move msg relay sheet to home screen

Reviewed-on: #18

composeApp/build.gradle.kts

@@ -24,7 +24,7 @@ kotlin {
             implementation(libs.jetbrains.navigation3.ui)
             implementation(libs.jetbrains.lifecycle.viewmodelNavigation3)
             implementation(libs.androidx.core.splashscreen)
-            implementation("su.reya:nostr-sdk-kmp:0.2.3")
+            implementation("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("io.github.kalinjul.easyqrscan:scanner:0.7.0")
@@ -69,7 +69,7 @@ android {
         minSdk = libs.versions.android.minSdk.get().toInt()
         targetSdk = libs.versions.android.targetSdk.get().toInt()
         versionCode = 1
-        versionName = "0.1.6"
+        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"

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

@@ -2,26 +2,15 @@ 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
@@ -31,21 +20,15 @@ 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.compose.ui.text.font.FontWeight
-import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.unit.dp
 import androidx.core.util.Consumer
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.viewmodel.navigation3.rememberViewModelStoreNavEntryDecorator
 import androidx.navigation3.runtime.NavBackStack
 import androidx.navigation3.runtime.NavKey
@@ -53,7 +36,6 @@ import androidx.navigation3.runtime.entryProvider
 import androidx.navigation3.runtime.rememberNavBackStack
 import androidx.navigation3.runtime.rememberSaveableStateHolderNavEntryDecorator
 import androidx.navigation3.ui.NavDisplay
-import kotlinx.coroutines.launch
 import su.reya.coop.screens.ChatScreen
 import su.reya.coop.screens.HomeScreen
 import su.reya.coop.screens.ImportScreen
@@ -64,6 +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")
@@ -92,8 +75,7 @@ fun App(viewModel: NostrViewModel) {
     val navigator = remember(backStack) { Navigator(backStack) }
     val qrScanResult = remember { QrScanResult() }
 
-    val signerRequired by viewModel.signerRequired.collectAsState(initial = null)
-    val isRelayListEmpty by viewModel.isRelayListEmpty.collectAsState()
+    val signerRequired by viewModel.signerRequired.collectAsStateWithLifecycle()
 
     // Snackbar
     val snackbarHostState = remember { SnackbarHostState() }
@@ -104,7 +86,7 @@ fun App(viewModel: NostrViewModel) {
     // 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 (isSystemInDarkTheme()) dynamicDarkColorScheme(context) else dynamicLightColorScheme(
                 context
             )
@@ -203,6 +185,9 @@ fun App(viewModel: NostrViewModel) {
                     entry<Screen.Profile> { key ->
                         ProfileScreen(pubkey = key.pubkey)
                     }
+                    entry<Screen.UpdateProfile> {
+                        UpdateProfileScreen()
+                    }
                     entry<Screen.Scan> {
                         ScanScreen()
                     }
@@ -214,61 +199,6 @@ fun App(viewModel: NostrViewModel) {
                     }
                 }
             )
-
-            // 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,
-                            )
-                        }
-                    }
-                }
-            }
         }
     }
 }

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

@@ -1,24 +1,32 @@
 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
             }
         }
     }
@@ -26,10 +34,9 @@ class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         Thread.setDefaultUncaughtExceptionHandler { thread, throwable ->
             throwable.printStackTrace()
-            android.util.Log.e(
-                "CoopCrash",
-                "Uncaught exception in thread ${thread.name}",
-                throwable
+
+            Log.e(
+                "CoopCrash", "Uncaught exception in thread ${thread.name}", throwable
             )
 
             // Start the Crash Activity
@@ -40,28 +47,33 @@ class MainActivity : ComponentActivity() {
             startActivity(intent)
 
             // Exit
-            android.os.Process.killProcess(android.os.Process.myPid())
+            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)
-
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            startForegroundService(serviceIntent)
-        } else {
-            startService(serviceIntent)
-        }
+        startForegroundService(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

@@ -29,6 +29,9 @@ sealed interface Screen : NavKey {
     @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

@@ -10,13 +10,13 @@ import android.content.pm.ServiceInfo
 import android.os.Build
 import android.os.IBinder
 import android.util.Log
-import androidx.annotation.RequiresApi
 import androidx.core.app.NotificationCompat
 import androidx.core.net.toUri
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.ProcessLifecycleOwner
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
 import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.cancel
 import kotlinx.coroutines.launch
@@ -25,6 +25,7 @@ import java.io.File
 class NostrForegroundService : Service() {
     private val serviceScope = CoroutineScope(Dispatchers.IO + SupervisorJob())
     private val nostr by lazy { NostrManager.instance }
+    private var notificationJob: Job? = null
 
     override fun onBind(intent: Intent?): IBinder? = null
 
@@ -46,7 +47,9 @@ class NostrForegroundService : Service() {
     }
 
     override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
-        serviceScope.launch {
+        if (notificationJob?.isActive == true) return START_STICKY
+
+        notificationJob = serviceScope.launch {
             try {
                 Log.d("Coop", "Starting Nostr in background")
 
