move msg relay sheet to home screen

Reviewed-on: #18

composeApp/build.gradle.kts

@@ -19,12 +19,14 @@ kotlin {
         androidMain.dependencies {
             implementation(libs.compose.uiToolingPreview)
             implementation(libs.androidx.activity.compose)
-            implementation(libs.androidx.navigation.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:0.2.6")
             implementation("io.coil-kt.coil3:coil-compose:3.4.0")
             implementation("io.coil-kt.coil3:coil-network-okhttp:3.4.0")
-            implementation("su.reya:nostr-sdk-kmp:0.2.3")
             implementation("io.github.kalinjul.easyqrscan:scanner:0.7.0")
             implementation("io.github.alexzhirkevich:qrose:1.1.2")
         }
@@ -67,7 +69,7 @@ android {
         minSdk = libs.versions.android.minSdk.get().toInt()
         targetSdk = libs.versions.android.targetSdk.get().toInt()
         versionCode = 1
-        versionName = "0.1.3"
+        versionName = "0.1.8"
     }
     packaging {
         resources {

composeApp/src/androidMain/AndroidManifest.xml

@@ -11,6 +11,14 @@
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_DATA_SYNC" />
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
 
+    <queries>
+        <intent>
+            <action android:name="android.intent.action.VIEW" />
+            <category android:name="android.intent.category.BROWSABLE" />
+            <data android:scheme="nostrsigner" />
+        </intent>
+    </queries>
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
@@ -19,6 +27,12 @@
         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"

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/kotlin/su/reya/coop/AndroidExternalSigner.kt

@@ -0,0 +1,147 @@
+package su.reya.coop
+
+import android.app.Activity
+import android.content.Context
+import android.content.Intent
+import androidx.core.net.toUri
+import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.UnsignedEvent
+
+class AndroidExternalSigner(
+    private val context: Context,
+    private val launcher: ExternalSignerLauncher,
+) : ExternalSignerHandler {
+    private var cachedPackageName: String? = null
+
+    private data class ContentResolverResult(
+        val result: String,
+        val event: String? = null,
+    )
+
+    private fun queryContentResolver(
+        type: String,
+        payload: String,
+        pubkey: PublicKey? = null,
+        currentUser: PublicKey? = null,
+    ): ContentResolverResult? {
+        val uri = "content://$cachedPackageName.${type.uppercase()}".toUri()
+        val projection = mutableListOf<String?>().apply {
+            add(payload)
+            add(pubkey?.toHex() ?: "")
+            add(currentUser?.toHex() ?: "")
+        }
+
+        val cursor = context.contentResolver.query(
+            uri,
+            projection.toTypedArray(),
+            null, null, null,
+        ) ?: return null
+
+        return cursor.use {
+            if (it.getColumnIndex("rejected") > -1) return null
+            if (it.moveToFirst()) {
+                val resultIndex = it.getColumnIndex("result")
+                val result = if (resultIndex > -1) it.getString(resultIndex) else null
+
+                val eventIndex = it.getColumnIndex("event")
+                val event = if (eventIndex > -1) it.getString(eventIndex) else null
+
+                ContentResolverResult(result = result!!, event = event)
+            } else null
+        }
+    }
+
+    private suspend fun request(
+        type: String,
+        payload: String,
+        pubkey: PublicKey? = null,
+        currentUser: PublicKey? = null,
+        resultKey: String = "result",
+        extras: Map<String, String> = emptyMap(),
+    ): String? {
+        // Try Content Resolver first
+        queryContentResolver(type, payload, pubkey, currentUser)?.let {
+            return it.result
+        }
+
+        // Fall back to Intent
+        val intent = Intent(Intent.ACTION_VIEW, "nostrsigner:$payload".toUri()).apply {
+            `package` = cachedPackageName
+            putExtra("type", type)
+            if (pubkey != null) putExtra("pubkey", pubkey.toHex())
+            if (currentUser != null) putExtra("current_user", currentUser.toHex())
+            extras.forEach { (k, v) -> putExtra(k, v) }
+        }
+
+        val result = launcher.launch(intent)
+        if (result.resultCode != Activity.RESULT_OK) return null
+
+        val data = result.data ?: return null
+        if (data.getBooleanExtra("rejected", false)) return null
+
+        return data.getStringExtra(resultKey)
+    }
+
+    override fun isAvailable(): Boolean {
+        val intent = Intent(Intent.ACTION_VIEW, "nostrsigner:".toUri())
+        return context.packageManager.queryIntentActivities(intent, 0).isNotEmpty()
+    }
+
+    override fun setPackageName(packageName: String) {
+        cachedPackageName = packageName
+    }
+
+    override suspend fun getPublicKey(permissions: String?): ExternalSignerResult? {
+        val intent = Intent(Intent.ACTION_VIEW, "nostrsigner:".toUri()).apply {
+            putExtra("type", "get_public_key")
+            if (permissions != null) putExtra("permissions", permissions)
+        }
+
+        val result = launcher.launch(intent)
+        if (result.resultCode != Activity.RESULT_OK) return null
+
+        val data = result.data ?: return null
+        if (data.getBooleanExtra("rejected", false)) return null
+
+        val pubkey = data.getStringExtra("result") ?: return null
+        val packageName = data.getStringExtra("package") ?: return null
+        cachedPackageName = packageName
+
+        return ExternalSignerResult(PublicKey.parse(pubkey), packageName)
+    }
+
+    override suspend fun signEvent(event: UnsignedEvent, currentUser: PublicKey): String? {
+        val extras = event.id()?.let { mapOf("id" to it.toHex()) } ?: emptyMap()
+        return request(
+            type = "sign_event",
+            payload = event.asJson(),
+            currentUser = currentUser,
+            resultKey = "event",
+            extras = extras,
+        )
+    }
+
+    override suspend fun nip04Encrypt(plaintext: String, pubkey: PublicKey): String? {
+        return request("nip04_encrypt", plaintext, pubkey)
+    }
+
+    override suspend fun nip04Decrypt(ciphertext: String, pubkey: PublicKey): String? {
+        return request("nip04_decrypt", ciphertext, pubkey)
+    }
+
+    override suspend fun nip44Encrypt(
+        plaintext: String,
+        pubkey: PublicKey,
+        currentUser: PublicKey
+    ): String? {
+        return request("nip44_encrypt", plaintext, pubkey, currentUser)
+    }
+
+    override suspend fun nip44Decrypt(
+        ciphertext: String,
+        pubkey: PublicKey,
+        currentUser: PublicKey
+    ): String? {
+        return request("nip44_decrypt", ciphertext, pubkey, currentUser)
+    }
+}

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

@@ -1,23 +1,16 @@
 package su.reya.coop
 
+import android.app.Activity
+import android.content.Intent
+import android.os.Build
+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.Spacer
-import androidx.compose.foundation.layout.fillMaxHeight
-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.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.material3.Typography
 import androidx.compose.material3.darkColorScheme
 import androidx.compose.material3.dynamicDarkColorScheme
@@ -27,25 +20,22 @@ 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.platform.LocalContext
-import androidx.compose.ui.text.font.FontStyle
+import androidx.core.util.Consumer
-import androidx.compose.ui.text.font.FontWeight
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
-import androidx.compose.ui.text.style.TextAlign
+import androidx.lifecycle.viewmodel.navigation3.rememberViewModelStoreNavEntryDecorator
-import androidx.compose.ui.unit.dp
+import androidx.navigation3.runtime.NavBackStack
-import androidx.navigation.NavController
+import androidx.navigation3.runtime.NavKey
-import androidx.navigation.compose.NavHost
+import androidx.navigation3.runtime.entryProvider
-import androidx.navigation.compose.composable
+import androidx.navigation3.runtime.rememberNavBackStack
-import androidx.navigation.compose.rememberNavController
+import androidx.navigation3.runtime.rememberSaveableStateHolderNavEntryDecorator
-import androidx.navigation.navDeepLink
+import androidx.navigation3.ui.NavDisplay
-import androidx.navigation.toRoute
-import kotlinx.coroutines.launch
 import su.reya.coop.screens.ChatScreen
 import su.reya.coop.screens.HomeScreen
 import su.reya.coop.screens.ImportScreen
@@ -56,6 +46,7 @@ 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 su.reya.coop.screens.UpdateProfileScreen
 
 val LocalNostrViewModel = staticCompositionLocalOf<NostrViewModel> {
     error("No NostrViewModel provided")
@@ -65,26 +56,40 @@ val LocalSnackbarHostState = staticCompositionLocalOf<SnackbarHostState> {
     error("No SnackbarHostState provided")
 }
 
-val LocalNavController = staticCompositionLocalOf<NavController> {
+val LocalNavigator = staticCompositionLocalOf<Navigator> {
-    error("No NavController provided")
+    error("No Navigator provided")
+}
+
+val LocalScanResult = staticCompositionLocalOf<QrScanResult> {
+    error("No QrScanResult provided")
 }
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
 @Composable
 fun App(viewModel: NostrViewModel) {
     val context = LocalContext.current
-    val navController = rememberNavController()
+    val activity = context as? ComponentActivity
     val scope = rememberCoroutineScope()
-    val darkMode = isSystemInDarkTheme()
+    val sheetState = rememberModalBottomSheetState()
+    val backStack = rememberNavBackStack(Screen.Home)
+    val navigator = remember(backStack) { Navigator(backStack) }
+    val qrScanResult = remember { QrScanResult() }
+
+    val signerRequired by viewModel.signerRequired.collectAsStateWithLifecycle()
 
     // 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 -> {
+        Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
-            if (darkMode) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
+            if (isSystemInDarkTheme()) dynamicDarkColorScheme(context) else dynamicLightColorScheme(
+                context
+            )
         }
         // When dark mode is enabled, use the dark color scheme
         darkMode -> darkColorScheme()
@@ -92,12 +97,48 @@ fun App(viewModel: NostrViewModel) {
         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(),
@@ -106,164 +147,78 @@ fun App(viewModel: NostrViewModel) {
         CompositionLocalProvider(
             LocalNostrViewModel provides viewModel,
             LocalSnackbarHostState provides snackbarHostState,
-            LocalNavController provides navController,
+            LocalNavigator provides navigator,
+            LocalScanResult provides qrScanResult,
         ) {
-            val signerRequired by viewModel.signerRequired.collectAsState(initial = null)
+            NavDisplay(
-            val isRelayListEmpty by viewModel.isRelayListEmpty.collectAsState()
+                backStack = backStack,
-            val sheetState = rememberModalBottomSheetState()
+                onBack = {
-
+                    if (backStack.size > 1) {
-            LaunchedEffect(signerRequired) {
+                        backStack.removeLastOrNull()
-                // Navigate to the home screen if the secret is already set
+                    } else {
-                if (signerRequired == false) {
+                        (context as? Activity)?.finish()
-                    navController.navigate(Screen.Home) {
+                    }
-                        popUpTo(Screen.Onboarding) { inclusive = true }
+                },
+                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.UpdateProfile> {
+                        UpdateProfileScreen()
+                    }
+                    entry<Screen.Scan> {
+                        ScanScreen()
+                    }
+                    entry<Screen.MyQr> {
+                        MyQrScreen()
+                    }
+                    entry<Screen.Relay> {
+                        RelayScreen()
                     }
                 }
-            }
+            )
-
-            // Keep the splash screen visible until the secret check is complete
-            if (signerRequired == null) {
-                return@CompositionLocalProvider
-            }
-
-            NavHost(
-                navController = navController,
-                startDestination = if (signerRequired!!) Screen.Onboarding else Screen.Home
-            ) {
-                composable<Screen.Onboarding> { backStackEntry ->
-                    OnboardingScreen(
-                        onOpenImport = { navController.navigate(Screen.Import) },
-                        onOpenNew = { navController.navigate(Screen.NewIdentity) }
-                    )
-                }
-                composable<Screen.Import> { backStackEntry ->
-                    val isCreating by viewModel.isCreating.collectAsState()
-
-                    ImportScreen(
-                        isLoading = isCreating,
-                        onBack = { navController.popBackStack() },
-                        onSave = { secret ->
-                            viewModel.importIdentity(secret)
-                        }
-                    )
-                }
-                composable<Screen.NewIdentity> { backStackEntry ->
-                    val isCreating by viewModel.isCreating.collectAsState()
-
-                    NewIdentityScreen(
-                        isLoading = isCreating,
-                        onBack = { navController.popBackStack() },
-                        onSave = { name, bio, uri ->
-                            val contentType = uri?.let { context.contentResolver.getType(it) }
-                            val picture = uri?.let {
-                                context.contentResolver.openInputStream(it)?.use { input ->
-                                    input.readBytes()
-                                }
-                            }
-                            viewModel.createIdentity(name, bio, picture, contentType)
-                        }
-                    )
-                }
-                composable<Screen.Home> { backStackEntry ->
-                    HomeScreen(
-                        onOpenChat = { id -> navController.navigate(Screen.Chat(id)) },
-                        onNewChat = { navController.navigate(Screen.NewChat) }
-                    )
-                }
-                composable<Screen.Chat>(
-                    deepLinks = listOf(
-                        navDeepLink<Screen.Chat>(basePath = "coop://chat")
-                    )
-                ) { backStackEntry ->
-                    val chat: Screen.Chat = backStackEntry.toRoute()
-                    ChatScreen(
-                        id = chat.id,
-                        onBack = { navController.popBackStack() },
-                    )
-                }
-                composable<Screen.Profile> { backStackEntry ->
-                    val profile: Screen.Profile = backStackEntry.toRoute()
-                    ProfileScreen(
-                        pubkey = profile.pubkey,
-                        onBack = { navController.popBackStack() },
-                    )
-                }
-                composable<Screen.NewChat> { backStackEntry ->
-                    NewChatScreen(
-                        onBack = { navController.popBackStack() },
-                    )
-                }
-                composable<Screen.Scan> { backStackEntry ->
-                    ScanScreen(
-                        onBack = { navController.popBackStack() },
-                    )
-                }
-                composable<Screen.MyQr> { backStackEntry ->
-                    MyQrScreen(
-                        onBack = { navController.popBackStack() },
-                    )
-                }
-                composable<Screen.Relay> { backStackEntry ->
-                    RelayScreen(
-                        onBack = { navController.popBackStack() },
-                    )
-                }
-            }
-
-            // 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
-                            .fillMaxWidth()
-                            .fillMaxHeight(0.5f)
-                            .padding(24.dp),
-                        horizontalAlignment = Alignment.CenterHorizontally,
-                    ) {
-                        Text(
-                            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()
-                                }
-                            },
-                            modifier = Modifier
-                                .fillMaxWidth()
-                                .height(ButtonDefaults.MediumContainerHeight),
-                        ) {
-                            Text(
-                                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/ExternalSignerLauncher.kt

