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

@@ -65,8 +65,10 @@ class NostrForegroundService : Service() {
                 } catch (e: Exception) {
                     throw IllegalStateException("Failed to initialize Nostr Client", e)
                 }
+                
                 // Connect to bootstrap relays
                 nostr.connectBootstrapRelays()
+
                 // Handle notifications
                 nostr.handleNotifications(
                     onMetadataUpdate = { pubkey, metadata ->
@@ -75,9 +77,6 @@ class NostrForegroundService : Service() {
                     onContactListUpdate = { contacts ->
                         serviceScope.launch { nostr.emitContactListUpdate(contacts) }
                     },
-                    onSubscriptionClose = {
-                        serviceScope.launch { nostr.emitSubscriptionClosed() }
-                    },
                     onNewMessage = { event ->
                         serviceScope.launch {
                             if (!isUserInApp()) {

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

@@ -127,7 +127,8 @@ fun HomeScreen() {
     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 isSyncing by viewModel.isSyncing.collectAsStateWithLifecycle()
+    val isPartialProcessedGiftWrap by viewModel.isPartialProcessedGiftWrap.collectAsStateWithLifecycle()
     val isBannerDismissed by viewModel.isNotificationBannerDismissed.collectAsState()
 
     val expandedFab by remember { derivedStateOf { listState.firstVisibleItemIndex == 0 } }
@@ -185,10 +186,18 @@ fun HomeScreen() {
                     containerColor = MaterialTheme.colorScheme.surfaceContainer,
                 ),
                 title = {
+                    Row(
+                        verticalAlignment = Alignment.CenterVertically,
+                        horizontalArrangement = Arrangement.spacedBy(8.dp)
+                    ) {
                         Text(
                             text = "Coop",
                             style = MaterialTheme.typography.titleMediumEmphasized
                         )
+                        if (isSyncing) {
+                            LoadingIndicator(modifier = Modifier.size(24.dp))
+                        }
+                    }
                 },
                 actions = {
                     // QR Scanner

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

@@ -4,12 +4,15 @@ import io.ktor.client.HttpClient
 import io.ktor.client.call.body
 import io.ktor.client.request.get
 import io.ktor.client.statement.HttpResponse
-import kotlinx.coroutines.Job
-import kotlinx.coroutines.delay
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.channels.Channel
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.supervisorScope
 import rust.nostr.sdk.AckPolicy
@@ -56,7 +59,6 @@ import rust.nostr.sdk.nip17ExtractRelayList
 import rust.nostr.sdk.nip59MakeGiftWrapAsync
 import kotlin.coroutines.cancellation.CancellationException
 import kotlin.time.Duration
-import kotlin.time.Duration.Companion.milliseconds
 
 object NostrManager {
     val instance = Nostr()
@@ -95,18 +97,20 @@ class Nostr {
     private val _contactListUpdates = MutableSharedFlow<List<PublicKey>>(extraBufferCapacity = 100)
     val contactListUpdates = _contactListUpdates.asSharedFlow()
 
-    private val _subscriptionClosed = MutableSharedFlow<Unit>(extraBufferCapacity = 10)
-    val subscriptionClosed = _subscriptionClosed.asSharedFlow()
+    private val _messageSyncState = MutableStateFlow(MessageSyncState())
+    val messageSyncState = _messageSyncState.asStateFlow()
 
-    suspend fun emitNewEvent(event: UnsignedEvent) = _newEvents.emit(event)
+    suspend fun emitNewEvent(event: UnsignedEvent) {
+        _newEvents.emit(event)
+    }
 
-    suspend fun emitSubscriptionClosed() = _subscriptionClosed.emit(Unit)
-
-    suspend fun emitMetadataUpdate(pubkey: PublicKey, metadata: Metadata) =
+    suspend fun emitMetadataUpdate(pubkey: PublicKey, metadata: Metadata) {
         _metadataUpdates.emit(pubkey to metadata)
+    }
 
-    suspend fun emitContactListUpdate(contacts: List<PublicKey>) =
+    suspend fun emitContactListUpdate(contacts: List<PublicKey>) {
         _contactListUpdates.emit(contacts)
+    }
 
     suspend fun init(
         dbPath: String,
@@ -266,17 +270,39 @@ class Nostr {
         }
     }
 
+    @OptIn(ExperimentalCoroutinesApi::class)
     suspend fun handleNotifications(
         onMetadataUpdate: (PublicKey, Metadata) -> Unit,
         onContactListUpdate: (List<PublicKey>) -> Unit,
         onNewMessage: (UnsignedEvent) -> Unit,
-        onSubscriptionClose: () -> Unit,
     ) = supervisorScope {
         val now = Timestamp.now()
         val processedEvent = mutableSetOf<EventId>()
         val notifications = client?.notifications() ?: return@supervisorScope
 
-        var eoseTrackerJob: Job? = null
+        val giftWrapQueue = Channel<Event>(Channel.UNLIMITED)
+        var processedCount = 0
+        var eoseReceived = false
+
+        launch(Dispatchers.Default) {
+            for (event in giftWrapQueue) {
+                val rumor = extractRumor(event) ?: continue
+                processedCount++
+
+                // Trigger new message notification
+                if (rumor.createdAt().asSecs() >= now.asSecs()) {
+                    onNewMessage(rumor)
+                }
+
+                // Update sync state
+                _messageSyncState.update {
+                    it.copy(
+                        processedCount = processedCount,
+                        isSyncing = !eoseReceived || !giftWrapQueue.isEmpty
+                    )
+                }
+            }
+        }
 
         while (true) {
             val notification = notifications.next() ?: continue
@@ -293,7 +319,8 @@ class Nostr {
                             if (processedEvent.contains(event.id())) continue
                             processedEvent.add(event.id())
 