@@ -55,7 +58,11 @@ class NostrForegroundService : Service() {
                 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
@@ -82,10 +89,10 @@ class NostrForegroundService : Service() {
                 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)
 

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

@@ -39,6 +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
@@ -50,10 +51,10 @@ 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.LocalNavigator
@@ -65,7 +66,6 @@ import su.reya.coop.roomId
 import su.reya.coop.shared.Avatar
 import su.reya.coop.shared.displayNameFlow
 import su.reya.coop.shared.pictureFlow
-import su.reya.coop.short
 
 @Composable
 fun ChatScreen(id: Long) {
@@ -73,28 +73,35 @@ fun ChatScreen(id: Long) {
     val navigator = LocalNavigator.current
     val viewModel = LocalNostrViewModel.current
 
-    val listState = rememberLazyListState()
-    val chatRooms by viewModel.chatRooms.collectAsState()
-    val room = remember(chatRooms, id) { chatRooms.firstOrNull { it.id == id } }
+    // Get chat room by ID
+    val chatRooms by viewModel.chatRooms.collectAsStateWithLifecycle()
+    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 picture by remember(room) { room.pictureFlow(viewModel) }.collectAsState(null)
+    val displayName by remember(room) { room!!.displayNameFlow(viewModel) }.collectAsState("Loading...")
+    val picture by remember(room) { room!!.pictureFlow(viewModel) }.collectAsState(null)
 
     var text by remember { mutableStateOf("") }
     var loading by remember { mutableStateOf(true) }
     var newOtherMessages by remember { mutableIntStateOf(0) }
 
+    val listState = rememberLazyListState()
     val messages = remember { mutableStateListOf<UnsignedEvent>() }
+
     val groupedMessages = remember(messages.toList()) {
         messages.groupBy { it.createdAt().formatAsGroupHeader() }
     }
@@ -103,23 +110,14 @@ fun ChatScreen(id: Long) {
         // 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
 
@@ -151,7 +149,7 @@ fun ChatScreen(id: Long) {
                     Row(
                         verticalAlignment = Alignment.CenterVertically,
                         modifier = Modifier.clickable {
-                            room.members.firstOrNull()?.let { pubkey ->
+                            room!!.members.firstOrNull()?.let { pubkey ->
                                 navigator.navigate(Screen.Profile(pubkey.toBech32()))
                             }
                         }

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

@@ -13,8 +13,10 @@ 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
@@ -72,10 +74,13 @@ 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
@@ -108,8 +113,9 @@ fun HomeScreen() {
     val currentUser = viewModel.currentUser() ?: return
     val currentUserProfile = viewModel.getMetadata(currentUser) ?: return
 
-    val userProfile by currentUserProfile.collectAsState(initial = null)
-    val chatRooms by viewModel.chatRooms.collectAsState(initial = emptyList())
+    val userProfile by currentUserProfile.collectAsStateWithLifecycle()
+    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()
 
@@ -447,6 +453,77 @@ fun HomeScreen() {
             }
         },
     )
+
+    // 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)
@@ -501,9 +578,10 @@ fun BottomMenuList(
     val viewModel = LocalNostrViewModel.current
 
     val defaultMenuList = listOf(
-        "Relay Management" to { navigator.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

@@ -78,7 +78,7 @@ fun ImportScreen() {
 
     val scope = rememberCoroutineScope()
 
-    val isLoggedIn by viewModel.isLoggedIn.collectAsStateWithLifecycle(false)
+    val isBusy by viewModel.isBusy.collectAsStateWithLifecycle(false)
     var secret by remember { mutableStateOf("") }
     var pubkey by remember { mutableStateOf<PublicKey?>(null) }
 
@@ -90,7 +90,7 @@ fun ImportScreen() {
     val profile = metadata?.asRecord()
     val displayName = profile?.displayName ?: profile?.name ?: pubkey?.short() ?: "Unknown"
     val picture = profile?.picture
-    
+
     LaunchedEffect(qrScanResult.content) {
         qrScanResult.content?.let { result ->
             runCatching {
@@ -205,7 +205,7 @@ fun ImportScreen() {
                             BasicTextField(
                                 value = secret,
                                 onValueChange = { secret = it },
-                                enabled = !isLoggedIn,
+                                enabled = !isBusy,
                                 modifier = Modifier.fillMaxWidth(),
                                 maxLines = 4,
                                 keyboardOptions = KeyboardOptions(
@@ -258,9 +258,9 @@ fun ImportScreen() {
                             modifier = Modifier
                                 .fillMaxWidth()
                                 .height(ButtonDefaults.MediumContainerHeight),
-                            enabled = secret.isNotBlank() && !isLoggedIn,
+                            enabled = secret.isNotBlank() && !isBusy,
                         ) {
-                            if (isLoggedIn) {
+                            if (isBusy) {
                                 LoadingIndicator()
                             } else {
                                 Text(

