Add chat bulk actions and avatar cache

android/app/build.gradle.kts

@@ -22,8 +22,8 @@ android {
         applicationId = "xyz.kusoft.qmax"
         minSdk = 26
         targetSdk = 36
-        versionCode = 49
+        versionCode = 51
-        versionName = "0.1.48"
+        versionName = "0.1.50"
 
         buildConfigField("String", "QMAX_DEFAULT_SERVER_URL", "\"https://qmax.kusoft.xyz\"")
         buildConfigField("String", "QMAX_DEFAULT_PAIRING_CODE", "\"qmax-MxRq4h2HQBEIFs6k\"")

android/app/src/main/java/xyz/kusoft/qmax/MainActivity.kt

@@ -321,11 +321,18 @@ private fun LoginScreen(vm: QMaxViewModel) {
     }
 }
 
+private enum class ChatBulkUiAction {
+    ClearHistory,
+    Delete
+}
+
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 private fun ChatListScreen(vm: QMaxViewModel) {
     val state by vm.state
     var menuOpen by remember { mutableStateOf(false) }
+    var selectionMenuOpen by remember { mutableStateOf(false) }
+    var pendingBulkAction by remember { mutableStateOf<ChatBulkUiAction?>(null) }
     var searchMode by remember { mutableStateOf(false) }
     var newChatOpen by remember { mutableStateOf(false) }
     val filteredChats = remember(state.chats, state.searchQuery) {
@@ -350,9 +357,69 @@ private fun ChatListScreen(vm: QMaxViewModel) {
         onLogout = vm::logout,
         onSearch = vm::updateSearchQuery,
         onOpenChat = vm::openChat,
-        onNewChat = { newChatOpen = true }
+        onNewChat = { newChatOpen = true },
+        onCacheAvatar = vm::cacheAvatar,
+        selectionMenuOpen = selectionMenuOpen,
+        onSelectionMenuOpenChange = { selectionMenuOpen = it },
+        onClearSelection = vm::clearChatSelection,
+        onToggleChatSelection = vm::toggleChatSelection,
+        onBeginChatSelection = vm::beginChatSelection,
+        onClearSelectedHistory = {
+            selectionMenuOpen = false
+            pendingBulkAction = ChatBulkUiAction.ClearHistory
+        },
+        onDeleteSelectedChats = {
+            selectionMenuOpen = false
+            pendingBulkAction = ChatBulkUiAction.Delete
+        }
     )
 
+    pendingBulkAction?.let { action ->
+        val selectedCount = state.selectedChatIds.size
+        AlertDialog(
+            onDismissRequest = { pendingBulkAction = null },
+            title = {
+                Text(
+                    when (action) {
+                        ChatBulkUiAction.ClearHistory -> "Очистить историю"
+                        ChatBulkUiAction.Delete -> "Удалить чаты"
+                    }
+                )
+            },
+            text = {
+                Text(
+                    when (action) {
+                        ChatBulkUiAction.ClearHistory -> "Очистить историю в выбранных чатах: $selectedCount?"
+                        ChatBulkUiAction.Delete -> "Удалить выбранные чаты: $selectedCount?"
+                    }
+                )
+            },
+            confirmButton = {
+                TextButton(
+                    onClick = {
+                        pendingBulkAction = null
+                        when (action) {
+                            ChatBulkUiAction.ClearHistory -> vm.clearSelectedChatHistories()
+                            ChatBulkUiAction.Delete -> vm.deleteSelectedChats()
+                        }
+                    }
+                ) {
+                    Text(
+                        when (action) {
+                            ChatBulkUiAction.ClearHistory -> "Очистить"
+                            ChatBulkUiAction.Delete -> "Удалить"
+                        }
+                    )
+                }
+            },
+            dismissButton = {
+                TextButton(onClick = { pendingBulkAction = null }) {
+                    Text("Отмена")
+                }
+            }
+        )
+    }
+
     if (newChatOpen) {
         NewChatDialog(
             vm = vm,
@@ -483,7 +550,9 @@ private fun ChatListScreen(vm: QMaxViewModel) {
                         ChatRow(
                             chat = chat,
                             session = state.session,
+                            cachedAvatarPaths = state.cachedAvatarPaths,
                             draftText = state.drafts[chat.id],
+                            onCacheAvatar = vm::cacheAvatar,
                             onClick = { vm.openChat(chat) }
                         )
                         HorizontalDivider(color = Color(0xFFE9EEF2), thickness = 0.6.dp, modifier = Modifier.padding(start = 74.dp))
@@ -516,8 +585,17 @@ private fun TelegramChatListContent(
     onLogout: () -> Unit,
     onSearch: (String) -> Unit,
     onOpenChat: (ChatDto) -> Unit,
-    onNewChat: () -> Unit
+    onNewChat: () -> Unit,
+    onCacheAvatar: (String) -> Unit,
+    selectionMenuOpen: Boolean,
+    onSelectionMenuOpenChange: (Boolean) -> Unit,
+    onClearSelection: () -> Unit,
+    onToggleChatSelection: (String) -> Unit,
+    onBeginChatSelection: (String) -> Unit,
+    onClearSelectedHistory: () -> Unit,
+    onDeleteSelectedChats: () -> Unit
 ) {
+    val selectedCount = state.selectedChatIds.size
     Box(Modifier.fillMaxSize().background(Color.White)) {
         Column(
             Modifier
@@ -525,14 +603,25 @@ private fun TelegramChatListContent(
                 .statusBarsPadding()
                 .background(Color.White)
         ) {
-            TelegramLikeHeader(
+            if (selectedCount > 0) {
-                title = if (state.chatListConnectionIssue) "Соединение..." else "QMAX",
+                ChatSelectionHeader(
-                menuOpen = menuOpen,
+                    selectedCount = selectedCount,
-                onMenuOpenChange = onMenuOpenChange,
+                    menuOpen = selectionMenuOpen,
-                onRefresh = onRefresh,
+                    onMenuOpenChange = onSelectionMenuOpenChange,
-                onCheckUpdates = onCheckUpdates,
+                    onClearSelection = onClearSelection,
-                onLogout = onLogout
+                    onClearHistory = onClearSelectedHistory,
-            )
+                    onDelete = onDeleteSelectedChats
+                )
+            } else {
+                TelegramLikeHeader(
+                    title = if (state.chatListConnectionIssue) "Соединение..." else "QMAX",
+                    menuOpen = menuOpen,
+                    onMenuOpenChange = onMenuOpenChange,
+                    onRefresh = onRefresh,
+                    onCheckUpdates = onCheckUpdates,
+                    onLogout = onLogout
+                )
+            }
             ChatListSearchBar(query = state.searchQuery, onQuery = onSearch)
             state.updateMessage?.let {
                 Text(
@@ -557,8 +646,19 @@ private fun TelegramChatListContent(
                         TelegramChatRow(
                             chat = chat,
                             session = state.session,
+                            cachedAvatarPaths = state.cachedAvatarPaths,
                             draftText = state.drafts[chat.id],
-                            onClick = { onOpenChat(chat) }
+                            onCacheAvatar = onCacheAvatar,
+                            isSelected = chat.id in state.selectedChatIds,
+                            selectionActive = selectedCount > 0,
+                            onLongClick = { onBeginChatSelection(chat.id) },
+                            onClick = {
+                                if (selectedCount > 0) {
+                                    onToggleChatSelection(chat.id)
+                                } else {
+                                    onOpenChat(chat)
+                                }
+                            }
                         )
                     }
                 }
@@ -674,6 +774,81 @@ private fun QMaxHeaderAvatarStack() {
     }
 }
 
