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

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

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

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960"
+    android:tint="?attr/colorControlNormal">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M336,680L280,624L424,480L280,337L336,281L480,425L623,281L679,337L535,480L679,624L623,680L480,536L336,680Z"/>
+</vector>

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

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

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

@@ -14,10 +14,10 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
-import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.staticCompositionLocalOf
 import androidx.compose.ui.platform.LocalContext
 import androidx.lifecycle.viewmodel.compose.viewModel
+import androidx.navigation.NavController
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.compose.rememberNavController
@@ -26,8 +26,10 @@ import su.reya.coop.coop.storage.SecretStore
 import su.reya.coop.screens.ChatScreen
 import su.reya.coop.screens.HomeScreen
 import su.reya.coop.screens.ImportScreen
+import su.reya.coop.screens.NewChatScreen
 import su.reya.coop.screens.NewIdentityScreen
 import su.reya.coop.screens.OnboardingScreen
+import su.reya.coop.screens.ScanScreen
 
 val LocalNostrViewModel = staticCompositionLocalOf<NostrViewModel> {
     error("No NostrViewModel provided")
@@ -37,18 +39,26 @@ val LocalSnackbarHostState = staticCompositionLocalOf<SnackbarHostState> {
     error("No SnackbarHostState provided")
 }
 
+val LocalNavController = staticCompositionLocalOf<NavController> {
+    error("No NavController provided")
+}
+
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
 fun App(dbPath: String) {
     val context = LocalContext.current
+    val navController = rememberNavController()
+    val darkMode = isSystemInDarkTheme()
+
+    // Snackbar
+    val snackbarHostState = remember { SnackbarHostState() }
 
     // Initialize Nostr and SecretStore
     val nostr = remember { Nostr() }
     val secretStore = remember { SecretStore(context) }
     val viewModel: NostrViewModel = viewModel { NostrViewModel(nostr, secretStore) }
     
-    // Dynamic color scheme
+    // Enabled the dynamic color scheme
-    val darkMode = isSystemInDarkTheme()
     val colorScheme = when {
         android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.S -> {
             if (darkMode) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
@@ -58,13 +68,12 @@ fun App(dbPath: String) {
         else -> expressiveLightColorScheme()
     }
 
-    // Snackbar
-    val snackbarHostState = remember { SnackbarHostState() }
-
     LaunchedEffect(Unit) {
         viewModel.initAndConnect(dbPath)
         viewModel.startNotificationHandler()
         viewModel.getChatRooms()
+
+        // Collect error events from the ViewModel
         viewModel.errorEvents.collect { message ->
             snackbarHostState.showSnackbar(message)
         }
@@ -76,9 +85,8 @@ fun App(dbPath: String) {
         CompositionLocalProvider(
             LocalNostrViewModel provides viewModel,
             LocalSnackbarHostState provides snackbarHostState,
+            LocalNavController provides navController,
         ) {
-            rememberCoroutineScope()
-            val navController = rememberNavController()
             val emptySecret by viewModel.emptySecret.collectAsState(initial = null)
 
             LaunchedEffect(emptySecret) {
@@ -136,7 +144,8 @@ fun App(dbPath: String) {
                 }
                 composable<Screen.Home> { backStackEntry ->
                     HomeScreen(
-                        onOpenChat = { id -> navController.navigate(Screen.Chat(id)) }
+                        onOpenChat = { id -> navController.navigate(Screen.Chat(id)) },
+                        onNewChat = { navController.navigate(Screen.NewChat) }
                     )
                 }
                 composable<Screen.Chat> { backStackEntry ->
@@ -146,6 +155,16 @@ fun App(dbPath: String) {
                         onBack = { navController.popBackStack() },
                     )
                 }
+                composable<Screen.NewChat> { backStackEntry ->
+                    NewChatScreen(
+                        onBack = { navController.popBackStack() },
+                    )
+                }
+                composable<Screen.Scan> { backStackEntry ->
+                    ScanScreen(
+                        onBack = { navController.popBackStack() },
+                    )
+                }
             }
         }
     }

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

@@ -9,6 +9,9 @@ sealed interface Screen {
     @Serializable
     data class Chat(val id: Long) : Screen
 
+    @Serializable
+    data object NewChat : Screen
+
     @Serializable
     data object Onboarding : Screen
 