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

@@ -1,307 +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.remember
 import androidx.compose.runtime.rememberCoroutineScope
-import androidx.compose.runtime.setValue
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.draw.clip
-import androidx.compose.ui.graphics.SolidColor
-import androidx.compose.ui.layout.ContentScale
-import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.platform.LocalFocusManager
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.text.input.ImeAction
-import androidx.compose.ui.unit.dp
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
-import coil3.compose.AsyncImage
-import coop.composeapp.generated.resources.Res
-import coop.composeapp.generated.resources.ic_arrow_back
-import coop.composeapp.generated.resources.ic_plus
-import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
-import kotlinx.coroutines.withContext
-import org.jetbrains.compose.resources.painterResource
 import su.reya.coop.LocalNavigator
 import su.reya.coop.LocalNostrViewModel
-import su.reya.coop.LocalSnackbarHostState
 import su.reya.coop.Screen
+import su.reya.coop.shared.ProfileEditor
 
-@OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
 fun NewIdentityScreen() {
-    val context = LocalContext.current
-    val snackbarHostState = LocalSnackbarHostState.current
-    val focusManager = LocalFocusManager.current
-    val navigator = LocalNavigator.current
     val viewModel = LocalNostrViewModel.current
-
-    val isLoggedIn by viewModel.isLoggedIn.collectAsStateWithLifecycle(false)
-    var name by remember { mutableStateOf("") }
-    var bio by remember { mutableStateOf("") }
-    var picture by remember { mutableStateOf<Uri?>(null) }
-
+    val navigator = LocalNavigator.current
     val scope = rememberCoroutineScope()
+    val isBusy by viewModel.isBusy.collectAsStateWithLifecycle(false)
 