+@Composable
+private fun ChatSelectionHeader(
+    selectedCount: Int,
+    menuOpen: Boolean,
+    onMenuOpenChange: (Boolean) -> Unit,
+    onClearSelection: () -> Unit,
+    onClearHistory: () -> Unit,
+    onDelete: () -> Unit
+) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(start = 12.dp, end = 12.dp, top = 14.dp, bottom = 8.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        IconButton(
+            onClick = onClearSelection,
+            modifier = Modifier.size(52.dp)
+        ) {
+            Icon(
+                Icons.Filled.Close,
+                contentDescription = "Снять выделение",
+                tint = QMaxText,
+                modifier = Modifier.size(30.dp)
+            )
+        }
+        Text(
+            selectedCount.toString(),
+            color = QMaxText,
+            style = MaterialTheme.typography.headlineSmall,
+            fontWeight = FontWeight.Bold,
+            modifier = Modifier.weight(1f)
+        )
+        Box {
+            IconButton(
+                onClick = { onMenuOpenChange(true) },
+                modifier = Modifier.size(52.dp)
+            ) {
+                Icon(
+                    Icons.Filled.MoreVert,
+                    contentDescription = "Действия с выбранными чатами",
+                    tint = QMaxText,
+                    modifier = Modifier.size(30.dp)
+                )
+            }
+            DropdownMenu(
+                expanded = menuOpen,
+                onDismissRequest = { onMenuOpenChange(false) }
+            ) {
+                DropdownMenuItem(
+                    text = { Text("Очистить историю") },
+                    onClick = {
+                        onMenuOpenChange(false)
+                        onClearHistory()
+                    }
+                )
+                DropdownMenuItem(
+                    text = { Text("Удалить") },
+                    leadingIcon = {
+                        Icon(
+                            Icons.Filled.Delete,
+                            contentDescription = null,
+                            tint = Color(0xFFD84343)
+                        )
+                    },
+                    onClick = {
+                        onMenuOpenChange(false)
+                        onDelete()
+                    }
+                )
+            }
+        }
+    }
+}
+
 @Composable
 private fun ChatListSearchBar(query: String, onQuery: (String) -> Unit) {
     Surface(
@@ -716,8 +891,19 @@ private fun ChatListSearchBar(query: String, onQuery: (String) -> Unit) {
     }
 }
 
+@OptIn(ExperimentalFoundationApi::class)
 @Composable
-private fun TelegramChatRow(chat: ChatDto, session: QMaxSession?, draftText: String?, onClick: () -> Unit) {
+private fun TelegramChatRow(
+    chat: ChatDto,
+    session: QMaxSession?,
+    cachedAvatarPaths: Map<String, String>,
+    draftText: String?,
+    onCacheAvatar: (String) -> Unit,
+    isSelected: Boolean,
+    selectionActive: Boolean,
+    onLongClick: () -> Unit,
+    onClick: () -> Unit
+) {
     val hasDraft = !draftText.isNullOrBlank()
     val preview = if (hasDraft) {
         "Черновик: ${draftText.trim()}"
@@ -726,15 +912,50 @@ private fun TelegramChatRow(chat: ChatDto, session: QMaxSession?, draftText: Str
     }
     val isMediaPreview = !hasDraft && isGenericMediaPreview(chat.lastMessagePreview)
     val unreadText = chat.unreadCount.coerceAtMost(999).toString()
+    val rowBackground = when {
+        isSelected -> Color(0xFFEAF7FF)
+        selectionActive -> Color(0xFFFAFCFD)
+        else -> Color.Transparent
+    }
 
     Row(
         modifier = Modifier
             .fillMaxWidth()
-            .clickable(onClick = onClick)
+            .background(rowBackground)
+            .combinedClickable(
+                onClick = onClick,
+                onLongClick = onLongClick
+            )
             .padding(horizontal = 26.dp, vertical = 8.dp),
         verticalAlignment = Alignment.CenterVertically
     ) {
-        Avatar(title = chat.title, avatarUrl = chat.avatarUrl, session = session, size = 58.dp)
+        Box {
+            Avatar(
+                title = chat.title,
+                avatarUrl = chat.avatarUrl,
+                session = session,
+                size = 58.dp,
+                cachedAvatarPaths = cachedAvatarPaths,
+                onCacheAvatar = onCacheAvatar
+            )
+            if (isSelected) {
+                Surface(
+                    color = QMaxBlue,
+                    shape = CircleShape,
+                    border = androidx.compose.foundation.BorderStroke(2.dp, Color.White),
+                    modifier = Modifier
+                        .align(Alignment.BottomEnd)
+                        .size(22.dp)
+                ) {
+                    Icon(
+                        Icons.Filled.Check,
+                        contentDescription = null,
+                        tint = Color.White,
+                        modifier = Modifier.padding(3.dp)
+                    )
+                }
+            }
+        }
         Spacer(Modifier.width(14.dp))
         Column(Modifier.weight(1f)) {
             Row(verticalAlignment = Alignment.CenterVertically) {
@@ -987,7 +1208,14 @@ private fun ServiceBanner(vm: QMaxViewModel) {
 }
 
 @Composable
-private fun ChatRow(chat: ChatDto, session: QMaxSession?, draftText: String?, onClick: () -> Unit) {
+private fun ChatRow(
+    chat: ChatDto,
+    session: QMaxSession?,
+    cachedAvatarPaths: Map<String, String>,
+    draftText: String?,
+    onCacheAvatar: (String) -> Unit,
+    onClick: () -> Unit
+) {
     val hasDraft = !draftText.isNullOrBlank()
     val preview = if (hasDraft) {
         "Черновик: ${draftText.trim()}"
@@ -1003,7 +1231,14 @@ private fun ChatRow(chat: ChatDto, session: QMaxSession?, draftText: String?, on
             .padding(horizontal = 12.dp, vertical = 8.dp),
         verticalAlignment = Alignment.CenterVertically
     ) {
-        Avatar(title = chat.title, avatarUrl = chat.avatarUrl, session = session, size = 52.dp)
+        Avatar(
+            title = chat.title,
+            avatarUrl = chat.avatarUrl,
+            session = session,
+            size = 52.dp,
+            cachedAvatarPaths = cachedAvatarPaths,
+            onCacheAvatar = onCacheAvatar
+        )
         Spacer(Modifier.width(12.dp))
         Column(Modifier.weight(1f)) {
             Row(verticalAlignment = Alignment.CenterVertically) {
@@ -1340,7 +1575,14 @@ private fun ChatScreen(vm: QMaxViewModel) {
                         )
                     } else {
                         Row(verticalAlignment = Alignment.CenterVertically) {
-                            Avatar(title = chat.title, avatarUrl = chat.avatarUrl, session = session, size = 38.dp)
+                            Avatar(
+                                title = chat.title,
+                                avatarUrl = chat.avatarUrl,
+                                session = session,
+                                size = 38.dp,
+                                cachedAvatarPaths = state.cachedAvatarPaths,
+                                onCacheAvatar = vm::cacheAvatar
+                            )
                             Spacer(Modifier.width(10.dp))
                             Column(Modifier.weight(1f)) {
                                 Text(chat.title, maxLines = 1, overflow = TextOverflow.Ellipsis, fontWeight = FontWeight.SemiBold)
@@ -1566,6 +1808,9 @@ private fun ChatScreen(vm: QMaxViewModel) {
         ForwardMessageDialog(
             chats = state.chats,
             selectedChatId = chat.id,
+            session = session,
+            cachedAvatarPaths = state.cachedAvatarPaths,
+            onCacheAvatar = vm::cacheAvatar,
             onSelect = vm::forwardTo,
             onClose = vm::closeForwardPicker
         )
@@ -1576,6 +1821,9 @@ private fun ChatScreen(vm: QMaxViewModel) {
 private fun ForwardMessageDialog(
     chats: List<ChatDto>,
     selectedChatId: String?,
+    session: QMaxSession?,
+    cachedAvatarPaths: Map<String, String>,
+    onCacheAvatar: (String) -> Unit,
     onSelect: (ChatDto) -> Unit,
     onClose: () -> Unit
 ) {
@@ -1603,6 +1851,9 @@ private fun ForwardMessageDialog(
                         ForwardChatRow(
                             chat = chat,
                             isCurrent = chat.id == selectedChatId,
+                            session = session,
+                            cachedAvatarPaths = cachedAvatarPaths,
+                            onCacheAvatar = onCacheAvatar,
                             onClick = { onSelect(chat) }
                         )
                         HorizontalDivider(color = Color(0xFFE9EEF2), thickness = 0.6.dp, modifier = Modifier.padding(start = 56.dp))
@@ -1614,7 +1865,14 @@ private fun ForwardMessageDialog(
 }
 