@@ -0,0 +1,28 @@
+package su.reya.coop
+
+import android.content.Intent
+import androidx.activity.result.ActivityResult
+import androidx.activity.result.ActivityResultLauncher
+import kotlinx.coroutines.CompletableDeferred
+
+class ExternalSignerLauncher {
+    private var launcher: ActivityResultLauncher<Intent>? = null
+    private var pendingResult: CompletableDeferred<ActivityResult>? = null
+
+    fun register(launcher: ActivityResultLauncher<Intent>) {
+        this.launcher = launcher
+    }
+
+    suspend fun launch(intent: Intent): ActivityResult {
+        val deferred = CompletableDeferred<ActivityResult>()
+        pendingResult = deferred
+        launcher?.launch(intent)
+            ?: throw IllegalStateException("ExternalSignerLauncher not registered")
+        return deferred.await()
+    }
+
+    fun onResult(result: ActivityResult) {
+        pendingResult?.complete(result)
+        pendingResult = null
+    }
+}

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

@@ -1,46 +1,79 @@
 package su.reya.coop
 
 import android.content.Intent
-import android.os.Build
 import android.os.Bundle
+import android.os.Process
+import android.util.Log
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.activity.viewModels
 import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
+import androidx.lifecycle.ProcessLifecycleOwner
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.ViewModelProvider
 import su.reya.coop.coop.storage.SecretStore
+import kotlin.system.exitProcess
 
 class MainActivity : ComponentActivity() {
+    companion object {
+        val externalSignerLauncher = ExternalSignerLauncher()
+    }
+
     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
+                val androidSigner = AndroidExternalSigner(this@MainActivity, externalSignerLauncher)
+                return NostrViewModel(NostrManager.instance, secretStore, androidSigner) as T
             }
         }
     }
 
     override fun onCreate(savedInstanceState: Bundle?) {
+        Thread.setDefaultUncaughtExceptionHandler { thread, throwable ->
+            throwable.printStackTrace()
+
+            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
+            Process.killProcess(Process.myPid())
+            exitProcess(1)
+        }
+
+        val resultLauncher = registerForActivityResult(
+            ActivityResultContracts.StartActivityForResult()
+        ) { result ->
+            externalSignerLauncher.onResult(result)
+        }
+        externalSignerLauncher.register(resultLauncher)
+
         val splashScreen = installSplashScreen()
         enableEdgeToEdge()
 
         super.onCreate(savedInstanceState)
 
         val serviceIntent = Intent(this, NostrForegroundService::class.java)
-
+        startForegroundService(serviceIntent)
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            startForegroundService(serviceIntent)
-        } else {
-            startService(serviceIntent)
-        }
 
         // Keep the splash screen visible until the signer check is complete
         splashScreen.setKeepOnScreenCondition {
             viewModel.signerRequired.value == null
         }
 
+        // Bind the lifecycle of the ViewModel to the Activity's lifecycle'
+        viewModel.bindLifecycle(ProcessLifecycleOwner.get().lifecycle)
+
         setContent {
             App(viewModel = viewModel)
         }

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

@@ -1,8 +1,25 @@
 package su.reya.coop
 
+import android.content.Intent
+import androidx.navigation3.runtime.NavKey
 import kotlinx.serialization.Serializable
 
-sealed interface Screen {
+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
 
@@ -12,6 +29,9 @@ sealed interface Screen {
     @Serializable
     data class Profile(val pubkey: String) : Screen
 
+    @Serializable
+    data object UpdateProfile : Screen
+
     @Serializable
     data object NewChat : Screen
 

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

@@ -6,15 +6,17 @@ 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 androidx.annotation.RequiresApi
+import android.util.Log
 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.Job
 import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.cancel
 import kotlinx.coroutines.launch
@@ -22,7 +24,8 @@ import java.io.File
 
 class NostrForegroundService : Service() {
     private val serviceScope = CoroutineScope(Dispatchers.IO + SupervisorJob())
-    private val nostr = NostrManager.instance
+    private val nostr by lazy { NostrManager.instance }
+    private var notificationJob: Job? = null
 
     override fun onBind(intent: Intent?): IBinder? = null
 
@@ -30,19 +33,36 @@ class NostrForegroundService : Service() {
         return ProcessLifecycleOwner.get().lifecycle.currentState.isAtLeast(Lifecycle.State.STARTED)
     }
 
-    @RequiresApi(Build.VERSION_CODES.O)
+    override fun onCreate() {
-    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        super.onCreate()
+
         createNotificationChannel()
-
         val notification = createNotification()
-        startForeground(1, notification)
 
-        serviceScope.launch {
+        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 {
+        if (notificationJob?.isActive == true) return START_STICKY
+
+        notificationJob = 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)
+                try {
+                    nostr.init(dbDir.absolutePath)
+                } catch (e: Exception) {
+                    throw IllegalStateException("Failed to initialize Nostr Client", e)
+                }
                 // Connect to bootstrap relays
                 nostr.connectBootstrapRelays()
                 // Handle notifications
@@ -66,19 +86,18 @@ class NostrForegroundService : Service() {
                     }
                 )
             } catch (e: Exception) {
-                println("Failed to start Nostr in background: ${e.message}")
+                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_silent",
+            "nostr_service",
             "Nostr Background Status",
             NotificationManager.IMPORTANCE_MIN
         ).apply {
@@ -127,7 +146,7 @@ class NostrForegroundService : Service() {
             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")

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

@@ -1,6 +1,7 @@
 package su.reya.coop.screens
 
 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.IntrinsicSize
@@ -38,6 +39,7 @@ import androidx.compose.material3.TopAppBarDefaults
 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.mutableIntStateOf
 import androidx.compose.runtime.mutableStateListOf
@@ -47,14 +49,15 @@ 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.text.font.FontWeight
 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_send
-import kotlinx.coroutines.flow.first
 import org.jetbrains.compose.resources.painterResource
 import rust.nostr.sdk.UnsignedEvent
-import su.reya.coop.LocalNavController
+import su.reya.coop.LocalNavigator
 import su.reya.coop.LocalNostrViewModel
 import su.reya.coop.LocalSnackbarHostState
 import su.reya.coop.Screen
@@ -63,39 +66,42 @@ 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(
+fun ChatScreen(id: Long) {
-    id: Long,
-    onBack: () -> Unit,
-) {
     val snackbarHostState = LocalSnackbarHostState.current
-    val navController = LocalNavController.current
+    val navigator = LocalNavigator.current
     val viewModel = LocalNostrViewModel.current
 
-    val listState = rememberLazyListState()
+    // Get chat room by ID
-    val chatRooms by viewModel.chatRooms.collectAsState()
+    val chatRooms by viewModel.chatRooms.collectAsStateWithLifecycle()
-    val room = remember(chatRooms, id) { chatRooms.firstOrNull { it.id == id } }
+    val room by remember(id) { derivedStateOf { chatRooms.firstOrNull { it.id == id } } }
 
+    // Show empty screen
     if (room == null) {
         Box(
             modifier = Modifier.fillMaxSize(),
             contentAlignment = Alignment.Center
         ) {
-            LoadingIndicator()
+            Text(
+                text = "Something went wrong.",
+                style = MaterialTheme.typography.titleMediumEmphasized,
+                color = MaterialTheme.colorScheme.onSurface
+            )
         }
         return
     }
 
-    val displayName by remember(room) { room.displayNameFlow(viewModel) }.collectAsState("Loading...")
+    val displayName by remember(room) { room!!.displayNameFlow(viewModel) }.collectAsState("Loading...")
-    val picture by remember(room) { room.pictureFlow(viewModel) }.collectAsState(null)
+    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 listState = rememberLazyListState()
     val messages = remember { mutableStateListOf<UnsignedEvent>() }
+
     val groupedMessages = remember(messages.toList()) {
         messages.groupBy { it.createdAt().formatAsGroupHeader() }
     }
@@ -104,23 +110,14 @@ fun ChatScreen(
         // Start loading spinner
         loading = true
 
+        // Get msg relays for each member
+        viewModel.chatRoomConnect(id)
+
         // 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
 
@@ -152,8 +149,8 @@ fun ChatScreen(
                     Row(
                         verticalAlignment = Alignment.CenterVertically,
                         modifier = Modifier.clickable {
-                            room.members.firstOrNull()?.let { pubkey ->
+                            room!!.members.firstOrNull()?.let { pubkey ->
-                                navController.navigate(Screen.Profile(pubkey.toBech32()))
+                                navigator.navigate(Screen.Profile(pubkey.toBech32()))
                             }
                         }
                     ) {
@@ -185,7 +182,7 @@ fun ChatScreen(
                             }
                         }
                     ) {
-                        IconButton(onClick = onBack) {
+                        IconButton(onClick = { navigator.goBack() }) {
                             Icon(
                                 painter = painterResource(Res.drawable.ic_arrow_back),
                                 contentDescription = "Back"
@@ -238,10 +235,15 @@ fun ChatScreen(
                                 .fillMaxWidth(),
                             contentAlignment = Alignment.Center
                         ) {
-                            Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                            Column(
+                                horizontalAlignment = Alignment.CenterHorizontally,
+                                verticalArrangement = Arrangement.spacedBy(4.dp),
+                            ) {
                                 Text(
                                     text = "No messages yet",
-                                    style = MaterialTheme.typography.titleLargeEmphasized,
+                                    style = MaterialTheme.typography.titleLargeEmphasized.copy(
+                                        fontWeight = FontWeight.SemiBold
+                                    ),
                                     color = MaterialTheme.colorScheme.onSurface
                                 )
                                 Text(

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

@@ -1,20 +1,31 @@
 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.fillMaxHeight
 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.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
@@ -36,6 +47,7 @@ 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
@@ -61,8 +73,14 @@ 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.FontStyle
 import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
+import androidx.core.app.NotificationManagerCompat
+import androidx.lifecycle.compose.LifecycleResumeEffect
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import coop.composeapp.generated.resources.Res
 import coop.composeapp.generated.resources.ic_new_chat
 import coop.composeapp.generated.resources.ic_qr
@@ -70,8 +88,9 @@ 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.LocalNavController
+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
@@ -83,11 +102,10 @@ import su.reya.coop.short
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
 @Composable
-fun HomeScreen(
+fun HomeScreen() {
-    onOpenChat: (Long) -> Unit,
+    val context = LocalContext.current
-    onNewChat: () -> Unit,
+    val navigator = LocalNavigator.current
-) {
+    val qrScanResult = LocalScanResult.current
-    val navController = LocalNavController.current
     val snackbarHostState = LocalSnackbarHostState.current
     val clipboardManager = LocalClipboard.current
     val viewModel = LocalNostrViewModel.current
@@ -95,45 +113,54 @@ fun HomeScreen(
     val currentUser = viewModel.currentUser() ?: return
     val currentUserProfile = viewModel.getMetadata(currentUser) ?: return
 
-    val userProfile by currentUserProfile.collectAsState(initial = null)
+    val userProfile by currentUserProfile.collectAsStateWithLifecycle()
-    val chatRooms by viewModel.chatRooms.collectAsState(initial = emptyList())
+    val chatRooms by viewModel.chatRooms.collectAsStateWithLifecycle()
+    val isRelayListEmpty by viewModel.isRelayListEmpty.collectAsStateWithLifecycle()
     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) }
 
-    val savedStateHandle = navController.currentBackStackEntry?.savedStateHandle
+    var isNotificationEnabled by remember {
-    val qrResult by savedStateHandle
+        mutableStateOf(NotificationManagerCompat.from(context).areNotificationsEnabled())
-        ?.getStateFlow<String?>("qr_result", null)
-        ?.collectAsState()
-        ?: remember { mutableStateOf(null) }
-
-    LaunchedEffect(Unit) {
-        if (qrResult == null) {
-            viewModel.getChatRooms()
-        }
     }
 
-    LaunchedEffect(qrResult) {
+    val permissionLauncher = rememberLauncherForActivityResult(
-        qrResult?.let { result ->
+        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))
-                        navController.navigate(Screen.Chat(roomId))
+                        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
-            navController.currentBackStackEntry?.savedStateHandle?.remove<String>("qr_result")
+            qrScanResult.clear()
         }
     }
 
