Send relay list event
+        val relayList = getDefaultRelayList()
+        val relayListEvent = EventBuilder.relayList(relayList).signWithKeys(keys);
+
+        client?.sendEvent(
+            event = relayListEvent,
+            target = SendEventTarget.broadcast(),
+            ackPolicy = AckPolicy.all(),
+            okTimeout = Duration.parse("3s")
+        )
+
+        // Send messaging relay list event
+        val msgRelayList = getDefaultMsgRelayList()
+        val msgRelayListEvent = EventBuilder.nip17RelayList(msgRelayList).signWithKeys(keys)
+
+        client?.sendEvent(
+            event = msgRelayListEvent,
+            target = SendEventTarget.toNip65(),
+            ackPolicy = AckPolicy.none()
+        )
+
+        // Send metadata event
+        val metadata =
+            Metadata.fromRecord(MetadataRecord(displayName = name, about = bio, picture = picture))
+        val metadataEvent = EventBuilder.metadata(metadata).signWithKeys(keys)
+
+        client?.sendEvent(
+            event = metadataEvent,
+            target = SendEventTarget.broadcast(),
+            ackPolicy = AckPolicy.none()
+        )
+
+        // Send contact list event
+        val defaultContact =
+            listOf(Contact(publicKey = PublicKey.parse("npub1j3rz3ndl902lya6ywxvy5c983lxs8mpukqnx4pa4lt5wrykwl5ys7wpw3x")))
+        val contactListEvent = EventBuilder.contactList(defaultContact).signWithKeys(keys)
+
+        client?.sendEvent(
+            event = contactListEvent,
+            target = SendEventTarget.toNip65(),
+            ackPolicy = AckPolicy.none()
+        )
+
+        setSigner(keys)
+    }
+
+    suspend fun getAllCacheMetadata(): Map<PublicKey, Metadata> {
+        try {
+            val filter = Filter().kind(Kind.fromStd(KindStandard.METADATA)).limit(200u)
+            val events = client?.database()?.query(filter)
+            val results = mutableMapOf<PublicKey, Metadata>()
+
+            events?.toVec()?.forEach { event ->
+                val metadata = Metadata.fromJson(event.content())
+                results[event.author()] = metadata
+            }
+
+            return results
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to get cache metadata: ${e.message}", e)
+        }
+    }
+
+    suspend fun fetchMetadataBatch(keys: List<PublicKey>) {
+        try {
+            val limit = keys.size.toULong() * 4u;
+            val opts = SubscribeAutoCloseOptions().exitPolicy(ReqExitPolicy.ExitOnEose)
+
+            // Construct a filter for metadata events
+            val filter = Filter()
+                .kind(Kind.fromStd(KindStandard.METADATA))
+                .authors(keys)
+                .limit(limit)
+
+            // Construct a target that includes all filters
+            val target =
+                ReqTarget.manual(
+                    mapOf(
+                        RelayUrl.parse("wss://purplepag.es") to listOf(filter),
+                        RelayUrl.parse("wss://user.kindpag.es") to listOf(filter),
+                        RelayUrl.parse("wss://relay.primal.net") to listOf(filter),
+                    )
+                )
+
+            client?.subscribe(target = target, closeOn = opts)
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to fetch metadata batch: ${e.message}", e)
+        }
+    }
+
+    suspend fun setMsgRelays(urls: List<RelayUrl>) {
+        try {
+            val event = EventBuilder.nip17RelayList(urls).signAsync(signer)
+
+            client?.sendEvent(
+                event = event,
+                target = SendEventTarget.toNip65(),
+                ackPolicy = AckPolicy.none(),
+            )
+
+            val kind = Kind.fromStd(KindStandard.INBOX_RELAYS);
+            val filter = Filter().kind(kind).author(signer.currentUser!!).limit(1u)
+            val target = ReqTarget.auto(listOf(filter))
+            val opts = SubscribeAutoCloseOptions().exitPolicy(ReqExitPolicy.ExitOnEose)
+
+            client?.subscribe(target = target, closeOn = opts)
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to set msg relays: ${e.message}", e)
+        }
+    }
+
+    suspend fun getMsgRelays(publicKey: PublicKey): List<RelayUrl> {
+        try {
+            val kind = Kind.fromStd(KindStandard.INBOX_RELAYS)
+            val filter = Filter().kind(kind).author(publicKey).limit(1u)
+            val events = client?.database()?.query(filter)
+
+            return nip17ExtractRelayList(events?.toVec()?.firstOrNull() ?: return emptyList())
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to get msg relays: ${e.message}", e)
+        }
+    }
+
+    suspend fun getRelayList(publicKey: PublicKey): Map<RelayUrl, RelayMetadata?> {
+        try {
+            val kind = Kind.fromStd(KindStandard.RELAY_LIST)
+            val filter = Filter().kind(kind).author(publicKey).limit(1u)
+            val events = client?.database()?.query(filter)
+
+            return extractRelayList(events?.toVec()?.firstOrNull() ?: return emptyMap())
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to get relay list: ${e.message}", e)
+        }
+    }
+
+    suspend fun getChatRooms(): Set<Room>? {
+        try {
+            val userPubkey = signer.currentUser ?: throw IllegalStateException("User not signed in")
+            val kind = Kind.fromStd(KindStandard.APPLICATION_SPECIFIC_DATA)
+            val kTag = SingleLetterTag.lowercase(Alphabet.K)
+
+            // Get all events sent by the user
+            val filter = Filter().kind(kind).author(userPubkey).customTag(kTag, "14")
+            val events = client?.database()?.query(filter)
+
+            // Collect rooms
+            val roomsMap: MutableMap<Long, Room> = mutableMapOf()
+
+            events
+                ?.toVec()
+                ?.map { UnsignedEvent.fromJson(it.content()) }
+                ?.filter { it.tags().publicKeys().isNotEmpty() }
