[#368] LoadingView 띄우는 형태를 LoadingState()로 관리하여 즉시 뜨는게 아닌 일정 시간 딜레이 후 그 동안에도 비동기 로딩 중이면 뜨도록 개선한다

DevLog/Presentation/ViewModel/SearchViewModel.swift

@@ -40,6 +40,8 @@ final class SearchViewModel: Store {
     }
 
     enum SideEffect {
+        case cancelSearch
+        case debounceFetch(String)
         case fetch(String)
     }
 
@@ -103,20 +105,21 @@ final class SearchViewModel: Store {
             state.isLoading = isLoading
         case .setSearching(let isSearching):
             state.isSearching = isSearching
+            if !isSearching {
+                effects = [.cancelSearch]
+            }
         case .setSearchQuery(let query):
             guard state.searchQuery != query else { return [] }
             state.searchQuery = query
             state.showAllTodos = false
             state.showAllWebPages = false
             let trimmed = query.trimmingCharacters(in: .whitespacesAndNewlines)
             if trimmed.isEmpty {
-                cancelSearch()
                 state.webPages = []
                 state.todos = []
+                effects = [.cancelSearch]
             } else {
-                cancelSearch()
-                beginLoading(.immediate)
-                scheduleDebouncedFetch(trimmed)
+                effects = [.cancelSearch, .debounceFetch(trimmed)]
             }
         case .applySearchQuery(let query):
             effects = [.fetch(query)]
@@ -132,6 +135,11 @@ final class SearchViewModel: Store {
 
     func run(_ effect: SideEffect) {
         switch effect {
+        case .cancelSearch:
+            cancelSearch()
+        case .debounceFetch(let query):
+            beginLoading(.immediate)
+            scheduleDebouncedFetch(query)
         case .fetch(let query):
             searchTasks[.request]?.cancel()
             let requestTask = Task { [weak self] in

DevLog/Presentation/ViewModel/TodoListViewModel.swift

@@ -64,6 +64,8 @@ final class TodoListViewModel: Store {
     }
 
     enum SideEffect {
+        case cancelSearch
+        case debounceSearch(String)
         case fetch
         case loadNextPage
         case search(String)
@@ -146,6 +148,11 @@ final class TodoListViewModel: Store {
     // swiftlint:disable function_body_length
     func run(_ effect: SideEffect) {
         switch effect {
+        case .cancelSearch:
+            cancelSearch()
+        case .debounceSearch(let keyword):
+            beginLoading(.immediate)
+            scheduleDebouncedSearch(keyword)
         case .fetch:
             beginLoading(.delayed)
             Task {
@@ -312,10 +319,10 @@ private extension TodoListViewModel {
         case .setIsSearching(let value):
             state.isSearching = value
             if !value {
-                cancelSearch()
                 state.searchText = ""
                 state.searchResults = []
                 state.showAllSearchResults = false
+                return [.cancelSearch]
             }
         case .setShowAllSearchResults(let value):
             state.showAllSearchResults = value
@@ -346,12 +353,10 @@ private extension TodoListViewModel {
             state.showAllSearchResults = false
             let trimmed = text.trimmingCharacters(in: .whitespacesAndNewlines)
             if trimmed.isEmpty {
-                cancelSearch()
                 state.searchResults = []
+                return [.cancelSearch]
             } else {
-                cancelSearch()
-                beginLoading(.immediate)
-                scheduleDebouncedSearch(trimmed)
+                return [.cancelSearch, .debounceSearch(trimmed)]
             }
         case .setToast(let isPresented):
             setToast(&state, isPresented: isPresented)