-    val launcher = rememberLauncherForActivityResult(
-        contract = ActivityResultContracts.GetContent()
-    ) { uri: Uri? ->
-        picture = uri
-    }
-
-    Scaffold(
-        containerColor = MaterialTheme.colorScheme.surfaceContainer,
-        snackbarHost = { SnackbarHost(snackbarHostState) },
-        topBar = {
-            TopAppBar(
-                title = {
-                    Text(
-                        text = "Create a new identity",
-                        style = MaterialTheme.typography.titleMediumEmphasized
-                    )
-                },
-                navigationIcon = {
-                    IconButton(onClick = { navigator.goBack() }) {
-                        Icon(
-                            painter = painterResource(Res.drawable.ic_arrow_back),
-                            contentDescription = "Back"
-                        )
-                    }
-                },
-                colors = TopAppBarDefaults.topAppBarColors(
-                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
-                )
-            )
-        },
-        content = { innerPadding ->
-            Column(
-                modifier = Modifier
-                    .fillMaxSize()
-                    .padding(top = innerPadding.calculateTopPadding())
-                    .imePadding(),
-            ) {
-                Box(
-                    modifier = Modifier
-                        .fillMaxWidth()
-                        .weight(1f),
-                    contentAlignment = Alignment.Center
-                ) {
-                    Box(
-                        modifier = Modifier
-                            .size(120.dp)
-                            .clip(MaterialShapes.Pentagon.toShape())
-                            .clickable { launcher.launch("image/*") },
-                        contentAlignment = Alignment.Center
-                    ) {
-                        if (picture != null) {
-                            AsyncImage(
-                                model = picture,
-                                contentDescription = "Profile picture",
-                                modifier = Modifier.fillMaxSize(),
-                                contentScale = ContentScale.Crop
-                            )
-                        } else {
-                            Surface(
-                                color = MaterialTheme.colorScheme.surfaceVariant,
-                                modifier = Modifier.fillMaxSize()
-
-                            ) {
-                                Box(contentAlignment = Alignment.Center) {
-                                    Icon(
-                                        painter = painterResource(Res.drawable.ic_plus),
-                                        contentDescription = "Pick avatar",
-                                        modifier = Modifier.size(48.dp),
-                                        tint = MaterialTheme.colorScheme.onSurfaceVariant
-                                    )
-                                }
-                            }
-                        }
-                    }
-                }
-                Surface(
-                    modifier = Modifier
-                        .fillMaxWidth()
-                        .weight(1f, fill = true),
-                    color = MaterialTheme.colorScheme.surface,
-                    shape = RoundedCornerShape(topStart = 24.dp, topEnd = 24.dp),
-                ) {
-                    Column(
-                        modifier = Modifier
-                            .fillMaxSize()
-                            .padding(24.dp)
-                    ) {
-                        Column(
-                            modifier = Modifier
-                                .weight(1f)
-                                .verticalScroll(rememberScrollState()),
-                            verticalArrangement = Arrangement.spacedBy(16.dp)
-                        ) {
-                            Text(
-                                text = "What others should call you?",
-                                style = MaterialTheme.typography.titleLargeEmphasized.copy(
-                                    fontWeight = FontWeight.SemiBold,
-                                ),
-                            )
-                            BasicTextField(
-                                value = name,
-                                onValueChange = { name = it },
-                                enabled = !isLoggedIn,
-                                modifier = Modifier.fillMaxWidth(),
-                                singleLine = true,
-                                keyboardOptions = KeyboardOptions(
-                                    imeAction = ImeAction.Done,
-                                ),
-                                keyboardActions = KeyboardActions(
-                                    onDone = {
-                                        focusManager.clearFocus()
-                                    }
-                                ),
-                                textStyle = MaterialTheme.typography.headlineLargeEmphasized.copy(
-                                    color = MaterialTheme.colorScheme.tertiaryFixedDim,
-                                    fontWeight = FontWeight.SemiBold,
-                                ),
-                                cursorBrush = SolidColor(MaterialTheme.colorScheme.tertiaryContainer),
-                                decorationBox = { innerTextField ->
-                                    Box(contentAlignment = Alignment.CenterStart) {
-                                        if (name.isEmpty()) {
-                                            Text(
-                                                "Alice",
-                                                style = MaterialTheme.typography.headlineLargeEmphasized.copy(
-                                                    fontWeight = FontWeight.SemiBold,
-                                                ),
-                                                color = MaterialTheme.colorScheme.onSurfaceVariant.copy(
-                                                    alpha = 0.5f
-                                                )
-                                            )
-                                        }
-                                        innerTextField()
-                                    }
-                                }
-                            )
-                            Spacer(modifier = Modifier.size(8.dp))
-                            Text(
-                                text = "Your bio (optional)",
-                                style = MaterialTheme.typography.titleLargeEmphasized.copy(
-                                    fontWeight = FontWeight.SemiBold,
-                                ),
-                            )
-                            BasicTextField(
-                                value = bio,
-                                onValueChange = { bio = it },
-                                enabled = !isLoggedIn,
-                                modifier = Modifier.fillMaxWidth(),
-                                maxLines = 3,
-                                keyboardOptions = KeyboardOptions(
-                                    imeAction = ImeAction.Done,
-                                ),
-                                keyboardActions = KeyboardActions(
-                                    onDone = {
-                                        focusManager.clearFocus()
-                                    }
-                                ),
-                                textStyle = MaterialTheme.typography.bodyLarge.copy(
-                                    color = MaterialTheme.colorScheme.primaryFixed,
-                                    fontWeight = FontWeight.SemiBold,
-                                ),
-                                cursorBrush = SolidColor(MaterialTheme.colorScheme.secondary),
-                                decorationBox = { innerTextField ->
-                                    Box(contentAlignment = Alignment.CenterStart) {
-                                        if (bio.isEmpty()) {
-                                            Text(
-                                                "I love cat",
-                                                style = MaterialTheme.typography.headlineLargeEmphasized.copy(
-                                                    fontWeight = FontWeight.SemiBold,
-                                                ),
-                                                color = MaterialTheme.colorScheme.onSurfaceVariant.copy(
-                                                    alpha = 0.5f
-                                                )
-                                            )
-                                        }
-                                        innerTextField()
-                                    }
-                                }
-                            )
-                        }
-                        Spacer(modifier = Modifier.size(16.dp))
-                        Button(
-                            onClick = {
-                                scope.launch {
-                                    try {
-                                        val imageBytes = withContext(Dispatchers.IO) {
-                                            picture?.let { uri ->
-                                                context.contentResolver.openInputStream(
-                                                    uri
-                                                )?.use { input -> input.readBytes() }
-                                            }
-                                        }
-
-                                        val contentType =
-                                            picture?.let { context.contentResolver.getType(it) }
-
-                                        // Create the identity
-                                        viewModel.createIdentity(name, bio, imageBytes, contentType)
-
-                                        // Navigate to the home screen if successful
-                                        navigator.navigate(Screen.Home)
-                                    } catch (e: Exception) {
-                                        // Error is handled by viewModel.showError inside createIdentity
-                                    }
-                                }
-                            },
-                            modifier = Modifier
-                                .fillMaxWidth()
-                                .height(ButtonDefaults.MediumContainerHeight),
-                            enabled = name.isNotBlank() && !isLoggedIn,
-                        ) {
-                            if (isLoggedIn) {
-                                LoadingIndicator()
-                            } else {
-                                Text(
-                                    text = "Continue",
-                                    style = MaterialTheme.typography.titleMediumEmphasized,
-                                )
-                            }
-                        }
-                    }
-                }
+    ProfileEditor(
+        title = "Create a new identity",
+        buttonLabel = "Continue",
+        isBusy = isBusy,
+        onBack = { navigator.goBack() },
+        onConfirm = { name, bio, bytes, type ->
+            scope.launch {
+                viewModel.createIdentity(name, bio, bytes, type)
+                navigator.navigate(Screen.Home)
             }
         }
     )