-                            if (event.kind().asStd()?.equals(KindStandard.METADATA) == true) {
+                            when (event.kind().asStd()) {
+                                KindStandard.METADATA -> {
                                     try {
                                         val metadata = Metadata.fromJson(event.content())
                                         onMetadataUpdate(event.author(), metadata)
@@ -302,7 +329,7 @@ class Nostr {
                                     }
                                 }
 
-                            if (event.kind().asStd()?.equals(KindStandard.CONTACT_LIST) == true) {
+                                KindStandard.CONTACT_LIST -> {
                                     if (isSignedByUser(event = event)) {
                                         val pubkeys = event.tags().publicKeys()
                                         // Get mutual contacts
@@ -312,40 +339,27 @@ class Nostr {
                                     }
                                 }
 
-                            if (event.kind().asStd()?.equals(KindStandard.INBOX_RELAYS) == true) {
+                                KindStandard.INBOX_RELAYS -> {
                                     // Get all gift wrap events for the current user
                                     if (isSignedByUser(event = event)) {
                                         getUserMessages(msgRelayList = event)
                                     }
                                 }
 
-                            if (event.kind().asStd()?.equals(KindStandard.GIFT_WRAP) == true) {
-                                val rumor = extractRumor(event)
-
-                                // Logic to notify UI after processing
-                                // Cancel previous tracker if it exists
-                                eoseTrackerJob?.cancel()
-
-                                // Start a new tracker
-                                eoseTrackerJob = launch {
-                                    delay(10000.milliseconds) // Wait for 10 seconds
-                                    onSubscriptionClose()
+                                KindStandard.GIFT_WRAP -> {
+                                    giftWrapQueue.send(event)
                                 }
 
-                                // Handle new message
-                                rumor?.createdAt()?.asSecs()?.let {
-                                    if (it >= now.asSecs()) {
-                                        onNewMessage(rumor)
-                                    }
-                                }
+                                else -> {}
                             }
                         }
 
                         is RelayMessageEnum.EndOfStoredEvents -> {
-                            val subscriptionId = message.subscriptionId
-
-                            if (subscriptionId == "gift-wraps") {
-                                onSubscriptionClose()
+                            if (message.subscriptionId == "gift-wraps") {
+                                eoseReceived = true
+                                if (giftWrapQueue.isEmpty) {
+                                    _messageSyncState.update { it.copy(isSyncing = false) }
+                                }
                             }
                         }
 
@@ -1036,3 +1050,8 @@ class Nostr {
         }
     }
 }
+
+data class MessageSyncState(
+    val processedCount: Int = 0,
+    val isSyncing: Boolean = false
+)

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

@@ -13,10 +13,13 @@ import kotlinx.coroutines.coroutineScope
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asSharedFlow
 import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.receiveAsFlow
+import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
@@ -79,9 +82,14 @@ class NostrViewModel(
     val errorEvents = _errorEvents.receiveAsFlow()
 
     private val _metadataStore = mutableMapOf<PublicKey, MutableStateFlow<Metadata?>>()
+    
     private val metadataRequestChannel = Channel<PublicKey>(Channel.UNLIMITED)
+
     private val seenPublicKeys = mutableSetOf<PublicKey>()
 
+    val isSyncing = nostr.messageSyncState.map { it.isSyncing }
+        .stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), false)
+
     init {
         // Skip the splash screen if a user is already logged in
         if (nostr.signer.currentUser != null) {
@@ -108,7 +116,6 @@ class NostrViewModel(
         viewModelScope.launch {
             lifecycle.repeatOnLifecycle(Lifecycle.State.STARTED) {
                 coroutineScope {
-                    launch { refreshChatRooms() }
                     launch { runObserver() }
                     launch { runMetadataBatching() }
                 }
@@ -148,6 +155,21 @@ class NostrViewModel(
     }
 
     private suspend fun runObserver() = coroutineScope {
+        // Observe message sync progress
+        launch {
+            nostr.messageSyncState.collect { state ->
+                // When at least some messages are processed, allow UI to show the list
+                if (state.processedCount > 0) {
+                    _isPartialProcessedGiftWrap.value = true
+                }
+
+                // Refresh UI every 10 messages OR when sync is fully done
+                if (state.processedCount % 10 == 0 || !state.isSyncing) {
+                    refreshChatRooms()
+                }
+            }
+        }
+
         // Observe new messages
         launch {
             nostr.newEvents.collect { event ->
@@ -181,14 +203,6 @@ class NostrViewModel(
                 updateMetadata(pubkey, metadata)
             }
         }
-
-        // Observes subscription close
-        launch {
-            nostr.subscriptionClosed.collect {
-                getChatRooms()
-                _isPartialProcessedGiftWrap.value = true
-            }
-        }
     }
 
     private suspend fun runMetadataBatching() = coroutineScope {