@@ -17,4 +20,7 @@ sealed interface Screen {
 
     @Serializable
     data object NewIdentity : Screen
+
+    @Serializable
+    data object Scan : Screen
 }

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

@@ -13,9 +13,11 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.ExtendedFloatingActionButton
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.ListItem
@@ -24,17 +26,23 @@ import androidx.compose.material3.MaterialShapes
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.ModalBottomSheet
 import androidx.compose.material3.OutlinedButton
+import androidx.compose.material3.PlainTooltip
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.SegmentedListItem
 import androidx.compose.material3.SnackbarHost
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
+import androidx.compose.material3.TooltipAnchorPosition
+import androidx.compose.material3.TooltipBox
+import androidx.compose.material3.TooltipDefaults
 import androidx.compose.material3.TopAppBar
 import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.material3.rememberModalBottomSheetState
+import androidx.compose.material3.rememberTooltipState
 import androidx.compose.material3.toShape
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -47,6 +55,8 @@ import androidx.compose.ui.platform.LocalClipboard
 import androidx.compose.ui.platform.toClipEntry
 import androidx.compose.ui.unit.dp
 import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_new_chat
+import coop.composeapp.generated.resources.ic_scanner
 import coop.composeapp.generated.resources.ic_search
 import kotlinx.coroutines.launch
 import org.jetbrains.compose.resources.painterResource
@@ -61,7 +71,10 @@ import su.reya.coop.short
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
 @Composable
-fun HomeScreen(onOpenChat: (Long) -> Unit) {
+fun HomeScreen(
+    onOpenChat: (Long) -> Unit,
+    onNewChat: () -> Unit,
+) {
     val clipboard = LocalClipboard.current
     val snackbarHostState = LocalSnackbarHostState.current
     val viewModel = LocalNostrViewModel.current
@@ -74,6 +87,8 @@ fun HomeScreen(onOpenChat: (Long) -> Unit) {
     val chatRooms by viewModel.chatRooms.collectAsState(initial = emptyList())
 
     val sheetState = rememberModalBottomSheetState()
+    val listState = rememberLazyListState()
+    val expandedFab by remember { derivedStateOf { listState.firstVisibleItemIndex == 0 } }
     var showBottomSheet by remember { mutableStateOf(false) }
 
     Scaffold(
@@ -98,6 +113,13 @@ fun HomeScreen(onOpenChat: (Long) -> Unit) {
                             contentDescription = "Search"
                         )
                     }
+                    // QR Scanner
+                    IconButton(onClick = { /* TODO: Open search */ }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_scanner),
+                            contentDescription = "Scanner"
+                        )
+                    }
                     // User
                     IconButton(onClick = { showBottomSheet = true }) {
                         Avatar(
@@ -109,6 +131,32 @@ fun HomeScreen(onOpenChat: (Long) -> Unit) {
                 }
             )
         },
+        floatingActionButton = {
+            TooltipBox(
+                positionProvider = TooltipDefaults.rememberTooltipPositionProvider(
+                    TooltipAnchorPosition.Above,
+                    spacingBetweenTooltipAndAnchor = 8.dp,
+                ),
+                tooltip = {
+                    if (!expandedFab) {
+                        PlainTooltip { Text("New Chat") }
+                    }
+                },
+                state = rememberTooltipState(),
+            ) {
+                ExtendedFloatingActionButton(
+                    onClick = onNewChat,
+                    expanded = expandedFab,
+                    icon = {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_new_chat),
+                            contentDescription = "New Chat"
+                        )
+                    },
+                    text = { Text("New Chat") },
+                )
+            }
+        },
         content = { innerPadding ->
             Surface(
                 modifier = Modifier
@@ -137,6 +185,7 @@ fun HomeScreen(onOpenChat: (Long) -> Unit) {
                     }
                 } else {
                     LazyColumn(
+                        state = listState,
                         modifier = Modifier.fillMaxSize()
                     ) {
                         items(chatRooms.toList(), key = { it.id }) { room ->