+                ?.forEach { event ->
+                    val newRoom = Room.new(rumor = event, userPubkey = userPubkey)
+                    val existingRoom = roomsMap[newRoom.id]
+
+                    // Check if the room already exists
+                    if (existingRoom == null || newRoom.createdAt.asSecs() > existingRoom.createdAt.asSecs()) {
+                        val filter =
+                            Filter().kind(kind).author(userPubkey).pubkeys(newRoom.members.toList())
+
+                        // Determine if it's an ongoing room
+                        val isOngoing = client?.database()?.query(filter)?.isEmpty() == false
+
+                        // Append room to map
+                        roomsMap[newRoom.id] =
+                            if (isOngoing) newRoom.copy(kind = RoomKind.Ongoing) else newRoom
+                    }
+                }
+
+            return roomsMap.values.sortedByDescending { it.createdAt.asSecs() }.toSet()
+        } catch (e: Exception) {
+            println("Failed to get chat rooms: ${e.message}")
+            return null
+        }
+    }
+
+    suspend fun getChatRoomMessages(roomId: Long): List<UnsignedEvent> {
+        try {
+            val kind = Kind.fromStd(KindStandard.APPLICATION_SPECIFIC_DATA)
+            val filter = Filter().kind(kind).reference(roomId.toString())
+            val events = client?.database()?.query(filter)
+
+            // Merge the events
+            return events
+                ?.toVec()
+                ?.map { UnsignedEvent.fromJson(it.content()) }
+                ?.sortedByDescending { it.createdAt().asSecs() } ?: emptyList()
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to get chat room messages: ${e.message}", e)
+        }
+    }
+
+    suspend fun chatRoomConnect(members: List<PublicKey>): Map<PublicKey, List<RelayUrl>> {
+        try {
+            val results = mutableMapOf<PublicKey, MutableList<RelayUrl>>()
+
+            members.forEach { member ->
+                results[member] = mutableListOf<RelayUrl>()
+                val kind = Kind.fromStd(KindStandard.INBOX_RELAYS)
+                val filter = Filter().kind(kind).author(member).limit(1u)
+
+                val stream = client?.streamEvents(
+                    target = ReqTarget.auto(listOf(filter)),
+                    id = "room-${member.toBech32().substring(0, 10)}",
+                    timeout = Duration.parse("3s"),
+                    policy = ReqExitPolicy.ExitOnEose
+                )
+
+                stream?.next()?.let { res ->
+                    if (res.event != null) {
+                        // Connect to the msg relays
+                        connectMsgRelays(res.event!!)
+                        // Mark the member as connected
+                        results[member]?.add(res.relayUrl)
+                    }
+                }
+            }
+
+            return results
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to fetch relays: ${e.message}", e)
+        }
+    }
+
+    suspend fun connectMsgRelays(event: Event) {
+        try {
+            val urls = nip17ExtractRelayList(event);
+            for (url in urls) {
+                if (client?.relay(url) == null) {
+                    client?.addRelay(url)
+                    client?.connectRelay(url)
+                }
+            }
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to connect to relays: ${e.message}", e)
+        }
+    }
+
+    suspend fun sendMessage(
+        to: List<PublicKey>,
+        content: String,
+        subject: String? = null,
+        replies: List<EventId> = emptyList(),
+        onRumorCreated: ((UnsignedEvent) -> Unit)? = null,
+    ) {
+        try {
+            val currentUser =
+                signer.currentUser ?: throw IllegalStateException("User not signed in")
+
+            val tags = mutableListOf<Tag>()
+
+            // Add a subject tag if provided
+            if (subject != null) {
+                tags.add(Tag.custom(TagKind.Subject, listOf(subject)))
+            }
+
+            // Add event tags for replies
+            if (replies.isNotEmpty()) {
+                replies.forEach { replyId ->
+                    tags.add(Tag.event(replyId))
+                }
+            }
+
+            // Add public key tags for each recipient
+            to.forEach { pubkey ->
+                if (pubkey != currentUser) {
+                    tags.add(Tag.publicKey(pubkey))
+                }
+            }
+
+            for (receiver in listOf(currentUser) + to) {
+                // Construct the rumor event
+                // NEVER SIGN this event with the current user signer
+                val rumor = EventBuilder
+                    .privateMsgRumor(receiver = receiver, message = content)
+                    .tags(tags)
+                    .build(currentUser)
+                    // Ensure the event ID is set
+                    .ensureId()
+
+                // Emit the rumor to the chat screen
+                if (receiver == currentUser) {
+                    onRumorCreated?.invoke(rumor)
+                }
+
+                // Construct the gift wrap event
+                val gift = giftWrapAsync(
+                    signer = signer,
+                    receiverPubkey = receiver,
+                    rumor = rumor,
+                    extraTags = listOf(
+                        Tag.custom(TagKind.Unknown("k"), listOf("14"))
+                    )
+                )
+
+                // Send the event to receiver's NIP-17 relays
+                val output = client?.sendEvent(
+                    event = gift,
+                    target = SendEventTarget.toNip17(),
+                    ackPolicy = AckPolicy.none(),
+                    authenticationTimeout = Duration.parse("2s")
+                )
+
+                if (output != null) {