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
@@ -34,10 +40,13 @@ 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
@@ -45,11 +54,15 @@ import su.reya.coop.shared.getExpressiveFontFamily
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
 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
@@ -142,7 +155,44 @@ fun OnboardingScreen() {
                                 )
                             }
                             Spacer(modifier = Modifier.size(8.dp))
-                            OutlinedButton(
+                            FilledTonalButton(
+                                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()

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

@@ -176,7 +176,7 @@ fun ProfileScreen(pubkey: String) {
                             }
                             Text(
                                 text = "Message",
-                                style = MaterialTheme.typography.labelSmall
+                                style = MaterialTheme.typography.labelMedium
                             )
                         }
                         Column(

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,
+                            )
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

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/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

@@ -38,27 +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()
 
@@ -99,34 +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 the database and gossip instance
+            // Initialize configurations for nostr client
             val lmdb = NostrDatabase.lmdb(dbPath)
             val gossip = NostrGossip.inMemory()
-
-            // Set the idle timeout for relays
+            val authenticator = SignerAuthenticator(signer)
             val idleTimeout = Duration.parse("5m")
 
             client =
                 ClientBuilder()
-                    .signer(signer)
+                    .authenticator(authenticator)
                     .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()
 
@@ -141,24 +151,43 @@ class Nostr {
     }
 
     suspend fun connectBootstrapRelays() {
-        // Bootstrap relays
-        client?.addRelay(RelayUrl.parse("wss://relay.primal.net"))
-        client?.addRelay(RelayUrl.parse("wss://user.kindpag.es"))
-        client?.addRelay(RelayUrl.parse("wss://purplepag.es"))
+        NostrManager.BOOTSTRAP_RELAYS.forEach { url ->
+            client?.addRelay(RelayUrl.parse(url))
+        }
+        NostrManager.INDEXER_RELAY.forEach { url ->
+            client?.addRelay(
+                url = RelayUrl.parse(url),
+                capabilities = RelayCapabilities.gossip()
+            )
+        }
+        // Connect to all bootstrap relays
+        client?.connect()
+    }
 
-
-        // Indexer relay for NIP-65 discovery
-        client?.addRelay(
-            url = RelayUrl.parse("wss://indexer.coracle.social"),
-            capabilities = RelayCapabilities.gossip()
-        )
-
-        // Connect to all bootstrap relays and wait for all connections to be established
-        client?.connect(Duration.parse("2s"))
+    suspend fun reconnect() {
+        NostrManager.ALL_RELAYS.forEach { url ->
+            try {
+                client?.relay(RelayUrl.parse(url)).let { relay ->
+                    if (relay != null) {
+                        if (relay.status() != RelayStatus.CONNECTED) {
+                            relay.connect()
+                        }
+                    }
+                }
+            } 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() {
@@ -358,16 +387,15 @@ class Nostr {
             val currentUser =
                 signer.currentUser ?: throw IllegalStateException("User not signed in")
 
-            // Ensure the rumor ID is set
-            val rumor = rumor.ensureId()
+            // Construct the room id
             val roomId = rumor.roomId()
 
             // Construct reference tags
             val tags = listOf(
                 Tag.identifier(giftId.toHex()),
                 Tag.event(rumor.id()!!),
-                Tag.reference(roomId.toString()),
-                Tag.custom(TagKind.Unknown("k"), listOf("14"))
+                Tag.custom("a", listOf(roomId.toString())),
+                Tag.custom("k", listOf("14"))
             )
 
             // Set event kind
@@ -375,8 +403,8 @@ class Nostr {
 
             val event = EventBuilder(kind, rumor.asJson())
                 .tags(tags)
-                .build(currentUser)
-                .signWithKeys(Keys.generate())
+                .finalizeUnsigned(currentUser)
+                .signAsync(Keys.generate())
 
             client?.database()?.saveEvent(event)
         } catch (e: Exception) {
@@ -425,9 +453,10 @@ class Nostr {
             client?.addRelay(
                 url = relay,
                 capabilities =
-                    if (metadata == RelayMetadata.READ) RelayCapabilities.read()
-                    else if (metadata == RelayMetadata.WRITE) RelayCapabilities.write()
-                    else RelayCapabilities.none()
+                    when (metadata) {
+                        RelayMetadata.READ -> RelayCapabilities.read()
+                        RelayMetadata.WRITE -> RelayCapabilities.write()
+                    }
             )
             client?.connectRelay(relay)
         }
@@ -438,7 +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"),
         )
 
