Удаление чата из кэша при удалении на бэке

backend/src/Modules/Conversations/Application/Chats/LeaveOrDelete/LeaveOrDeleteChat.cs

@@ -1,13 +1,14 @@
 using System;
+using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
-using Knot.Shared.Kernel;
-using Knot.Contracts.Conversations.Domain;
 using Knot.Contracts.Conversations.Application.Abstractions;
-using MediatR;
+using Knot.Contracts.Conversations.Domain;
-using System.Linq;
+using Knot.Modules.Conversations.Infrastructure.SignalR;
-using Knot.Contracts.Messaging.Application.Abstractions;
+using Knot.Shared.Kernel;
 using Knot.Shared.Kernel.Storage;
+using MediatR;
+using Microsoft.AspNetCore.SignalR;
 
 namespace Knot.Modules.Conversations.Application.Chats.LeaveOrDelete;
 
@@ -19,17 +20,21 @@ internal sealed class LeaveOrDeleteChatCommandHandler : ICommandHandler<LeaveOrD
     private readonly IMessageRepository _messageRepository;
     private readonly IFileStorageService _fileStorage;
     private readonly IChatsUnitOfWork _uow;
+    private readonly IHubContext<ChatHub> _hubContext;
 
     public LeaveOrDeleteChatCommandHandler(
         IChatRepository chatRepository,
+
         IMessageRepository messageRepository,
         IFileStorageService fileStorage,
-        IChatsUnitOfWork uow)
+        IChatsUnitOfWork uow,
+        IHubContext<ChatHub> hubContext)
     {
         _chatRepository = chatRepository;
         _messageRepository = messageRepository;
         _fileStorage = fileStorage;
         _uow = uow;
+        _hubContext = hubContext;
     }
 
     public async Task<Result<SuccessResponse>> Handle(LeaveOrDeleteChatCommand request, CancellationToken cancellationToken)
@@ -58,6 +63,14 @@ internal sealed class LeaveOrDeleteChatCommandHandler : ICommandHandler<LeaveOrD
             // DELETE ALL MESSAGES AND FILES FIRST
             await DeleteChatMediaAndMessagesAsync(chat.Id, cancellationToken);
             _chatRepository.Remove(chat);
+
+            // Notify all remaining members that the chat was deleted
+
+            foreach (var member in chat.Members)
+            {
+                await _hubContext.Clients.User(member.UserId.ToString())
+                    .SendAsync("chat_deleted", chat.Id.ToString(), cancellationToken);
+            }
         }
 
         await _uow.SaveChangesAsync(cancellationToken);
@@ -68,6 +81,7 @@ internal sealed class LeaveOrDeleteChatCommandHandler : ICommandHandler<LeaveOrD
     private async Task DeleteChatMediaAndMessagesAsync(Guid chatId, CancellationToken ct)
     {
         try
+
         {
             // Get all messages directly from Mongo (not paged)
             var messages = await _messageRepository.GetChatMessagesAsync(chatId, int.MaxValue, 0, ct);

client-mobile/chats/data/remote/signalr/ChatEvent.kt

@@ -7,6 +7,7 @@ sealed class ChatEvent {
     data class NewMessage(val message: MessageDto) : ChatEvent()
     data class MessageEdited(val messageId: String, val chatId: String, val content: String) : ChatEvent()
     data class MessageDeleted(val messageId: String, val chatId: String) : ChatEvent()
+    data class ChatDeleted(val chatId: String) : ChatEvent()
     data class MessagesRead(val chatId: String, val userId: String, val lastReadSequenceId: Int) : ChatEvent()
     data class UserTyping(val chatId: String, val userId: String) : ChatEvent()
     data class UserStoppedTyping(val chatId: String, val userId: String) : ChatEvent()

client-mobile/chats/data/remote/signalr/ChatHubClient.kt

@@ -136,6 +136,11 @@ class ChatHubClient @Inject constructor() {
                 _events.tryEmit(ChatEvent.MessageDeleted(messageId, chatId))
             }, String::class.java, String::class.java)
 
