dm-103

app/src/main/java/com/example/login_v3/home/Message/ViewModel/Detail/Message_Cache.kt

@@ -28,13 +28,23 @@ data class MessageEntity(
 
 @Dao
 interface MessageDao {
-    // 💡 修正這裡：WHERE 條件欄位改為 chatRoomId
-    @Query("SELECT * FROM messages WHERE chatRoomId = :roomId ORDER BY createdAt DESC") // 👈 確保是 DESC（降序）
+    // 1. 根據 roomId 監聽整個聊天室的訊息 Flow
+    @Query("SELECT * FROM messages WHERE chatRoomId = :roomId ORDER BY createdAt DESC")
     fun getMessagesFlow(roomId: String): Flow<List<MessageEntity>>
 
+    // 2. ✨【新增】根據訊息 id 查詢單筆資料（樂觀更新備份用）
+    @Query("SELECT * FROM messages WHERE id = :messageId LIMIT 1")
+    suspend fun getMessageById(messageId: String): MessageEntity?
+
+    // 3. 插入或更新單筆訊息
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     suspend fun insertOrUpdate(message: MessageEntity)
 
+    // 4. ✨【優化】支援批次插入或更新（可以順便把 refreshChatMessages 裡面的 forEach 換掉，效能更好）
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insertOrUpdateList(messages: List<MessageEntity>)
+
+    // 5. 根據 id 刪除特定訊息
     @Query("DELETE FROM messages WHERE id = :id")
     suspend fun deleteById(id: String)
 }