@@ -454,7 +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,
@@ -465,7 +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,
@@ -476,7 +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,
@@ -486,8 +515,8 @@ class Nostr {
 
         // Send contact list event
         val defaultContact =
-            listOf(Contact(publicKey = PublicKey.parse("npub1j3rz3ndl902lya6ywxvy5c983lxs8mpukqnx4pa4lt5wrykwl5ys7wpw3x")))
-        val contactListEvent = EventBuilder.contactList(defaultContact).signWithKeys(keys)
+            Contact(PublicKey.parse("npub1j3rz3ndl902lya6ywxvy5c983lxs8mpukqnx4pa4lt5wrykwl5ys7wpw3x"))
+        val contactListEvent = EventBuilder.contactList(listOf(defaultContact)).finalizeAsync(keys)
 
         client?.sendEvent(
             event = contactListEvent,
@@ -498,6 +527,48 @@ 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(100u)
@@ -536,7 +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),
                     )
                 )
@@ -549,7 +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,
@@ -652,33 +722,25 @@ class Nostr {
         }
     }
 
-    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)
         }
@@ -688,10 +750,8 @@ class Nostr {
         try {
             val urls = nip17ExtractRelayList(event);
             for (url in urls) {
-                if (client?.relay(url) == null) {
-                    client?.addRelay(url)
-                    client?.connectRelay(url)
-                }
+                client?.addRelay(url, RelayCapabilities.gossip())
+                client?.connectRelay(url)
             }
         } catch (e: Exception) {
             throw IllegalStateException("Failed to connect to relays: ${e.message}", e)
@@ -713,7 +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
@@ -731,13 +791,9 @@ class Nostr {
             for (receiver in setOf(currentUser) + to) {
                 // Construct the rumor event
                 // NEVER SIGN this event with the current user signer
-                val rumor = EventBuilder
-                    .privateMsgRumor(receiver = receiver, message = content)
+                val rumor = EventBuilder(Kind.fromStd(KindStandard.PRIVATE_DIRECT_MESSAGE), content)
                     .tags(tags)
-                    .allowSelfTagging()
-                    .build(currentUser)
-                    // Ensure the event ID is set
-                    .ensureId()
+                    .finalizeUnsigned(currentUser)
 
                 // Emit the rumor to the chat screen
                 if (receiver == currentUser) {
@@ -745,12 +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"))
                     )
                 )
 
@@ -811,13 +867,12 @@ class Nostr {
 
             val kinds = listOf(Kind.fromStd(KindStandard.METADATA))
             val filter = Filter().kinds(kinds).search(query).limit(10u)
-            val target =
-                ReqTarget.manual(mapOf(RelayUrl.parse("wss://antiprimal.net") to listOf(filter)))
+            val target = ReqTarget.manual(mapOf(searchRelay 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
@@ -23,6 +26,8 @@ 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
@@ -39,7 +44,8 @@ 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()
@@ -47,14 +53,8 @@ class NostrViewModel(
     private val _signerRequired = MutableStateFlow<Boolean?>(null)
     val signerRequired = _signerRequired.asStateFlow()
 
-    private val _isLoggedIn = MutableStateFlow(false)
-    val isLoggedIn = _isLoggedIn.asStateFlow()
-
-    private val _chatRooms = MutableStateFlow<Set<Room>>(emptySet())
-    val chatRooms = _chatRooms.asStateFlow()
-
-    private val _contactList = MutableStateFlow<Set<PublicKey>>(emptySet())
-    val contactList = _contactList.asStateFlow()
+    private val _isBusy = MutableStateFlow(false)
+    val isBusy = _isBusy.asStateFlow()
 
     private val _isPartialProcessedGiftWrap = MutableStateFlow(false)
     val isPartialProcessedGiftWrap = _isPartialProcessedGiftWrap.asStateFlow()
@@ -62,6 +62,12 @@ 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()
 
@@ -76,28 +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
-        runObserver()
-
-        // Wait and merge metadata requests into a single batch
-        runMetadataBatching()
+    fun bindLifecycle(lifecycle: Lifecycle) {
+        viewModelScope.launch {
+            lifecycle.repeatOnLifecycle(Lifecycle.State.STARTED) {
+                coroutineScope {
+                    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()
@@ -118,81 +139,100 @@ class NostrViewModel(
         }
     }
 