 @Composable
-private fun ForwardChatRow(chat: ChatDto, isCurrent: Boolean, onClick: () -> Unit) {
+private fun ForwardChatRow(
+    chat: ChatDto,
+    isCurrent: Boolean,
+    session: QMaxSession?,
+    cachedAvatarPaths: Map<String, String>,
+    onCacheAvatar: (String) -> Unit,
+    onClick: () -> Unit
+) {
     Row(
         modifier = Modifier
             .fillMaxWidth()
@@ -1622,7 +1880,14 @@ private fun ForwardChatRow(chat: ChatDto, isCurrent: Boolean, onClick: () -> Uni
             .padding(horizontal = 2.dp, vertical = 9.dp),
         verticalAlignment = Alignment.CenterVertically
     ) {
-        Avatar(title = chat.title, size = 44.dp)
+        Avatar(
+            title = chat.title,
+            avatarUrl = chat.avatarUrl,
+            session = session,
+            size = 44.dp,
+            cachedAvatarPaths = cachedAvatarPaths,
+            onCacheAvatar = onCacheAvatar
+        )
         Spacer(Modifier.width(10.dp))
         Column(Modifier.weight(1f)) {
             Row(verticalAlignment = Alignment.CenterVertically) {
@@ -3011,7 +3276,9 @@ private fun Avatar(
     title: String,
     size: androidx.compose.ui.unit.Dp,
     avatarUrl: String? = null,
-    session: QMaxSession? = null
+    session: QMaxSession? = null,
+    cachedAvatarPaths: Map<String, String> = emptyMap(),
+    onCacheAvatar: (String) -> Unit = {}
 ) {
     val resolvedAvatarUrl = remember(avatarUrl, session?.serverUrl) {
         avatarUrl?.takeIf { it.isNotBlank() }?.let { url ->
@@ -3024,14 +3291,13 @@ private fun Avatar(
             }
         }
     }
-    val avatarModel = if (resolvedAvatarUrl != null &&
+    val cachedAvatarPath = resolvedAvatarUrl?.let(cachedAvatarPaths::get)
-        session != null &&
+    LaunchedEffect(resolvedAvatarUrl, cachedAvatarPath) {
-        resolvedAvatarUrl.startsWith(session.serverUrl.trimEnd('/'), ignoreCase = true)
+        if (resolvedAvatarUrl != null && cachedAvatarPath == null) {
-    ) {
+            onCacheAvatar(resolvedAvatarUrl)
-        imageRequest(resolvedAvatarUrl, session.accessToken)
+        }
-    } else {
-        resolvedAvatarUrl
     }
+    val avatarModel = cachedAvatarPath?.let(::File)
 
     Box(
         Modifier

android/app/src/main/java/xyz/kusoft/qmax/core/QMaxContainer.kt

@@ -1,6 +1,7 @@
 package xyz.kusoft.qmax.core
 
 import android.content.Context
+import xyz.kusoft.qmax.core.local.AvatarDiskCache
 import xyz.kusoft.qmax.core.local.AttachmentDiskCache
 import xyz.kusoft.qmax.core.local.LocalMessageCache
 import xyz.kusoft.qmax.core.network.QMaxApi
@@ -12,6 +13,7 @@ class QMaxContainer(context: Context) {
     val draftStore = MessageDraftStore(context)
     val messageCache = LocalMessageCache(context)
     val attachmentCache = AttachmentDiskCache(context)
+    val avatarCache = AvatarDiskCache(context)
     val api = QMaxApi()
-    val repository = QMaxRepository(context, api, tokenStore, draftStore, messageCache, attachmentCache)
+    val repository = QMaxRepository(context, api, tokenStore, draftStore, messageCache, attachmentCache, avatarCache)
 }

android/app/src/main/java/xyz/kusoft/qmax/core/QMaxRepository.kt

@@ -19,6 +19,7 @@ import okhttp3.RequestBody
 import okio.BufferedSink
 import xyz.kusoft.qmax.BuildConfig
 import xyz.kusoft.qmax.core.local.AttachmentDiskCache
+import xyz.kusoft.qmax.core.local.AvatarDiskCache
 import xyz.kusoft.qmax.core.local.LocalMessageCache
 import xyz.kusoft.qmax.core.model.ArgusManifestDto
 import xyz.kusoft.qmax.core.model.AttachmentDto
@@ -43,7 +44,8 @@ class QMaxRepository(
     private val tokenStore: TokenStore,
     private val draftStore: MessageDraftStore,
     private val messageCache: LocalMessageCache,
-    private val attachmentCache: AttachmentDiskCache
+    private val attachmentCache: AttachmentDiskCache,
+    private val avatarCache: AvatarDiskCache
 ) {
     val session: Flow<QMaxSession?> = tokenStore.session
     val drafts: Flow<Map<String, String>> = draftStore.drafts
@@ -68,6 +70,7 @@ class QMaxRepository(
         draftStore.clearAll()
         messageCache.clearAll()
         attachmentCache.clearAll()
+        avatarCache.clearAll()
     }
 
     suspend fun cachedChats(session: QMaxSession): List<ChatDto> {
@@ -113,6 +116,40 @@ class QMaxRepository(
         messageCache.saveChats(session, orderedChats(updatedChats))
     }
 