@@ -153,7 +180,7 @@ fun HomeScreen(
                 },
                 actions = {
                     // QR Scanner
-                    IconButton(onClick = { navController.navigate(Screen.Scan) }) {
+                    IconButton(onClick = { navigator.navigate(Screen.Scan) }) {
                         Icon(
                             painter = painterResource(Res.drawable.ic_scanner),
                             contentDescription = "Scanner"
@@ -184,7 +211,7 @@ fun HomeScreen(
                 state = rememberTooltipState(),
             ) {
                 ExtendedFloatingActionButton(
-                    onClick = onNewChat,
+                    onClick = { navigator.navigate(Screen.NewChat) },
                     expanded = expandedFab,
                     icon = {
                         Icon(
@@ -197,167 +224,306 @@ fun HomeScreen(
             }
         },
         content = { innerPadding ->
-            Surface(
+            Column(
-                modifier = Modifier
+                modifier = Modifier.padding(top = innerPadding.calculateTopPadding()),
-                    .fillMaxSize()
+                verticalArrangement = Arrangement.spacedBy(16.dp),
-                    .padding(top = innerPadding.calculateTopPadding()),
-                color = MaterialTheme.colorScheme.surface,
-                shape = RoundedCornerShape(topStart = 24.dp, topEnd = 24.dp),
             ) {
-                PullToRefreshBox(
+                if (!isNotificationEnabled && !isBannerDismissed) {
-                    modifier = Modifier.fillMaxSize(),
+                    Surface(
-                    isRefreshing = isRefreshing,
+                        modifier = Modifier
-                    state = pullToRefreshState,
+                            .fillMaxWidth()
-                    onRefresh = {
+                            .padding(horizontal = 16.dp),
-                        scope.launch {
+                        shape = RoundedCornerShape(24.dp),
-                            isRefreshing = true
+                        color = MaterialTheme.colorScheme.secondaryContainer,
-                            viewModel.refreshChatRooms()
+                    ) {
-                            isRefreshing = false
+                        Column(
-                        }
+                            modifier = Modifier
-                    },
+                                .fillMaxWidth()
-                    indicator = {
+                                .padding(16.dp),
-                        PullToRefreshDefaults.LoadingIndicator(
+                            verticalArrangement = Arrangement.spacedBy(16.dp),
-                            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,
+                                modifier = Modifier.fillMaxWidth(),
-                                verticalArrangement = Arrangement.spacedBy(4.dp),
                             ) {
                                 Text(
-                                    text = "No chats yet",
+                                    text = "Get message notifications",
-                                    style = MaterialTheme.typography.titleLargeEmphasized.copy(
+                                    style = MaterialTheme.typography.titleMediumEmphasized,
-                                        fontWeight = FontWeight.SemiBold
+                                    color = MaterialTheme.colorScheme.onSecondaryFixed,
-                                    ),
-                                    color = MaterialTheme.colorScheme.onSurface
                                 )
                                 Text(
-                                    text = "Your conversations will appear here.",
+                                    text = "Make sure you know when you have new messages.",
                                     style = MaterialTheme.typography.bodyMedium,
-                                    color = MaterialTheme.colorScheme.outline
+                                    color = MaterialTheme.colorScheme.onSecondaryContainer,
                                 )
                             }
-                        }
+                            Row(
-                    } else {
+                                horizontalArrangement = Arrangement.spacedBy(8.dp),
-                        LazyColumn(
+                            ) {
-                            state = listState,
+                                TextButton(
-                            modifier = Modifier.fillMaxSize()
+                                    onClick = { viewModel.dismissNotificationBanner() },
-                        ) {
+                                    modifier = Modifier.weight(1f),
-                            items(chatRooms.toList(), key = { it.id }) { room ->
+                                ) {
-                                ChatRoom(
+                                    Text(text = "Maybe later")
-                                    room = room,
+                                }
-                                    onClick = { onOpenChat(room.id) }
+                                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(
-                if (showBottomSheet) {
+                    modifier = Modifier.fillMaxSize(),
-                    ModalBottomSheet(
+                    color = MaterialTheme.colorScheme.surface,
-                        onDismissRequest = { showBottomSheet = false },
+                    shape = RoundedCornerShape(topStart = 24.dp, topEnd = 24.dp),
-                        sheetState = sheetState,
+                ) {
-                    ) {
+                    PullToRefreshBox(
-                        val pubkey = viewModel.currentUser()
+                        modifier = Modifier.fillMaxSize(),
-                        val shortPubkey = pubkey?.short() ?: "Not available"
+                        isRefreshing = isRefreshing,
-
+                        state = pullToRefreshState,
-                        val userName =
+                        onRefresh = {
-                            userProfile?.asRecord()?.displayName
-                                ?: userProfile?.asRecord()?.name
-                                ?: "No name"
-
-                        val dismissAndRun: (suspend () -> Unit) -> Unit = { action ->
                             scope.launch {
-                                sheetState.hide()
+                                isRefreshing = true
-                                showBottomSheet = false
+                                viewModel.refreshChatRooms()
-                                action()
+                                isRefreshing = false
                             }
+                        },
+                        indicator = {
+                            PullToRefreshDefaults.LoadingIndicator(
+                                state = pullToRefreshState,
+                                isRefreshing = isRefreshing,
+                                modifier = Modifier.align(Alignment.TopCenter),
+                            )
                         }
-
+                    ) {
-                        Column(
+                        if (!isPartialProcessedGiftWrap) {
-                            modifier = Modifier
+                            Box(
-                                .padding(16.dp)
+                                modifier = Modifier.fillMaxSize(),
-                                .fillMaxWidth(),
+                                contentAlignment = Alignment.Center
-                        ) {
-                            Column(
-                                modifier = Modifier.fillMaxWidth(),
-                                horizontalAlignment = Alignment.CenterHorizontally,
                             ) {
-                                Box(
+                                LoadingIndicator()
-                                    modifier = Modifier
+                            }
-                                        .size(84.dp)
+                        } else if (chatRooms.isEmpty()) {
-                                        .clip(MaterialShapes.Cookie9Sided.toShape()),
+                            Box(
-                                    contentAlignment = Alignment.Center
+                                modifier = Modifier.fillMaxSize(),
-                                ) {
+                                contentAlignment = Alignment.Center
-                                    Avatar(
+                            ) {
-                                        picture = userProfile?.asRecord()?.picture,
+                                Column(
-                                        description = userProfile?.asRecord()?.displayName,
+                                    horizontalAlignment = Alignment.CenterHorizontally,
-                                        shape = MaterialShapes.Cookie9Sided.toShape(),
+                                    verticalArrangement = Arrangement.spacedBy(4.dp),
-                                        modifier = Modifier.fillMaxSize()
-                                    )
-                                }
-                                Spacer(modifier = Modifier.size(8.dp))
-                                Box(
-                                    contentAlignment = Alignment.Center
                                 ) {
                                     Text(
-                                        text = userName,
+                                        text = "No chats yet",
-                                        style = MaterialTheme.typography.titleLargeEmphasized,
+                                        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
                                     )
                                 }
-                                Spacer(modifier = Modifier.size(8.dp))
+                            }
-                                Row(
+                        } else {
-                                    verticalAlignment = Alignment.CenterVertically,
+                            LazyColumn(
-                                ) {
+                                state = listState,
-                                    OutlinedButton(
+                                modifier = Modifier.fillMaxSize()
-                                        onClick = {
+                            ) {
-                                            scope.launch {
+                                items(chatRooms.toList(), key = { it.id }) { room ->
-                                                pubkey?.let {
+                                    ChatRoom(
-                                                    val bech32 = it.toBech32()
+                                        room = room,
-                                                    val data = ClipData.newPlainText(bech32, bech32)
+                                        onClick = { navigator.navigate(Screen.Chat(room.id)) }
-                                                    clipboardManager.setClipEntry(ClipEntry(data))
+                                    )
-                                                }
-                                            }
-                                        },
-                                    ) {
-                                        Text(text = shortPubkey)
-                                    }
-                                    FilledIconButton(
-                                        onClick = {
-                                            dismissAndRun { navController.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)
+                    }
+
+                    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)
+                            }
                         }
                     }
                 }
             }
         },
     )
+
+    // 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
+                    .fillMaxWidth()
+                    .fillMaxHeight(0.5f)
+                    .padding(24.dp),
+                horizontalAlignment = Alignment.CenterHorizontally,
+            ) {
+                Text(
+                    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))
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.spacedBy(8.dp),
+                ) {
+                    TextButton(
+                        onClick = { },
+                        modifier = Modifier
+                            .weight(1f)
+                            .height(ButtonDefaults.MediumContainerHeight),
+                    ) {
+                        Text(
+                            text = "Retry",
+                            style = MaterialTheme.typography.titleMediumEmphasized,
+                        )
+                    }
+                    Button(
+                        onClick = {
+                            scope.launch {
+                                viewModel.useDefaultMsgRelayList()
+                                sheetState.hide()
+                            }
+                        },
+                        modifier = Modifier
+                            .weight(1f)
+                            .height(ButtonDefaults.MediumContainerHeight),
+                    ) {
+                        Text(
+                            text = "Use Default",
+                            style = MaterialTheme.typography.titleMediumEmphasized,
+                        )
+                    }
+                }
+            }
+        }
+    }
 }
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
@@ -408,13 +574,14 @@ fun ChatRoom(room: Room, onClick: () -> Unit) {
 fun BottomMenuList(
     onDismiss: (suspend () -> Unit) -> Unit
 ) {
-    val navController = LocalNavController.current
+    val navigator = LocalNavigator.current
     val viewModel = LocalNostrViewModel.current
 
     val defaultMenuList = listOf(
-        "Relay Management" to { navController.navigate(Screen.Relay) },
+        "Update Profile" to { navigator.navigate(Screen.UpdateProfile) },
+        "Contact List" to { },
         "Spams & Blocks" to { },
-        "Contacts" to { },
+        "Relay Management" to { navigator.navigate(Screen.Relay) },
         "Settings" to { }
     )
 

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

@@ -33,7 +33,6 @@ import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.material3.toShape
 import androidx.compose.runtime.Composable
 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
@@ -49,17 +48,19 @@ 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.MutableStateFlow
+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.LocalNavController
+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
@@ -68,40 +69,30 @@ import su.reya.coop.short
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
-fun ImportScreen(
+fun ImportScreen() {
-    isLoading: Boolean,
-    onBack: () -> Unit,
-    onSave: (secret: String) -> Unit
-) {
     val snackbarHostState = LocalSnackbarHostState.current
-    val navController = LocalNavController.current
+    val navigator = LocalNavigator.current
+    val qrScanResult = LocalScanResult.current
     val focusManager = LocalFocusManager.current
     val viewModel = LocalNostrViewModel.current
+
     val scope = rememberCoroutineScope()
 
+    val isBusy by viewModel.isBusy.collectAsStateWithLifecycle(false)
     var secret by remember { mutableStateOf("") }
     var pubkey by remember { mutableStateOf<PublicKey?>(null) }
-    val metadata by remember(pubkey) {
-        if (pubkey != null) {
-            viewModel.getMetadata(pubkey!!)
-        } else {
-            MutableStateFlow(null)
-        }
-    }.collectAsState(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
 
-    val savedStateHandle = navController.currentBackStackEntry?.savedStateHandle
+    LaunchedEffect(qrScanResult.content) {
-    val qrResult by savedStateHandle
+        qrScanResult.content?.let { result ->
-        ?.getStateFlow<String?>("qr_result", null)
-        ?.collectAsState()
-        ?: remember { mutableStateOf(null) }
-
-    LaunchedEffect(qrResult) {
-        qrResult?.let { result ->
             runCatching {
                 if (result.startsWith("nsec")) {
                     Keys.parse(result)
@@ -113,8 +104,9 @@ fun ImportScreen(
             }
                 .onSuccess { it -> secret = result }
                 .onFailure { e -> println("Failed to parse QR: ${e.message}") }
+
             // Clear the nav state
-            navController.currentBackStackEntry?.savedStateHandle?.remove<String>("qr_result")
+            qrScanResult.clear()
         }
     }
 
@@ -133,7 +125,7 @@ fun ImportScreen(
                     containerColor = MaterialTheme.colorScheme.surfaceContainer,
                 ),
                 navigationIcon = {
-                    IconButton(onClick = onBack) {
+                    IconButton(onClick = { navigator.goBack() }) {
                         Icon(
                             painter = painterResource(Res.drawable.ic_arrow_back),
                             contentDescription = "Back"
@@ -141,7 +133,7 @@ fun ImportScreen(
                     }
                 },
                 actions = {
-                    IconButton(onClick = { navController.navigate(Screen.Scan) }) {
+                    IconButton(onClick = { navigator.navigate(Screen.Scan) }) {
                         Icon(
                             painter = painterResource(Res.drawable.ic_scanner),
                             contentDescription = "Scanner"
@@ -213,6 +205,7 @@ fun ImportScreen(
                             BasicTextField(
                                 value = secret,
                                 onValueChange = { secret = it },
+                                enabled = !isBusy,
                                 modifier = Modifier.fillMaxWidth(),
                                 maxLines = 4,
                                 keyboardOptions = KeyboardOptions(
@@ -225,10 +218,10 @@ fun ImportScreen(
                                 ),
                                 visualTransformation = PasswordVisualTransformation('*'),
                                 textStyle = MaterialTheme.typography.bodyMediumEmphasized.copy(
-                                    color = MaterialTheme.colorScheme.primaryFixed,
+                                    color = MaterialTheme.colorScheme.tertiaryFixedDim,
                                     fontWeight = FontWeight.SemiBold,
                                 ),
-                                cursorBrush = SolidColor(MaterialTheme.colorScheme.secondary),
+                                cursorBrush = SolidColor(MaterialTheme.colorScheme.tertiaryContainer),
                                 decorationBox = { innerTextField ->
                                     Box(contentAlignment = Alignment.CenterStart) {
                                         if (secret.isEmpty()) {
@@ -250,24 +243,28 @@ fun ImportScreen(
                         Spacer(modifier = Modifier.size(16.dp))
                         Button(
                             onClick = {
-                                if (pubkey == null) {
+                                scope.launch {
-                                    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)
                                     }
-                                } else {
-                                    onSave(secret)
                                 }
+
                             },
                             modifier = Modifier
                                 .fillMaxWidth()
                                 .height(ButtonDefaults.MediumContainerHeight),
-                            enabled = secret.isNotBlank() && !isLoading,
+                            enabled = secret.isNotBlank() && !isBusy,
                         ) {
-                            if (isLoading) {
+                            if (isBusy) {
                                 LoadingIndicator()
                             } else {
                                 Text(
-                                    text = if (pubkey == null) "Verify" else "Continue",
+                                    text = if (pubkey == null) "Verify" else "Click again to Continue",
                                     style = MaterialTheme.typography.titleMediumEmphasized,
                                 )
                             }

