Кэш чатов
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Халимов Рустам
@@ -1,113 +1,211 @@
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package chats.data.repository
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import android.content.Context
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import android.util.Log
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import androidx.paging.*
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import chats.data.paging.MessageRemoteMediator
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import chats.data.remote.api.ChatApi
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import chats.data.remote.api.SendMessageRequest
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import chats.data.remote.dto.ChatDto
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import chats.data.remote.dto.MessageDto
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import chats.data.remote.dto.MediaItemDto
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import chats.data.remote.dto.ReactionDto
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import chats.data.signalr.MessageSignalRHandler
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import chats.data.sync.MessageSyncWorker
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import chats.domain.model.Chat
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import chats.domain.model.Message
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import chats.domain.model.MediaType
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import chats.domain.repository.ChatRepository
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import core.database.data.ChatDatabase
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import core.database.data.MessageDao
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import core.database.data.MessageEntity
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import core.database.data.SyncStatus
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import core.network.ServerConfig
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import chats.data.remote.signalr.ReadMessagesRequest
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import chats.data.remote.signalr.ChatHubClient
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import core.security.TokenManager
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import com.google.gson.Gson
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import kotlinx.coroutines.flow.Flow
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import kotlinx.coroutines.flow.map
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import okhttp3.MediaType.Companion.toMediaTypeOrNull
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import okhttp3.MultipartBody
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import okhttp3.RequestBody.Companion.asRequestBody
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import java.text.SimpleDateFormat
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import java.util.*
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import javax.inject.Inject
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import kotlinx.coroutines.flow.map
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import javax.inject.Singleton
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/**
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* Основная реализация репозитория чатов
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*
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* Архитектура Offline-first:
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* 1. Все данные читаются из локальной базы Room
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* 2. При изменении данных - сначала запись в БД, потом синхронизация с сервером
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* 3. SignalR обновления сразу записываются в БД
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* 4. WorkManager обрабатывает фоновую синхронизацию
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*
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* Conflict Resolution:
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* - Серверные данные имеют приоритет над локальными
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* - Исключение: сообщения в процессе отправки (SYNCING) или редактирования
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*/
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@OptIn(ExperimentalPagingApi::class)
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@Singleton
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class ChatRepositoryImpl @Inject constructor(
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private val api: ChatApi,
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private val tokenManager: TokenManager,
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private val serverConfig: ServerConfig,
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private val messageDao: core.database.data.MessageDao,
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private val hubClient: chats.data.remote.signalr.ChatHubClient
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private val dao: MessageDao,
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private val database: ChatDatabase,
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private val hubClient: ChatHubClient,
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private val signalRHandler: MessageSignalRHandler,
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private val context: Context
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) : ChatRepository {
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private val gson = com.google.gson.Gson()
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private val gson = Gson()
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private val baseUrl = serverConfig.getBaseUrl().removeSuffix("/api/")
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init {
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signalRHandler.startListening()
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Log.d(TAG, "ChatRepositoryImpl initialized")
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}
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override suspend fun getChats(): List<Chat> {
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val currentUserId = tokenManager.getUserId() ?: ""
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val baseUrl = serverConfig.getBaseUrl().removeSuffix("/api/")
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return api.getChats().map { it.toDomain(currentUserId, baseUrl) }
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}
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override fun getMessagesFlow(chatId: String): kotlinx.coroutines.flow.Flow<List<Message>> {
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val baseUrl = serverConfig.getBaseUrl().removeSuffix("/api/")
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return messageDao.getMessages(chatId).map { entities: List<core.database.data.MessageEntity> ->
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override fun getMessagesPaging(chatId: String): Flow<PagingData<Message>> {
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val pagingConfig = PagingConfig(
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pageSize = 30,
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prefetchDistance = 10,
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initialLoadSize = 50,
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enablePlaceholders = false
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)
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return Pager(
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config = pagingConfig,
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pagingSourceFactory = { dao.getMessagesPagingSource(chatId) },
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remoteMediator = MessageRemoteMediator(
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chatId = chatId,
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api = api,
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database = database,
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dao = dao,
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serverConfig = serverConfig,
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tokenManager = tokenManager
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)
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).flow.map { pagingData ->
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pagingData.map { entity -> entity.toDomain(baseUrl, gson) }
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}
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}
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override fun getMessagesFlow(chatId: String): Flow<List<Message>> {
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return dao.getMessages(chatId).map { entities ->
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entities.map { it.toDomain(baseUrl, gson) }
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}
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}
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override suspend fun getMessages(chatId: String, cursor: String?, pivot: Long?, limit: Int?): List<Message> {
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val baseUrl = serverConfig.getBaseUrl().removeSuffix("/api/")
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override suspend fun getMessages(
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chatId: String, cursor: String?, pivot: Long?, limit: Int?
