dm-19

app/src/main/java/com/example/login_v3/data/repository/dm/DM_Basic_Repository.kt

@@ -1,6 +1,7 @@
 package com.example.login_v3.data.repository.dm
 
 import com.example.login_v3.data.api.TecnologiaApi
+import com.example.login_v3.data.api.api_class.ChatRoom
 import com.example.login_v3.data.api.api_class.MessageResponse
 import com.example.login_v3.data.api.api_class.RoomListResponse
 import javax.inject.Inject
@@ -48,4 +49,19 @@ class ChatRoomsRepository @Inject constructor(
             Result.failure(e)
         }
     }
+
+    // 在 ChatRoomsRepository 裡面加入：
+    suspend fun getChatRoom(roomId: String): Result<ChatRoom?> {
+        return try {
+            // 呼叫你原本就有的 fetchRooms() 獲取所有房間
+            val responseResult = fetchRooms()
+
+            responseResult.map { roomListResponse ->
+                // 從列表裡面找出 roomId 相同的那間房間
+                roomListResponse.rooms.find { it.roomId == roomId }
+            }
+        } catch (e: Exception) {
+            Result.failure(e)
+        }
+    }
 }

app/src/main/java/com/example/login_v3/home/Message/UI/Detail/Message_Messaging.kt

@@ -10,12 +10,18 @@ import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.widthIn
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
+import androidx.compose.material.icons.filled.ArrowBack
 import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Scaffold
@@ -30,18 +36,17 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
-import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import com.example.login_v3.data.api.api_class.Message
 import com.example.login_v3.home.Message.ViewModel.Detail.ChatViewModel
 import com.example.login_v3.home.Message.ViewModel.Detail.MessagesUiState
+import com.example.login_v3.home.Message.ViewModel.UserStatus
 import com.example.login_v3.navigation.Screen
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun MessageMessaging(
     roomId: String,
-    roomName: String,
     navController: NavController,
     onBackClick: () -> Unit,
     viewModel: ChatViewModel = hiltViewModel()
@@ -51,12 +56,47 @@ fun MessageMessaging(
     LaunchedEffect(roomId) {
         viewModel.loadMessages(roomId)
     }
+    // 根據目前的 uiState 來動態決定 TopBar 要顯示什麼文字
+    val topBarTitle = when (val state = uiState) {
+        is MessagesUiState.Success -> state.roomTitle
+        is MessagesUiState.Error -> "載入失敗"
+        is MessagesUiState.Loading -> "載入中..."
+    }
 
     Scaffold(
         topBar = {
             TopAppBar(
-                //need to be sender id
+                title = {
-                title = { Text(roomName) },
+                    Row(
+                        verticalAlignment = Alignment.CenterVertically,
+                        horizontalArrangement = Arrangement.spacedBy(8.dp)
+                    ) {
+                        Text(text = topBarTitle)
+
+                        // ✨ 如果是 Success 狀態，且對方是在線狀態（ONLINE），就顯示綠色小圓點
+                        if (uiState is MessagesUiState.Success) {
+                            val successState = uiState as MessagesUiState.Success
+                            if (successState.partnerStatus == UserStatus.ONLINE) {
+                                Box(
+                                    modifier = Modifier
+                                        .size(10.dp)
+                                        .background(
+                                            color = UserStatus.ONLINE.color,
+                                            shape = CircleShape
+                                        )
+                                )
+                            }
+                        }
+                    }
+                },
+                navigationIcon = {
+                    IconButton(onClick = onBackClick) {
+                        Icon(
+                            imageVector = Icons.Default.ArrowBack,
+                            contentDescription = "返回"
+                        )
+                    }
+                }
             )
         }
     ) { innerPadding ->
@@ -66,6 +106,7 @@ fun MessageMessaging(
                 .padding(innerPadding),
             contentAlignment = Alignment.Center
         ) {
+            // 根據不同的狀態渲染主畫面內容
             when (val state = uiState) {
                 is MessagesUiState.Loading -> {
                     CircularProgressIndicator()
@@ -74,6 +115,7 @@ fun MessageMessaging(
                     if (state.messages.isEmpty()) {
                         Text("目前沒有新訊息")
                     } else {
+                        // ⚠️ 記得把原來的 state.messages 傳進去
                         MessageList(messages = state.messages)
                     }
                 }

