7주차 미션/안드로이드 2조 이시헌

app/src/main/AndroidManifest.xml

@@ -7,13 +7,15 @@
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 
     <!-- 이미지 선택을 위한 권한 (Android 13 이상) -->
-    <uses-permission android:name="android.permission.READ_MEDIA_IMAGES" />
+    <uses-permission android:name="android.permission.READ_MEDIA_IMAGES"
+        tools:ignore="PhotoAndVideoPolicy,SelectedPhotoAccess" />
 
     <!-- Android 12 이하를 위한 권한 -->
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"
         android:maxSdkVersion="32" />
 
     <application
+        android:name=".App"
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"

app/src/main/java/com/example/kuit6_android_api/App.kt

@@ -0,0 +1,13 @@
+package com.example.kuit6_android_api
+
+import android.app.Application
+import com.example.kuit6_android_api.data.di.AppContainer
+
+class App : Application() {
+    lateinit var container: AppContainer
+
+    override fun onCreate() {
+        super.onCreate()
+        container = AppContainer()
+    }
+}

app/src/main/java/com/example/kuit6_android_api/data/api/ApiService.kt

@@ -19,7 +19,7 @@ interface ApiService {
     @DELETE("/api/posts/{id}")
     suspend fun deletePost(
         @Path("id") id: Long
-    ): BaseResponse<Unit> // data에 빈 객체 반환
+    ): BaseResponse<PostResponse> // data에 빈 객체 반환
 
     @GET("/api/posts/{id}")
     suspend fun getPostDetail(

app/src/main/java/com/example/kuit6_android_api/data/di/AppContainer.kt

@@ -0,0 +1,16 @@
+package com.example.kuit6_android_api.data.di
+
+import com.example.kuit6_android_api.data.api.ApiService
+import com.example.kuit6_android_api.data.api.RetrofitClient
+import com.example.kuit6_android_api.data.repository.PostRepository
+import com.example.kuit6_android_api.data.repository.PostRepositoryImpl
+
+class AppContainer{
+    private val apiService: ApiService by lazy{
+        RetrofitClient.apiService
+    }
+
+    val postRepository: PostRepository by lazy {
+        PostRepositoryImpl(apiService)
+    }
+}

app/src/main/java/com/example/kuit6_android_api/data/repository/PostRepository.kt

@@ -0,0 +1,12 @@
+package com.example.kuit6_android_api.data.repository
+
+import com.example.kuit6_android_api.data.model.request.PostCreateRequest
+import com.example.kuit6_android_api.data.model.response.PostResponse
+
+interface PostRepository{
+    suspend fun getPosts(): Result<List<PostResponse>>
+    suspend fun getPostDetail(postId: Long): Result<PostResponse>
+    suspend fun createPost(author: String, request: PostCreateRequest): Result<PostResponse>
+    suspend fun updatePost(postId: Long, request: PostCreateRequest): Result<PostResponse>
+    suspend fun deletePost(postId: Long): Result<PostResponse>
+}

app/src/main/java/com/example/kuit6_android_api/data/repository/PostRepositoryImpl.kt

@@ -0,0 +1,83 @@
+package com.example.kuit6_android_api.data.repository
+
+import android.util.Log
+import com.example.kuit6_android_api.data.api.ApiService
+import com.example.kuit6_android_api.data.model.request.PostCreateRequest
+import com.example.kuit6_android_api.data.model.response.PostResponse
+
+class PostRepositoryImpl(
+    private val apiService: ApiService
+): PostRepository{
+    override suspend fun getPosts(): Result<List<PostResponse>> {
+        return runCatching {
+            val response = apiService.getPosts()
+
+            if(response.success && response.data != null){
+                response.data
+            }else{
+                throw Exception(response.message ?: "게시글 불러오기 실패")
+            }
+        }.onFailure { error ->
+            Log.e("PostRepository", error.message.toString())
+        }
+    }
+
+    override suspend fun getPostDetail(postId: Long): Result<PostResponse> {
+        return runCatching {
+            val response = apiService.getPostDetail(postId)
+
+            if (response.success && response.data != null){
+                response.data
+            } else{
+                throw Exception(response.message ?: "삭제 실패")
+            }
+        }.onFailure { error ->
+            Log.e("PostRepository", error.message.toString())
+        }
+    }
+
+    override suspend fun createPost(
+        author: String,
+        request: PostCreateRequest
+    ): Result<PostResponse> {
+        return runCatching {
+            val response = apiService.createPost(author, request)
+            if (response.success && response.data != null){
+                response.data
+            } else{
+                throw Exception(response.message ?: "생성 실패")
+            }
+        }.onFailure { error ->
+            Log.e("PostRepository", error.message.toString())
+        }
+    }
+
+    override suspend fun updatePost(
+        postId: Long,
+        request: PostCreateRequest
+    ): Result<PostResponse> {
+        return runCatching {
+            val response = apiService.updatePost(postId, request)
+            if (response.success && response.data != null){
+                response.data
+            }else{
+                throw Exception(response.message ?: "업데이트 실패")
+            }
+        }.onFailure { error ->
+            Log.e("PostRepository", error.message.toString())
+        }
+    }
+
+    override suspend fun deletePost(postId: Long): Result<PostResponse> {
+        return runCatching {
+            val response = apiService.deletePost(postId)
+            if (response.success && response.data != null){
+                response.data
+            }else{
+                throw Exception(response.message ?: "삭제 실패")
+            }
+        }.onFailure { error ->
+            Log.e("PostRepository", error.message.toString())
+        }
+    }
+}