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

@@ -0,0 +1,300 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.FlowRow
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.widthIn
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.BasicTextField
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.InputChip
+import androidx.compose.material3.ListItemDefaults
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SegmentedListItem
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.runtime.snapshots.SnapshotStateList
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.unit.dp
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import coop.composeapp.generated.resources.ic_close_small
+import coop.composeapp.generated.resources.ic_scanner
+import kotlinx.coroutines.delay
+import org.jetbrains.compose.resources.painterResource
+import rust.nostr.sdk.PublicKey
+import su.reya.coop.LocalNavController
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalSnackbarHostState
+import su.reya.coop.Screen
+import su.reya.coop.shared.Avatar
+import su.reya.coop.short
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun NewChatScreen(
+    onBack: () -> Unit,
+) {
+    val snackbarHostState = LocalSnackbarHostState.current
+    val navController = LocalNavController.current
+    val viewModel = LocalNostrViewModel.current
+
+    val selectedReceivers = remember { mutableStateListOf<PublicKey>() }
+    var query by remember { mutableStateOf("") }
+
+    val savedStateHandle = navController.currentBackStackEntry?.savedStateHandle
+    val qrResult by savedStateHandle?.getStateFlow<String?>("qr_result", null)?.collectAsState()
+        ?: remember { mutableStateOf(null) }
+
+    LaunchedEffect(query) {
+        if (query.length >= 3) {
+            delay(500) // 500ms debounce
+            // TODO: Implement search
+        }
+    }
+
+    LaunchedEffect(qrResult) {
+        qrResult?.let {
+            println("QR result: $it")
+            navController.currentBackStackEntry?.savedStateHandle?.remove<String>("qr_result")
+        }
+    }
+
+    Scaffold(
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = { Text("New Chat") },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                ),
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                },
+                actions = {
+                    IconButton(onClick = { navController.navigate(Screen.Scan) }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_scanner),
+                            contentDescription = "Scanner"
+                        )
+                    }
+                }
+            )
+        },
+        content = { innerPadding ->
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(innerPadding)
+            ) {
+                Surface(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(16.dp),
+                    shape = RoundedCornerShape(28.dp),
+                    color = MaterialTheme.colorScheme.surface,
+                ) {
+                    FlowRow(
+                        modifier = Modifier
+                            .padding(horizontal = 16.dp, vertical = 8.dp),
+                        horizontalArrangement = Arrangement.spacedBy(8.dp),
+                        verticalArrangement = Arrangement.spacedBy(8.dp),
+                    ) {
+                        Text(
+                            text = "To:",
+                            modifier = Modifier.align(Alignment.Top),
+                            style = MaterialTheme.typography.labelMediumEmphasized,
+                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                        )
+                        selectedReceivers.forEach { receiver ->
+                            ReceiverChip(
+                                pubkey = receiver,
+                                onRemove = { selectedReceivers.remove(receiver) }
+                            )
+                        }
+                        BasicTextField(
+                            value = query,
+                            onValueChange = { query = it },
+                            modifier = Modifier
+                                .widthIn(min = 50.dp)
+                                .align(Alignment.CenterVertically),
+                            textStyle = MaterialTheme.typography.bodyMedium.copy(
+                                color = MaterialTheme.colorScheme.onSurface
+                            ),
+                            cursorBrush = SolidColor(MaterialTheme.colorScheme.primary),
+                            decorationBox = { innerTextField ->
+                                Box(contentAlignment = Alignment.CenterStart) {
+                                    if (query.isEmpty() && selectedReceivers.isEmpty()) {