app/src/main/java/com/example/login_v3/home/Message/UI/Message.kt

@@ -79,6 +79,7 @@ import com.example.login_v3.home.Message.UI.Detail.Message_add_contact
 import com.example.login_v3.home.Message.UI.Detail.Message_contact_list
 import com.example.login_v3.home.Message.UI.Detail.Scan_QRcode
 import com.example.login_v3.home.Message.ViewModel.ChatRoomsViewModel
+import com.example.login_v3.home.Message.ViewModel.UserStatus
 import com.example.login_v3.navigation.BottomBarViewModel
 
 
@@ -87,9 +88,9 @@ sealed class Screen(val route: String) {
     object CreateContact : Screen("create_contact")
     object FriendsList : Screen("friends_list")
     object ScanQRcode : Screen("scan_QRcode")
-    object MessageMessaging : Screen("message_messaging?roomId={roomId}&roomName={roomName}") {
+    object MessageMessaging : Screen("message_messaging?roomId={roomId}") {
-        fun createRoute(roomId: String, roomName: String): String {
+        fun createRoute(roomId: String): String {
-            return "message_messaging?roomId=$roomId&roomName=$roomName"
+            return "message_messaging?roomId=$roomId"
         }
     }
 }
@@ -108,9 +109,9 @@ fun Tg_Message(
         composable(Screen.Messages.route) {
             Loaded_Tg_Message(
                 navController = navController,
-                // 🚀 完美接起傳出來的兩個參數，不再發生 No value passed 的狀況！
+                // ✨ 2. 這裡的點擊事件如果原本有傳 roomName，現在直接忽略，只傳 roomId 給路由
-                onRoomClick = { roomId, roomName ->
+                onRoomClick = { roomId, _ ->
-                    val route = Screen.MessageMessaging.createRoute(roomId, roomName)
+                    val route = Screen.MessageMessaging.createRoute(roomId)
                     navController.navigate(route)
                 }
             )
@@ -138,26 +139,19 @@ fun Tg_Message(
         composable(
             route = Screen.MessageMessaging.route,
             arguments = listOf(
+                // ✨ 3. 只保留 roomId 的參數宣告，完全刪除 roomName 的 navArgument
                 navArgument("roomId") {
                     type = NavType.StringType
                     nullable = true
                     defaultValue = ""
-                },
-                // 🚀 修正：新增接收 roomName 的導航參數
-                navArgument("roomName") {
-                    type = NavType.StringType
-                    nullable = true
-                    defaultValue = "聊天室"
                 }
             )
         ) { backStackEntry ->
             val roomId = backStackEntry.arguments?.getString("roomId").orEmpty()
-            // 🚀 修正：抓取名字
-            val roomName = backStackEntry.arguments?.getString("roomName") ?: "聊天室"
 
+            // ✨ 4. 呼叫新版的 MessageMessaging，不再傳入 roomName 參數
             MessageMessaging(
                 roomId = roomId,
-                roomName = roomName, // 🚀 傳入 UI 中
                 navController = navController,
                 onBackClick = {
                     navController.popBackStack()
@@ -461,21 +455,3 @@ fun RoomItem(
         }
     }
 }
-
-enum class UserStatus(val color: Color) {
-    ONLINE(Color.Green),
-    AWAY(Color.Yellow),
-    OFFLINE(Color.Gray),
-    UNKNOWN(Color.DarkGray);
-
-    companion object {
-        fun fromString(status: String?): UserStatus {
-            return when (status?.lowercase()) {
-                "online" -> ONLINE
-                "away" -> AWAY
-                "offline" -> OFFLINE
-                else -> UNKNOWN
-            }
-        }
-    }
-}