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): List<Message> {
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val currentUserId = tokenManager.getUserId() ?: ""
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return try {
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android.util.Log.d("ChatRepo", "FETCH: chatId=$chatId, cursor=$cursor, limit=$limit")
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Log.d(TAG, "Fetching messages from API: chatId=$chatId")
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val messages = api.getMessages(chatId, cursor = cursor, limit = limit)
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if (messages.isNotEmpty()) {
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android.util.Log.d("ChatRepo", "Received ${messages.size} messages. TopSeq: ${messages.first().sequenceId}, BottomSeq: ${messages.last().sequenceId}")
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val entities = messages.map { it.toEntity(baseUrl, currentUserId, gson) }
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dao.upsertMessages(entities)
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Log.d(TAG, "Cached ${entities.size} messages")
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}
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// Мапим в доменные модели. По умолчанию считаем прочитанными,
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// так как unreadCount нам тут не критичен для истории.
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messages.map { msg ->
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msg.toDomain(currentUserId, baseUrl).copy(isRead = true)
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}
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messages.map { msg -> msg.toDomain(currentUserId, baseUrl).copy(isRead = true) }
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} catch (e: Exception) {
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android.util.Log.e("ChatRepo", "Fetch messages failed", e)
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Log.e(TAG, "Fetch messages failed", e)
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emptyList()
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}
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}
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override suspend fun sendMessage(
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chatId: String,
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content: String?,
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type: String,
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chatId: String, content: String?, type: String,
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attachments: List<chats.data.remote.api.AttachmentRequest>?,
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replyToId: String?,
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forwardedFromId: String?
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replyToId: String?, forwardedFromId: String?
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): Message {
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val request = SendMessageRequest(
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content = content,
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type = type,
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attachments = attachments,
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replyToId = replyToId,
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forwardedFromId = forwardedFromId
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)
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val baseUrl = serverConfig.getBaseUrl().removeSuffix("/api/")
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val userId = tokenManager.getUserId() ?: ""
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return api.sendMessage(chatId, request).toDomain(userId, baseUrl)
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val currentTime = System.currentTimeMillis()
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val localId = "local_${currentTime}_${chatId}"
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val localMessage = MessageEntity(
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id = localId, chatId = chatId, senderId = userId,
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senderName = "Вы", senderAvatar = null, content = content,
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sequenceId = 0,
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createdAt = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US).format(Date(currentTime)),
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mediaType = type.uppercase(),
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mediaJson = "[]",
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reactionsJson = "{}",
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isRead = true, replyToId = replyToId,
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syncStatus = SyncStatus.SYNCING,
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isDeletedLocally = false, isEditedLocally = false,
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editedContent = null, lastUpdated = currentTime
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)
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dao.insertMessage(localMessage)
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Log.d(TAG, "Saved local message: $localId")
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MessageSyncWorker.scheduleSync(context)
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// Создаём доменную модель вручную для локального сообщения
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return Message(
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id = localId,
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chatId = chatId,
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senderId = userId,
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senderName = "Вы",
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senderAvatar = null,
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content = content,
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sequenceId = 0,
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createdAt = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US).format(Date(currentTime)),
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media = emptyList(),
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mediaType = when (type) {
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"image" -> MediaType.IMAGE
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"video" -> MediaType.VIDEO
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"audio" -> MediaType.AUDIO
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"gif" -> MediaType.GIF
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else -> MediaType.TEXT
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},
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reactions = emptyMap(),
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isRead = true,
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isPinned = false,
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isForwarded = false,
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forwardedFromName = null,
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replyTo = null
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)
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}