+                                        Text(
+                                            "Type a npub or address",
+                                            style = MaterialTheme.typography.bodyMedium,
+                                            color = MaterialTheme.colorScheme.onSurfaceVariant.copy(
+                                                alpha = 0.5f
+                                            )
+                                        )
+                                    }
+                                    innerTextField()
+                                }
+                            }
+                        )
+                    }
+                }
+                Spacer(modifier = Modifier.size(16.dp))
+                Column(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(horizontal = 16.dp),
+                ) {
+                    // TODO: add result list
+                    ContactList(
+                        selectedReceivers = selectedReceivers,
+                        onContactClick = { pubkey ->
+                            val roomId = viewModel.createChatRoom(listOf(pubkey))
+                            navController.navigate(Screen.Chat(roomId))
+                        }
+                    )
+                    Spacer(modifier = Modifier.size(16.dp))
+                }
+            }
+        }
+    )
+}
+
+@Composable
+fun ReceiverChip(
+    pubkey: PublicKey,
+    onRemove: () -> Unit
+) {
+    val viewModel = LocalNostrViewModel.current
+    val metadataFlow = remember(pubkey) { viewModel.getMetadata(pubkey) }
+    val metadata by metadataFlow.collectAsState(initial = null)
+
+    val profile = metadata?.asRecord()
+    val displayName = profile?.name ?: profile?.displayName ?: pubkey.short()
+    val picture = profile?.picture
+
+    InputChip(
+        selected = true,
+        onClick = onRemove,
+        label = { Text(displayName) },
+        avatar = {
+            Avatar(
+                picture = picture,
+                description = displayName,
+                size = 24.dp
+            )
+        },
+        trailingIcon = {
+            Icon(
+                painter = painterResource(Res.drawable.ic_close_small),
+                contentDescription = "Close"
+            )
+        }
+    )
+}
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ContactList(
+    selectedReceivers: SnapshotStateList<PublicKey>,
+    onContactClick: (PublicKey) -> Unit
+) {
+    val viewModel = LocalNostrViewModel.current
+    val contactList by viewModel.contactList.collectAsState(initial = emptySet())
+
+    Column(
+        modifier = Modifier.fillMaxWidth(),
+        verticalArrangement = Arrangement.spacedBy(ListItemDefaults.SegmentedGap),
+    ) {
+        Text(
+            text = "Contacts",
+            style = MaterialTheme.typography.titleLargeEmphasized,
+        )
+        Spacer(modifier = Modifier.size(8.dp))
+        contactList.forEachIndexed { index, item ->
+            ContactListItem(
+                pubkey = item,
+                index = index,
+                total = contactList.size,
+                isSelected = selectedReceivers.contains(item),
+                onClick = { onContactClick(item) },
+                onLongClick = {
+                    if (!selectedReceivers.contains(item)) {
+                        selectedReceivers.add(item)
+                    }
+                }
+            )
+        }
+    }
+}
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ContactListItem(
+    pubkey: PublicKey,
+    index: Int,
+    total: Int = 0,
+    isSelected: Boolean,
+    onClick: () -> Unit,
+    onLongClick: () -> Unit
+) {
+    val viewModel = LocalNostrViewModel.current
+    val metadataFlow = remember(pubkey) { viewModel.getMetadata(pubkey) }
+    val metadata by metadataFlow.collectAsState(initial = null)
+
+    val profile = metadata?.asRecord()
+    val displayName = profile?.name ?: profile?.displayName ?: pubkey.short()
+    val picture = profile?.picture
+
+    SegmentedListItem(
+        selected = isSelected,
+        onClick = onClick,
+        onLongClick = onLongClick,
+        shapes = ListItemDefaults.segmentedShapes(
+            index = index,
+            count = total
+        ),
+        leadingContent = {
+            Avatar(
+                picture = picture,
+                description = displayName,
+                size = 36.dp
+            )
+        },
+        supportingContent = { Text(text = pubkey.short()) },
+        content = {
+            Text(
+                text = displayName,
+                style = MaterialTheme.typography.titleMediumEmphasized,
+            )
+        }
+    )
+}