app/src/main/java/com/example/kuit6_android_api/ui/navigation/NavGraph.kt

@@ -2,7 +2,7 @@ package com.example.kuit6_android_api.ui.navigation
 
 import androidx.compose.material3.SnackbarHostState
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.MutableState
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavHostController
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
@@ -11,6 +11,11 @@ import com.example.kuit6_android_api.ui.post.screen.PostCreateScreen
 import com.example.kuit6_android_api.ui.post.screen.PostDetailScreen
 import com.example.kuit6_android_api.ui.post.screen.PostEditScreen
 import com.example.kuit6_android_api.ui.post.screen.PostListScreen
+import com.example.kuit6_android_api.ui.post.viewmodel.PostCreateViewModel
+import com.example.kuit6_android_api.ui.post.viewmodel.PostDetailViewModel
+import com.example.kuit6_android_api.ui.post.viewmodel.PostEditViewModel
+import com.example.kuit6_android_api.ui.post.viewmodel.PostListViewModel
+import com.example.kuit6_android_api.ui.post.viewmodel.PostViewModelFactory
 
 @Composable
 fun NavGraph(
@@ -23,19 +28,30 @@ fun NavGraph(
         startDestination = startDestination
     ) {
         composable<PostListRoute> {
+            val listViewModel: PostListViewModel = viewModel(
+                factory = PostViewModelFactory { PostListViewModel(it) }
+            )
+
             PostListScreen(
                 onPostClick = { postId ->
                     navController.navigate(PostDetailRoute(postId))
                 },
                 onCreatePostClick = {
                     navController.navigate(PostCreateRoute)
-                }
+                },
+                viewModel = listViewModel
             )
         }
 
         composable<PostDetailRoute> { backStackEntry ->
             val route = backStackEntry.toRoute<PostDetailRoute>()
+            val detailViewModel: PostDetailViewModel = viewModel(
+                factory = PostViewModelFactory { PostDetailViewModel(it) }
+            )
 
+            val editViewModel: PostEditViewModel = viewModel(
+                factory = PostViewModelFactory { PostEditViewModel(it) }
+            )
             PostDetailScreen(
                 postId = route.postId,
                 onNavigateBack = {
@@ -44,24 +60,38 @@ fun NavGraph(
                 onEditClick = { postId ->
                     navController.navigate(PostEditRoute(postId))
                 },
-                snackBarState = snackBarState
+                snackBarState = snackBarState,
+                detailViewModel=detailViewModel,
+                editViewModel=editViewModel
             )
         }
 
         composable<PostCreateRoute> {
+            val createViewModel: PostCreateViewModel = viewModel(
+                factory = PostViewModelFactory { PostCreateViewModel(it) }
+            )
+
             PostCreateScreen(
                 onNavigateBack = {
                     navController.popBackStack()
                 },
                 onPostCreated = {
                     navController.popBackStack()
                 },
-                snackBarState = snackBarState
+                snackBarState = snackBarState,
+                postCreateViewModel = createViewModel
             )
         }
 
         composable<PostEditRoute> { backStackEntry ->
             val route = backStackEntry.toRoute<PostEditRoute>()
+            val detailViewModel: PostDetailViewModel = viewModel(
+                factory = PostViewModelFactory { PostDetailViewModel(it) }
+            )
+
+            val editViewModel: PostEditViewModel = viewModel(
+                factory = PostViewModelFactory { PostEditViewModel(it) }
+            )
 
             PostEditScreen(
                 postId = route.postId,
@@ -71,7 +101,9 @@ fun NavGraph(
                 onPostUpdated = {
                     navController.popBackStack()
                 },
-                snackBarState = snackBarState
+                snackBarState = snackBarState,
+                editViewModel = editViewModel,
+                detailViewModel = detailViewModel
             )
         }
     }

app/src/main/java/com/example/kuit6_android_api/ui/post/screen/PostCreateScreen.kt