+            conn.on("chat_deleted", { chatId: String ->
+                Log.d("ChatHubClient", ">>> chat_deleted event: $chatId")
+                _events.tryEmit(ChatEvent.ChatDeleted(chatId))
+            }, String::class.java)
+
             conn.on("messages_read", { data: MessagesReadEvent ->
                 Log.d("ChatHubClient", ">>> messages_read event: ${data.effectiveChatId}")
                 _events.tryEmit(ChatEvent.MessagesRead(

client-mobile/chats/data/repository/ChatRepositoryImpl.kt

@@ -83,6 +83,18 @@ class ChatRepositoryImpl @Inject constructor(
                 }
             }
             android.util.Log.d(TAG, "Cached ${entities.size} chats with messages")
+            
+            // Проверяем удалённые чаты - если чата нет в списке от сервера, удаляем из БД
+            val serverChatIds = chats.map { it.id }.toSet()
+            val localChats = chatDao.getAllChats()
+            localChats.forEach { localChat ->
+                if (localChat.id !in serverChatIds) {
+                    android.util.Log.d(TAG, "Chat ${localChat.id} was deleted on server, removing from local DB")
+                    chatDao.deleteChat(localChat.id)
+                    messageDao.clearChat(localChat.id)
+                }
+            }
+            
             chats
         } catch (e: Exception) {
             android.util.Log.d(TAG, "Network load failed, using cache")

client-mobile/chats/data/signalr/MessageSignalRHandler.kt

@@ -8,6 +8,7 @@ import chats.data.remote.signalr.MessagesReadEvent
 import chats.data.remote.signalr.ReactionEvent
 import chats.data.repository.toEntity
 import com.google.gson.Gson
+import core.database.data.ChatDao
 import core.database.data.MessageDao
 import core.database.data.MessageEntity
 import core.database.data.SyncStatus
@@ -18,22 +19,11 @@ import kotlinx.coroutines.flow.collectLatest
 import javax.inject.Inject
 import javax.inject.Singleton
 
-/**
- * Обработчик SignalR событий для обновления локального кэша
- * 
- * Обрабатывает события:
- * - new_message: новое сообщение в чате
- * - message_edited: сообщение отредактировано
- * - message_deleted: сообщение удалено
- * - messages_read: сообщения прочитаны
- * - reaction_added/removed: реакция добавлена/удалена
- * 
- * Все изменения сразу записываются в Room, UI обновляется через Flow
- */
 @Singleton
 class MessageSignalRHandler @Inject constructor(
     private val hubClient: ChatHubClient,
-    private val dao: MessageDao,
+    private val messageDao: MessageDao,
+    private val chatDao: ChatDao,
     private val serverConfig: ServerConfig,
     private val tokenManager: TokenManager
 ) {
@@ -78,6 +68,7 @@ class MessageSignalRHandler @Inject constructor(
                 is ChatEvent.NewMessage -> handleNewMessage(event.message)
                 is ChatEvent.MessageEdited -> handleMessageEdited(event.messageId, event.chatId, event.content)
                 is ChatEvent.MessageDeleted -> handleMessageDeleted(event.messageId, event.chatId)
+                is ChatEvent.ChatDeleted -> handleChatDeleted(event.chatId)
                 is ChatEvent.MessagesRead -> handleMessagesRead(event.chatId, event.lastReadSequenceId)
                 is ChatEvent.ReactionUpdated -> handleReactionUpdated(
                     event.messageId, 
@@ -91,6 +82,12 @@ class MessageSignalRHandler @Inject constructor(
         }
     }
 
+    private suspend fun handleChatDeleted(chatId: String) {
+        Log.d(TAG, "Chat deleted: $chatId, removing from local database")
+        chatDao.deleteChat(chatId)
+        Log.d(TAG, "Successfully removed chat $chatId from local database")
+    }
+
     private suspend fun handleNewMessage(dto: MessageDto) {
         Log.d(TAG, "New message received: ${dto.id} in chat ${dto.chatId}")
         
@@ -99,7 +96,7 @@ class MessageSignalRHandler @Inject constructor(
             syncStatus = SyncStatus.SYNCED
         )
         
