Подгрузка старых сообщений

client-mobile/chats/data/remote/api/ChatApi.kt

@@ -27,6 +27,7 @@ interface ChatApi {
     suspend fun getMessages(
         @Path("chatId") chatId: String,
         @Query("cursor") cursor: String? = null,
+        @Query("pivot") pivot: Long? = null,
         @Query("limit") limit: Int? = 50
     ): List<MessageDto>
 

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

@@ -41,27 +41,24 @@ class ChatRepositoryImpl @Inject constructor(
         }
     }
 
-    override suspend fun getMessages(chatId: String, cursor: String?, limit: Int?): List<Message> {
+    override suspend fun getMessages(chatId: String, cursor: String?, pivot: Long?, limit: Int?): List<Message> {
         val baseUrl = serverConfig.getBaseUrl().removeSuffix("/api/")
         val currentUserId = tokenManager.getUserId() ?: ""
         return try {
-            val chats = api.getChats()
-            val chatDto = chats.find { it.id == chatId }
-            val unreadCount = chatDto?.unreadCount ?: 0
-            
-            android.util.Log.d("ChatRepo", "Fetching messages from network for chat: $chatId, cursor: $cursor")
+            android.util.Log.d("ChatRepo", "FETCH: chatId=$chatId, cursor=$cursor, limit=$limit")
             val messages = api.getMessages(chatId, cursor = cursor, limit = limit)
+            
             if (messages.isNotEmpty()) {
-                android.util.Log.d("ChatRepo", "Received ${messages.size} messages. First: ${messages.first().createdAt}, Last: ${messages.last().createdAt}")
+                android.util.Log.d("ChatRepo", "Received ${messages.size} messages. TopSeq: ${messages.first().sequenceId}, BottomSeq: ${messages.last().sequenceId}")
             }
             
-            // Определяем, какие сообщения считаются прочитанными
-            val mappedMessages = messages.mapIndexed { index, msg ->
-                val isUnread = (messages.size - index) <= unreadCount && msg.senderId != currentUserId
-                msg.toDomain(currentUserId, baseUrl).copy(isRead = !isUnread)
+            // Мапим в доменные модели. По умолчанию считаем прочитанными, 
+            // так как unreadCount нам тут не критичен для истории.
+            messages.map { msg ->
+                msg.toDomain(currentUserId, baseUrl).copy(isRead = true)
             }
-            mappedMessages
         } catch (e: Exception) {
+            android.util.Log.e("ChatRepo", "Fetch messages failed", e)
             emptyList()
         }
     }

client-mobile/chats/domain/repository/ChatRepository.kt

@@ -6,7 +6,7 @@ import chats.domain.model.Message
 interface ChatRepository {
     suspend fun getChats(): List<Chat>
     fun getMessagesFlow(chatId: String): kotlinx.coroutines.flow.Flow<List<Message>>
-    suspend fun getMessages(chatId: String, cursor: String? = null, limit: Int? = null): List<Message>
+    suspend fun getMessages(chatId: String, cursor: String? = null, pivot: Long? = null, limit: Int? = null): List<Message>
     suspend fun sendMessage(
         chatId: String, 
         content: String?, 

client-mobile/chats/presentation/chat_detail/ChatDetailScreen.kt

@@ -221,14 +221,18 @@ fun ChatDetailScreen(
     }
 
     // Подгрузка истории при прокрутке вверх
-    LaunchedEffect(listState) {
-        snapshotFlow { listState.layoutInfo.visibleItemsInfo.lastOrNull()?.index }
-            .collect { lastVisibleIndex ->
-                if (lastVisibleIndex != null && lastVisibleIndex >= listItems.size - 10 && listItems.size >= 15) {
-                    android.util.Log.d("ChatDetailScreen", "TRIGGER LOAD MORE: index $lastVisibleIndex, size ${listItems.size}")
-                    viewModel.loadMoreMessages()
-                }
+    LaunchedEffect(listState, state.messages.size) {
+        snapshotFlow { 
+            val lastIndex = listState.layoutInfo.visibleItemsInfo.lastOrNull()?.index ?: 0
+            val totalCount = listState.layoutInfo.totalItemsCount
+            lastIndex to totalCount
+        }
+        .collect { (lastVisibleIndex, totalCount) ->
+            if (totalCount > 0 && lastVisibleIndex >= totalCount - 20 && !state.isLoadingMore) {
+                android.util.Log.d("ChatDetailScreen", "TRIGGER LOAD MORE: index $lastVisibleIndex, total $totalCount")
+                viewModel.loadMoreMessages()
             }
+        }
     }
 
     val unreadCount = remember(state.messages) {