+    suspend fun clearChatHistories(session: QMaxSession, chatIds: Collection<String>) {
+        val ids = chatIds.filter(String::isNotBlank).distinct()
+        if (ids.isEmpty()) {
+            return
+        }
+
+        withFreshSession(session) {
+            api.clearChatHistories(it.serverUrl, it.accessToken, ids)
+        }
+        messageCache.clearMessages(session, ids)
+        val updatedChats = cachedChats(session).map { chat ->
+            if (chat.id in ids) {
+                chat.copy(lastMessagePreview = null, lastMessageAt = null, unreadCount = 0)
+            } else {
+                chat
+            }
+        }
+        messageCache.saveChats(session, orderedChats(updatedChats))
+    }
+
+    suspend fun deleteChats(session: QMaxSession, chatIds: Collection<String>) {
+        val ids = chatIds.filter(String::isNotBlank).distinct()
+        if (ids.isEmpty()) {
+            return
+        }
+
+        withFreshSession(session) {
+            api.deleteChats(it.serverUrl, it.accessToken, ids)
+        }
+        messageCache.clearMessages(session, ids)
+        val updatedChats = cachedChats(session).filterNot { it.id in ids }
+        messageCache.saveChats(session, orderedChats(updatedChats))
+    }
+
     suspend fun searchMessages(session: QMaxSession, chatId: String, query: String): List<MessageDto> {
         val messages = withFreshSession(session) { api.searchMessages(it.serverUrl, it.accessToken, chatId, query) }
         messages.forEach { messageCache.upsertMessage(session, it) }
@@ -222,6 +259,18 @@ class QMaxRepository(
         }
     }
 
+    suspend fun cachedAvatarFile(session: QMaxSession, avatarUrl: String): File {
+        return withFreshSession(session) { freshSession ->
+            val url = absoluteUrl(freshSession, avatarUrl)
+            val token = freshSession.accessToken.takeIf {
+                url.startsWith(freshSession.serverUrl.trimEnd('/'), ignoreCase = true)
+            }
+            avatarCache.cachedFile(freshSession, url) { target ->
+                api.downloadToFile(url, target, token)
+            }
+        }
+    }
+
     suspend fun openAttachment(session: QMaxSession, attachment: AttachmentDto): File {
         val file = cachedAttachmentFile(session, attachment)
         val uri = FileProvider.getUriForFile(context, "${context.packageName}.fileprovider", file)
@@ -369,6 +418,31 @@ class QMaxRepository(
         return refreshed
     }
 
+    private suspend fun reauthenticateSession(session: QMaxSession): QMaxSession {
+        val serverUrl = session.serverUrl.ifBlank { BuildConfig.QMAX_DEFAULT_SERVER_URL }
+        val response = api.login(serverUrl, BuildConfig.QMAX_DEFAULT_PAIRING_CODE, android.os.Build.MODEL)
+        val recovered = QMaxSession(
+            serverUrl = serverUrl,
+            accessToken = response.accessToken,
+            refreshToken = response.refreshToken,
+            userName = response.user.displayName
+        )
+        tokenStore.save(recovered)
+        lastRefreshedSession = recovered
+        return recovered
+    }
+
+    private suspend fun refreshOrReauthenticateSession(session: QMaxSession): QMaxSession {
+        return try {
+            refreshSession(session)
+        } catch (error: QMaxHttpException) {
+            if (error.code != 401) {
+                throw error
+            }
+            reauthenticateSession(session)
+        }
+    }
+
     fun absoluteUrl(session: QMaxSession, path: String): String = api.absoluteUrl(session.serverUrl, path)
 
     private fun orderedChats(chats: List<ChatDto>): List<ChatDto> {
@@ -467,7 +541,7 @@ class QMaxRepository(
             val refreshed = refreshMutex.withLock {
                 lastRefreshedSession
                     ?.takeIf { it.serverUrl == session.serverUrl && it.accessToken != session.accessToken }
-                    ?: refreshSession(session)
+                    ?: refreshOrReauthenticateSession(session)
             }
             block(refreshed)
         }

android/app/src/main/java/xyz/kusoft/qmax/core/local/AvatarDiskCache.kt

@@ -0,0 +1,71 @@
+package xyz.kusoft.qmax.core.local
+
+import android.content.Context
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import xyz.kusoft.qmax.core.model.QMaxSession
+import java.io.File
+import java.security.MessageDigest
+import java.util.Locale
+
+class AvatarDiskCache(context: Context) {
+    private val root = File(context.filesDir, "qmax-avatars")
+
+    suspend fun cachedFile(
+        session: QMaxSession,
+        avatarUrl: String,
+        downloader: suspend (File) -> Long
+    ): File {
+        return withContext(Dispatchers.IO) {
+            val target = targetFile(session, avatarUrl)
+            if (isValid(target)) {
+                return@withContext target
+            }
+
+            target.delete()
+            downloader(target)
+
+            if (!isValid(target)) {
+                target.delete()
+                error("Avatar cache mismatch: downloaded file is empty or missing")
+            }
+
+            target
+        }
+    }
+
+    suspend fun clearAll() {
+        withContext(Dispatchers.IO) {
+            root.deleteRecursively()
+        }
+    }
+
+    private fun targetFile(session: QMaxSession, avatarUrl: String): File {
+        val sessionDir = root.resolve(cacheKey(session)).also { it.mkdirs() }
+        val key = sha256(avatarUrl).take(40)
+        return sessionDir.resolve("$key.${extension(avatarUrl)}")
+    }
+
+    private fun isValid(file: File): Boolean {
+        return file.exists() && file.length() > 0L
+    }
+
+    private fun cacheKey(session: QMaxSession): String {
+        return sha256("${session.serverUrl}|${session.userName}").take(24)
+    }
+
+    private fun extension(avatarUrl: String): String {
+        return avatarUrl
+            .substringBefore('?')
+            .substringBefore('#')
+            .substringAfterLast('.', "")
+            .lowercase(Locale.ROOT)
+            .takeIf { it.length in 1..12 && it.all { char -> char.isLetterOrDigit() } }
+            ?: "img"
+    }
+
+    private fun sha256(value: String): String {
+        val bytes = MessageDigest.getInstance("SHA-256").digest(value.toByteArray())
+        return bytes.joinToString("") { "%02x".format(it) }
+    }
+}

android/app/src/main/java/xyz/kusoft/qmax/core/local/LocalMessageCache.kt

@@ -71,6 +71,14 @@ class LocalMessageCache(context: Context) {
         saveMessages(session, chatId, updated)
     }
 
+    suspend fun clearMessages(session: QMaxSession, chatIds: Collection<String>) {
+        withContext(Dispatchers.IO) {
+            chatIds.forEach { chatId ->
+                messageFile(session, chatId).delete()
+            }
+        }
+    }
+
     suspend fun clearAll() {
         withContext(Dispatchers.IO) {
             root.deleteRecursively()

android/app/src/main/java/xyz/kusoft/qmax/core/model/Models.kt

@@ -125,6 +125,11 @@ data class CreateDirectChatRequest(
     val avatarUrl: String? = null
 )
 
+@Serializable
+data class ChatBulkActionRequest(
+    val chatIds: List<String>
+)
+
 @Serializable
 data class MaxBridgeStatusDto(
     val mode: String,

android/app/src/main/java/xyz/kusoft/qmax/core/network/QMaxApi.kt

@@ -22,6 +22,7 @@ import xyz.kusoft.qmax.BuildConfig
 import xyz.kusoft.qmax.core.model.AuthResponse
 import xyz.kusoft.qmax.core.model.ArgusManifestDto
 import xyz.kusoft.qmax.core.model.BeginMaxLoginRequest
+import xyz.kusoft.qmax.core.model.ChatBulkActionRequest
 import xyz.kusoft.qmax.core.model.ChatDto
 import xyz.kusoft.qmax.core.model.ChatPresenceDto
 import xyz.kusoft.qmax.core.model.CreateDirectChatRequest
@@ -86,6 +87,14 @@ class QMaxApi {
         postNoContent(sessionServerUrl, "/api/chats/$chatId/read", token, MarkChatReadRequest())
     }
 