-    private fun runObserver() {
+    private fun reconnect() {
         viewModelScope.launch {
-            // Observe new messages
-            launch {
-                nostr.newEvents.collect { event ->
-                    val roomId = event.roomId()
-                    val existingRoom = _chatRooms.value.firstOrNull { it.id == roomId }
+            nostr.waitUntilInitialized()
+            nostr.reconnect()
+        }
+    }
 
-                    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)
+    private fun processIncomingEvent(event: UnsignedEvent) {
+        val roomId = event.roomId()
+        val existingRoom = _chatRooms.value.firstOrNull { it.id == roomId }
+
+        if (existingRoom == null) {
+            nostr.signer.currentUser?.let { user ->
+                val newRoom = Room.new(event, user)
+                _chatRooms.update { (it + newRoom).sortedDescending().toSet() }
+            }
+        } else {
+            updateRoomList(roomId, event)
+        }
+    }
+
+    private suspend fun runObserver() = coroutineScope {
+        // Observe new messages
+        launch {
+            nostr.newEvents.collect { event ->
+                val roomId = event.roomId()
+                val existingRoom = _chatRooms.value.firstOrNull { it.id == roomId }
+
+                if (existingRoom == null) {
+                    val currentUser = nostr.signer.currentUser
+                    if (currentUser != null) {
+                        val newRoom = Room.new(event, currentUser)
+                        _chatRooms.update { (it + newRoom).sortedDescending().toSet() }
                     }
-
-                    _newEvents.emit(event)
+                } 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()
             }
+        }
 
-            // Observe contact list updates
-            launch {
-                nostr.contactListUpdates.collect { contacts ->
-                    _contactList.value = contacts.toSet()
-                }
+        // Observe metadata updates
+        launch {
+            nostr.metadataUpdates.collect { (pubkey, metadata) ->
+                updateMetadata(pubkey, metadata)
             }
+        }
 
-            // Observes subscription close
-            launch {
-                nostr.subscriptionClosed.collect {
-                    getChatRooms()
-                    _isPartialProcessedGiftWrap.value = true
-                }
+        // Observes subscription close
+        launch {
+            nostr.subscriptionClosed.collect {
+                getChatRooms()
+                _isPartialProcessedGiftWrap.value = true
             }
         }
     }
 
-    private fun runMetadataBatching() {
-        viewModelScope.launch {
-            // Wait until the client is ready
-            nostr.waitUntilInitialized()
+    private suspend fun runMetadataBatching() = coroutineScope {
+        // Wait until the client is ready
+        nostr.waitUntilInitialized()
 
-            val batch = mutableSetOf<PublicKey>()
-            val timeout = 500L // 500ms timeout for batching
+        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 (true) {
+            val firstKey = metadataRequestChannel.receive()
+            batch.add(firstKey)
+            val lastFlushTime = Clock.System.now().toEpochMilliseconds()
 
-                while (batch.isNotEmpty()) {
-                    val nextKey = withTimeoutOrNull(timeout.milliseconds) {
-                        metadataRequestChannel.receive()
-                    }
+            while (batch.isNotEmpty()) {
+                val nextKey = withTimeoutOrNull(timeout.milliseconds) {
+                    metadataRequestChannel.receive()
+                }
 
-                    if (nextKey != null) {
-                        batch.add(nextKey)
-                    }
+                // Only add the key if it's not null
+                if (nextKey != null) batch.add(nextKey)
 
-                    val now = Clock.System.now().toEpochMilliseconds()
-                    if (batch.size >= 10 || (now - lastFlushTime) >= timeout || nextKey == null) {
-                        val keysToRequest = batch.toList()
-                        batch.clear()
+                // Get current time
+                val now = Clock.System.now().toEpochMilliseconds()
 
-                        nostr.fetchMetadataBatch(keysToRequest)
-                    }
+                // 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)
                 }
             }
         }
@@ -216,7 +256,9 @@ class NostrViewModel(
     private fun login() {
         viewModelScope.launch {
             try {
-                val secret = secretStore.get("user_signer")
+                val secret = withTimeoutOrNull(3.seconds) {
+                    secretStore.get("user_signer")
+                }
 
                 if (secret == null) {
                     _signerRequired.value = true
@@ -330,17 +372,51 @@ class NostrViewModel(
         return keys
     }
 
-    private suspend fun createSigner(secret: String): AsyncNostrSigner {
-        return when {
-            secret.startsWith("nsec1") -> Keys.parse(secret)
-            secret.startsWith("bunker://") -> {
-                val appKeys = getOrInitAppKeys()
-                val bunker = NostrConnectUri.parse(secret)
-                val timeout = 50.seconds // or Duration.parse("50s")
-                NostrConnect(uri = bunker, appKeys, timeout, null)
-            }
+    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
+                        })
+                    }
+                }
+            )
 
-            else -> throw IllegalArgumentException("Invalid secret format")
+            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}")
         }
     }
 