-        val existing = dao.getMessageById(dto.id)
+        val existing = messageDao.getMessageById(dto.id)
         if (existing != null && existing.syncStatus == SyncStatus.SYNCING) {
             val syncedEntity = entity.copy(
                 syncStatus = SyncStatus.SYNCED,
@@ -107,10 +104,10 @@ class MessageSignalRHandler @Inject constructor(
                 isEditedLocally = false,
                 editedContent = null
             )
-            dao.insertMessage(syncedEntity)
+            messageDao.insertMessage(syncedEntity)
             Log.d(TAG, "Merged local message with server response: ${dto.id}")
         } else {
-            dao.insertMessage(entity)
+            messageDao.insertMessage(entity)
             Log.d(TAG, "Saved new message: ${dto.id}")
         }
     }
@@ -118,7 +115,7 @@ class MessageSignalRHandler @Inject constructor(
     private suspend fun handleMessageEdited(messageId: String, chatId: String, content: String) {
         Log.d(TAG, "Message edited: $messageId")
         
-        val existing = dao.getMessageById(messageId)
+        val existing = messageDao.getMessageById(messageId)
         if (existing != null) {
             if (existing.isEditedLocally) {
                 Log.d(TAG, "Message is being edited locally, skipping server update: $messageId")
@@ -129,7 +126,7 @@ class MessageSignalRHandler @Inject constructor(
                 content = content,
                 lastUpdated = System.currentTimeMillis()
             )
-            dao.insertMessage(updated)
+            messageDao.insertMessage(updated)
             Log.d(TAG, "Updated edited message: $messageId")
         } else {
             Log.w(TAG, "Edited message not found in cache: $messageId")
@@ -139,12 +136,12 @@ class MessageSignalRHandler @Inject constructor(
     private suspend fun handleMessageDeleted(messageId: String, chatId: String) {
         Log.d(TAG, "Message deleted: $messageId")
         
-        val existing = dao.getMessageById(messageId)
+        val existing = messageDao.getMessageById(messageId)
         if (existing?.isDeletedLocally == true) {
-            dao.deleteMessage(messageId)
+            messageDao.deleteMessage(messageId)
             Log.d(TAG, "Completed local deletion: $messageId")
         } else {
-            dao.deleteMessage(messageId)
+            messageDao.deleteMessage(messageId)
             Log.d(TAG, "Removed deleted message from cache: $messageId")
         }
     }
@@ -156,13 +153,13 @@ class MessageSignalRHandler @Inject constructor(
         }
         
         Log.d(TAG, "Messages read in chat $chatId up to sequenceId $lastReadSequenceId")
-        dao.markMessagesAsRead(chatId, lastReadSequenceId)
+        messageDao.markMessagesAsRead(chatId, lastReadSequenceId)
     }
 
     private suspend fun handleReactionUpdated(messageId: String, emoji: String, isRemoved: Boolean) {
         Log.d(TAG, "Reaction ${if (isRemoved) "removed" else "added"}: $emoji on message $messageId")
         
-        val existing = dao.getMessageById(messageId)
+        val existing = messageDao.getMessageById(messageId)
         if (existing != null) {
             val reactions = gson.fromJson<Map<String, Int>>(existing.reactionsJson, Map::class.java) ?: emptyMap()
             val updatedReactions = reactions.toMutableMap()
@@ -182,7 +179,7 @@ class MessageSignalRHandler @Inject constructor(
                 reactionsJson = gson.toJson(updatedReactions),
                 lastUpdated = System.currentTimeMillis()
             )
-            dao.insertMessage(updated)
+            messageDao.insertMessage(updated)
             Log.d(TAG, "Updated reactions for message: $messageId")
         }
     }

client-mobile/chats/di/ChatModule.kt

@@ -33,11 +33,12 @@ object ChatModule {
     @Singleton
     fun provideMessageSignalRHandler(
         hubClient: ChatHubClient,
-        dao: MessageDao,
+        messageDao: MessageDao,
+        chatDao: ChatDao,
         serverConfig: ServerConfig,
         tokenManager: TokenManager
     ): MessageSignalRHandler {
-        return MessageSignalRHandler(hubClient, dao, serverConfig, tokenManager)
+        return MessageSignalRHandler(hubClient, messageDao, chatDao, serverConfig, tokenManager)
     }
 
     @Provides