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

@@ -0,0 +1,49 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import org.jetbrains.compose.resources.painterResource
+import su.reya.coop.LocalNavController
+
+@Composable
+fun ScanScreen(
+    onBack: () -> Unit
+) {
+    val navController = LocalNavController.current
+    
+    val onResult: (String) -> Unit = { result ->
+        navController.previousBackStackEntry
+            ?.savedStateHandle
+            ?.set("qr_result", result)
+        navController.popBackStack()
+    }
+
+    Scaffold(
+        topBar = {
+            TopAppBar(
+                title = { Text("Scan QR") },
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                },
+            )
+        }
+    ) { innerPadding ->
+        Box(modifier = Modifier.padding(innerPadding)) {
+            Text("Scan QR")
+        }
+    }
+}

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

@@ -1,7 +1,10 @@
 package su.reya.coop
 
 import io.ktor.client.HttpClient
+import io.ktor.client.call.body
 import io.ktor.client.plugins.websocket.WebSockets
+import io.ktor.client.request.get
+import io.ktor.client.statement.HttpResponse
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.coroutineScope
 import kotlinx.coroutines.delay
@@ -24,6 +27,8 @@ import rust.nostr.sdk.KindStandard
 import rust.nostr.sdk.LogLevel
 import rust.nostr.sdk.Metadata
 import rust.nostr.sdk.MetadataRecord
+import rust.nostr.sdk.Nip05Address
+import rust.nostr.sdk.Nip05Profile
 import rust.nostr.sdk.NostrDatabase
 import rust.nostr.sdk.NostrGossip
 import rust.nostr.sdk.PublicKey
@@ -56,8 +61,6 @@ class Nostr {
         private set
     var msgRelayList: Map<PublicKey, List<RelayUrl>> = emptyMap()
         private set
-    var contactList: List<PublicKey> = emptyList()
-        private set
 
     suspend fun init(dbPath: String) {
         try {
@@ -87,6 +90,12 @@ class Nostr {
             client?.addRelay(RelayUrl.parse("wss://relay.primal.net"))
             client?.addRelay(RelayUrl.parse("wss://user.kindpag.es"))
 
+            // Add search relay
+            client?.addRelay(
+                url = RelayUrl.parse("wss://antiprimal.net"),
+                capabilities = RelayCapabilities.read()
+            )
+
             // Indexer relay for NIP-65 discovery
             client?.addRelay(
                 url = RelayUrl.parse("wss://indexer.coracle.social"),
@@ -107,7 +116,6 @@ class Nostr {
     suspend fun exit() {
         signer.switch(Keys.generate())
         deviceSigner = null
-        contactList = emptyList()
     }
 
     suspend fun setSigner(keys: AsyncNostrSigner) {
@@ -184,6 +192,7 @@ class Nostr {
 
     suspend fun handleNotifications(
         onMetadataUpdate: (PublicKey, Metadata) -> Unit,
+        onContactListUpdate: (List<PublicKey>) -> Unit,
         onNewMessage: (UnsignedEvent) -> Unit,
         onEose: () -> Unit,
     ) = coroutineScope {
@@ -217,6 +226,12 @@ class Nostr {
                                 }
                             }
 
+                            if (event.kind().asStd()?.equals(KindStandard.CONTACT_LIST) == true) {
+                                if (isSignedByUser(event = event)) {
+                                    onContactListUpdate(event.tags().publicKeys())
+                                }
+                            }
+
                             if (event.kind().asStd()?.equals(KindStandard.INBOX_RELAYS) == true) {
                                 if (isSignedByUser(event = event)) {
                                     getUserMessages(msgRelayList = event)
@@ -457,7 +472,7 @@ class Nostr {
                     )
                 )
 
-            client?.subscribe(target = target, id = "metadata-reqs", closeOn = opts)
+            client?.subscribe(target = target, closeOn = opts)
         } catch (e: Exception) {
             throw IllegalStateException("Failed to fetch metadata batch: ${e.message}", e)
         }
@@ -494,13 +509,10 @@ class Nostr {
                         Filter().kind(kind).author(userPubkey).pubkeys(room.members.toList());
 
                     // Check if the user is interacting with the room's members
-                    val isInteracting = client?.database()?.query(filter)?.isEmpty() == false;
+                    val isOngoing = client?.database()?.query(filter)?.isEmpty() == false;
-
-                    // Check if the room's members are in the contact list
-                    val isContact = contactList.containsAll(room.members)
 
                     // Set the room kind based on interaction status
-                    if (isInteracting || isContact) {
+                    if (isOngoing) {
                         room.setKind(RoomKind.Ongoing)
                     }
 