@@ -47,6 +47,7 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
+import com.example.kuit6_android_api.ui.post.viewmodel.PostCreateViewModel
 import com.example.kuit6_android_api.ui.post.viewmodel.PostViewModel
 import kotlinx.coroutines.launch
 
@@ -56,7 +57,7 @@ fun PostCreateScreen(
     onNavigateBack: () -> Unit,
     onPostCreated: () -> Unit,
     snackBarState: SnackbarHostState,
-    viewModel: PostViewModel = viewModel()
+    postCreateViewModel: PostCreateViewModel = viewModel()
 ) {
     val context = LocalContext.current
     var author by remember { mutableStateOf("") }
@@ -196,7 +197,7 @@ fun PostCreateScreen(
             Button(
                 onClick = {
                     val finalAuthor = author
-                    viewModel.createPost(finalAuthor, title, content, null) {
+                    postCreateViewModel.createPost(finalAuthor, title, content, null) {
                         onPostCreated()
                         scope.launch { snackBarState.showSnackbar("게시글이 작성되었습니다.") }
                     }

app/src/main/java/com/example/kuit6_android_api/ui/post/screen/PostEditScreen.kt

@@ -46,6 +46,8 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import coil.compose.AsyncImage
+import com.example.kuit6_android_api.ui.post.viewmodel.PostDetailViewModel
+import com.example.kuit6_android_api.ui.post.viewmodel.PostEditViewModel
 import com.example.kuit6_android_api.ui.post.viewmodel.PostViewModel
 import kotlinx.coroutines.launch
 
@@ -56,7 +58,9 @@ fun PostEditScreen(
     onNavigateBack: () -> Unit,
     onPostUpdated: () -> Unit,
     viewModel: PostViewModel = viewModel(),
-    snackBarState: SnackbarHostState
+    snackBarState: SnackbarHostState,
+    editviewModel: PostEditViewModel = viewModel(),
+    detailViewModel: PostDetailViewModel = viewModel()
 ) {
     val post = viewModel.postDetail
 

app/src/main/java/com/example/kuit6_android_api/ui/post/screen/PostListScreen.kt

@@ -9,6 +9,7 @@ import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Add
+import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.FloatingActionButton
 import androidx.compose.material3.Icon
@@ -18,24 +19,24 @@ import androidx.compose.material3.Text
 import androidx.compose.material3.TopAppBar
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.example.kuit6_android_api.ui.post.component.PostItem
+import com.example.kuit6_android_api.ui.post.state.PostListUiState
+import com.example.kuit6_android_api.ui.post.viewmodel.PostListViewModel
 import com.example.kuit6_android_api.ui.post.viewmodel.PostViewModel
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun PostListScreen(
     onPostClick: (Long) -> Unit,
     onCreatePostClick: () -> Unit,
-    viewModel: PostViewModel = viewModel()
+    viewModel: PostListViewModel
 ) {
-    val posts = viewModel.posts
-
-    LaunchedEffect(Unit) {
-        viewModel.getPosts()
-    }
+    val uiState by viewModel.uiState.collectAsState()
 
     Scaffold(
         topBar = {
@@ -49,19 +50,29 @@ fun PostListScreen(
             }
         }
     ) { paddingValues ->
-        LazyColumn(
-            modifier = Modifier
-                .fillMaxSize()
-                .padding(paddingValues)
-                .background(MaterialTheme.colorScheme.background),
-            contentPadding = PaddingValues(horizontal = 16.dp, vertical = 12.dp),
-            verticalArrangement = Arrangement.spacedBy(16.dp)
-        ) {
-            items(posts) { post ->
-                PostItem(
-                    post = post,
-                    onClick = { onPostClick(post.id) }
-                )
+        when (uiState){
+            is PostListUiState.Loading -> {
+                CircularProgressIndicator()
+            }
+            is PostListUiState.Success -> {
+                LazyColumn(
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .padding(paddingValues)
+                        .background(MaterialTheme.colorScheme.background),
+                    contentPadding = PaddingValues(horizontal = 16.dp, vertical = 12.dp),
+                    verticalArrangement = Arrangement.spacedBy(16.dp)
+                ) {
+                    items(items = (uiState as PostListUiState.Success).posts) { post ->
+                        PostItem(
+                            post = post,
+                            onClick = { onPostClick(post.id) }
+                        )
+                    }
+                }
+            }
+            is PostListUiState.Error -> {
+                Text(text = "로딩 실패")
             }
         }
     }