auth to server-V90

app/src/main/java/com/example/login_v3/auth/login/Login_Page.kt

@@ -77,7 +77,7 @@ fun LoginScreen(
 
 
 
-
+    //background
     Column(
         modifier = Modifier
             .fillMaxSize()

app/src/main/java/com/example/login_v3/auth/login/Login_Page_ViewModel.kt

@@ -8,8 +8,10 @@ import com.example.login_v3.data.repository.basic.AuthRepository
 import com.example.login_v3.data.repository.basic.TokenManager
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.launch
 import javax.inject.Inject
 
@@ -23,12 +25,20 @@ sealed class LoginUiState {
 @HiltViewModel
 class AuthViewModel @Inject constructor(
     private val repository: AuthRepository,
-    private val tokenManager: TokenManager // 注入 TokenManager
+    private val tokenManager: TokenManager
 ) : ViewModel() {
 
     private val _loginState = MutableStateFlow<LoginUiState>(LoginUiState.Idle)
     val loginState: StateFlow<LoginUiState> = _loginState.asStateFlow()
 
+    // --- 新增：供 UI 顯示所有已登入帳號與當前帳號 ---
+    val allUserIds: StateFlow<Set<String>> = tokenManager.allUserIds
+        .stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), emptySet())
+
+    val currentUserId: StateFlow<String?> = tokenManager.currentUserId
+        .stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), null)
+    // ------------------------------------------
+
     fun login(username: String, password: String) {
         viewModelScope.launch {
             _loginState.value = LoginUiState.Loading
@@ -39,10 +49,15 @@ class AuthViewModel @Inject constructor(
                 if (response.isSuccessful && response.body() != null) {
                     val loginResponse = response.body()!!
 
-                    // 1. 先把 Token 存入 DataStore
-                    tokenManager.saveAuthData(loginResponse.access_token)
+                    // 修改：存入 token 時同時存入 userId (假設你的 user 物件裡有 id)
+                    // 如果 LoginResponse 沒給 id，也可以用 username 作為唯一識別碼
+                    val userId = loginResponse.user.id.toString()
+
+                    tokenManager.saveAuthData(
+                        userId = userId,
+                        token = loginResponse.access_token
+                    )
 
-                    // 2. 更新 UI 狀態
                     _loginState.value = LoginUiState.Success(loginResponse.user)
                 } else {
                     _loginState.value = LoginUiState.Error("登入失敗：${response.code()}")
@@ -52,4 +67,19 @@ class AuthViewModel @Inject constructor(
             }
         }
     }
+
+    // --- 新增：切換帳號功能 ---
+    fun switchAccount(userId: String) {
+        viewModelScope.launch {
+            tokenManager.switchAccount(userId)
+            // 切換後，通常會需要重新初始化某些頁面資料，或發送一個事件通知 UI
+        }
+    }
+
+    // --- 新增：登出功能 ---
+    fun logout(userId: String) {
+        viewModelScope.launch {
+            tokenManager.logout(userId)
+        }
+    }
 }

app/src/main/java/com/example/login_v3/data/di/NetworkModule.kt

@@ -46,20 +46,30 @@ object NetworkModule {
     @Singleton
     fun provideOkHttpClient(tokenManager: TokenManager): OkHttpClient {
         return OkHttpClient.Builder()
-            .connectTimeout(15, TimeUnit.SECONDS) // 連線逾時
-            .readTimeout(15, TimeUnit.SECONDS)    // 讀取逾時
+            .connectTimeout(15, TimeUnit.SECONDS)
+            .readTimeout(15, TimeUnit.SECONDS)
             .addInterceptor { chain ->
-                val token = runBlocking { tokenManager.accessToken.first() }
-                val requestBuilder = chain.request().newBuilder()
+                // 1. 動態獲取「目前選中帳號」的 Token
+                // 使用 first() 確保只取目前最新的那一個值
+                val token = runBlocking { tokenManager.currentAccessToken.first() }
 
+                val requestBuilder = chain.request().newBuilder()
                 token?.let {
                     requestBuilder.addHeader("Authorization", "Bearer $it")
                 }
 
                 val response = chain.proceed(requestBuilder.build())
 
+                // 2. 處理 Token 失效 (401)
                 if (response.code == 401) {
-                    runBlocking { tokenManager.clearAuthData() }
+                    runBlocking {
+                        // 獲取目前是哪個 ID 失效了
+                        val currentId = tokenManager.currentUserId.first()
+                        currentId?.let {
+                            // 只登出當前失效的帳號，不影響其他帳號
+                            tokenManager.logout(it)
+                        }
+                    }
                 }
 
                 response

app/src/main/java/com/example/login_v3/data/repository/basic/Token_Manager.kt

@@ -20,11 +20,10 @@ class TokenManager @Inject constructor(
         preferences[USER_ID_LIST] ?: emptySet()
     }
 
+    // TokenManager 內部建議改動
     companion object {
-        // 1. 記錄目前正在使用的 UserId
+        private val USER_ID_LIST = stringSetPreferencesKey("user_id_list") // 移到這裡
         private val CURRENT_USER_ID = stringPreferencesKey("current_user_id")
-
-        // 2. 輔助函式：根據 userId 動態產生 Token 的 Key
         private fun accessTokenKey(userId: String) = stringPreferencesKey("access_token_$userId")
     }