auth to server-V20

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

@@ -1 +1,53 @@
 package com.example.login_v3.auth.login
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.login_v3.data.api.api_class.LoginRequest
+import com.example.login_v3.data.api.api_class.UserInfo
+import com.example.login_v3.data.repository.basic.AuthRepository
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+import javax.inject.Inject
+
+sealed class LoginUiState {
+    object Idle : LoginUiState()
+    object Loading : LoginUiState()
+    data class Success(val user: UserInfo) : LoginUiState()
+    data class Error(val message: String) : LoginUiState()
+}
+
+@HiltViewModel
+class AuthViewModel @Inject constructor(
+    private val repository: AuthRepository
+) : ViewModel() {
+
+    // 用於內部修改的私有狀態
+    private val _loginState = MutableStateFlow<LoginUiState>(LoginUiState.Idle)
+    // 暴露給 Compose 觀察的公開狀態
+    val loginState: StateFlow<LoginUiState> = _loginState.asStateFlow()
+
+    fun login(username: String, password: String) {
+        viewModelScope.launch {
+            _loginState.value = LoginUiState.Loading
+
+            try {
+                val request = LoginRequest(username = username, password = password)
+                val response = repository.login(request)
+
+                if (response.isSuccessful && response.body() != null) {
+                    // 登入成功，儲存 User 資訊
+                    _loginState.value = LoginUiState.Success(response.body()!!.user)
+
+                    // 提示：通常這裡還會處理 Token 持久化（儲存在 DataStore 或 EncryptedSharedPreferences）
+                } else {
+                    _loginState.value = LoginUiState.Error("登入失敗：${response.code()}")
+                }
+            } catch (e: Exception) {
+                _loginState.value = LoginUiState.Error("網路異常：${e.localizedMessage}")
+            }
+        }
+    }
+}

app/src/main/java/com/example/login_v3/data/api/api_class/AuthRequest_Response.kt

@@ -2,6 +2,10 @@ package com.example.login_v3.data.api.api_class
 
 import com.squareup.moshi.Json
 import com.squareup.moshi.JsonClass
+
+
+
+//login data
 @JsonClass(generateAdapter = true)
 data class LoginRequest(
     val username: String,
@@ -9,10 +13,30 @@ data class LoginRequest(
 )
 @JsonClass(generateAdapter = true)
 data class LoginResponse(
+    val access_token: String,
+    val expires_in: Int,
+    val refresh_token: String,
     val token: String,
-    val userId: String
+    val user: UserInfo
+)
+@JsonClass(generateAdapter = true)
+data class UserInfo(
+    val id: String,
+    val username: String,
+    val display_name: String,
+    val email: String,
+    val avatar_url: String,
+    val banner_url: String,
+    val bio: String,
+    val status: String,
+    val is_verified: Boolean,
+    val created_at: String
 )
 
+
+
+
+//register data
 @JsonClass(generateAdapter = true)
 data class RegisterRequest(
     val display_name: String,
@@ -20,7 +44,6 @@ data class RegisterRequest(
     val password: String,
     val username: String
 )
-
 @JsonClass(generateAdapter = true)
 data class RegisterResponse(
     @field:Json(name = "id") val id: String,