+                    // Keep track of sent events
+                    sentEvents[output.id] = emptyList()
+                    if (rumor.id() != null) rumorMap[rumor.id()!!] = output.id
+
+                    // Collect failed outputs
+                    output.failed.forEach { (relayUrl, reason) ->
+                        println("Failed to send event to relay $relayUrl: $reason")
+                    }
+                }
+            }
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to send message: ${e.message}", e)
+        }
+    }
+
+    suspend fun profileFromAddress(client: HttpClient, address: Nip05Address): Nip05Profile {
+        try {
+            val response: HttpResponse = client.get(address.url())
+            val bodyString: String = response.body()
+
+            return Nip05Profile.fromJson(address, bodyString)
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to fetch profile from address: ${e.message}", e)
+        }
+    }
+
+    suspend fun searchByAddress(query: String): PublicKey {
+        try {
+            val address = Nip05Address.parse(query)
+            val profile = profileFromAddress(HttpClient(), address)
+
+            return profile.publicKey()
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to search address: ${e.message}", e)
+        }
+    }
+
+    suspend fun searchByNostr(query: String): List<PublicKey> {
+        try {
+            // Add search relay
+            val searchRelay = RelayUrl.parse("wss://antiprimal.net")
+            if (client?.relay(searchRelay) == null) {
+                client?.addRelay(url = searchRelay, capabilities = RelayCapabilities.read())
+                client?.connectRelay(searchRelay)
+            }
+
+            val kinds = listOf(Kind.fromStd(KindStandard.METADATA))
+            val filter = Filter().kinds(kinds).search(query).limit(10u)
+            val target =
+                ReqTarget.manual(mapOf(RelayUrl.parse("wss://antiprimal.net") to listOf(filter)))
+
+            val stream = client?.streamEvents(
+                target = target,
+                id = "search",
+                timeout = Duration.parse("4s"),
+                policy = ReqExitPolicy.ExitOnEose
+            )
+
+            // Collect the results
+            val results = mutableListOf<PublicKey>()
+
+            // Keep searching until the stream is closed or timeout
+            stream?.next()?.let { event ->
+                if (event.event != null) {
+                    results.add(event.event!!.author())
+                }
+            }
+
+            return results
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to search nostr: ${e.message}", e)
+        }
+    }
+}

shared/src/commonMain/kotlin/su/reya/coop/NostrViewModel.kt

@@ -0,0 +1,605 @@
+package su.reya.coop
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import io.ktor.client.HttpClient
+import io.ktor.client.plugins.contentnegotiation.ContentNegotiation
+import io.ktor.serialization.kotlinx.json.json
+import kotlinx.coroutines.NonCancellable
+import kotlinx.coroutines.channels.Channel
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.receiveAsFlow
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import kotlinx.coroutines.withTimeoutOrNull
+import kotlinx.serialization.json.Json
+import rust.nostr.sdk.AsyncNostrSigner
+import rust.nostr.sdk.EventBuilder
+import rust.nostr.sdk.EventId
+import rust.nostr.sdk.Keys
+import rust.nostr.sdk.Metadata
+import rust.nostr.sdk.NostrConnect
+import rust.nostr.sdk.NostrConnectUri
+import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.RelayMetadata
+import rust.nostr.sdk.RelayUrl
+import rust.nostr.sdk.Tag
+import rust.nostr.sdk.UnsignedEvent
+import su.reya.coop.blossom.BlossomClient
+import su.reya.coop.storage.SecretStorage
+import kotlin.time.Clock
+import kotlin.time.Duration.Companion.seconds
+
+class NostrViewModel(
+    private val nostr: Nostr,
+    private val secretStore: SecretStorage
+) : ViewModel() {
+    private val _isNotificationBannerDismissed = MutableStateFlow(false)
+    val isNotificationBannerDismissed = _isNotificationBannerDismissed.asStateFlow()
+
+    private val _signerRequired = MutableStateFlow<Boolean?>(null)
+    val signerRequired = _signerRequired.asStateFlow()
+
+    private val _isLoggedIn = MutableStateFlow(false)
+    val isLoggedIn = _isLoggedIn.asStateFlow()
+
+    private val _chatRooms = MutableStateFlow<Set<Room>>(emptySet())
+    val chatRooms = _chatRooms.asStateFlow()
+
+    private val _contactList = MutableStateFlow<Set<PublicKey>>(emptySet())
+    val contactList = _contactList.asStateFlow()
+
+    private val _isPartialProcessedGiftWrap = MutableStateFlow(false)
+    val isPartialProcessedGiftWrap = _isPartialProcessedGiftWrap.asStateFlow()
+
+    private val _isRelayListEmpty = MutableStateFlow(false)
+    val isRelayListEmpty = _isRelayListEmpty.asStateFlow()
+
+    private val _newEvents = MutableSharedFlow<UnsignedEvent>(extraBufferCapacity = 100)
+    val newEvents = _newEvents.asSharedFlow()
+
+    private val _sentReports = MutableSharedFlow<Map<EventId, List<RelayUrl>>>()
+    val sentReport = _sentReports.asSharedFlow()
+
+    private val _errorEvents = Channel<String>(Channel.BUFFERED)
+    val errorEvents = _errorEvents.receiveAsFlow()
+
+    private val _metadataStore = mutableMapOf<PublicKey, MutableStateFlow<Metadata?>>()
+    private val metadataRequestChannel = Channel<PublicKey>(Channel.UNLIMITED)
+    private val seenPublicKeys = mutableSetOf<PublicKey>()
+
+    init {
+        // Check if the notification banner has been dismissed
+        checkNotificationBannerDismissedStatus()
+
+        // Check local stored secret (secret key or bunker)
+        login()
+
+        // Observe the signer state and verify the relay list
+        observeSignerAndCheckRelays()
+
+        // Get all local stored metadata
+        getCacheMetadata()
+