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

@@ -19,13 +19,13 @@ 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(
+fun MyQrScreen() {
-    onBack: () -> Unit
+    val navigator = LocalNavigator.current
-) {
     val snackbarHostState = LocalSnackbarHostState.current
     val viewModel = LocalNostrViewModel.current
     val currentUser = viewModel.currentUser() ?: return
@@ -41,7 +41,7 @@ fun MyQrScreen(
                     )
                 },
                 navigationIcon = {
-                    IconButton(onClick = onBack) {
+                    IconButton(onClick = { navigator.goBack() }) {
                         Icon(
                             painter = painterResource(Res.drawable.ic_arrow_back),
                             contentDescription = "Back"

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

@@ -54,8 +54,9 @@ 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.LocalNavController
+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
@@ -63,11 +64,10 @@ import su.reya.coop.short
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
-fun NewChatScreen(
+fun NewChatScreen() {
-    onBack: () -> Unit,
-) {
     val snackbarHostState = LocalSnackbarHostState.current
-    val navController = LocalNavController.current
+    val navigator = LocalNavigator.current
+    val qrScanResult = LocalScanResult.current
     val viewModel = LocalNostrViewModel.current
 
     val contactList by viewModel.contactList.collectAsState(initial = emptySet())
@@ -76,12 +76,6 @@ fun NewChatScreen(
     val selectedReceivers = remember { mutableStateListOf<PublicKey>() }
     var query by remember { mutableStateOf("") }
 
-    val savedStateHandle = navController.currentBackStackEntry?.savedStateHandle
-    val qrResult by savedStateHandle
-        ?.getStateFlow<String?>("qr_result", null)
-        ?.collectAsState()
-        ?: remember { mutableStateOf(null) }
-
     LaunchedEffect(query) {
         if (query.length >= 3) {
             delay(500) // 500ms debounce
@@ -111,13 +105,19 @@ fun NewChatScreen(
         }
     }
 
-    LaunchedEffect(qrResult) {
+    LaunchedEffect(qrScanResult.content) {
-        qrResult?.let { result ->
+        qrScanResult.content?.let { result ->
+            // Verify the content
             runCatching { PublicKey.parse(result) }
-                .onSuccess { pubkey -> selectedReceivers.add(pubkey) }
+                .onSuccess { pubkey ->
-                .onFailure { e -> println("Failed to parse QR: ${e.message}") }
+                    selectedReceivers.add(pubkey)
+                }
+                .onFailure { e ->
+                    println("Failed to parse QR: ${e.message}")
+                }
+
             // Clear the nav state
-            navController.currentBackStackEntry?.savedStateHandle?.remove<String>("qr_result")
+            qrScanResult.clear()
         }
     }
 
@@ -136,7 +136,7 @@ fun NewChatScreen(
                     containerColor = MaterialTheme.colorScheme.surfaceContainer,
                 ),
                 navigationIcon = {
-                    IconButton(onClick = onBack) {
+                    IconButton(onClick = { navigator.goBack() }) {
                         Icon(
                             painter = painterResource(Res.drawable.ic_arrow_back),
                             contentDescription = "Back"
@@ -144,7 +144,7 @@ fun NewChatScreen(
                     }
                 },
                 actions = {
-                    IconButton(onClick = { navController.navigate(Screen.Scan) }) {
+                    IconButton(onClick = { navigator.navigate(Screen.Scan) }) {
                         Icon(
                             painter = painterResource(Res.drawable.ic_scanner),
                             contentDescription = "Scanner"
@@ -168,7 +168,7 @@ fun NewChatScreen(
                     ExtendedFloatingActionButton(
                         onClick = {
                             val roomId = viewModel.createChatRoom(selectedReceivers.toList())
-                            navController.navigate(Screen.Chat(roomId))
+                            navigator.navigate(Screen.Chat(roomId))
                         },
                         expanded = false,
                         icon = {
@@ -259,7 +259,7 @@ fun NewChatScreen(
                             selectedReceivers = selectedReceivers,
                             onContactClick = { pubkey ->
                                 val roomId = viewModel.createChatRoom(listOf(pubkey))
-                                navController.navigate(Screen.Chat(roomId))
+                                navigator.navigate(Screen.Chat(roomId))
                             },
                         )
                         Spacer(modifier = Modifier.size(16.dp))
@@ -270,7 +270,7 @@ fun NewChatScreen(
                             selectedReceivers = selectedReceivers,
                             onContactClick = { pubkey ->
                                 val roomId = viewModel.createChatRoom(listOf(pubkey))
-                                navController.navigate(Screen.Chat(roomId))
+                                navigator.navigate(Screen.Chat(roomId))
                             }
                         )
                         Spacer(modifier = Modifier.size(16.dp))

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

@@ -1,273 +1,31 @@
 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.rememberCoroutineScope
-import androidx.compose.runtime.remember
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
-import androidx.compose.runtime.setValue
+import kotlinx.coroutines.launch
-import androidx.compose.ui.Alignment
+import su.reya.coop.LocalNavigator
-import androidx.compose.ui.Modifier
+import su.reya.coop.LocalNostrViewModel
-import androidx.compose.ui.draw.clip
+import su.reya.coop.Screen
-import androidx.compose.ui.graphics.SolidColor
+import su.reya.coop.shared.ProfileEditor
-import androidx.compose.ui.layout.ContentScale
-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 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 org.jetbrains.compose.resources.painterResource
-import su.reya.coop.LocalSnackbarHostState
 
-@OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
-fun NewIdentityScreen(
+fun NewIdentityScreen() {
-    isLoading: Boolean,
+    val viewModel = LocalNostrViewModel.current
-    onBack: () -> Unit,
+    val navigator = LocalNavigator.current
-    onSave: (name: String, bio: String?, picture: Uri?) -> Unit
+    val scope = rememberCoroutineScope()
-) {
+    val isBusy by viewModel.isBusy.collectAsStateWithLifecycle(false)
-    val snackbarHostState = LocalSnackbarHostState.current
-    val focusManager = LocalFocusManager.current
 
-    var name by remember { mutableStateOf("") }
+    ProfileEditor(
-    var bio by remember { mutableStateOf("") }
+        title = "Create a new identity",
-    var picture by remember { mutableStateOf<Uri?>(null) }
+        buttonLabel = "Continue",
-
+        isBusy = isBusy,
-    val launcher = rememberLauncherForActivityResult(
+        onBack = { navigator.goBack() },
-        contract = ActivityResultContracts.GetContent()
+        onConfirm = { name, bio, bytes, type ->
-    ) { uri: Uri? ->
+            scope.launch {
-        picture = uri
+                viewModel.createIdentity(name, bio, bytes, type)
-    }
+                navigator.navigate(Screen.Home)
-
-    Scaffold(
-        containerColor = MaterialTheme.colorScheme.surfaceContainer,
-        snackbarHost = { SnackbarHost(snackbarHostState) },
-        topBar = {
-            TopAppBar(
-                title = {
-                    Text(
-                        text = "Create a new identity",
-                        style = MaterialTheme.typography.titleMediumEmphasized
-                    )
-                },
-                navigationIcon = {
-                    IconButton(onClick = onBack) {
-                        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 },
-                                modifier = Modifier.fillMaxWidth(),
-                                singleLine = true,
-                                keyboardOptions = KeyboardOptions(
-                                    imeAction = ImeAction.Done,
-                                ),
-                                keyboardActions = KeyboardActions(
-                                    onDone = {
-                                        focusManager.clearFocus()
-                                    }
-                                ),
-                                textStyle = MaterialTheme.typography.headlineLargeEmphasized.copy(
-                                    color = MaterialTheme.colorScheme.primaryFixed,
-                                    fontWeight = FontWeight.SemiBold,
-                                ),
-                                cursorBrush = SolidColor(MaterialTheme.colorScheme.secondary),
-                                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 },
-                                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 = {
-                                onSave(name, bio, picture)
-                            },
-                            modifier = Modifier
-                                .fillMaxWidth()
-                                .height(ButtonDefaults.MediumContainerHeight),
-                            enabled = name.isNotBlank() && !isLoading,
-                        ) {
-                            if (isLoading) {
-                                LoadingIndicator()
-                            } else {
-                                Text(
-                                    text = "Continue",
-                                    style = MaterialTheme.typography.titleMediumEmphasized,
-                                )
-                            }
-                        }
-                    }
-                }
             }
         }
     )

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

@@ -1,5 +1,6 @@
 package su.reya.coop.screens
 
+import android.content.Intent
 import androidx.compose.foundation.Canvas
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -13,13 +14,17 @@ 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.FilledTonalButton
 import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.OutlinedButton
 import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarDuration
 import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.SnackbarResult
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.geometry.Size
@@ -27,6 +32,7 @@ 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.platform.LocalContext
 import androidx.compose.ui.text.LinkAnnotation
 import androidx.compose.ui.text.SpanStyle
 import androidx.compose.ui.text.TextLinkStyles
@@ -34,18 +40,29 @@ 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 androidx.core.net.toUri
 import coop.composeapp.generated.resources.Res
 import coop.composeapp.generated.resources.coop
+import kotlinx.coroutines.launch
 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
 import su.reya.coop.shared.getExpressiveFontFamily
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
-fun OnboardingScreen(onOpenImport: () -> Unit, onOpenNew: () -> Unit) {
+fun OnboardingScreen() {
+    val context = LocalContext.current
     val snackbarHostState = LocalSnackbarHostState.current
+    val navigator = LocalNavigator.current
+    val viewModel = LocalNostrViewModel.current
+    val scope = rememberCoroutineScope()
+
     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
@@ -127,7 +144,7 @@ fun OnboardingScreen(onOpenImport: () -> Unit, onOpenNew: () -> Unit) {
                             )
                             Spacer(modifier = Modifier.size(24.dp))
                             Button(
-                                onClick = onOpenNew,
+                                onClick = { navigator.navigate(Screen.NewIdentity) },
                                 modifier = Modifier
                                     .fillMaxWidth()
                                     .size(ButtonDefaults.MediumContainerHeight),
@@ -138,8 +155,45 @@ fun OnboardingScreen(onOpenImport: () -> Unit, onOpenNew: () -> Unit) {
                                 )
                             }
                             Spacer(modifier = Modifier.size(8.dp))
-                            OutlinedButton(
+                            FilledTonalButton(
-                                onClick = onOpenImport,
+                                onClick = {
+                                    scope.launch {
+                                        if (viewModel.isExternalSignerAvailable()) {
+                                            try {
+                                                viewModel.connectExternalSigner()
+                                                navigator.navigate(Screen.Home)
+                                            } catch (e: Exception) {
+                                                e.message?.let { snackbarHostState.showSnackbar(it) }
+                                            }
+                                        } else {
+                                            val result = snackbarHostState.showSnackbar(
+                                                message = "External signer not installed. Please install Amber or alternatives.",
+                                                actionLabel = "Install",
+                                                withDismissAction = true,
+                                                duration = SnackbarDuration.Long
+                                            )
+                                            if (result == SnackbarResult.ActionPerformed) {
+                                                val intent = Intent(
+                                                    Intent.ACTION_VIEW,
+                                                    "https://zapstore.dev/apps/com.greenart7c3.nostrsigner".toUri()
+                                                )
+                                                context.startActivity(intent)
+                                            }
+                                        }
+                                    }
+                                },
+                                modifier = Modifier
+                                    .fillMaxWidth()
+                                    .height(ButtonDefaults.MediumContainerHeight),
+                            ) {
+                                Text(
+                                    text = "Connect with Amber",
+                                    style = MaterialTheme.typography.titleMedium,
+                                )
+                            }
+                            Spacer(modifier = Modifier.size(8.dp))
+                            TextButton(
+                                onClick = { navigator.navigate(Screen.Import) },
                                 modifier = Modifier
                                     .fillMaxWidth()
                                     .height(ButtonDefaults.MediumContainerHeight),

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

@@ -44,7 +44,7 @@ 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.LocalNavController
+import su.reya.coop.LocalNavigator
 import su.reya.coop.LocalNostrViewModel
 import su.reya.coop.LocalSnackbarHostState
 import su.reya.coop.Screen
@@ -54,15 +54,12 @@ import su.reya.coop.short
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
-fun ProfileScreen(
+fun ProfileScreen(pubkey: String) {
-    onBack: () -> Unit,
-    pubkey: String
-) {
     val pubkey = runCatching { PublicKey.parse(pubkey) }.getOrNull() ?: return
 
     val context = LocalContext.current
     val snackbarHostState = LocalSnackbarHostState.current
-    val navController = LocalNavController.current
+    val navigator = LocalNavigator.current
     val viewModel = LocalNostrViewModel.current
 
     val scope = rememberCoroutineScope()
@@ -88,7 +85,7 @@ fun ProfileScreen(
             TopAppBar(
                 title = { },
                 navigationIcon = {
-                    IconButton(onClick = onBack) {
+                    IconButton(onClick = { navigator.goBack() }) {
                         Icon(
                             painter = painterResource(Res.drawable.ic_arrow_back),
                             contentDescription = "Back"
@@ -162,7 +159,7 @@ fun ProfileScreen(
                                     scope.launch {
                                         try {
                                             val roomId = viewModel.createChatRoom(listOf(pubkey))
-                                            navController.navigate(Screen.Chat(roomId))
+                                            navigator.navigate(Screen.Chat(roomId))
                                         } catch (e: Exception) {
                                             e.message?.let { snackbarHostState.showSnackbar(it) }
                                         }
@@ -179,7 +176,7 @@ fun ProfileScreen(
                             }
                             Text(
                                 text = "Message",
-                                style = MaterialTheme.typography.labelSmall
+                                style = MaterialTheme.typography.labelMedium
                             )
                         }
                         Column(