+    suspend fun clearChatHistories(sessionServerUrl: String, token: String, chatIds: List<String>) {
+        postNoContent(sessionServerUrl, "/api/chats/clear-history", token, ChatBulkActionRequest(chatIds))
+    }
+
+    suspend fun deleteChats(sessionServerUrl: String, token: String, chatIds: List<String>) {
+        postNoContent(sessionServerUrl, "/api/chats/delete", token, ChatBulkActionRequest(chatIds))
+    }
+
     suspend fun searchMessages(sessionServerUrl: String, token: String, chatId: String, query: String): List<MessageDto> {
         val encodedQuery = URLEncoder.encode(query, StandardCharsets.UTF_8.toString())
         return get(sessionServerUrl, "/api/chats/$chatId/search?q=$encodedQuery", token)

android/app/src/main/java/xyz/kusoft/qmax/ui/QMaxViewModel.kt

@@ -39,6 +39,7 @@ data class QMaxUiState(
     val forwardTarget: MessageDto? = null,
     val drafts: Map<String, String> = emptyMap(),
     val searchQuery: String = "",
+    val selectedChatIds: Set<String> = emptySet(),
     val composerText: String = "",
     val newChatExternalId: String = "",
     val newChatTitle: String = "",
@@ -53,7 +54,8 @@ data class QMaxUiState(
     val previewImageUrl: String? = null,
     val previewImageGallery: List<String> = emptyList(),
     val previewImageIndex: Int = 0,
-    val cachedImagePaths: Map<String, String> = emptyMap()
+    val cachedImagePaths: Map<String, String> = emptyMap(),
+    val cachedAvatarPaths: Map<String, String> = emptyMap()
 )
 
 class QMaxViewModel(private val repository: QMaxRepository) : ViewModel() {
@@ -76,6 +78,7 @@ class QMaxViewModel(private val repository: QMaxRepository) : ViewModel() {
     private var pendingOpenChatId: String? = null
     private val locallyReadChatFingerprints = mutableMapOf<String, String>()
     private val imageCacheInFlight = mutableSetOf<String>()
+    private val avatarCacheInFlight = mutableSetOf<String>()
 
     init {
         viewModelScope.launch {
@@ -86,7 +89,9 @@ class QMaxViewModel(private val repository: QMaxRepository) : ViewModel() {
                 state.value = state.value.copy(
                     session = session,
                     serverUrl = session?.serverUrl ?: state.value.serverUrl,
-                    cachedImagePaths = if (sessionChanged) emptyMap() else state.value.cachedImagePaths
+                    cachedImagePaths = if (sessionChanged) emptyMap() else state.value.cachedImagePaths,
+                    cachedAvatarPaths = if (sessionChanged) emptyMap() else state.value.cachedAvatarPaths,
+                    selectedChatIds = if (sessionChanged) emptySet() else state.value.selectedChatIds
                 )
                 if (session != null) {
                     autoLoginJob?.cancel()
@@ -147,6 +152,23 @@ class QMaxViewModel(private val repository: QMaxRepository) : ViewModel() {
         state.value = state.value.copy(searchQuery = value)
     }
 
+    fun beginChatSelection(chatId: String) {
+        if (chatId.isBlank()) return
+        state.value = state.value.copy(selectedChatIds = state.value.selectedChatIds + chatId)
+    }
+
+    fun toggleChatSelection(chatId: String) {
+        if (chatId.isBlank()) return
+        val selected = state.value.selectedChatIds
+        state.value = state.value.copy(
+            selectedChatIds = if (chatId in selected) selected - chatId else selected + chatId
+        )
+    }
+
+    fun clearChatSelection() {
+        state.value = state.value.copy(selectedChatIds = emptySet())
+    }
+
     fun updateNewChatExternalId(value: String) {
         state.value = state.value.copy(newChatExternalId = value)
     }
@@ -353,7 +375,7 @@ class QMaxViewModel(private val repository: QMaxRepository) : ViewModel() {
         val reorderedChats = if (closingChatId.isNullOrBlank()) {
             state.value.chats
         } else {
-            closingChat?.let(::rememberChatRead)
+            closingChat.let(::rememberChatRead)
             normalizeChats(state.value.chats.map { chat ->
                 if (chat.id == closingChatId) chat.copy(unreadCount = 0) else chat
             }, selectedChatId = closingChatId)
@@ -374,6 +396,64 @@ class QMaxViewModel(private val repository: QMaxRepository) : ViewModel() {
         closingChatId?.let(::syncChatRead)
     }
 
+    fun clearSelectedChatHistories() = launchLoading(false) {
+        val session = requireSession()
+        val ids = state.value.selectedChatIds
+        if (ids.isEmpty()) return@launchLoading
+
+        repository.clearChatHistories(session, ids)
+        val updatedChats = normalizeChats(
+            state.value.chats.map { chat ->
+                if (chat.id in ids) {
+                    chat.copy(lastMessagePreview = null, lastMessageAt = null, unreadCount = 0)
+                } else {
+                    chat
+                }
+            }
+        )
+        val selectedChat = state.value.selectedChat
+        val selectedChatId = selectedChat?.id
+        state.value = state.value.copy(
+            selectedChat = selectedChat?.let { chat ->
+                if (chat.id in ids) chat.copy(lastMessagePreview = null, lastMessageAt = null, unreadCount = 0) else chat
+            },
+            chats = updatedChats,
+            messages = if (selectedChatId != null && selectedChatId in ids) emptyList() else state.value.messages,
+            selectedChatIds = emptySet()
+        )
+        persistCurrentChats()
+        refreshChats(showLoading = false)
+    }
+
+    fun deleteSelectedChats() = launchLoading(false) {
+        val session = requireSession()
+        val ids = state.value.selectedChatIds
+        if (ids.isEmpty()) return@launchLoading
+
+        repository.deleteChats(session, ids)
+        val selectedChatId = state.value.selectedChat?.id
+        val selectedChatDeleted = selectedChatId != null && selectedChatId in ids
+        val updatedChats = normalizeChats(state.value.chats.filterNot { it.id in ids })
+        state.value = state.value.copy(
+            selectedChat = if (selectedChatDeleted) null else state.value.selectedChat,
+            chats = updatedChats,
+            messages = if (selectedChatDeleted) emptyList() else state.value.messages,
+            chatPresenceText = if (selectedChatDeleted) null else state.value.chatPresenceText,
+            replyTarget = if (selectedChatDeleted) null else state.value.replyTarget,
+            editTarget = if (selectedChatDeleted) null else state.value.editTarget,
+            forwardTarget = if (selectedChatDeleted) null else state.value.forwardTarget,
+            composerText = if (selectedChatDeleted) "" else state.value.composerText,
+            selectedChatIds = emptySet()
+        )
+        if (selectedChatDeleted) {
+            messagePollJob?.cancel()
+            presencePollJob?.cancel()
+            realtime.joinChat(null)
+        }
+        persistCurrentChats()
+        refreshChats(showLoading = false)
+    }
+
     fun loadMessages(showLoading: Boolean = true) = launchLoading(showLoading) {
         if (!showLoading && state.value.sendingMessage) {
             return@launchLoading
@@ -777,6 +857,30 @@ class QMaxViewModel(private val repository: QMaxRepository) : ViewModel() {
         }
     }
 
