[refactor] 위니 피드 / 일회성 이벤트는 SharedFlow 사용하도록 변경

app/src/main/java/org/go/sopt/winey/presentation/main/feed/WineyFeedFragment.kt

@@ -40,6 +40,7 @@ import org.go.sopt.winey.util.amplitude.type.EventType
 import org.go.sopt.winey.util.amplitude.type.EventType.TYPE_CLICK_FEED_ITEM
 import org.go.sopt.winey.util.amplitude.type.EventType.TYPE_CLICK_LIKE
 import org.go.sopt.winey.util.binding.BindingFragment
+import org.go.sopt.winey.util.event.EventBus
 import org.go.sopt.winey.util.fragment.WineyDialogFragment
 import org.go.sopt.winey.util.fragment.WineyUploadDialogFragment
 import org.go.sopt.winey.util.fragment.snackBar
@@ -107,6 +108,7 @@ class WineyFeedFragment :
         initPostLikeStateObserver()
         initDeleteFeedStateObserver()
         initLevelUpStateObserver()
+        collectEvent()
     }
 
     /** Adapter */
@@ -327,10 +329,6 @@ class WineyFeedFragment :
                     is UiState.Success -> {
                         val pagingData = state.data
                         wineyFeedAdapter.submitData(pagingData)
-
-                        // 상세피드 들어갔다 나올 때, 성공 상태가 계속 관찰되어
-                        // 이미 삭제된 항목이 되살아나는 일이 없도록 UiState 초기화
-                        viewModel.initGetWineyFeedState()
                     }
 
                     is UiState.Failure -> {
@@ -391,17 +389,8 @@ class WineyFeedFragment :
                         val response = state.data ?: return@onEach
                         deletePagingDataItem(response.feedId.toInt())
 
-                        wineySnackbar(
-                            anchorView = binding.root,
-                            message = stringOf(R.string.snackbar_feed_delete_success),
-                            type = SnackbarType.WineyFeedResult(isSuccess = true)
-                        )
-
+                        // 목표 프로그레스바 갱신을 위해 유저 데이터 재조회
                         mainViewModel.getUser()
-
-                        // 상세피드 들어갔다 나올 때 성공 상태가 계속 관찰되어
-                        // 스낵바가 반복해서 뜨지 않도록 UiState 초기화
-                        viewModel.initDeleteFeedState()
                     }
 
                     is UiState.Failure -> {
@@ -413,6 +402,28 @@ class WineyFeedFragment :
             }.launchIn(viewLifeCycleScope)
     }
 
+    private fun collectEvent() {
+        viewModel.eventFlow.flowWithLifecycle(viewLifeCycle)
+            .onEach { event ->
+                when (event) {
+                    is EventBus.ShowSnackBar -> {
+                        showFeedDeleteSuccessSnackBar()
+                    }
+
+                    else -> {}
+                }
+            }
+            .launchIn(viewLifeCycleScope)
+    }
+
+    private fun showFeedDeleteSuccessSnackBar() {
+        wineySnackbar(
+            anchorView = binding.root,
+            message = stringOf(R.string.snackbar_feed_delete_success),
+            type = SnackbarType.WineyFeedResult(isSuccess = true)
+        )
+    }
+
     private fun deletePagingDataItem(feedId: Int) {
         viewLifeCycleScope.launch {
             val newList = wineyFeedAdapter.deleteItem(feedId)

app/src/main/java/org/go/sopt/winey/presentation/main/feed/WineyFeedViewModel.kt

@@ -5,8 +5,11 @@ import androidx.lifecycle.viewModelScope
 import androidx.paging.PagingData
 import androidx.paging.cachedIn
 import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharedFlow
 import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asSharedFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.collectLatest
@@ -17,6 +20,7 @@ import org.go.sopt.winey.domain.entity.DetailFeed
 import org.go.sopt.winey.domain.entity.Like
 import org.go.sopt.winey.domain.entity.WineyFeed
 import org.go.sopt.winey.domain.repository.FeedRepository
+import org.go.sopt.winey.util.event.EventBus
 import org.go.sopt.winey.util.view.UiState
 import retrofit2.HttpException
 import timber.log.Timber
@@ -44,6 +48,9 @@ class WineyFeedViewModel @Inject constructor(
     val deleteWineyFeedState: StateFlow<UiState<ResponseDeleteFeedDto?>> =
         _deleteWineyFeedState.asStateFlow()
 
+    private val _eventFlow = MutableSharedFlow<EventBus>()
+    val eventFlow: SharedFlow<EventBus> = _eventFlow.asSharedFlow()
+
     init {
         getWineyFeedList()
     }
@@ -62,10 +69,6 @@ class WineyFeedViewModel @Inject constructor(
         }
     }
 
-    fun initGetWineyFeedState() {
-        _getWineyFeedListState.value = UiState.Empty
-    }
-
     fun getDetailFeed(feedId: Int) {
         viewModelScope.launch {
             _getDetailFeedState.emit(UiState.Loading)
@@ -102,13 +105,16 @@ class WineyFeedViewModel @Inject constructor(
             feedRepository.deleteFeed(feedId)
                 .onSuccess { response ->
                     _deleteWineyFeedState.emit(UiState.Success(response))
+                    sendEvent(EventBus.ShowSnackBar)
                 }
                 .onFailure { t -> handleFailureState(_deleteWineyFeedState, t) }
         }
     }
 
-    fun initDeleteFeedState() {
-        _deleteWineyFeedState.value = UiState.Empty
+    private fun sendEvent(event: EventBus) {
+        viewModelScope.launch {
+            _eventFlow.emit(event)
+        }
     }
 
     private fun <T> handleFailureState(loadingState: MutableStateFlow<UiState<T>>, t: Throwable) {
@@ -127,6 +133,5 @@ class WineyFeedViewModel @Inject constructor(
         private const val CODE_WINEYFEED_INVALID_USER = 404
         private const val CODE_WINEYFEED_INVALID_REQUEST = 400
         private const val MSG_WINEYFEED_FAIL = "FAIL"
-        private const val ERROR_GET_WINEY_FEED_LIST = "error get winey feed list"
     }
 }

app/src/main/java/org/go/sopt/winey/util/event/EventBus.kt

@@ -0,0 +1,6 @@
+package org.go.sopt.winey.util.event
+
+sealed interface EventBus {
+    object Empty : EventBus
+    object ShowSnackBar : EventBus
+}