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

@@ -34,14 +34,14 @@ 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(
+fun RelayScreen() {
-    onBack: () -> Unit
+    val navigator = LocalNavigator.current
-) {
     val snackbarHostState = LocalSnackbarHostState.current
     val viewModel = LocalNostrViewModel.current
 
@@ -80,7 +80,7 @@ fun RelayScreen(
                     )
                 },
                 navigationIcon = {
-                    IconButton(onClick = onBack) {
+                    IconButton(onClick = { navigator.goBack() }) {
                         Icon(
                             painter = painterResource(Res.drawable.ic_arrow_back),
                             contentDescription = "Back"

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

@@ -30,21 +30,16 @@ 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.LocalNavController
+import su.reya.coop.LocalNavigator
+import su.reya.coop.LocalScanResult
 import su.reya.coop.LocalSnackbarHostState
 
 @SuppressLint("UnusedMaterial3ScaffoldPaddingParameter")
 @Composable
-fun ScanScreen(
+fun ScanScreen() {
-    onBack: () -> Unit
+    val navigator = LocalNavigator.current
-) {
-    val navController = LocalNavController.current
     val snackbarHostState = LocalSnackbarHostState.current
-
+    val qrScanResult = LocalScanResult.current
-    val onResult: (String) -> Unit = { result ->
-        navController.previousBackStackEntry?.savedStateHandle?.set("qr_result", result)
-        navController.popBackStack()
-    }
 
     Scaffold(
         snackbarHost = { SnackbarHost(snackbarHostState) },
@@ -57,7 +52,7 @@ fun ScanScreen(
                     )
                 },
                 navigationIcon = {
-                    IconButton(onClick = onBack) {
+                    IconButton(onClick = { navigator.goBack() }) {
                         Icon(
                             painter = painterResource(Res.drawable.ic_arrow_back),
                             contentDescription = "Back"
@@ -76,7 +71,8 @@ fun ScanScreen(
             ScannerWithPermissions(
                 modifier = Modifier.fillMaxSize(),
                 onScanned = {
-                    onResult(it)
+                    qrScanResult.content = it
+                    navigator.goBack()
                     true
                 },
                 types = listOf(CodeType.QR),

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

@@ -0,0 +1,40 @@
+package su.reya.coop.screens
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import kotlinx.coroutines.launch
+import su.reya.coop.LocalNavigator
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.shared.ProfileEditor
+
+@Composable
+fun UpdateProfileScreen() {
+    val viewModel = LocalNostrViewModel.current
+    val navigator = LocalNavigator.current
+    val scope = rememberCoroutineScope()
+
+    val currentUser = viewModel.currentUser() ?: return
+    val metadata by viewModel.getMetadata(currentUser).collectAsState(initial = null)
+    val isBusy by viewModel.isBusy.collectAsStateWithLifecycle(false)
+
+    val profile = metadata?.asRecord()
+
+    ProfileEditor(
+        title = "Update profile",
+        buttonLabel = "Save changes",
+        initialName = profile?.displayName ?: profile?.name ?: "",
+        initialBio = profile?.about ?: "",
+        initialPicture = profile?.picture,
+        isBusy = isBusy,
+        onBack = { navigator.goBack() },
+        onConfirm = { name, bio, bytes, type ->
+            scope.launch {
+                viewModel.updateProfile(name, bio, bytes, type)
+                navigator.goBack()
+            }
+        }
+    )
+}

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

@@ -0,0 +1,294 @@
+package su.reya.coop.shared
+
+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.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.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 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.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import org.jetbrains.compose.resources.painterResource
+import su.reya.coop.LocalSnackbarHostState
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ProfileEditor(
+    title: String,
+    buttonLabel: String,
+    initialName: String = "",
+    initialBio: String = "",
+    initialPicture: Any? = null, // Accepts Uri (picked) or String (current URL)
+    isBusy: Boolean = false,
+    onBack: () -> Unit,
+    onConfirm: (name: String, bio: String, pictureBytes: ByteArray?, contentType: String?) -> Unit
+) {
+    val context = LocalContext.current
+    val snackbarHostState = LocalSnackbarHostState.current
+    val focusManager = LocalFocusManager.current
+    var name by remember(initialName) { mutableStateOf(initialName) }
+    var bio by remember(initialBio) { mutableStateOf(initialBio) }
+    var picture by remember(initialPicture) { mutableStateOf(initialPicture) }
+
+    val hasPicture = remember(picture) {
+        when (picture) {
+            null -> false
+            is String -> (picture as CharSequence).isNotBlank()
+            else -> true
+        }
+    }
+
+    val launcher = rememberLauncherForActivityResult(ActivityResultContracts.GetContent()) { uri ->
+        picture = uri
+    }
+
+    Scaffold(
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = { Text(title, style = MaterialTheme.typography.titleMediumEmphasized) },
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(
+                            painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                )
+            )
+        }
+    ) { 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 (hasPicture) {
+                        AsyncImage(
+                            model = picture,
+                            contentDescription = "Profile picture",
+                            modifier = Modifier.fillMaxSize(),
+                            contentScale = ContentScale.Crop
+                        )
+                    } else {
+                        Surface(
+                            color = MaterialTheme.colorScheme.tertiaryContainer,
+                            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.onTertiaryFixed
+                                )
+                            }
+                        }
+                    }
+                }
+            }
+            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 = !isBusy,
+                            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 = !isBusy,
+                            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(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .size(ButtonDefaults.MediumContainerHeight),
+                        onClick = {
+                            val scope = CoroutineScope(Dispatchers.Main)
+                            scope.launch {
+                                val bytes = withContext(Dispatchers.IO) {
+                                    (picture as? Uri)?.let {
+                                        context.contentResolver.openInputStream(it)?.readBytes()
+                                    }
+                                }
+                                val type =
+                                    (picture as? Uri)?.let { context.contentResolver.getType(it) }
+                                onConfirm(name, bio, bytes, type)
+                            }
+                        },
+                        enabled = name.isNotBlank() && !isBusy
+                    ) {
+                        if (isBusy) {
+                            LoadingIndicator()
+                        } else {
+                            Text(
+                                text = buttonLabel,
+                                style = MaterialTheme.typography.titleMediumEmphasized,
+                            )
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

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

@@ -9,25 +9,32 @@ import su.reya.coop.Room
 import su.reya.coop.short
 
 fun Room.displayNameFlow(viewModel: NostrViewModel): Flow<String> {
-    if (!subject.isNullOrBlank()) return flowOf<String>(subject!!)
+    // Return early if there's a custom subject/room name
+    subject?.takeIf { it.isNotBlank() }?.let { return flowOf(it) }
 
-    val memberFlows = members.map { viewModel.getMetadata(it) }
+    val displayMembers = if (isGroup()) members.take(2) else members.take(1)
+    if (displayMembers.isEmpty()) return flowOf("Unknown")
+
+    return combine(displayMembers.map { viewModel.getMetadata(it) }) { metadataArray ->
+        val names = metadataArray.mapIndexed { i, metadata ->
+            val profile = metadata?.asRecord()
+            profile?.name?.takeIf { it.isNotBlank() }
+                ?: profile?.displayName?.takeIf { it.isNotBlank() }
+                ?: displayMembers[i].short()
+        }
 
-    return combine(memberFlows) { metadataArray ->
         if (isGroup()) {
-            val profiles = metadataArray.map { it?.asRecord() }
+            val combined = names.joinToString(", ")
-            val names = profiles.take(2).mapNotNull { it?.name ?: it?.displayName }
+            val extraCount = members.size - names.size
-            var combined = names.joinToString(", ")
+            if (extraCount > 0) "$combined, +$extraCount" else combined
-            if (profiles.size > 2) combined += ", +${profiles.size - 2}"
-            combined.ifBlank { "Unknown group" }
         } else {
-            val profile = metadataArray.firstOrNull()?.asRecord()
+            val name = names.first()
-            profile?.name ?: profile?.displayName ?: members.firstOrNull()?.short() ?: "Unknown"
+            if (displayMembers.first() == viewModel.currentUser()) "$name (you)" else name
         }
     }
 }
 
 fun Room.pictureFlow(viewModel: NostrViewModel): Flow<String?> {
-    val firstMember = members.firstOrNull() ?: return kotlinx.coroutines.flow.flowOf(null)
+    val firstMember = members.firstOrNull() ?: return flowOf(null)
     return viewModel.getMetadata(firstMember).map { it?.asRecord()?.picture }
-}
+}

gradle/libs.versions.toml

@@ -1,14 +1,13 @@
 [versions]
 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-navigation = "2.9.8"
 androidx-testExt = "1.3.0"
 androidx-splashscreen = "1.2.0"
 composeMultiplatform = "1.11.0"
@@ -17,6 +16,7 @@ junit = "4.13.2"
 kotlin = "2.3.21"
 kotlinx-serialization = "1.11.0"
 material3 = "1.11.0-alpha07"
+multiplatform-nav3-ui = "1.1.1"
 ktor = "3.5.0"
 
 [libraries]
@@ -31,7 +31,6 @@ androidx-espresso-core = { module = "androidx.test.espresso:espresso-core", vers
 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" }
-androidx-navigation-compose = { module = "androidx.navigation:navigation-compose", version.ref = "androidx-navigation" }
 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" }
@@ -49,6 +48,8 @@ ktor-client-darwin = { module = "io.ktor:ktor-client-darwin", version.ref = "kto
 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" }

shared/build.gradle.kts

@@ -30,9 +30,10 @@ kotlin {
             implementation(libs.ktor.client.content.negotiation)
             implementation(libs.ktor.serialization.kotlinx.json)
             implementation(libs.androidx.lifecycle.viewmodelCompose)
+            implementation(libs.androidx.lifecycle.runtimeCompose)
             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("su.reya:nostr-sdk-kmp:0.2.6")
             implementation("com.squareup.okio:okio:3.16.2")
         }
         androidMain.dependencies {

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

@@ -1,75 +0,0 @@
-package su.reya.coop
-
-import io.ktor.client.HttpClient
-import io.ktor.client.plugins.websocket.DefaultClientWebSocketSession
-import io.ktor.client.plugins.websocket.webSocketSession
-import io.ktor.client.request.url
-import io.ktor.websocket.Frame
-import io.ktor.websocket.close
-import io.ktor.websocket.readBytes
-import io.ktor.websocket.readText
-import kotlinx.coroutines.cancel
-import kotlinx.coroutines.channels.ClosedReceiveChannelException
-import rust.nostr.sdk.ConnectionMode
-import rust.nostr.sdk.CustomWebSocketTransport
-import rust.nostr.sdk.WebSocketAdapter
-import rust.nostr.sdk.WebSocketAdapterWrapper
-import rust.nostr.sdk.WebSocketMessage
-
-class KtorWebSocketAdapter(
-    private val client: HttpClient,
-    private val session: DefaultClientWebSocketSession
-) : WebSocketAdapter {
-
-    override suspend fun send(msg: WebSocketMessage) {
-        try {
-            when (msg) {
-                is WebSocketMessage.Text -> session.send(Frame.Text(msg.text))
-                is WebSocketMessage.Binary -> session.send(Frame.Binary(true, msg.bytes))
-                is WebSocketMessage.Ping -> session.send(Frame.Ping(msg.bytes))
-                is WebSocketMessage.Pong -> session.send(Frame.Pong(msg.bytes))
-                else -> {}
-            }
-        } catch (e: Exception) {
-            println("Attempted to send on a closed WebSocket: ${e.message}")
-            throw e
-        }
-    }
-
-    override suspend fun recv(): WebSocketMessage? {
-        return try {
-            when (val frame = session.incoming.receive()) {
-                is Frame.Text -> WebSocketMessage.Text(frame.readText())
-                is Frame.Binary -> WebSocketMessage.Binary(frame.readBytes())
-                is Frame.Ping -> WebSocketMessage.Ping(frame.readBytes())
-                is Frame.Pong -> WebSocketMessage.Pong(frame.readBytes())
-                else -> null
-            }
-        } catch (e: ClosedReceiveChannelException) {
-            null
-        } catch (e: Exception) {
-            throw e
-        }
-    }
-
-    override suspend fun closeConnection() {
-        session.cancel()
-        session.close()
-    }
-}
-
-class CoopWebSocketClient(private val httpClient: HttpClient) : CustomWebSocketTransport {
-    override fun supportPing(): Boolean = false
-
-    override suspend fun connect(url: String, mode: ConnectionMode): WebSocketAdapterWrapper {
-        try {
-            val session = httpClient.webSocketSession {
-                url(url)
-            }
-            val adapter = KtorWebSocketAdapter(httpClient, session)
-            return WebSocketAdapterWrapper(adapter)
-        } catch (e: Exception) {
-            throw e
-        }
-    }
-}

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

@@ -0,0 +1,44 @@
+package su.reya.coop
+
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.json.Json
+import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.UnsignedEvent
+
+/**
+ * Platform interface for NIP-55 external signer communication.
+ * Implemented on Android; no-op/null on other platforms.
+ */
+interface ExternalSignerHandler {
+    fun isAvailable(): Boolean
+    fun setPackageName(packageName: String)
+    suspend fun getPublicKey(permissions: String? = null): ExternalSignerResult?
+    suspend fun signEvent(event: UnsignedEvent, currentUser: PublicKey): String?
+    suspend fun nip04Encrypt(plaintext: String, pubkey: PublicKey): String?
+    suspend fun nip04Decrypt(ciphertext: String, pubkey: PublicKey): String?
+    suspend fun nip44Encrypt(plaintext: String, pubkey: PublicKey, currentUser: PublicKey): String?
+    suspend fun nip44Decrypt(ciphertext: String, pubkey: PublicKey, currentUser: PublicKey): String?
+}
+
+@Serializable
+data class SignerPermission(
+    val type: String,
+    val kind: Int? = null,
+)
+
+object SignerPermissions {
+    fun signEvent(kind: Int? = null) = SignerPermission(type = "sign_event", kind = kind)
+    fun nip04Encrypt() = SignerPermission(type = "nip04_encrypt")
+    fun nip04Decrypt() = SignerPermission(type = "nip04_decrypt")
+    fun nip44Encrypt() = SignerPermission(type = "nip44_encrypt")
+    fun nip44Decrypt() = SignerPermission(type = "nip44_decrypt")
+
+    fun toJson(permissions: List<SignerPermission>): String {
+        return Json.encodeToString(permissions)
+    }
+}
+
+data class ExternalSignerResult(
+    val pubkey: PublicKey,
+    val packageName: String,
+)