+    fun cacheAvatar(avatarUrl: String) {
+        val session = state.value.session ?: return
+        val key = repository.absoluteUrl(session, avatarUrl)
+        if (state.value.cachedAvatarPaths.containsKey(key) || !avatarCacheInFlight.add(key)) {
+            return
+        }
+
+        viewModelScope.launch {
+            try {
+                val file = repository.cachedAvatarFile(session, key)
+                val currentSession = state.value.session
+                if (currentSession?.serverUrl == session.serverUrl && currentSession.userName == session.userName) {
+                    state.value = state.value.copy(
+                        cachedAvatarPaths = state.value.cachedAvatarPaths + (key to file.absolutePath)
+                    )
+                }
+            } catch (_: Throwable) {
+                // The letter avatar remains visible if the remote avatar cannot be cached.
+            } finally {
+                avatarCacheInFlight.remove(key)
+            }
+        }
+    }
+
     private fun requireSession(): QMaxSession = state.value.session ?: error("No QMAX session")
 
     private fun saveCurrentDraft() {

server/QMax.Api/Contracts/ChatContracts.cs

@@ -49,5 +49,6 @@ public sealed record ForwardMessageRequest(Guid TargetChatId);
 public sealed record SetReactionRequest(string Emoji);
 public sealed record MessageDeletedDto(Guid ChatId, Guid MessageId);
 public sealed record CreateDirectChatRequest(string ExternalChatId, string Title, string? AvatarUrl = null);
+public sealed record ChatBulkActionRequest(IReadOnlyList<Guid> ChatIds);
 
 public sealed record ChatPresenceDto(bool IsTyping, string? StatusText, DateTimeOffset UpdatedAt);

server/QMax.Api/Controllers/ChatsController.cs

@@ -121,6 +121,86 @@ public sealed class ChatsController(
         return NoContent();
     }
 
+    [HttpPost("clear-history")]
+    public async Task<IActionResult> ClearHistories(ChatBulkActionRequest request, CancellationToken cancellationToken)
+    {
+        var chatIds = request.ChatIds.Distinct().ToArray();
+        if (chatIds.Length == 0)
+        {
+            return BadRequest("chatIds are required.");
+        }
+
+        var chats = await LoadChatsWithAttachmentsAsync(chatIds, cancellationToken);
+        if (chats.Count != chatIds.Length)
+        {
+            return NotFound();
+        }
+
+        foreach (var chat in chats)
+        {
+            var maxFailure = await TryApplyMaxChatActionAsync(
+                chat,
+                (externalChatId, chatUrl) => maxBridge.ClearChatHistoryAsync(externalChatId, chatUrl, cancellationToken),
+                "clear history",
+                cancellationToken);
+            if (maxFailure is not null)
+            {
+                return maxFailure;
+            }
+        }
+
+        var files = AttachmentFiles(chats).ToArray();
+        foreach (var chat in chats)
+        {
+            db.Messages.RemoveRange(chat.Messages);
+            chat.LastMessageAt = null;
+            chat.LastMessagePreview = null;
+            chat.UnreadCount = 0;
+            chat.UpdatedAt = DateTimeOffset.UtcNow;
+        }
+
+        await db.SaveChangesAsync(cancellationToken);
+        DeleteFiles(files);
+        await hubContext.Clients.All.SendAsync("ChatListInvalidated", cancellationToken);
+        return NoContent();
+    }
+
+    [HttpPost("delete")]
+    public async Task<IActionResult> DeleteChats(ChatBulkActionRequest request, CancellationToken cancellationToken)
+    {
+        var chatIds = request.ChatIds.Distinct().ToArray();
+        if (chatIds.Length == 0)
+        {
+            return BadRequest("chatIds are required.");
+        }
+
+        var chats = await LoadChatsWithAttachmentsAsync(chatIds, cancellationToken);
+        if (chats.Count != chatIds.Length)
+        {
+            return NotFound();
+        }
+
+        foreach (var chat in chats)
+        {
+            var maxFailure = await TryApplyMaxChatActionAsync(
+                chat,
+                (externalChatId, chatUrl) => maxBridge.DeleteChatAsync(externalChatId, chatUrl, cancellationToken),
+                "delete chat",
+                cancellationToken);
+            if (maxFailure is not null)
+            {
+                return maxFailure;
+            }
+        }
+
+        var files = AttachmentFiles(chats).ToArray();
+        db.Chats.RemoveRange(chats);
+        await db.SaveChangesAsync(cancellationToken);
+        DeleteFiles(files);
+        await hubContext.Clients.All.SendAsync("ChatListInvalidated", cancellationToken);
+        return NoContent();
+    }
+
     [HttpGet("{chatId:guid}/search")]
     public async Task<ActionResult<IReadOnlyList<MessageDto>>> SearchMessages(
         Guid chatId,
@@ -656,6 +736,56 @@ public sealed class ChatsController(
             statusCode: StatusCodes.Status409Conflict);
     }
 
+    private async Task<ActionResult?> TryApplyMaxChatActionAsync(
+        Chat chat,
+        Func<string, string?, Task<MaxActionResult>> action,
+        string actionName,
+        CancellationToken cancellationToken)
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+
+        if (string.IsNullOrWhiteSpace(chat.ExternalId))
+        {
+            return null;
+        }
+
+        var result = await action(chat.ExternalId, chat.WebUrl);
+        if (result.Success)
+        {
+            return null;
+        }
+
+        return Problem(
+            result.Error ?? $"MAX {actionName} action failed for {chat.Title}.",
+            statusCode: StatusCodes.Status409Conflict);
+    }
+
+    private async Task<List<Chat>> LoadChatsWithAttachmentsAsync(IReadOnlyCollection<Guid> chatIds, CancellationToken cancellationToken)
+    {
+        return await db.Chats
+            .Include(x => x.Messages)
+            .ThenInclude(x => x.Attachments)
+            .Where(x => chatIds.Contains(x.Id))
+            .ToListAsync(cancellationToken);
+    }
+
+    private IEnumerable<string> AttachmentFiles(IEnumerable<Chat> chats)
+    {
+        return chats
+            .SelectMany(x => x.Messages)
+            .SelectMany(x => x.Attachments)
+            .Select(x => storage.GetPath(x.StorageFileName))
+            .Where(System.IO.File.Exists);
+    }
+
+    private static void DeleteFiles(IEnumerable<string> files)
+    {
+        foreach (var file in files)
+        {
+            System.IO.File.Delete(file);
+        }
+    }
+
     private static string? NormalizeReaction(string? value)
     {
         var emoji = value?.Trim();

server/QMax.Api/Infrastructure/Max/IMaxBridgeClient.cs

@@ -9,6 +9,8 @@ public interface IMaxBridgeClient
     Task<IReadOnlyList<MaxChatUpdate>> FetchUpdatesAsync(CancellationToken cancellationToken);
     Task<MaxChatUpdate?> FetchChatHistoryAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken);
     Task<MaxChatPresence?> FetchChatPresenceAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken);
+    Task<MaxActionResult> ClearChatHistoryAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken);
+    Task<MaxActionResult> DeleteChatAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken);
     Task<MaxSendResult> SendTextAsync(string externalChatId, string? chatUrl, string text, CancellationToken cancellationToken);
     Task<MaxSendResult> SendAttachmentAsync(string externalChatId, string? chatUrl, string path, string caption, CancellationToken cancellationToken);
     Task<MaxActionResult> EditMessageAsync(string externalChatId, string externalMessageId, string? currentText, string text, CancellationToken cancellationToken);

server/QMax.Api/Infrastructure/Max/MockMaxBridgeClient.cs

@@ -56,6 +56,16 @@ public sealed class MockMaxBridgeClient : IMaxBridgeClient
         return Task.FromResult<MaxChatPresence?>(new MaxChatPresence(false, null, DateTimeOffset.UtcNow));
     }
 
