feat(reciperecommend): 무한스크롤 추가

Sundae-Gukbap · Jun 4, 2024 · 989a87d · 989a87d
1 parent 251251d
commit 989a87d
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Showing 2 changed files with 33 additions and 6 deletions.
diff --git a/.../main/java/com/sundaegukbap/banchango/feature/reciperecommend/RecipeRecommendViewModel.kt b/.../main/java/com/sundaegukbap/banchango/feature/reciperecommend/RecipeRecommendViewModel.kt
@@ -2,7 +2,6 @@ package com.sundaegukbap.banchango.feature.reciperecommend
 
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
-import com.sundaegukbap.banchango.Recipe
 import com.sundaegukbap.banchango.core.data.repository.api.RecipeRepository
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -20,14 +19,33 @@ class RecipeRecommendViewModel @Inject constructor(
         MutableStateFlow(RecipeRecommendUiState.Loading)
     val uiState: StateFlow<RecipeRecommendUiState> = _uiState.asStateFlow()
 
+    init {
+        viewModelScope.launch {
+            recipeRepository.getRecipeRecommendation().onSuccess {
+                _uiState.value =
+                    RecipeRecommendUiState
+                        .Success((it + it + it + it + it)
+                            .mapIndexed { index, recipe ->
+                                RecipeRecommendItemUiState(
+                                    recipe = recipe.copy(name = recipe.name + index.toString()),
+                                    isHated = false,
+                                    isLiked = false,
+                                )
+                            })
+            }.onFailure { throwable ->
+                throwable.printStackTrace()
+            }
+        }
+    }
+
     fun getRecipeRecommendation() {
-        if (_uiState.value is RecipeRecommendUiState.Success) return
+        val successUiState = _uiState.value as? RecipeRecommendUiState.Success ?: return
 
         viewModelScope.launch {
             recipeRepository.getRecipeRecommendation().onSuccess {
                 _uiState.value =
-                    RecipeRecommendUiState
-                        .Success((it + it + it + it + it + it + it)
+                    RecipeRecommendUiState.Success(
+                        successUiState.recipes + (it + it + it + it + it)
                             .mapIndexed { index, recipe ->
                                 RecipeRecommendItemUiState(
                                     recipe = recipe.copy(name = recipe.name + index.toString()),
@@ -44,6 +62,7 @@ class RecipeRecommendViewModel @Inject constructor(
     fun hateRecipe(page: Int) {
         val successRecipes = _uiState.value as? RecipeRecommendUiState.Success ?: return
         _uiState.value = RecipeRecommendUiState.Success(
+            // TODO : Hate
             successRecipes.recipes.toMutableList().apply { removeAt(page) }
         )
     }

diff --git a/...rc/main/java/com/sundaegukbap/banchango/feature/reciperecommend/RecipesRecommendScreen.kt b/...rc/main/java/com/sundaegukbap/banchango/feature/reciperecommend/RecipesRecommendScreen.kt
@@ -41,7 +41,8 @@ fun RecipeRecommendRoute(
     RecipeRecommendContent(
         padding = padding,
         uiState = uiState,
-        onHateClick = { viewModel.hateRecipe(it) },
+        onHateClick = viewModel::hateRecipe,
+        onLastPageVisible = viewModel::getRecipeRecommendation,
     )
 }
 
@@ -51,6 +52,7 @@ fun RecipeRecommendContent(
     uiState: RecipeRecommendUiState,
     onHateClick: (Int) -> Unit = {},
     onLikeClick: (Int) -> Unit = {},
+    onLastPageVisible: () -> Unit = {},
 ) {
 
     when (uiState) {
@@ -64,6 +66,7 @@ fun RecipeRecommendContent(
                 padding = padding,
                 onHateClick = onHateClick,
                 onLikeClick = onLikeClick,
+                onLastPageVisible = onLastPageVisible,
             )
         }
     }
@@ -83,6 +86,7 @@ private fun RecipeRecommendScreen(
     recipeRecommends: List<RecipeRecommendItemUiState>,
     onHateClick: (Int) -> Unit,
     onLikeClick: (Int) -> Unit,
+    onLastPageVisible: () -> Unit = {},
 ) {
     val pagerState = rememberPagerState(pageCount = { recipeRecommends.size })
     val coroutineScope = rememberCoroutineScope()
@@ -96,14 +100,18 @@ private fun RecipeRecommendScreen(
 
         var visible by remember { mutableStateOf(true) }
 
+        if (page >= recipeRecommends.size - 2) {
+            onLastPageVisible()
+        }
+
         RecipePage(
             visible = visible,
             page = page,
             recipeRecommends = recipeRecommends,
             onLikeClick = {
                 coroutineScope.launch {
                     onLikeClick(it)
-                    pagerState.animateScrollToPage(it)
+                    pagerState.animateScrollToPage(it + 1)
                 }
             },
             onHateClick = { visible = false },