@@ -614,4 +626,54 @@ class Nostr {
             throw IllegalStateException("Failed to send message: ${e.message}", e)
         }
     }
+
+    suspend fun profileFromAddress(client: HttpClient, address: Nip05Address): Nip05Profile {
+        try {
+            val response: HttpResponse = client.get(address.url())
+            val bodyString: String = response.body()
+
+            return Nip05Profile.fromJson(address, bodyString)
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to fetch profile from address: ${e.message}", e)
+        }
+    }
+
+    suspend fun searchByAddress(query: String): List<PublicKey> {
+        try {
+            val address = Nip05Address.parse(query)
+            val profile = profileFromAddress(HttpClient(), address)
+
+            return listOf(profile.publicKey())
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to search address: ${e.message}", e)
+        }
+    }
+
+    suspend fun searchByNostr(query: String) {
+        try {
+            val kinds = listOf(Kind.fromStd(KindStandard.METADATA))
+            val filter = Filter().kinds(kinds).search(query).limit(10u)
+            val target =
+                ReqTarget.manual(mapOf(RelayUrl.parse("wss://antiprimal.net") to listOf(filter)))
+
+            val stream = client?.streamEvents(
+                target = target,
+                id = "search",
+                timeout = Duration.parse("4s"),
+                policy = ReqExitPolicy.ExitOnEose
+            )
+
+            // Collect the results
+            val results = mutableListOf<PublicKey>()
+
+            // Keep searching until the stream is closed or timeout
+            stream?.next()?.let { event ->
+                if (event.event != null) {
+                    results.add(event.event!!.author())
+                }
+            }
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to search nostr: ${e.message}", e)
+        }
+    }
 }

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

@@ -17,12 +17,14 @@ import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import kotlinx.coroutines.withTimeoutOrNull
 import kotlinx.serialization.json.Json
+import rust.nostr.sdk.EventBuilder
 import rust.nostr.sdk.EventId
 import rust.nostr.sdk.Keys
 import rust.nostr.sdk.Metadata
 import rust.nostr.sdk.NostrConnect
 import rust.nostr.sdk.NostrConnectUri
 import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.Tag
 import rust.nostr.sdk.UnsignedEvent
 import su.reya.coop.blossom.BlossomClient
 import su.reya.coop.storage.SecretStorage
@@ -42,6 +44,9 @@ class NostrViewModel(
     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()
 
@@ -56,6 +61,16 @@ class NostrViewModel(
         startMetadataBatchProcessor()
     }
 
+    override fun onCleared() {
+        super.onCleared()
+        // Ensure all relays are disconnect
+        viewModelScope.launch {
+            withContext(NonCancellable) {
+                nostr.disconnect()
+            }
+        }
+    }
+
     private fun showError(message: String) {
         viewModelScope.launch {
             _errorEvents.send(message)
@@ -133,6 +148,9 @@ class NostrViewModel(
                 onMetadataUpdate = { pubkey, metadata ->
                     updateMetadata(pubkey, metadata)
                 },
+                onContactListUpdate = { contactList ->
+                    _contactList.value = contactList.toSet()
+                },
                 onEose = {
                     getChatRooms()
                 },
@@ -287,6 +305,23 @@ class NostrViewModel(
         }
     }
 
+    fun createChatRoom(to: List<PublicKey>): Long {
+        if (nostr.signer.currentUser == null) throw IllegalStateException("User not signed in")
+        if (to.isEmpty()) throw IllegalArgumentException("At least one recipient is required")
+
+        // Construct the rumor event
+        val rumor = EventBuilder
+            .privateMsgRumor(to.first(), "")
+            .tags(to.map { Tag.publicKey(it) })
+            .build(nostr.signer.currentUser!!)
+
+        // Create a room from the rumor event
+        val room = Room.new(rumor, nostr.signer.currentUser!!)
+        _chatRooms.value += room
+
+        return room.id
+    }
+
     fun getChatRoom(id: Long): Room {
         return chatRooms.value.firstOrNull { it.id == id }
             ?: throw IllegalArgumentException("Room not found")
@@ -345,16 +380,6 @@ class NostrViewModel(
             }
         }
     }
-
-    override fun onCleared() {
-        super.onCleared()
-        // Ensure all relays are disconnect
-        viewModelScope.launch {
-            withContext(NonCancellable) {
-                nostr.disconnect()
-            }
-        }
-    }
 }
 
 fun PublicKey.short(): String {

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

@@ -111,7 +111,7 @@ fun Timestamp.ago(): String {
     val duration = now - inputInstant
 
     return when {
-        duration.inWholeSeconds < SECONDS_IN_MINUTE -> "now"
+        duration.inWholeSeconds < SECONDS_IN_MINUTE -> "Now"
         duration.inWholeMinutes < MINUTES_IN_HOUR -> "${duration.inWholeMinutes}m"
         duration.inWholeHours < HOURS_IN_DAY -> "${duration.inWholeHours}h"
         duration.inWholeDays < DAYS_IN_MONTH -> "${duration.inWholeDays}d"