+        // Observe new events from the Nostr client
+        runObserver()
+
+        // Wait and merge metadata requests into a single batch
+        runMetadataBatching()
+    }
+
+    override fun onCleared() {
+        super.onCleared()
+        // Ensure all relays are disconnect
+        viewModelScope.launch {
+            withContext(NonCancellable) {
+                nostr.disconnect()
+            }
+        }
+    }
+
+    private fun showError(message: String) {
+        viewModelScope.launch {
+            _errorEvents.send(message)
+        }
+    }
+
+    private fun checkNotificationBannerDismissedStatus() {
+        viewModelScope.launch {
+            _isNotificationBannerDismissed.value =
+                secretStore.get("notification_banner_dismissed") == "true"
+        }
+    }
+
+    private fun runObserver() {
+        viewModelScope.launch {
+            // Observe new messages
+            launch {
+                nostr.newEvents.collect { event ->
+                    val roomId = event.roomId()
+                    val existingRoom = _chatRooms.value.firstOrNull { it.id == roomId }
+
+                    if (existingRoom == null) {
+                        val currentUser = nostr.signer.currentUser
+                        if (currentUser != null) {
+                            val newRoom = Room.new(event, currentUser)
+                            _chatRooms.update { (it + newRoom).sortedDescending().toSet() }
+                        }
+                    } else {
+                        updateRoomList(roomId, event)
+                    }
+
+                    _newEvents.emit(event)
+                }
+            }
+
+            // Observe metadata updates
+            launch {
+                nostr.metadataUpdates.collect { (pubkey, metadata) ->
+                    updateMetadata(pubkey, metadata)
+                }
+            }
+
+            // Observe contact list updates
+            launch {
+                nostr.contactListUpdates.collect { contacts ->
+                    _contactList.value = contacts.toSet()
+                }
+            }
+
+            // Observes subscription close
+            launch {
+                nostr.subscriptionClosed.collect {
+                    getChatRooms()
+                    _isPartialProcessedGiftWrap.value = true
+                }
+            }
+        }
+    }
+
+    private fun runMetadataBatching() {
+        viewModelScope.launch {
+            // Wait until the client is ready
+            nostr.waitUntilInitialized()
+
+            val batch = mutableSetOf<PublicKey>()
+            val timeout = 500L // 500ms timeout for batching
+
+            while (true) {
+                val firstKey = metadataRequestChannel.receive()
+                batch.add(firstKey)
+                val lastFlushTime = Clock.System.now().toEpochMilliseconds()
+
+                while (batch.isNotEmpty()) {
+                    val nextKey = withTimeoutOrNull(timeout) {
+                        metadataRequestChannel.receive()
+                    }
+
+                    if (nextKey != null) {
+                        batch.add(nextKey)
+                    }
+
+                    val now = Clock.System.now().toEpochMilliseconds()
+                    if (batch.size >= 10 || (now - lastFlushTime) >= timeout || nextKey == null) {
+                        val keysToRequest = batch.toList()
+                        batch.clear()
+
+                        nostr.fetchMetadataBatch(keysToRequest)
+                    }
+                }
+            }
+        }
+    }
+
+    private fun getCacheMetadata() {
+        viewModelScope.launch {
+            // Wait until the client is ready
+            nostr.waitUntilInitialized()
+
+            val results = nostr.getAllCacheMetadata()
+            results.forEach { (pubkey, metadata) ->
+                // Update the metadata state
+                updateMetadata(pubkey, metadata)
+                // Update seenPublicKeys to avoid duplicate requests
+                seenPublicKeys.add(pubkey)
+            }
+        }
+    }
+
+    private fun login() {
+        viewModelScope.launch {
+            try {
+                val secret = secretStore.get("user_signer")
+
+                if (secret == null) {
+                    _signerRequired.value = true
+                    return@launch
+                }
+
+                runCatching {
+                    val signer = createSigner(secret)
+                    nostr.setSigner(signer)
+                }.onSuccess {
+                    _signerRequired.value = false
+                }.onFailure { e ->
+                    showError("Login failed: ${e.message}")
+                    _signerRequired.value = true
+                }
+            } catch (e: Exception) {
+                showError("Login failed: ${e.message}")
+                _signerRequired.value = true
+            }
+        }
+    }
+
+    private fun observeSignerAndCheckRelays() {
+        viewModelScope.launch {
+            while (true) {
+                val pubkey = nostr.signer.currentUser
+
+                if (pubkey != null) {
+                    // Get chat rooms
+                    val rooms = nostr.getChatRooms() ?: emptySet()
+                    if (rooms.isNotEmpty()) {
+                        _chatRooms.value = rooms
+                        _isPartialProcessedGiftWrap.value = true
+                    }
+
+                    // Get all metadata for the current user
+                    nostr.getUserMetadata()
+
+                    // Small delay to ensure all relays are connected
+                    delay(3000)
+
+                    // Check if the relay list is empty
+                    val relays = nostr.getMsgRelays(pubkey)
+                    if (relays.isEmpty()) {
+                        _isRelayListEmpty.value = true