+    public Task<MaxActionResult> ClearChatHistoryAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+    {
+        return Task.FromResult(new MaxActionResult(true, null));
+    }
+
+    public Task<MaxActionResult> DeleteChatAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+    {
+        return Task.FromResult(new MaxActionResult(true, null));
+    }
+
     public Task<MaxSendResult> SendTextAsync(string externalChatId, string? chatUrl, string text, CancellationToken cancellationToken)
     {
         return Task.FromResult(new MaxSendResult(true, $"mock-out-{Guid.NewGuid():N}", null, MockChatUrl(externalChatId)));

server/QMax.Api/Infrastructure/Max/WorkerMaxBridgeClient.cs

@@ -53,6 +53,26 @@ public sealed class WorkerMaxBridgeClient(
         return await SendAsync<MaxChatPresence>(HttpMethod.Post, "/chat/presence", new { externalChatId, chatUrl }, cancellationToken);
     }
 
+    public async Task<MaxActionResult> ClearChatHistoryAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+    {
+        return await SendAsync<MaxActionResult>(
+                HttpMethod.Post,
+                "/chat/clear-history",
+                new { externalChatId, chatUrl },
+                cancellationToken)
+            ?? new MaxActionResult(false, "Worker returned an empty clear history result.");
+    }
+
+    public async Task<MaxActionResult> DeleteChatAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+    {
+        return await SendAsync<MaxActionResult>(
+                HttpMethod.Post,
+                "/chat/delete",
+                new { externalChatId, chatUrl },
+                cancellationToken)
+            ?? new MaxActionResult(false, "Worker returned an empty delete chat result.");
+    }
+
     public async Task<MaxSendResult> SendTextAsync(string externalChatId, string? chatUrl, string text, CancellationToken cancellationToken)
     {
         return await SendAsync<MaxSendResult>(HttpMethod.Post, "/send/text", new { externalChatId, chatUrl, text }, cancellationToken)

tests/QMax.Tests/ApiSmokeTests.cs

@@ -1282,6 +1282,16 @@ public sealed class ApiSmokeTests : IDisposable
             return Task.FromResult<MaxChatPresence?>(null);
         }
 
+        public Task<MaxActionResult> ClearChatHistoryAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+        {
+            return Task.FromResult(new MaxActionResult(true, null));
+        }
+
+        public Task<MaxActionResult> DeleteChatAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+        {
+            return Task.FromResult(new MaxActionResult(true, null));
+        }
+
         public Task<MaxSendResult> SendTextAsync(string externalChatId, string? chatUrl, string text, CancellationToken cancellationToken)
         {
             return Task.FromResult(new MaxSendResult(true, $"external-{Guid.NewGuid():N}", null));
@@ -1355,6 +1365,16 @@ public sealed class ApiSmokeTests : IDisposable
             return Task.FromResult<MaxChatPresence?>(null);
         }
 
+        public Task<MaxActionResult> ClearChatHistoryAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+        {
+            return Fail();
+        }
+
+        public Task<MaxActionResult> DeleteChatAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+        {
+            return Fail();
+        }
+
         public Task<MaxSendResult> SendTextAsync(string externalChatId, string? chatUrl, string text, CancellationToken cancellationToken)
         {
             return Task.FromResult(new MaxSendResult(true, $"external-{Guid.NewGuid():N}", null));
@@ -1433,6 +1453,16 @@ public sealed class ApiSmokeTests : IDisposable
             return Task.FromResult<MaxChatPresence?>(null);
         }
 
+        public Task<MaxActionResult> ClearChatHistoryAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+        {
+            return Task.FromResult(new MaxActionResult(false, "Simulated MAX action failure."));
+        }
+
+        public Task<MaxActionResult> DeleteChatAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+        {
+            return Task.FromResult(new MaxActionResult(false, "Simulated MAX action failure."));
+        }
+
         public Task<MaxSendResult> SendTextAsync(string externalChatId, string? chatUrl, string text, CancellationToken cancellationToken)
         {
             return Task.FromResult(new MaxSendResult(false, null, "Simulated MAX send failure."));
@@ -1512,6 +1542,16 @@ public sealed class ApiSmokeTests : IDisposable
             return Task.FromResult<MaxChatPresence?>(null);
         }
 
+        public Task<MaxActionResult> ClearChatHistoryAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+        {
+            return Task.FromResult(new MaxActionResult(true, null));
+        }
+
+        public Task<MaxActionResult> DeleteChatAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+        {
+            return Task.FromResult(new MaxActionResult(true, null));
+        }
+
         public Task<MaxSendResult> SendTextAsync(string externalChatId, string? chatUrl, string text, CancellationToken cancellationToken)
         {
             return Task.FromResult(new MaxSendResult(true, $"external-{Guid.NewGuid():N}", null));
@@ -1655,6 +1695,16 @@ public sealed class ApiSmokeTests : IDisposable
             return Task.FromResult<MaxChatPresence?>(null);
         }
 
+        public Task<MaxActionResult> ClearChatHistoryAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+        {
+            return Task.FromResult(new MaxActionResult(true, null));
+        }
+
+        public Task<MaxActionResult> DeleteChatAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+        {
+            return Task.FromResult(new MaxActionResult(true, null));
+        }
+
         public Task<MaxSendResult> SendTextAsync(string externalChatId, string? chatUrl, string text, CancellationToken cancellationToken)
         {
             return Task.FromResult(new MaxSendResult(true, $"external-{Guid.NewGuid():N}", null));
@@ -1760,6 +1810,16 @@ public sealed class ApiSmokeTests : IDisposable
             return Task.FromResult<MaxChatPresence?>(null);
         }
 
+        public Task<MaxActionResult> ClearChatHistoryAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+        {
+            return Task.FromResult(new MaxActionResult(true, null));
+        }
+
+        public Task<MaxActionResult> DeleteChatAsync(string externalChatId, string? chatUrl, CancellationToken cancellationToken)
+        {
+            return Task.FromResult(new MaxActionResult(true, null));
+        }
+
         public Task<MaxSendResult> SendTextAsync(string externalChatId, string? chatUrl, string text, CancellationToken cancellationToken)
         {
             return Task.FromResult(new MaxSendResult(true, $"external-{Guid.NewGuid():N}", null));

worker/src/server.js

@@ -338,6 +338,42 @@ app.post("/chat/history", async (req, res) => {
   }
 });
 