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

@@ -0,0 +1,40 @@
+package su.reya.coop
+
+import rust.nostr.sdk.AsyncNostrSigner
+import rust.nostr.sdk.Event
+import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.UnsignedEvent
+
+class ExternalSignerProxy(
+    private val handler: ExternalSignerHandler,
+    private val currentUser: PublicKey,
+) : AsyncNostrSigner {
+    override suspend fun getPublicKeyAsync(): PublicKey {
+        return currentUser
+    }
+
+    override suspend fun signEventAsync(unsignedEvent: UnsignedEvent): Event? {
+        val signedJson = handler.signEvent(unsignedEvent, currentUser) ?: return null
+        return Event.fromJson(signedJson)
+    }
+
+    override suspend fun nip04EncryptAsync(publicKey: PublicKey, content: String): String {
+        return handler.nip04Encrypt(content, publicKey)
+            ?: throw Exception("NIP-04 encrypt rejected")
+    }
+
+    override suspend fun nip04DecryptAsync(publicKey: PublicKey, encryptedContent: String): String {
+        return handler.nip04Decrypt(encryptedContent, publicKey)
+            ?: throw Exception("NIP-04 decrypt rejected")
+    }
+
+    override suspend fun nip44EncryptAsync(publicKey: PublicKey, content: String): String {
+        return handler.nip44Encrypt(content, publicKey, currentUser)
+            ?: throw Exception("NIP-44 encrypt rejected")
+    }
+
+    override suspend fun nip44DecryptAsync(publicKey: PublicKey, payload: String): String {
+        return handler.nip44Decrypt(payload, publicKey, currentUser)
+            ?: throw Exception("NIP-44 decrypt rejected")
+    }
+}

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

@@ -2,7 +2,6 @@ package su.reya.coop
 
 import io.ktor.client.HttpClient
 import io.ktor.client.call.body
-import io.ktor.client.plugins.websocket.WebSockets
 import io.ktor.client.request.get
 import io.ktor.client.statement.HttpResponse
 import kotlinx.coroutines.Job
@@ -39,26 +38,39 @@ import rust.nostr.sdk.PublicKey
 import rust.nostr.sdk.RelayCapabilities
 import rust.nostr.sdk.RelayMessageEnum
 import rust.nostr.sdk.RelayMetadata
+import rust.nostr.sdk.RelayStatus
 import rust.nostr.sdk.RelayUrl
 import rust.nostr.sdk.ReqExitPolicy
 import rust.nostr.sdk.ReqTarget
 import rust.nostr.sdk.SendEventTarget
+import rust.nostr.sdk.SignerAuthenticator
 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 rust.nostr.sdk.nip59MakeGiftWrapAsync
 import kotlin.time.Duration
+import kotlin.time.Duration.Companion.milliseconds
 
 object NostrManager {
     val instance = Nostr()
+
+    val BOOTSTRAP_RELAYS = listOf(
+        "wss://relay.primal.net",
+        "wss://purplepag.es"
+    )
+
+    val INDEXER_RELAY = listOf(
+        "wss://indexer.coracle.social",
+    )
+
+    val ALL_RELAYS = BOOTSTRAP_RELAYS + INDEXER_RELAY
 }
 
 class Nostr {
@@ -75,7 +87,6 @@ class Nostr {
 
     private val isInitialized = MutableStateFlow(false)
 
-    // Add these to the Nostr class
     private val _newEvents = MutableSharedFlow<UnsignedEvent>(extraBufferCapacity = 100)
     val newEvents = _newEvents.asSharedFlow()
 
@@ -99,35 +110,33 @@ class Nostr {
     suspend fun emitContactListUpdate(contacts: List<PublicKey>) =
         _contactListUpdates.emit(contacts)
 
-    suspend fun init(dbPath: String) {
+    suspend fun init(
+        dbPath: String,
+        logLevel: LogLevel = LogLevel.WARN
+    ) {
         try {
             if (isInitialized.value) return
 
             // Initialize the logger for nostr client
-            initLogger(LogLevel.DEBUG)
+            initLogger(logLevel)
 
+            // Initialize configurations for nostr client
             val lmdb = NostrDatabase.lmdb(dbPath)
             val gossip = NostrGossip.inMemory()
+            val authenticator = SignerAuthenticator(signer)
             val idleTimeout = Duration.parse("5m")
-            val httpClient = HttpClient {
-                install(WebSockets)
-            }
 
             client =
                 ClientBuilder()
-                    .signer(signer)
+                    .authenticator(authenticator)
-                    .websocketTransport(CoopWebSocketClient(httpClient))
                     .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()
 
@@ -142,24 +151,43 @@ class Nostr {
     }
 
     suspend fun connectBootstrapRelays() {
-        // Bootstrap relays
+        NostrManager.BOOTSTRAP_RELAYS.forEach { url ->
-        client?.addRelay(RelayUrl.parse("wss://relay.primal.net"))
+            client?.addRelay(RelayUrl.parse(url))
-        client?.addRelay(RelayUrl.parse("wss://user.kindpag.es"))
+        }
-        client?.addRelay(RelayUrl.parse("wss://purplepag.es"))
+        NostrManager.INDEXER_RELAY.forEach { url ->
+            client?.addRelay(
+                url = RelayUrl.parse(url),
+                capabilities = RelayCapabilities.gossip()
+            )
+        }
+        // Connect to all bootstrap relays
+        client?.connect()
+    }
 
-
+    suspend fun reconnect() {
-        // Indexer relay for NIP-65 discovery
+        NostrManager.ALL_RELAYS.forEach { url ->
-        client?.addRelay(
+            try {
-            url = RelayUrl.parse("wss://indexer.coracle.social"),
+                client?.relay(RelayUrl.parse(url)).let { relay ->
-            capabilities = RelayCapabilities.gossip()
+                    if (relay != null) {
-        )
+                        if (relay.status() != RelayStatus.CONNECTED) {
-
+                            relay.connect()
-        // Connect to all bootstrap relays and wait for all connections to be established
+                        }
-        client?.connect(Duration.parse("2s"))
+                    }
+                }
+            } catch (e: Exception) {
+                println("Failed to reconnect relay: ${e.message}")
+            }
+        }
     }
 
     suspend fun disconnect() {
-        client?.shutdown()
+        NostrManager.ALL_RELAYS.forEach { url ->
+            try {
+                client?.disconnectRelay(RelayUrl.parse(url))
+            } catch (e: Exception) {
+                println("Failed to disconnect relay: ${e.message}")
+            }
+        }
     }
 
     suspend fun exit() {
@@ -230,7 +258,7 @@ class Nostr {
 
             client?.subscribe(
                 target = ReqTarget.manual(target),
-                id = "all-gift-wraps"
+                id = "gift-wraps"
             )
         } catch (e: Exception) {
             throw IllegalStateException("Failed to fetch user messages: ${e.message}", e)
@@ -295,7 +323,7 @@ class Nostr {
                                     eoseTrackerJob?.cancel()
                                     // Start a new tracker
                                     eoseTrackerJob = launch {
-                                        delay(10000) // Wait for 10 seconds
+                                        delay(10000.milliseconds) // Wait for 10 seconds
                                         onSubscriptionClose()
                                     }
 
@@ -314,7 +342,7 @@ class Nostr {
                         is RelayMessageEnum.EndOfStoredEvents -> {
                             val subscriptionId = message.subscriptionId
 
-                            if (subscriptionId == "all-gift-wraps" || subscriptionId == "newest-gift-wraps") {
+                            if (subscriptionId == "gift-wraps") {
                                 onSubscriptionClose()
                             }
                         }
@@ -359,16 +387,15 @@ class Nostr {
             val currentUser =
                 signer.currentUser ?: throw IllegalStateException("User not signed in")
 
-            // Ensure the rumor ID is set
+            // Construct the room id
-            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("a", listOf(roomId.toString())),
-                Tag.custom(TagKind.Unknown("k"), listOf("dm"))
+                Tag.custom("k", listOf("14"))
             )
 
             // Set event kind
@@ -376,8 +403,8 @@ class Nostr {
 
             val event = EventBuilder(kind, rumor.asJson())
                 .tags(tags)
-                .build(currentUser)
+                .finalizeUnsigned(currentUser)
-                .signWithKeys(Keys.generate())
+                .signAsync(Keys.generate())
 
             client?.database()?.saveEvent(event)
         } catch (e: Exception) {
@@ -397,7 +424,6 @@ class Nostr {
         // 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
@@ -427,9 +453,10 @@ class Nostr {
             client?.addRelay(
                 url = relay,
                 capabilities =
-                    if (metadata == RelayMetadata.READ) RelayCapabilities.read()
+                    when (metadata) {
-                    else if (metadata == RelayMetadata.WRITE) RelayCapabilities.write()
+                        RelayMetadata.READ -> RelayCapabilities.read()
-                    else RelayCapabilities.none()
+                        RelayMetadata.WRITE -> RelayCapabilities.write()
+                    }
             )
             client?.connectRelay(relay)
         }
@@ -440,7 +467,7 @@ class Nostr {
     suspend fun getDefaultMsgRelayList(): List<RelayUrl> {
         // Construct a list of messaging relays
         val msgRelayList = listOf(
-            RelayUrl.parse("wss://relay.0xchat.com"),
+            RelayUrl.parse("wss://auth.nostr1.com"),
             RelayUrl.parse("wss://nip17.com"),
         )
 
@@ -456,7 +483,7 @@ class Nostr {
     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);
+        val relayListEvent = EventBuilder.relayList(relayList).finalizeAsync(keys);
 
         client?.sendEvent(
             event = relayListEvent,
@@ -467,7 +494,7 @@ class Nostr {
 
         // Send messaging relay list event
         val msgRelayList = getDefaultMsgRelayList()
-        val msgRelayListEvent = EventBuilder.nip17RelayList(msgRelayList).signWithKeys(keys)
+        val msgRelayListEvent = EventBuilder.nip17RelayList(msgRelayList).finalizeAsync(keys)
 
         client?.sendEvent(
             event = msgRelayListEvent,
@@ -478,7 +505,7 @@ class Nostr {
         // Send metadata event
         val metadata =
             Metadata.fromRecord(MetadataRecord(displayName = name, about = bio, picture = picture))
-        val metadataEvent = EventBuilder.metadata(metadata).signWithKeys(keys)
+        val metadataEvent = EventBuilder.metadata(metadata).finalizeAsync(keys)
 
         client?.sendEvent(
             event = metadataEvent,
@@ -488,8 +515,8 @@ class Nostr {
 
         // Send contact list event
         val defaultContact =
-            listOf(Contact(publicKey = PublicKey.parse("npub1j3rz3ndl902lya6ywxvy5c983lxs8mpukqnx4pa4lt5wrykwl5ys7wpw3x")))
+            Contact(PublicKey.parse("npub1j3rz3ndl902lya6ywxvy5c983lxs8mpukqnx4pa4lt5wrykwl5ys7wpw3x"))
-        val contactListEvent = EventBuilder.contactList(defaultContact).signWithKeys(keys)
+        val contactListEvent = EventBuilder.contactList(listOf(defaultContact)).finalizeAsync(keys)
 
         client?.sendEvent(
             event = contactListEvent,
@@ -500,20 +527,67 @@ class Nostr {
         setSigner(keys)
     }
 
+    suspend fun updateProfile(
+        name: String? = null,
+        bio: String? = null,
+        picture: String? = null
+    ): Metadata {
+        val currentUser = signer.currentUser ?: throw IllegalStateException("User not signed in")
+
+        try {
+            val record = getLatestMetadata(currentUser)?.asRecord() ?: MetadataRecord()
+            val newRecord = record.copy(
+                displayName = name ?: record.displayName,
+                about = bio ?: record.about,
+                picture = picture ?: record.picture
+            )
+            val newMetadata = Metadata.fromRecord(newRecord)
+            val event = EventBuilder.metadata(newMetadata).finalizeAsync(signer)
+
+            client?.sendEvent(
+                event = event,
+                target = SendEventTarget.broadcast(),
+                ackPolicy = AckPolicy.none()
+            )
+
+            return newMetadata
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to update identity: ${e.message}", e)
+        }
+    }
+
+    private suspend fun getLatestMetadata(pubkey: PublicKey): Metadata? {
+        return try {
+            val kind = Kind.fromStd(KindStandard.METADATA);
+            val filter = Filter().kind(kind).author(pubkey).limit(1u)
+            val event = client?.database()?.query(filter)?.first() ?: return null
+
+            Metadata.fromJson(event.content())
+        } catch (e: Exception) {
+            println("Failed to get latest metadata: ${e.message}")
+            null
+        }
+    }
+
     suspend fun getAllCacheMetadata(): Map<PublicKey, Metadata> {
         try {
-            val filter = Filter().kind(Kind.fromStd(KindStandard.METADATA)).limit(200u)
+            val filter = Filter().kind(Kind.fromStd(KindStandard.METADATA)).limit(100u)
             val events = client?.database()?.query(filter)
             val results = mutableMapOf<PublicKey, Metadata>()
 
             events?.toVec()?.forEach { event ->
-                val metadata = Metadata.fromJson(event.content())
+                try {
-                results[event.author()] = metadata
+                    val metadata = Metadata.fromJson(event.content())
+                    results[event.author()] = metadata
+                } catch (e: Exception) {
+                    println("Failed to parse metadata: $e")
+                }
             }
 
             return results
         } catch (e: Exception) {
-            throw IllegalStateException("Failed to get cache metadata: ${e.message}", e)
+            println("Failed to get all cache metadata: ${e.message}")
+            return emptyMap()
         }
     }
 