+                    }
+
+                    break
+                }
+
+                delay(500)
+            }
+        }
+    }
+
+    private fun requestMetadata(pubkey: PublicKey) {
+        if (seenPublicKeys.add(pubkey)) {
+            viewModelScope.launch {
+                metadataRequestChannel.send(pubkey)
+            }
+        }
+    }
+
+    private fun updateMetadata(pubkey: PublicKey, metadata: Metadata) {
+        _metadataStore.getOrPut(pubkey) { MutableStateFlow(null) }.value = metadata
+    }
+
+    fun getMetadata(pubkey: PublicKey): StateFlow<Metadata?> {
+        val flow = _metadataStore.getOrPut(pubkey) { MutableStateFlow(null) }
+        if (flow.value == null) {
+            requestMetadata(pubkey)
+        }
+        return flow.asStateFlow()
+    }
+
+    fun currentUser(): PublicKey? {
+        return nostr.signer.currentUser
+    }
+
+    fun logout() {
+        viewModelScope.launch {
+            secretStore.clear("user_signer")
+            nostr.signer.switch(Keys.generate())
+            _signerRequired.value = true
+        }
+    }
+
+    fun dismissNotificationBanner() {
+        viewModelScope.launch {
+            secretStore.set("notification_banner_dismissed", "true")
+            _isNotificationBannerDismissed.value = true
+        }
+    }
+
+    fun dismissRelayWarning() {
+        _isRelayListEmpty.value = false
+    }
+
+    private suspend fun getOrInitAppKeys(): Keys {
+        val secret = secretStore.get("app_keys")
+
+        // If app keys are already stored, use them
+        if (secret != null) {
+            return Keys.parse(secret)
+        }
+
+        // Generate new app keys and save to the secret storage
+        val keys = Keys.generate()
+        secretStore.set("app_keys", keys.secretKey().toBech32())
+
+        return keys
+    }
+
+    private suspend fun createSigner(secret: String): AsyncNostrSigner {
+        return when {
+            secret.startsWith("nsec1") -> Keys.parse(secret)
+            secret.startsWith("bunker://") -> {
+                val appKeys = getOrInitAppKeys()
+                val bunker = NostrConnectUri.parse(secret)
+                val timeout = 50.seconds // or Duration.parse("50s")
+                NostrConnect(uri = bunker, appKeys, timeout, null)
+            }
+
+            else -> throw IllegalArgumentException("Invalid secret format")
+        }
+    }
+
+    suspend fun createIdentity(
+        name: String,
+        bio: String?,
+        picture: ByteArray?,
+        contentType: String? = null
+    ) {
+        _isLoggedIn.value = true
+        try {
+            val keys = Keys.generate()
+            val secret = keys.secretKey().toBech32()
+            var avatarUrl = ""
+
+            // Upload picture to Blossom
+            if (picture != null) {
+                val blossom = BlossomClient(
+                    url = "https://blossom.band",
+                    client = HttpClient {
+                        install(ContentNegotiation) {
+                            json(Json {
+                                ignoreUnknownKeys = true
+                                prettyPrint = true
+                                isLenient = true
+                            })
+                        }
+                    }
+                )
+
+                val descriptor = blossom.upload(
+                    file = picture,
+                    contentType = contentType,
+                    signer = keys
+                )
+
+                avatarUrl = descriptor?.url ?: ""
+            }
+
+            // Create identity
+            nostr.createIdentity(keys = keys, name = name, bio, picture = avatarUrl)
+
+            // Save secret to the secret storage
+            secretStore.set("user_signer", secret)
+
+            // Set an empty secret state
+            _signerRequired.value = false
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+        } finally {
+            _isLoggedIn.value = true
+        }
+    }
+
+    suspend fun verifyIdentity(secret: String): PublicKey? {
+        try {
+            val signer = createSigner(secret)
+            if (secret.startsWith("bunker://")) {
+                showError("Please approve the connection.")
+            }
+            return signer.getPublicKeyAsync()
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+            return null
+        }
+    }
+
+    suspend fun importIdentity(secret: String) {
+        _isLoggedIn.value = true
+        try {
+            val signer = createSigner(secret)
+            nostr.setSigner(signer)
+            secretStore.set("user_signer", secret)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+        } finally {
+            _signerRequired.value = false
+            _isLoggedIn.value = false
+        }
+    }
+
+    suspend fun useDefaultMsgRelayList() {
+        try {
+            val defaultRelays = nostr.getDefaultMsgRelayList()
+            nostr.setMsgRelays(defaultRelays)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+        }
+    }
+
+    suspend fun currentUserRelayList(): Map<RelayUrl, RelayMetadata?> {
+        try {
+            return nostr.getRelayList(nostr.signer.currentUser!!)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+            return emptyMap()
+        }
+    }
+
+    suspend fun currentUserMsgRelayList(): List<RelayUrl> {
+        try {
+            return nostr.getMsgRelays(nostr.signer.currentUser!!)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+            return emptyList()
+        }
+    }
+
+    fun createChatRoom(to: List<PublicKey>): Long {
+        try {
+            if (nostr.signer.currentUser == null) throw IllegalStateException("User not signed in")
+            if (to.isEmpty()) throw IllegalArgumentException("At least one recipient is required")
+
+            val currentUser = nostr.signer.currentUser!!