+app.post("/chat/clear-history", async (req, res) => {
+  try {
+    const externalChatId = String(req.body?.externalChatId || "").trim();
+    const chatUrl = normalizeMaxChatUrl(req.body?.chatUrl);
+    if (!externalChatId) {
+      return res.json({ success: false, error: "externalChatId is required." });
+    }
+
+    const result = await withPageLock(async () => {
+      const p = await ensurePage("maintenance");
+      return await clearChatHistoryInMax(p, externalChatId, chatUrl);
+    }, "maintenance");
+    res.json(result);
+  } catch (error) {
+    res.json({ success: false, error: String(error?.message || error) });
+  }
+});
+
+app.post("/chat/delete", async (req, res) => {
+  try {
+    const externalChatId = String(req.body?.externalChatId || "").trim();
+    const chatUrl = normalizeMaxChatUrl(req.body?.chatUrl);
+    if (!externalChatId) {
+      return res.json({ success: false, error: "externalChatId is required." });
+    }
+
+    const result = await withPageLock(async () => {
+      const p = await ensurePage("maintenance");
+      return await deleteChatInMax(p, externalChatId, chatUrl);
+    }, "maintenance");
+    res.json(result);
+  } catch (error) {
+    res.json({ success: false, error: String(error?.message || error) });
+  }
+});
+
 app.post("/chat/clear-composer", async (req, res) => {
   try {
     const externalChatId = String(req.body?.externalChatId || "").trim();
@@ -4614,6 +4650,46 @@ async function deleteMessageInMax(p, externalChatId, externalMessageId, currentT
   return { success: true, error: null };
 }
 
+async function clearChatHistoryInMax(p, externalChatId, chatUrl) {
+  return await applyChatMenuActionInMax(
+    p,
+    externalChatId,
+    chatUrl,
+    ["\u043e\u0447\u0438\u0441\u0442\u0438\u0442\u044c \u0438\u0441\u0442\u043e\u0440", "\u043e\u0447\u0438\u0441\u0442\u0438\u0442\u044c \u0447\u0430\u0442", "clear history", "clear chat"],
+    ["\u043e\u0447\u0438\u0441\u0442\u0438\u0442\u044c", "\u0434\u0430", "clear", "yes", "ok"],
+    "clear history");
+}
+
+async function deleteChatInMax(p, externalChatId, chatUrl) {
+  return await applyChatMenuActionInMax(
+    p,
+    externalChatId,
+    chatUrl,
+    ["\u0443\u0434\u0430\u043b\u0438\u0442\u044c \u0447\u0430\u0442", "\u0443\u0434\u0430\u043b\u0438\u0442\u044c", "delete chat", "delete conversation", "remove chat"],
+    ["\u0443\u0434\u0430\u043b\u0438\u0442\u044c", "\u0434\u0430", "delete", "yes", "ok"],
+    "delete chat");
+}
+
+async function applyChatMenuActionInMax(p, externalChatId, chatUrl, actionLabels, confirmLabels, actionName) {
+  const opened = await ensureDomChatOpen(p, externalChatId, 5000, false, chatUrl);
+  if (!opened) {
+    return { success: false, error: "MAX chat was not found or did not open." };
+  }
+
+  if (!(await openChatMenu(p, actionLabels))) {
+    return { success: false, error: `MAX ${actionName} menu was not opened.` };
+  }
+
+  if (!(await clickActionByText(p, actionLabels))) {
+    return { success: false, error: `MAX ${actionName} action was not found in the chat menu.` };
+  }
+
+  await p.waitForTimeout(700);
+  await clickActionByText(p, confirmLabels);
+  await p.waitForTimeout(1200);
+  return { success: true, error: null };
+}
+
 async function setMessageReactionInMax(p, externalChatId, externalMessageId, currentText, emoji) {
   const target = await locateMessageForAction(p, externalChatId, externalMessageId, currentText);
   if (!target) {
@@ -4764,6 +4840,115 @@ async function clickMessageMenuButton(p, rect) {
   }, rect).catch(() => false);
 }
 
+async function openChatMenu(p, expectedLabels) {
+  for (let attempt = 0; attempt < 3; attempt++) {
+    if (await clickChatMenuButton(p)) {
+      await p.waitForTimeout(600);
+      if (await hasMenuActionSurface(p, expectedLabels)) {
+        return true;
+      }
+    }
+
+    await p.keyboard.press("Escape").catch(() => {});
+    await p.waitForTimeout(250);
+  }
+
+  return false;
+}
+
+async function clickChatMenuButton(p) {
+  return await p.evaluate(() => {
+    const isVisible = (element) => {
+      const style = window.getComputedStyle(element);
+      const rect = element.getBoundingClientRect();
+      return style.visibility !== "hidden" &&
+        style.display !== "none" &&
+        rect.width > 0 &&
+        rect.height > 0 &&
+        rect.bottom >= 0 &&
+        rect.right >= 0 &&
+        rect.top <= window.innerHeight &&
+        rect.left <= window.innerWidth;
+    };
+    const textOf = (element) => String(
+      element.innerText ||
+      element.textContent ||
+      element.getAttribute("aria-label") ||
+      element.getAttribute("title") ||
+      ""
+    ).trim().toLowerCase();
+    const chatRoot = document.querySelector("[class*='openedChat' i]") ||
+      document.querySelector("main") ||
+      document.body;
+    const rootRect = chatRoot.getBoundingClientRect();
+    const headerBottom = Math.min(window.innerHeight, rootRect.top + 170);
+    const buttons = Array.from(document.querySelectorAll("button,[role='button']"))
+      .filter((button) => {
+        if (!(button instanceof HTMLElement) || !isVisible(button)) return false;
+        const rect = button.getBoundingClientRect();
+        const centerX = rect.left + rect.width / 2;
+        const centerY = rect.top + rect.height / 2;
+        return centerX >= rootRect.left + rootRect.width * 0.45 &&
+          centerX <= rootRect.right + 8 &&
+          centerY >= Math.max(0, rootRect.top) &&
+          centerY <= headerBottom;
+      });
+    const match = buttons.find((button) => {
+      const text = textOf(button);
+      const cls = String(button.className || "").toLowerCase();
+      return text.includes("\u0435\u0449") ||
+        text.includes("more") ||
+        text.includes("menu") ||
+        text.includes("actions") ||
+        cls.includes("more") ||
+        cls.includes("menu") ||
+        text === "\u22ef" ||
+        text === "\u2026";
+    }) || buttons.sort((a, b) => b.getBoundingClientRect().right - a.getBoundingClientRect().right)[0];
+
+    if (!match) {
+      return false;
+    }
+
+    match.click();
+    return true;
+  }).catch(() => false);
+}
+
+async function hasMenuActionSurface(p, labels) {
+  return await p.evaluate((rawLabels) => {
+    const normalizedLabels = rawLabels.map((label) => String(label || "").trim().toLowerCase()).filter(Boolean);
+    if (normalizedLabels.length === 0) {
+      return false;
+    }
+    const isVisible = (element) => {
+      const style = window.getComputedStyle(element);
+      const rect = element.getBoundingClientRect();
+      return style.visibility !== "hidden" &&
+        style.display !== "none" &&
+        rect.width > 0 &&
+        rect.height > 0 &&
+        rect.bottom >= 0 &&
+        rect.right >= 0 &&
+        rect.top <= window.innerHeight &&
+        rect.left <= window.innerWidth;
+    };
+    const textOf = (element) => String(
+      element.innerText ||
+      element.textContent ||
+      element.getAttribute("aria-label") ||
+      element.getAttribute("title") ||
+      ""
+    ).trim().toLowerCase();
+    return Array.from(document.querySelectorAll("[role='menu'],[role='menuitem'],[class*='menu' i],[class*='popover' i],[class*='dropdown' i],button,span,div"))
+      .filter((element) => element instanceof HTMLElement && isVisible(element))
+      .some((element) => {
+        const text = textOf(element);
+        return text && normalizedLabels.some((label) => text === label || text.includes(label));
+      });
+  }, labels).catch(() => false);
+}
+
 async function hasActionSurface(p) {
   return await p.evaluate(() => {
     const isVisible = (element) => {