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override suspend fun addReaction(messageId: String, emoji: String) {
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api.addReaction(messageId, emoji)
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hubClient.addReaction(messageId, "", emoji)
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}
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override suspend fun sendTypingStatus(chatId: String) {
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api.sendTypingStatus(chatId)
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hubClient.sendTypingIndicator(chatId)
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}
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override suspend fun markMessagesAsRead(chatId: String, lastMessageId: String, lastReadSequenceId: Int) {
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try {
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android.util.Log.d("ChatRepoImpl", "markMessagesAsRead CALLED FOR $chatId. Caller stack: ${android.util.Log.getStackTraceString(Throwable())}")
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hubClient.readMessages(ReadMessagesRequest(chatId, lastMessageId, lastReadSequenceId))
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hubClient.readMessages(chats.data.remote.signalr.ReadMessagesRequest(chatId, lastMessageId, lastReadSequenceId))
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} catch (e: Exception) {
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android.util.Log.e("ChatRepo", "Error marking messages as read", e)
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Log.e(TAG, "Error marking messages as read", e)
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}
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// Обновляем локальную БД
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messageDao.markMessagesAsRead(chatId, lastReadSequenceId)
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dao.markMessagesAsRead(chatId, lastReadSequenceId)
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}
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override suspend fun saveMessage(message: Message) {
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android.util.Log.d("ChatRepo", "DB cache disabled, skipping save: ${message.id}")
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dao.insertMessage(message.toEntity(gson))
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}
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override suspend fun deleteLocalMessage(messageId: String) {
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messageDao.deleteMessage(messageId)
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dao.markAsDeletedLocally(messageId)
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MessageSyncWorker.scheduleSync(context)
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}
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override suspend fun editLocalMessage(messageId: String, newContent: String) {
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dao.markAsEditedLocally(messageId, newContent)
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MessageSyncWorker.scheduleSync(context)
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}
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override suspend fun uploadMedia(file: java.io.File): String {
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@@ -124,34 +222,36 @@ class ChatRepositoryImpl @Inject constructor(
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return api.uploadFile(body).url
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}
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override suspend fun getTrendingGifs(page: Int): List<chats.data.remote.api.KlipyGifDto> {
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return api.getTrendingGifs(page).data.data
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}
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override suspend fun getTrendingGifs(page: Int): List<chats.data.remote.api.KlipyGifDto> =
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api.getTrendingGifs(page).data.data
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override suspend fun searchGifs(query: String, page: Int): List<chats.data.remote.api.KlipyGifDto> {
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return api.searchGifs(query, page).data.data
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}
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override suspend fun searchGifs(query: String, page: Int): List<chats.data.remote.api.KlipyGifDto> =
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api.searchGifs(query, page).data.data
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override suspend fun getGifCategories(): List<chats.data.remote.api.GifCategoryDto> {
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return api.getGifCategories().data.categories
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}
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override suspend fun getGifCategories(): List<chats.data.remote.api.GifCategoryDto> =
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api.getGifCategories().data.categories
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override suspend fun createPersonalChat(userId: String): Chat {
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val currentUserId = tokenManager.getUserId() ?: ""
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val baseUrl = serverConfig.getBaseUrl().removeSuffix("/api/")
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val request = chats.data.remote.api.CreatePersonalChatRequest(userId)
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return api.createPersonalChat(request).toDomain(currentUserId, baseUrl)
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}
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override suspend fun deleteMessage(messageId: String, forEveryone: Boolean) {
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api.deleteMessage(messageId, forEveryone)
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messageDao.deleteMessage(messageId)
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dao.deleteMessage(messageId)
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}
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override suspend fun editMessage(messageId: String, content: String): Message {
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val request = SendMessageRequest(content = content)
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val currentUserId = tokenManager.getUserId() ?: ""
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val baseUrl = serverConfig.getBaseUrl().removeSuffix("/api/")
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return api.editMessage(messageId, request).toDomain(currentUserId, baseUrl)
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val response = api.editMessage(messageId, request)
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dao.insertMessage(response.toEntity(baseUrl, currentUserId, gson))
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return response.toDomain(currentUserId, baseUrl)
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}
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companion object {
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private const val TAG = "ChatRepositoryImpl"
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}
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}
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