@@ -533,7 +607,6 @@ class Nostr {
                 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),
                     )
                 )
@@ -546,7 +619,7 @@ class Nostr {
 
     suspend fun setMsgRelays(urls: List<RelayUrl>) {
         try {
-            val event = EventBuilder.nip17RelayList(urls).signAsync(signer)
+            val event = EventBuilder.nip17RelayList(urls).finalizeAsync(signer)
 
             client?.sendEvent(
                 event = event,
@@ -596,7 +669,7 @@ class Nostr {
             val kTag = SingleLetterTag.lowercase(Alphabet.K)
 
             // Get all events sent by the user
-            val filter = Filter().kind(kind).author(userPubkey).customTag(kTag, "dm")
+            val filter = Filter().kind(kind).author(userPubkey).customTags(kTag, listOf("14", "dm"))
             val events = client?.database()?.query(filter)
 
             // Collect rooms
@@ -641,39 +714,33 @@ class Nostr {
             return events
                 ?.toVec()
                 ?.map { UnsignedEvent.fromJson(it.content()) }
+                // Filter out events without public keys (receivers)
+                ?.filter { it.tags().publicKeys().isNotEmpty() }
                 ?.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>> {
+    suspend fun chatRoomConnect(members: List<PublicKey>) {
         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)}",
+                    id = null,
                     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)
         }
@@ -683,10 +750,8 @@ class Nostr {
         try {
             val urls = nip17ExtractRelayList(event);
             for (url in urls) {
-                if (client?.relay(url) == null) {
+                client?.addRelay(url, RelayCapabilities.gossip())
-                    client?.addRelay(url)
+                client?.connectRelay(url)
-                    client?.connectRelay(url)
-                }
             }
         } catch (e: Exception) {
             throw IllegalStateException("Failed to connect to relays: ${e.message}", e)
@@ -694,7 +759,7 @@ class Nostr {
     }
 
     suspend fun sendMessage(
-        to: List<PublicKey>,
+        to: Set<PublicKey>,
         content: String,
         subject: String? = null,
         replies: List<EventId> = emptyList(),
@@ -708,7 +773,7 @@ class Nostr {
 
             // Add a subject tag if provided
             if (subject != null) {
-                tags.add(Tag.custom(TagKind.Subject, listOf(subject)))
+                tags.add(Tag.custom("subject", listOf(subject)))
             }
 
             // Add event tags for replies
@@ -720,20 +785,15 @@ class Nostr {
 
             // Add public key tags for each recipient
             to.forEach { pubkey ->
-                if (pubkey != currentUser) {
+                tags.add(Tag.publicKey(pubkey))
-                    tags.add(Tag.publicKey(pubkey))
-                }
             }
 
-            for (receiver in listOf(currentUser) + to) {
+            for (receiver in setOf(currentUser) + to) {
                 // Construct the rumor event
                 // NEVER SIGN this event with the current user signer
-                val rumor = EventBuilder
+                val rumor = EventBuilder(Kind.fromStd(KindStandard.PRIVATE_DIRECT_MESSAGE), content)
-                    .privateMsgRumor(receiver = receiver, message = content)
                     .tags(tags)
-                    .build(currentUser)
+                    .finalizeUnsigned(currentUser)
-                    // Ensure the event ID is set
-                    .ensureId()
 
                 // Emit the rumor to the chat screen
                 if (receiver == currentUser) {
@@ -741,12 +801,12 @@ class Nostr {
                 }
 
                 // Construct the gift wrap event
-                val gift = giftWrapAsync(
+                val gift = nip59MakeGiftWrapAsync(
                     signer = signer,
                     receiverPubkey = receiver,
                     rumor = rumor,
                     extraTags = listOf(
-                        Tag.custom(TagKind.Unknown("k"), listOf("14"))
+                        Tag.custom("k", listOf("14"))
                     )
                 )
 
@@ -807,13 +867,12 @@ class Nostr {
 
             val kinds = listOf(Kind.fromStd(KindStandard.METADATA))
             val filter = Filter().kinds(kinds).search(query).limit(10u)
-            val target =
+            val target = ReqTarget.manual(mapOf(searchRelay to listOf(filter)))
-                ReqTarget.manual(mapOf(RelayUrl.parse("wss://antiprimal.net") to listOf(filter)))
 
             val stream = client?.streamEvents(
                 target = target,
                 id = "search",
-                timeout = Duration.parse("4s"),
+                timeout = Duration.parse("3s"),
                 policy = ReqExitPolicy.ExitOnEose
             )
 

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

@@ -1,12 +1,15 @@
 package su.reya.coop
 
+import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.ViewModel
+import androidx.lifecycle.repeatOnLifecycle
 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.coroutineScope
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -19,9 +22,12 @@ 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.Kind
+import rust.nostr.sdk.KindStandard
 import rust.nostr.sdk.Metadata
 import rust.nostr.sdk.NostrConnect
 import rust.nostr.sdk.NostrConnectUri
@@ -33,23 +39,22 @@ 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
+import kotlin.time.Duration.Companion.milliseconds
+import kotlin.time.Duration.Companion.seconds
 
 class NostrViewModel(
     private val nostr: Nostr,
-    private val secretStore: SecretStorage
+    private val secretStore: SecretStorage,
+    private val externalSignerHandler: ExternalSignerHandler? = null,
 ) : ViewModel() {
+    private val _isNotificationBannerDismissed = MutableStateFlow(false)
+    val isNotificationBannerDismissed = _isNotificationBannerDismissed.asStateFlow()
+
     private val _signerRequired = MutableStateFlow<Boolean?>(null)
     val signerRequired = _signerRequired.asStateFlow()
 
-    private val _isCreating = MutableStateFlow(false)
+    private val _isBusy = MutableStateFlow(false)
-    val isCreating = _isCreating.asStateFlow()
+    val isBusy = _isBusy.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()
@@ -57,10 +62,16 @@ class NostrViewModel(
     private val _isRelayListEmpty = MutableStateFlow(false)
     val isRelayListEmpty = _isRelayListEmpty.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 _newEvents = MutableSharedFlow<UnsignedEvent>(extraBufferCapacity = 100)
     val newEvents = _newEvents.asSharedFlow()
 
-    private val _sentReports = MutableStateFlow<Map<EventId, List<RelayUrl>>>(emptyMap())
+    private val _sentReports = MutableSharedFlow<Map<EventId, List<RelayUrl>>>()
     val sentReport = _sentReports.asSharedFlow()
 
     private val _errorEvents = Channel<String>(Channel.BUFFERED)
@@ -71,25 +82,43 @@ class NostrViewModel(
     private val seenPublicKeys = mutableSetOf<PublicKey>()
 
     init {
+        // Skip the splash screen if a user is already logged in
+        if (nostr.signer.currentUser != null) {
+            _signerRequired.value = false
+        }
+
+        // Check if the notification banner has been dismissed
+        checkNotificationBannerDismissedStatus()
+
         // Check local stored secret (secret key or bunker)
         login()
 
+        // Automatically reconnect bootstrap relays
+        reconnect()
+
         // Observe the signer state and verify the relay list
         observeSignerAndCheckRelays()
 
         // Get all local stored metadata
         getCacheMetadata()
+    }
 
-        // Observe new events from the Nostr client
+    fun bindLifecycle(lifecycle: Lifecycle) {
-        runObserver()
+        viewModelScope.launch {
-
+            lifecycle.repeatOnLifecycle(Lifecycle.State.STARTED) {
-        // Wait and merge metadata requests into a single batch
+                coroutineScope {
-        runMetadataBatching()
+                    launch { refreshChatRooms() }
+                    launch { runObserver() }
+                    launch { runMetadataBatching() }
+                }
+            }
+        }
     }
 
     override fun onCleared() {
         super.onCleared()
-        // Ensure all relays are disconnect
+
+        // Disconnect to all bootstrap relays
         viewModelScope.launch {
             withContext(NonCancellable) {
                 nostr.disconnect()
@@ -100,85 +129,110 @@ class NostrViewModel(
     private fun showError(message: String) {
         viewModelScope.launch {
             _errorEvents.send(message)
-            if (isCreating.value) _isCreating.value = false
         }
     }
 
-    private fun runObserver() {
+    private fun checkNotificationBannerDismissedStatus() {
         viewModelScope.launch {
-            // Observe new messages
+            _isNotificationBannerDismissed.value =
-            launch {
+                secretStore.get("notification_banner_dismissed") == "true"
-                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() {
+    private fun reconnect() {
         viewModelScope.launch {
-            // Wait until the client is ready
             nostr.waitUntilInitialized()
+            nostr.reconnect()
+        }
+    }
 
-            val batch = mutableSetOf<PublicKey>()
+    private fun processIncomingEvent(event: UnsignedEvent) {
-            val timeout = 500L // 500ms timeout for batching
+        val roomId = event.roomId()
+        val existingRoom = _chatRooms.value.firstOrNull { it.id == roomId }
 
-            while (true) {
+        if (existingRoom == null) {
-                val firstKey = metadataRequestChannel.receive()
+            nostr.signer.currentUser?.let { user ->
-                batch.add(firstKey)
+                val newRoom = Room.new(event, user)
-                val lastFlushTime = Clock.System.now().toEpochMilliseconds()
+                _chatRooms.update { (it + newRoom).sortedDescending().toSet() }
+            }
+        } else {
+            updateRoomList(roomId, event)
+        }
+    }
 
-                while (batch.isNotEmpty()) {
+    private suspend fun runObserver() = coroutineScope {
-                    val nextKey = withTimeoutOrNull(timeout) {
+        // Observe new messages
-                        metadataRequestChannel.receive()
+        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)
+                }
 
-                    if (nextKey != null) {
+                _newEvents.emit(event)
-                        batch.add(nextKey)
+            }
-                    }
+        }
 
-                    val now = Clock.System.now().toEpochMilliseconds()
+        // Observe contact list updates
-                    if (batch.size >= 10 || (now - lastFlushTime) >= timeout || nextKey == null) {
+        launch {
-                        val keysToRequest = batch.toList()
+            nostr.contactListUpdates.collect { contacts ->
-                        batch.clear()
+                _contactList.value = contacts.toSet()
+            }
+        }
 
-                        nostr.fetchMetadataBatch(keysToRequest)
+        // Observe metadata updates
-                    }
+        launch {
+            nostr.metadataUpdates.collect { (pubkey, metadata) ->
+                updateMetadata(pubkey, metadata)
+            }
+        }
+
+        // Observes subscription close
+        launch {
+            nostr.subscriptionClosed.collect {
+                getChatRooms()
+                _isPartialProcessedGiftWrap.value = true
+            }
+        }
+    }
+
+    private suspend fun runMetadataBatching() = coroutineScope {
+        // 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.milliseconds) {
+                    metadataRequestChannel.receive()
+                }
+
+                // Only add the key if it's not null
+                if (nextKey != null) batch.add(nextKey)
+
+                // Get current time
+                val now = Clock.System.now().toEpochMilliseconds()
+
+                // Check if the batch is full or timeout has passed
+                if (batch.size >= 10 || (now - lastFlushTime) >= timeout || nextKey == null) {
+                    val keysToRequest = batch.toList()
+                    batch.clear()
+
+                    nostr.fetchMetadataBatch(keysToRequest)
                 }
             }
         }
@@ -201,34 +255,28 @@ class NostrViewModel(
 
     private fun login() {
         viewModelScope.launch {
-            // Get user's signer secret
+            try {
-            val secret = secretStore.get("user_signer")
+                val secret = withTimeoutOrNull(3.seconds) {
-
+                    secretStore.get("user_signer")
-            // If no secret is found, show onboarding screen
-            if (secret == null) {
-                _signerRequired.value = true
-                return@launch
-            }
-
-            // Update the empty secret state
-            _signerRequired.value = false
-
-            // Handle different signer types
-            if (secret.startsWith("nsec1")) {
-                val keys = Keys.parse(secret)
-                nostr.setSigner(keys)
-            } else if (secret.startsWith("bunker://")) {
-                try {
-                    val appKeys = getOrInitAppKeys()
-                    val bunker = NostrConnectUri.parse(secret)
-                    val timeout = Duration.parse("50s") // 50 seconds timeout
-                    val remote = NostrConnect(uri = bunker, appKeys, timeout, opts = null)
-                    nostr.setSigner(remote)
-                } catch (e: Exception) {
-                    showError("Error: ${e.message}")
                 }
-            } else {
+
-                throw IllegalArgumentException("Invalid secret format: $secret")
+                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
             }
         }
     }
@@ -242,7 +290,7 @@ class NostrViewModel(
                     // Get chat rooms
                     val rooms = nostr.getChatRooms() ?: emptySet()
                     if (rooms.isNotEmpty()) {
-                        _chatRooms.value = rooms
+                        mergeChatRooms(rooms)
                         _isPartialProcessedGiftWrap.value = true
                     }
 
@@ -250,7 +298,7 @@ class NostrViewModel(
                     nostr.getUserMetadata()
 
                     // Small delay to ensure all relays are connected
-                    delay(3000)
+                    delay(3000.milliseconds)
 
                     // Check if the relay list is empty
                     val relays = nostr.getMsgRelays(pubkey)
@@ -261,7 +309,7 @@ class NostrViewModel(
                     break
                 }
 
-                delay(500)
+                delay(500.milliseconds)
             }
         }
     }
@@ -298,6 +346,13 @@ class NostrViewModel(
         }
     }
 
+    fun dismissNotificationBanner() {
+        viewModelScope.launch {
+            secretStore.set("notification_banner_dismissed", "true")
+            _isNotificationBannerDismissed.value = true
+        }
+    }
+
     fun dismissRelayWarning() {
         _isRelayListEmpty.value = false
     }
@@ -317,104 +372,174 @@ class NostrViewModel(
         return keys
     }
 