+
+            // Construct the rumor event
+            val rumor = EventBuilder
+                .privateMsgRumor(to.first(), "")
+                .tags(to.map { Tag.publicKey(it) })
+                .build(currentUser)
+
+            // Check if the room already exists
+            val id = rumor.roomId()
+            val existingRoom = _chatRooms.value.firstOrNull { it.id == id }
+
+            // If the room already exists, return its ID
+            if (existingRoom != null) {
+                return existingRoom.id
+            }
+
+            // Create a room from the rumor event
+            val room = Room.new(rumor, currentUser)
+
+            // Update the chat rooms state
+            _chatRooms.update { currentRooms ->
+                currentRooms + room
+            }
+
+            return room.id
+        } catch (e: Exception) {
+            throw IllegalArgumentException("Failed to create room: ${e.message}")
+        }
+    }
+
+    fun getChatRoom(id: Long): Room {
+        return chatRooms.value.firstOrNull { it.id == id }
+            ?: throw IllegalArgumentException("Room not found")
+    }
+
+    fun getChatRooms() {
+        viewModelScope.launch {
+            val rooms = nostr.getChatRooms() ?: emptySet()
+            _chatRooms.update { currentRooms ->
+                val virtualRooms = currentRooms.filter { local ->
+                    rooms.none { db -> db.id == local.id }
+                }
+                rooms + virtualRooms
+            }
+        }
+    }
+
+    suspend fun refreshChatRooms() {
+        try {
+            _chatRooms.value = nostr.getChatRooms() ?: emptySet()
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+        }
+    }
+
+    suspend fun getChatRoomMessages(roomId: Long): List<UnsignedEvent> {
+        try {
+            return nostr.getChatRoomMessages(roomId)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+        }
+
+        return emptyList()
+    }
+
+    suspend fun chatRoomConnect(roomId: Long): Map<PublicKey, List<RelayUrl>> {
+        val room = getChatRoom(roomId)
+        val members = room.members
+
+        return runCatching {
+            nostr.chatRoomConnect(members.toList())
+        }.getOrElse { e ->
+            showError("Error: ${e.message}")
+            members.associateWith { emptyList<RelayUrl>() }
+        }
+    }
+
+    fun sendMessage(roomId: Long, message: String, replies: List<EventId> = emptyList()) {
+        if (message.isEmpty()) {
+            showError("Message cannot be empty")
+        }
+        viewModelScope.launch {
+            try {
+                val room = getChatRoom(roomId)
+                nostr.sendMessage(
+                    to = room.members.toList(),
+                    content = message,
+                    subject = room.subject,
+                    replies = replies,
+                    onRumorCreated = { event ->
+                        updateRoomList(roomId, event)
+                        viewModelScope.launch { _newEvents.emit(event) }
+                    },
+                )
+            } catch (e: Exception) {
+                showError("Error: ${e.message}")
+            }
+        }
+    }
+
+    fun isMessageSent(id: EventId): Boolean {
+        val giftWrapId = nostr.rumorMap[id]
+
+        if (giftWrapId != null) {
+            val isSent = nostr.sentEvents[giftWrapId]?.isNotEmpty() ?: false
+            return isSent
+        } else {
+            return false
+        }
+    }
+
+    private fun updateRoomList(roomId: Long, newMessage: UnsignedEvent) {
+        _chatRooms.update { currentRooms ->
+            currentRooms.map { room ->
+                if (room.id == roomId) {
+                    room.copy(
+                        lastMessage = newMessage.content(),
+                        createdAt = newMessage.createdAt()
+                    )
+                } else {
+                    room
+                }
+            }.sortedDescending().toSet()
+        }
+    }
+
+    suspend fun searchByAddress(query: String): PublicKey? {
+        try {
+            return nostr.searchByAddress(query)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+        }
+        return null
+    }
+
+    suspend fun searchByNostr(query: String): List<PublicKey> {
+        try {
+            return nostr.searchByNostr(query)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+        }
+        return emptyList()
+    }
+}
+
+fun PublicKey.short(): String {
+    val bech32 = toBech32()
+    return bech32.substring(0, 6) + "..." + bech32.substring(bech32.length - 4)
+}

shared/src/commonMain/kotlin/su/reya/coop/Platform.kt

@@ -1,7 +0,0 @@
-package su.reya.coop
-
-interface Platform {
-    val name: String
-}
-
-expect fun getPlatform(): Platform

shared/src/commonMain/kotlin/su/reya/coop/Room.kt

@@ -0,0 +1,174 @@
+package su.reya.coop
+
+import kotlinx.datetime.DateTimeUnit
+import kotlinx.datetime.TimeZone
+import kotlinx.datetime.minus
+import kotlinx.datetime.number
+import kotlinx.datetime.toLocalDateTime
+import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.TagKind
+import rust.nostr.sdk.Timestamp
+import rust.nostr.sdk.UnsignedEvent
+import kotlin.time.Clock
+import kotlin.time.Instant
+
+enum class RoomKind {
+    Ongoing,
+    Request;
+
+    companion object {
+        fun default(): RoomKind = Request
+    }
+}
+
+data class Room(
+    val id: Long,
+    val createdAt: Timestamp,
+    val subject: String?,
+    val members: Set<PublicKey>,
+    val kind: RoomKind = RoomKind.default(),
+    val lastMessage: String? = null
