Офлайн режим, начало

client-mobile/core/database/data/ChatDatabase.kt

@@ -13,6 +13,23 @@ enum class SyncStatus {
     FAILED       // Ошибка синхронизации
 }
 
+/**
+ * Entity для хранения чатов в локальной базе данных
+ */
+@Entity(tableName = "chats")
+data class ChatEntity(
+    @PrimaryKey val id: String,
+    val name: String,
+    val avatar: String?,
+    val type: String = "personal", // personal, group, saved
+    val lastMessageId: String? = null,
+    val lastMessageText: String? = null,
+    val lastMessageAt: Long = 0,
+    val unreadCount: Int = 0,
+    val isPinned: Boolean = false,
+    val lastUpdated: Long = System.currentTimeMillis()
+)
+
 /**
  * Entity для хранения сообщений в локальной базе данных
  * Поддерживает офлайн-работу и фоновую синхронизацию
@@ -187,10 +204,44 @@ interface MessageDao {
     suspend fun exists(id: String): Boolean
 }
 
-@Database(entities = [MessageEntity::class], version = 2)
+@Dao
+interface ChatDao {
+    @Query("SELECT * FROM chats ORDER BY isPinned DESC, lastMessageAt DESC")
+    fun getAllChatsFlow(): Flow<List<ChatEntity>>
+    
+    @Query("SELECT * FROM chats ORDER BY isPinned DESC, lastMessageAt DESC")
+    suspend fun getAllChats(): List<ChatEntity>
+    
+    @Query("SELECT * FROM chats WHERE id = :chatId LIMIT 1")
+    suspend fun getChatById(chatId: String): ChatEntity?
+    
+    @Query("SELECT * FROM chats WHERE id = :chatId LIMIT 1")
+    fun getChatByIdFlow(chatId: String): Flow<ChatEntity?>
+    
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insertChat(chat: ChatEntity)
+    
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insertChats(chats: List<ChatEntity>)
+    
+    @Query("DELETE FROM chats WHERE id = :chatId")
+    suspend fun deleteChat(chatId: String)
+    
+    @Query("DELETE FROM chats")
+    suspend fun clearAll()
+    
+    @Query("UPDATE chats SET unreadCount = :count WHERE id = :chatId")
+    suspend fun updateUnreadCount(chatId: String, count: Int)
+    
+    @Query("UPDATE chats SET lastMessageId = :lastMessageId, lastMessageText = :lastMessageText, lastMessageAt = :lastMessageAt WHERE id = :chatId")
+    suspend fun updateLastMessage(chatId: String, lastMessageId: String?, lastMessageText: String?, lastMessageAt: Long)
+}
+
+@Database(entities = [MessageEntity::class, ChatEntity::class], version = 3)
 @TypeConverters(SyncStatusConverter::class)
 abstract class ChatDatabase : RoomDatabase() {
     abstract fun messageDao(): MessageDao
+    abstract fun chatDao(): ChatDao
     
     companion object {
         const val DATABASE_NAME = "knot_chat_database"

client-mobile/core/database/data/Migrations.kt

@@ -37,3 +37,26 @@ val MIGRATION_1_2 = object : Migration(1, 2) {
         """.trimIndent())
     }
 }
+
+/**
+ * Миграция с версии 2 на версию 3
+ * Добавляет таблицу chats для кэширования списка чатов
+ */
+val MIGRATION_2_3 = object : Migration(2, 3) {
+    override fun migrate(database: SupportSQLiteDatabase) {
+        database.execSQL("""
+            CREATE TABLE IF NOT EXISTS chats (
+                id TEXT PRIMARY KEY NOT NULL,
+                name TEXT NOT NULL,
+                avatar TEXT,
+                type TEXT NOT NULL DEFAULT 'personal',
+                lastMessageId TEXT,
+                lastMessageText TEXT,
+                lastMessageAt INTEGER NOT NULL DEFAULT 0,
+                unreadCount INTEGER NOT NULL DEFAULT 0,
+                isPinned INTEGER NOT NULL DEFAULT 0,
+                lastUpdated INTEGER NOT NULL DEFAULT 0
+            )
+        """.trimIndent())
+    }
+}

client-mobile/core/di/DatabaseModule.kt

@@ -5,6 +5,7 @@ import androidx.room.Room
 import core.database.data.ChatDatabase
 import core.database.data.MessageDao
 import core.database.data.MIGRATION_1_2
+import core.database.data.MIGRATION_2_3
 import dagger.Module
 import dagger.Provides
 import dagger.hilt.InstallIn
@@ -24,7 +25,7 @@ object DatabaseModule {
             ChatDatabase::class.java,
             ChatDatabase.DATABASE_NAME
         )
-            .addMigrations(MIGRATION_1_2)
+            .addMigrations(MIGRATION_1_2, MIGRATION_2_3)
             .build()
     }