@@ -350,48 +426,50 @@ class NostrViewModel(
         picture: ByteArray?,
         contentType: String? = null
     ) {
-        _isLoggedIn.value = true
+        _isBusy.value = true
+
+        val keys = Keys.generate()
+        val secret = keys.secretKey().toBech32()
+
         try {
-            val keys = Keys.generate()
-            val secret = keys.secretKey().toBech32()
-            var avatarUrl = ""
-
-            // Upload picture to Blossom
-            if (picture != null) {
-                val blossom = BlossomClient(
-                    url = "https://blossom.band",
-                    client = HttpClient {
-                        install(ContentNegotiation) {
-                            json(Json {
-                                ignoreUnknownKeys = true
-                                prettyPrint = true
-                                isLenient = true
-                            })
-                        }
-                    }
-                )
-
-                val descriptor = blossom.upload(
-                    file = picture,
-                    contentType = contentType,
-                    signer = keys
-                )
-
-                avatarUrl = descriptor?.url ?: ""
-            }
-
+            val avatarUrl = picture?.let { blossomUpload(it, contentType ?: "image/jpeg") }
             // Create identity
             nostr.createIdentity(keys = keys, name = name, bio, picture = avatarUrl)
-
-            // Save secret to the secret storage
+            // Persist the secret in the secret storage
             secretStore.set("user_signer", secret)
-
-            // Set an empty secret state
+            // Update local states
+            _isBusy.value = false
             _signerRequired.value = false
         } catch (e: Exception) {
             showError("Error: ${e.message}")
-        } finally {
-            _isLoggedIn.value = true
+        }
+    }
+
+    private suspend fun createSigner(secret: String): AsyncNostrSigner {
+        return when {
+            secret.startsWith("nsec1") -> Keys.parse(secret)
+
+            secret.startsWith("bunker://") -> {
+                val appKeys = getOrInitAppKeys()
+                val bunker = NostrConnectUri.parse(secret)
+                val timeout = 50.seconds // or Duration.parse("50s")
+                NostrConnect(uri = bunker, appKeys, timeout, null)
+            }
+
+            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")
         }
     }
 
@@ -409,19 +487,59 @@ class NostrViewModel(
     }
 
     suspend fun importIdentity(secret: String) {
-        _isLoggedIn.value = true
+        _isBusy.value = true
         try {
             val signer = createSigner(secret)
+            // Update signer
             nostr.setSigner(signer)
+            // Persist the secret in the secret storage
             secretStore.set("user_signer", secret)
+            // Update local states
+            _signerRequired.value = false
+            _isBusy.value = false
         } catch (e: Exception) {
             showError("Error: ${e.message}")
-        } finally {
-            _signerRequired.value = false
-            _isLoggedIn.value = false
         }
     }
 
+    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()
@@ -457,10 +575,9 @@ class NostrViewModel(
             val currentUser = nostr.signer.currentUser!!
 
             // Construct the rumor event
-            val rumor = EventBuilder
-                .privateMsgRumor(to.first(), "")
+            val rumor = EventBuilder(Kind.fromStd(KindStandard.PRIVATE_DIRECT_MESSAGE), "")
                 .tags(to.map { Tag.publicKey(it) })
-                .build(currentUser)
+                .finalizeUnsigned(currentUser)
 
             // Check if the room already exists
             val id = rumor.roomId()
@@ -485,9 +602,8 @@ 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>) {
@@ -528,15 +644,16 @@ class NostrViewModel(
         return emptyList()
     }
 
-    suspend fun chatRoomConnect(roomId: Long): Map<PublicKey, List<RelayUrl>> {
-        val room = getChatRoom(roomId)
-        val members = room.members
+    fun chatRoomConnect(roomId: Long) {
+        viewModelScope.launch {
+            try {
+                val room = getChatRoom(roomId) ?: throw IllegalArgumentException("Room not found")
+                val members = room.members
 
-        return runCatching {
-            nostr.chatRoomConnect(members.toList())
-        }.getOrElse { e ->
-            showError("Error: ${e.message}")
-            members.associateWith { emptyList<RelayUrl>() }
+                nostr.chatRoomConnect(members.toList())
+            } catch (e: Exception) {
+                showError("Error: ${e.message}")
+            }
         }
     }
 
@@ -546,7 +663,7 @@ class NostrViewModel(
         }
         viewModelScope.launch {
             try {
-                val room = getChatRoom(roomId)
+                val room = getChatRoom(roomId) ?: throw IllegalArgumentException("Room not found")
                 nostr.sendMessage(
                     to = room.members,
                     content = message,

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
@@ -37,7 +36,7 @@ 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()

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 {
-        signer
-    }
+    fun get(): AsyncNostrSigner = 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)