+) : Comparable<Room> {
+    override fun compareTo(other: Room): Int {
+        return this.createdAt.asSecs().compareTo(other.createdAt.asSecs())
+    }
+
+    companion object {
+        fun new(rumor: UnsignedEvent, userPubkey: PublicKey): Room {
+            val id = rumor.roomId()
+            val createdAt = rumor.createdAt()
+            val subject = rumor.tags().find(TagKind.Subject)?.content()
+
+            // Collect the author's public key and all public keys from tags
+            val pubkeys: MutableSet<PublicKey> = mutableSetOf()
+            pubkeys.add(rumor.author())
+            pubkeys.addAll(rumor.tags().publicKeys())
+
+            // Also remove the user's public key from the list, current user is always a member
+            if (pubkeys.size > 1 && pubkeys.contains(userPubkey)) {
+                pubkeys.remove(userPubkey)
+            }
+
+            // Create a new Room instance
+            return Room(
+                id = id,
+                createdAt = createdAt,
+                subject = subject,
+                members = pubkeys as Set<PublicKey>,
+                lastMessage = rumor.content()
+            )
+        }
+    }
+
+    fun setKind(kind: RoomKind): Room {
+        return this.copy(kind = kind)
+    }
+
+    fun setCreatedAt(createdAt: Timestamp): Room {
+        return this.copy(createdAt = createdAt)
+    }
+
+    fun setSubject(subject: String?): Room {
+        return this.copy(subject = subject)
+    }
+
+    fun setLastMessage(message: String?): Room {
+        return this.copy(lastMessage = message)
+    }
+
+    fun isGroup(): Boolean {
+        return members.size > 1
+    }
+}
+
+fun UnsignedEvent.roomId(): Long {
+    // Collect the author's public key and all public keys from tags
+    val pubkeys: MutableList<PublicKey> = mutableListOf()
+    pubkeys.add(this.author())
+    pubkeys.addAll(this.tags().publicKeys())
+
+    // Sort and hash the list of public keys
+    val sortedUniqueKeys = pubkeys
+        .distinctBy { it.toBech32() }
+        .sortedBy { it.toBech32() }
+
+    return sortedUniqueKeys.hashCode().toLong()
+}
+
+fun Timestamp.ago(): String {
+    val SECONDS_IN_MINUTE = 60L
+    val MINUTES_IN_HOUR = 60L
+    val HOURS_IN_DAY = 24L
+    val DAYS_IN_MONTH = 30L
+
+    val inputInstant = Instant.fromEpochSeconds(this.asSecs().toLong())
+    val now = Clock.System.now()
+    val duration = now - inputInstant
+
+    return when {
+        duration.inWholeSeconds < SECONDS_IN_MINUTE -> "Now"
+        duration.inWholeMinutes < MINUTES_IN_HOUR -> "${duration.inWholeMinutes}m"
+        duration.inWholeHours < HOURS_IN_DAY -> "${duration.inWholeHours}h"
+        duration.inWholeDays < DAYS_IN_MONTH -> "${duration.inWholeDays}d"
+        else -> {
+            val localDateTime = inputInstant.toLocalDateTime(TimeZone.currentSystemDefault())
+            val month =
+                localDateTime.month.name.take(3).lowercase().replaceFirstChar { it.uppercase() }
+            val day = localDateTime.dayOfMonth.toString().padStart(2, '0')
+            "$month $day"
+        }
+    }
+}
+
+fun Timestamp.formatAsGroupHeader(): String {
+    val timeZone = TimeZone.currentSystemDefault()
+    val inputInstant = Instant.fromEpochSeconds(this.asSecs().toLong())
+    val inputDate = inputInstant.toLocalDateTime(timeZone).date
+
+    val now = Clock.System.now()
+    val today = now.toLocalDateTime(timeZone).date
+    val yesterday = today.minus(1, DateTimeUnit.DAY)
+
+    return when (inputDate) {
+        today -> "Today"
+        yesterday -> "Yesterday"
+        else -> {
+            val day = inputDate.day.toString().padStart(2, '0')
+            val month = inputDate.month.number.toString().padStart(2, '0')
+            val year = inputDate.year.toString().takeLast(2)
+            "$day/$month/$year"
+        }
+    }
+}
+
+fun Timestamp.humanReadable(): String {
+    val timeZone = TimeZone.currentSystemDefault()
+    val inputInstant = Instant.fromEpochSeconds(this.asSecs().toLong())
+    val inputDateTime = inputInstant.toLocalDateTime(timeZone)
+    val inputDate = inputDateTime.date
+
+    val now = Clock.System.now()
+    val today = now.toLocalDateTime(timeZone).date
+    val yesterday = today.minus(1, DateTimeUnit.DAY)
+
+    val hour = inputDateTime.hour
+    val minute = inputDateTime.minute.toString().padStart(2, '0')
+    val amPm = if (hour < 12) "AM" else "PM"
+    val hour12 = when {
+        hour == 0 -> 12
+        hour > 12 -> hour - 12
+        else -> hour
+    }
+    val timeFormat = "$hour12:$minute $amPm"
+
+    return when (inputDate) {
+        today -> "Today at $timeFormat"
+        yesterday -> "Yesterday at $timeFormat"
+        else -> {
+            val day = inputDateTime.day.toString().padStart(2, '0')
+            val month = inputDateTime.month.number.toString().padStart(2, '0')
+            val year = inputDateTime.year.toString().takeLast(2)
+            "$day/$month/$year, $timeFormat"
+        }
+    }
+}

shared/src/commonMain/kotlin/su/reya/coop/Signer.kt

@@ -0,0 +1,55 @@
+package su.reya.coop
+
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import rust.nostr.sdk.AsyncNostrSigner
+import rust.nostr.sdk.Event
+import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.UnsignedEvent
+
+class UniversalSigner(initialSigner: AsyncNostrSigner) : AsyncNostrSigner {
+    private val mutex = Mutex()
+    private var signer: AsyncNostrSigner = initialSigner
+
+    var currentUser: PublicKey? = null
+        private set
+
+    /**
+     * Get the current signer.