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

@@ -9,6 +9,7 @@ import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.launch
 import javax.inject.Inject
 import com.example.login_v3.data.api.api_class.Message
+import com.example.login_v3.home.Message.ViewModel.UserStatus
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
@@ -16,7 +17,11 @@ import kotlinx.coroutines.flow.asStateFlow
 
 sealed interface MessagesUiState {
     object Loading : MessagesUiState
-    data class Success(val messages: List<Message>) : MessagesUiState
+    data class Success(
+        val roomTitle: String,
+        val partnerStatus: UserStatus,
+        val messages: List<Message>
+    ) : MessagesUiState
     data class Error(val message: String) : MessagesUiState
 }
 
@@ -29,19 +34,40 @@ class ChatViewModel @Inject constructor(
     val uiState: StateFlow<MessagesUiState> = _uiState.asStateFlow()
 
     fun loadMessages(roomId: String) {
-
         viewModelScope.launch {
             _uiState.value = MessagesUiState.Loading
 
-            repository.getChatMessages(roomId)
+            // 1. 同時獲取房間資訊與訊息列表
-                .onSuccess { response ->
+            val roomResult = repository.getChatRoom(roomId) // ⚠️ 需確保 Repository 有提供此方法
+            val messagesResult = repository.getChatMessages(roomId)
 
-                    _uiState.value = MessagesUiState.Success(messages = response.messages)
+            if (messagesResult.isSuccess) {
-                }
+                val messagesResponse = messagesResult.getOrNull()!!
-                .onFailure { exception ->
 
-                    _uiState.value = MessagesUiState.Error(message = exception.message ?: "未知錯誤")
+                // 2. 根據房間資訊決定標題邏輯
+                val room = roomResult.getOrNull()
+                val (title, status) = if (room != null) {
+                    if (room.roomType == "DM") {
+                        val name = room.partner?.displayName ?: room.partner?.username ?: "未知用戶"
+                        val userStatus = UserStatus.fromString(room.partner?.status)
+                        Pair(name, userStatus)
+                    } else {
+                        Pair(room.roomName ?: "未命名群組", UserStatus.UNKNOWN)
+                    }
+                } else {
+                    // 如果真的拿不到房間資訊，給個安全預設值
+                    Pair("聊天室", UserStatus.UNKNOWN)
                 }
+
+                _uiState.value = MessagesUiState.Success(
+                    roomTitle = title,
+                    partnerStatus = status,
+                    messages = messagesResponse.messages
+                )
+            } else {
+                val exception = messagesResult.exceptionOrNull()
+                _uiState.value = MessagesUiState.Error(message = exception?.message ?: "未知錯誤")
+            }
         }
     }
 }

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

@@ -2,6 +2,7 @@
 package com.example.login_v3.home.Message.ViewModel
 
 import android.util.Log
+import androidx.compose.ui.graphics.Color
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.example.login_v3.R
@@ -41,3 +42,22 @@ class ChatRoomsViewModel @Inject constructor(
     }
 }
 
+enum class UserStatus(val color: Color) {
+    ONLINE(Color.Green),
+    OFFLINE(Color.Gray),
+    UNKNOWN(Color.Transparent); // 或者是你原本設定的顏色
+
+    companion object {
+        fun fromString(status: String?): UserStatus {
+            if (status == null) return UNKNOWN
+
+            // 使用 try-catch 或者是 safe valueOf 確保絕對不閃退
+            return try {
+                // uppercase() 預防後端一下給大寫一下給小寫 (例如 "online" vs "ONLINE")
+                valueOf(status.uppercase())
+            } catch (e: IllegalArgumentException) {
+                UNKNOWN // 找不到對應的狀態就安全地回傳 UNKNOWN
+            }
+        }
+    }
+}