-    fun createIdentity(
+    private suspend fun blossomUpload(file: ByteArray, contentType: String): String? {
+        try {
+            // Upload picture to Blossom
+            val blossom = BlossomClient(
+                url = "https://blossom.band",
+                client = HttpClient {
+                    install(ContentNegotiation) {
+                        json(Json {
+                            ignoreUnknownKeys = true
+                            prettyPrint = true
+                            isLenient = true
+                        })
+                    }
+                }
+            )
+
+            val descriptor = blossom.upload(
+                file = file,
+                contentType = contentType,
+                signer = nostr.signer.get()
+            )
+
+            return descriptor?.url
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+            return null
+        }
+    }
+
+    suspend fun updateProfile(
+        name: String? = null,
+        bio: String? = null,
+        picture: ByteArray? = null,
+        contentType: String? = null
+    ) {
+        _isBusy.value = true
+        try {
+            val avatarUrl = picture?.let { blossomUpload(it, contentType ?: "image/jpeg") }
+            val newMetadata = nostr.updateProfile(name, bio, avatarUrl)
+            // Update the metadata state after successfully published
+            updateMetadata(nostr.signer.currentUser!!, newMetadata)
+            // Update local state
+            _isBusy.value = false
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+        }
+    }
+
+    suspend fun createIdentity(
         name: String,
         bio: String?,
         picture: ByteArray?,
         contentType: String? = null
     ) {
-        viewModelScope.launch {
+        _isBusy.value = true
-            try {
-                val keys = Keys.generate()
-                val secret = keys.secretKey().toBech32()
-                var avatarUrl = ""
 
-                // Set loading state
+        val keys = Keys.generate()
-                _isCreating.value = true
+        val secret = keys.secretKey().toBech32()
 
-                // Upload picture to Blossom
+        try {
-                if (picture != null) {
+            val avatarUrl = picture?.let { blossomUpload(it, contentType ?: "image/jpeg") }
-                    val blossom = BlossomClient(
+            // Create identity
-                        url = "https://blossom.band",
+            nostr.createIdentity(keys = keys, name = name, bio, picture = avatarUrl)
-                        client = HttpClient {
+            // Persist the secret in the secret storage
-                            install(ContentNegotiation) {
+            secretStore.set("user_signer", secret)
-                                json(Json {
+            // Update local states
-                                    ignoreUnknownKeys = true
+            _isBusy.value = false
-                                    prettyPrint = true
+            _signerRequired.value = false
-                                    isLenient = true
+        } catch (e: Exception) {
-                                })
+            showError("Error: ${e.message}")
-                            }
+        }
-                        }
+    }
-                    )
 
-                    val descriptor = blossom.upload(
+    private suspend fun createSigner(secret: String): AsyncNostrSigner {
-                        file = picture,
+        return when {
-                        contentType = contentType,
+            secret.startsWith("nsec1") -> Keys.parse(secret)
-                        signer = keys
-                    )
 
-                    avatarUrl = descriptor?.url ?: ""
+            secret.startsWith("bunker://") -> {
-                }
+                val appKeys = getOrInitAppKeys()
-
+                val bunker = NostrConnectUri.parse(secret)
-                // Create identity
+                val timeout = 50.seconds // or Duration.parse("50s")
-                nostr.createIdentity(keys = keys, name = name, bio, picture = avatarUrl)
+                NostrConnect(uri = bunker, appKeys, timeout, null)
-
-                // 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}")
             }
+
+            secret.startsWith("nip55://") -> {
+                val handler = externalSignerHandler
+                    ?: throw IllegalStateException("External signer not available on this platform")
+
+                // Format: nip55://packageName/hexPubkey
+                val parts = secret.removePrefix("nip55://").split("/", limit = 2)
+                val packageName = parts[0]
+                val pubkey = PublicKey.parse(parts[1])
+
+                handler.setPackageName(packageName)
+                ExternalSignerProxy(handler, pubkey)
+            }
+
+            else -> throw IllegalArgumentException("Invalid secret format")
         }
     }
 
     suspend fun verifyIdentity(secret: String): PublicKey? {
-        if (secret.startsWith("nsec1")) {
+        try {
-            val keys = Keys.parse(secret)
+            val signer = createSigner(secret)
-            return keys.publicKey()
+            if (secret.startsWith("bunker://")) {
-        } else if (secret.startsWith("bunker://")) {
+                showError("Please approve the connection.")
-            val appKeys = getOrInitAppKeys()
+            }
-            val bunker = NostrConnectUri.parse(secret)
+            return signer.getPublicKeyAsync()
-            val timeout = Duration.parse("50s") // 50 seconds timeout
+        } catch (e: Exception) {
-            val remote = NostrConnect(uri = bunker, appKeys, timeout, null)
+            showError("Error: ${e.message}")
-
+            return null
-            // Show toast to ask user to approve the connection
-            showError("Please approve the connection.")
-
-            return remote.getPublicKeyAsync()
-        } else {
-            throw IllegalArgumentException("Invalid secret: $secret")
         }
     }
 
-    fun importIdentity(secret: String) {
+    suspend fun importIdentity(secret: String) {
-        viewModelScope.launch {
+        _isBusy.value = true
-            if (secret.startsWith("nsec1")) {
+        try {
-                val keys = Keys.parse(secret)
+            val signer = createSigner(secret)
-                nostr.setSigner(keys)
+            // Update signer
-                secretStore.set("user_signer", secret)
+            nostr.setSigner(signer)
-                // Set an empty secret state
+            // Persist the secret in the secret storage
-                _signerRequired.value = false
+            secretStore.set("user_signer", secret)
-            } else if (secret.startsWith("bunker://")) {
+            // Update local states
-                try {
+            _signerRequired.value = false
-                    val appKeys = getOrInitAppKeys()
+            _isBusy.value = false
-                    val bunker = NostrConnectUri.parse(secret)
+        } catch (e: Exception) {
-                    val timeout = Duration.parse("50s") // 50 seconds timeout
+            showError("Error: ${e.message}")
-                    val remote = NostrConnect(uri = bunker, appKeys, timeout, null)
-                    nostr.setSigner(remote)
-                    secretStore.set("user_signer", secret)
-                    _signerRequired.value = false
-                } catch (e: Exception) {
-                    showError("Error: ${e.message}")
-                }
-            } else {
-                showError("Please enter a valid Secret or Bunker URI.")
-            }
         }
     }
 
+    suspend fun connectExternalSigner() {
+        val handler = externalSignerHandler ?: throw IllegalStateException("Signer not available")
+        _isBusy.value = true
+        try {
+            val permissions = SignerPermissions.toJson(
+                listOf(
+                    SignerPermissions.signEvent(0),
+                    SignerPermissions.signEvent(3),
+                    SignerPermissions.signEvent(10000),
+                    SignerPermissions.signEvent(10050),
+                    SignerPermissions.signEvent(10063),
+                    SignerPermissions.signEvent(22242),
+                    SignerPermissions.signEvent(30030),
+                    SignerPermissions.signEvent(30315),
+                    SignerPermissions.nip44Encrypt(),
+                    SignerPermissions.nip44Decrypt(),
+                )
+            )
+
+            val result = handler.getPublicKey(permissions) ?: throw Exception("Rejected")
+            val signer = ExternalSignerProxy(handler, result.pubkey)
+
+            // Update signer
+            nostr.setSigner(signer)
+            // Store the signer in the secret storage
+            secretStore.set("user_signer", "nip55://${result.packageName}/${result.pubkey.toHex()}")
+            // Update local states
+            _signerRequired.value = false
+            _isBusy.value = false
+        } catch (e: Exception) {
+            throw Exception("Notice: ${e.message}")
+        }
+    }
+
+    fun isExternalSignerAvailable(): Boolean {
+        return externalSignerHandler?.isAvailable() == true
+    }
+
     suspend fun useDefaultMsgRelayList() {
         try {
             val defaultRelays = nostr.getDefaultMsgRelayList()
@@ -450,10 +575,9 @@ class NostrViewModel(
             val currentUser = nostr.signer.currentUser!!
 
             // Construct the rumor event
-            val rumor = EventBuilder
+            val rumor = EventBuilder(Kind.fromStd(KindStandard.PRIVATE_DIRECT_MESSAGE), "")
-                .privateMsgRumor(to.first(), "")
                 .tags(to.map { Tag.publicKey(it) })
-                .build(currentUser)
+                .finalizeUnsigned(currentUser)
 
             // Check if the room already exists
             val id = rumor.roomId()
@@ -469,7 +593,7 @@ class NostrViewModel(
 
             // Update the chat rooms state
             _chatRooms.update { currentRooms ->
-                currentRooms + room
+                (currentRooms + room).sortedDescending().toSet()
             }
 
             return room.id
@@ -478,26 +602,33 @@ class NostrViewModel(
         }
     }
 
-    fun getChatRoom(id: Long): Room {
+    fun getChatRoom(id: Long): Room? {
         return chatRooms.value.firstOrNull { it.id == id }
-            ?: throw IllegalArgumentException("Room not found")
+    }
+
+    private fun mergeChatRooms(rooms: Set<Room>) {
+        _chatRooms.update { currentRooms ->
+            val merged = currentRooms.associateBy { it.id }.toMutableMap()
+            // Add or update rooms from the database
+            rooms.forEach { room ->
+                merged[room.id] = room
+            }
+            // Return as a sorted set to maintain UI consistency
+            merged.values.sortedDescending().toSet()
+        }
     }
 
     fun getChatRooms() {
         viewModelScope.launch {
             val rooms = nostr.getChatRooms() ?: emptySet()
-            _chatRooms.update { currentRooms ->
+            mergeChatRooms(rooms)
-                val virtualRooms = currentRooms.filter { local ->
-                    rooms.none { db -> db.id == local.id }
-                }
-                rooms + virtualRooms
-            }
         }
     }
 
     suspend fun refreshChatRooms() {
         try {
-            _chatRooms.value = nostr.getChatRooms() ?: emptySet()
+            val rooms = nostr.getChatRooms() ?: emptySet()
+            mergeChatRooms(rooms)
         } catch (e: Exception) {
             showError("Error: ${e.message}")
         }
@@ -513,15 +644,16 @@ class NostrViewModel(
         return emptyList()
     }
 
-    suspend fun chatRoomConnect(roomId: Long): Map<PublicKey, List<RelayUrl>> {
+    fun chatRoomConnect(roomId: Long) {
-        val room = getChatRoom(roomId)
+        viewModelScope.launch {
-        val members = room.members
+            try {
+                val room = getChatRoom(roomId) ?: throw IllegalArgumentException("Room not found")
+                val members = room.members
 
-        return runCatching {
+                nostr.chatRoomConnect(members.toList())
-            nostr.chatRoomConnect(members.toList())
+            } catch (e: Exception) {
-        }.getOrElse { e ->
+                showError("Error: ${e.message}")
-            showError("Error: ${e.message}")
+            }
-            members.associateWith { emptyList<RelayUrl>() }
         }
     }
 
@@ -531,9 +663,9 @@ class NostrViewModel(
         }
         viewModelScope.launch {
             try {
-                val room = getChatRoom(roomId)
+                val room = getChatRoom(roomId) ?: throw IllegalArgumentException("Room not found")
                 nostr.sendMessage(
-                    to = room.members.toList(),
+                    to = room.members,
                     content = message,
                     subject = room.subject,
                     replies = replies,

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

@@ -6,7 +6,6 @@ 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
@@ -37,14 +36,17 @@ data class Room(
         fun new(rumor: UnsignedEvent, userPubkey: PublicKey): Room {
             val id = rumor.roomId()
             val createdAt = rumor.createdAt()
-            val subject = rumor.tags().find(TagKind.Subject)?.content()
+            val subject = rumor.tags().toVec().find { it.kind() == "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
-            pubkeys.remove(userPubkey)
+            if (pubkeys.size > 1 && pubkeys.contains(userPubkey)) {
+                pubkeys.remove(userPubkey)
+            }
 
             // Create a new Room instance
             return Room(

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

@@ -2,31 +2,42 @@ package su.reya.coop
 
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
+import kotlinx.coroutines.withTimeoutOrNull
 import rust.nostr.sdk.AsyncNostrSigner
 import rust.nostr.sdk.Event
 import rust.nostr.sdk.PublicKey
 import rust.nostr.sdk.UnsignedEvent
+import kotlin.concurrent.Volatile
+import kotlin.time.Duration.Companion.seconds
 
 class UniversalSigner(initialSigner: AsyncNostrSigner) : AsyncNostrSigner {
     private val mutex = Mutex()
+
+    @Volatile
     private var signer: AsyncNostrSigner = initialSigner
 
+    @Volatile
     var currentUser: PublicKey? = null
         private set
 
     /**
      * Get the current signer.
      */
-    suspend fun get(): AsyncNostrSigner = mutex.withLock {
+    fun get(): AsyncNostrSigner = signer
-        signer
-    }
 
     /**
      * Switch to a new signer.
      */
     suspend fun switch(newSigner: AsyncNostrSigner) = mutex.withLock {
+        val pubkey = try {
+            withTimeoutOrNull(20.seconds) {
+                newSigner.getPublicKeyAsync()
+            }
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to get public key from signer", e)
+        }
         signer = newSigner
-        currentUser = newSigner.getPublicKeyAsync()
+        currentUser = pubkey
     }
 
     override suspend fun getPublicKeyAsync(): PublicKey? {

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

@@ -75,7 +75,7 @@ class BlossomClient(
         signer: AsyncNostrSigner,
         authz: BlossomAuthorization
     ): HeaderValue {
-        val authEvent = EventBuilder.blossomAuth(authz).signAsync(signer)
+        val authEvent = EventBuilder.blossomAuth(authz).finalizeAsync(signer)
         val encodedAuth = Base64.encode(authEvent.asJson().toByteArray())
         val value = "Nostr $encodedAuth"
         return HeaderValue(value)