+     */
+    suspend fun get(): AsyncNostrSigner = mutex.withLock {
+        signer
+    }
+
+    /**
+     * Switch to a new signer.
+     */
+    suspend fun switch(newSigner: AsyncNostrSigner) = mutex.withLock {
+        signer = newSigner
+        currentUser = newSigner.getPublicKeyAsync()
+    }
+
+    override suspend fun getPublicKeyAsync(): PublicKey? {
+        return get().getPublicKeyAsync()
+    }
+
+    override suspend fun signEventAsync(unsignedEvent: UnsignedEvent): Event? {
+        return get().signEventAsync(unsignedEvent)
+    }
+
+    override suspend fun nip04EncryptAsync(publicKey: PublicKey, content: String): String {
+        return get().nip04EncryptAsync(publicKey, content)
+    }
+
+    override suspend fun nip04DecryptAsync(publicKey: PublicKey, encryptedContent: String): String {
+        return get().nip04DecryptAsync(publicKey, encryptedContent)
+    }
+
+    override suspend fun nip44EncryptAsync(publicKey: PublicKey, content: String): String {
+        return get().nip44EncryptAsync(publicKey, content)
+    }
+
+    override suspend fun nip44DecryptAsync(publicKey: PublicKey, payload: String): String {
+        return get().nip44DecryptAsync(publicKey, payload)
+    }
+}

shared/src/commonMain/kotlin/su/reya/coop/blossom/BlossomClient.kt

@@ -0,0 +1,83 @@
+package su.reya.coop.blossom
+
+import io.ktor.client.HttpClient
+import io.ktor.client.call.body
+import io.ktor.client.request.header
+import io.ktor.client.request.put
+import io.ktor.client.request.setBody
+import io.ktor.http.HeaderValue
+import io.ktor.http.HttpHeaders
+import io.ktor.http.HttpStatusCode
+import io.ktor.utils.io.core.toByteArray
+import okio.ByteString.Companion.toByteString
+import rust.nostr.sdk.AsyncNostrSigner
+import rust.nostr.sdk.EventBuilder
+import rust.nostr.sdk.Timestamp
+import kotlin.io.encoding.Base64
+import kotlin.time.Duration
+
+class BlossomClient(
+    val url: String,
+    val client: HttpClient,
+) {
+    suspend fun upload(
+        file: ByteArray,
+        contentType: String? = null,
+        signer: AsyncNostrSigner? = null
+    ): BlobDescriptor? {
+        val url = "$url/upload"
+        val hash = file.toByteString().sha256().hex()
+        val fileHashes = listOf(hash)
+
+        val res = client.put(url) {
+            // Set body
+            setBody(file)
+
+            // Set the content type if provided
+            contentType?.let {
+                header(HttpHeaders.ContentType, it)
+            }
+
+            signer?.let {
+                val defaultAuth = defaultAuth(
+                    action = BlossomAuthorizationVerb.Upload,
+                    defaultContent = "Blossom upload authorization",
+                    defaultScope = BlossomAuthorizationScope.BlobSha256Hashes(fileHashes)
+                )
+                val authHeader = buildAuthHeader(it, defaultAuth)
+                header(HttpHeaders.Authorization, authHeader.value)
+            }
+        }
+
+        return when (res.status) {
+            HttpStatusCode.OK -> res.body<BlobDescriptor>()
+            else -> {
+                throw Exception("Failed to upload file: ${res.status}")
+            }
+        }
+    }
+
+    fun defaultAuth(
+        action: BlossomAuthorizationVerb,
+        defaultContent: String,
+        defaultScope: BlossomAuthorizationScope
+    ): BlossomAuthorization {
+        val expiration = Timestamp.now().addDuration(Duration.parse("300s"))
+        return BlossomAuthorization(
+            content = defaultContent,
+            expiration = expiration,
+            action = action,
+            scope = defaultScope
+        )
+    }
+
+    suspend fun buildAuthHeader(
+        signer: AsyncNostrSigner,
+        authz: BlossomAuthorization
+    ): HeaderValue {
+        val authEvent = EventBuilder.blossomAuth(authz).signAsync(signer)
+        val encodedAuth = Base64.encode(authEvent.asJson().toByteArray())
+        val value = "Nostr $encodedAuth"
+        return HeaderValue(value)
+    }
+}