fix(content): 성인 콘텐츠 설정 동기화와 국가별 인증 분기를 적용한다

SodaLive/Sources/Settings/Content/ContentSettingsViewModel.swift

@@ -6,28 +6,183 @@
 //
 
 import Foundation
+import Combine
 
 final class ContentSettingsViewModel: ObservableObject {
-    @Published var isAdultContentVisible = UserDefaults.isAdultContentVisible() {
-        didSet {
-            if oldValue != isAdultContentVisible {
-                UserDefaults.set(isAdultContentVisible, forKey: .isAdultContentVisible)
-                AppState.shared.isRestartApp = true
-                
-                if !isAdultContentVisible {
-                    adultContentPreference = .ALL
-                    UserDefaults.set(ContentType.ALL.rawValue, forKey: .contentPreference)
+    private let userRepository = UserRepository()
+    private var subscription = Set<AnyCancellable>()
+    private let contentPreferenceSubject = PassthroughSubject<ContentPreferenceState, Never>()
+    private var latestRequestToken = UUID()
+    private var isApplyingServerState = false
+    private var lastSyncedState: ContentPreferenceState
+
+    @Published var isLoading = false
+    @Published var errorMessage = ""
+    @Published var isShowPopup = false
+    @Published var isShowAdultContentAgeCheckDialog = false
+
+    @Published var isAdultContentVisible: Bool
+    @Published var adultContentPreference: ContentType
+
+    init() {
+        let isAdultContentVisible = UserDefaults.isAdultContentVisible()
+        let contentPreference = ContentType(rawValue: UserDefaults.string(forKey: .contentPreference)) ?? .ALL
+        let initialState = ContentPreferenceState(
+            isAdultContentVisible: isAdultContentVisible,
+            contentType: isAdultContentVisible ? contentPreference : .ALL
+        )
+
+        _isAdultContentVisible = Published(initialValue: isAdultContentVisible)
+        _adultContentPreference = Published(initialValue: isAdultContentVisible ? contentPreference : .ALL)
+        lastSyncedState = initialState
+
+        bindContentPreference()
+    }
+
+    private func bindContentPreference() {
+        $isAdultContentVisible
+            .dropFirst()
+            .removeDuplicates()
+            .sink { [weak self] isAdultContentVisible in
+                guard let self = self else { return }
+                if self.isApplyingServerState { return }
+
+                if !isAdultContentVisible && self.adultContentPreference != .ALL {
+                    self.adultContentPreference = .ALL
                 }
             }
+            .store(in: &subscription)
+
+        Publishers.CombineLatest($isAdultContentVisible, $adultContentPreference)
+            .map { isAdultContentVisible, adultContentPreference in
+                ContentPreferenceState(
+                    isAdultContentVisible: isAdultContentVisible,
+                    contentType: isAdultContentVisible ? adultContentPreference : .ALL
+                )
+            }
+            .removeDuplicates()
+            .dropFirst()
+            .sink { [weak self] state in
+                guard let self = self else { return }
+                if self.isApplyingServerState { return }
+
+                self.applyLocalState(state)
+                self.contentPreferenceSubject.send(state)
+            }
+            .store(in: &subscription)
+
+        contentPreferenceSubject
+            .removeDuplicates()
+            .debounce(for: .seconds(0.3), scheduler: RunLoop.main)
+            .sink { [weak self] state in
+                self?.updateContentPreference(state: state)
+            }
+            .store(in: &subscription)
+    }
+
+    private func updateContentPreference(state: ContentPreferenceState) {
+        let request = makeUpdateContentPreferenceRequest(from: lastSyncedState, to: state)
+        if request.isEmpty {
+            return
+        }
+
+        let requestToken = UUID()
+        latestRequestToken = requestToken
+        isLoading = true
+
+        userRepository
+            .updateContentPreference(
+                request: request
+            )
+            .sink { [weak self] result in
+                guard let self = self else { return }
+                guard self.latestRequestToken == requestToken else { return }
+
+                switch result {
+                case .finished:
+                    DEBUG_LOG("finish")
+
+                case .failure(let error):
+                    ERROR_LOG(error.localizedDescription)
+                    self.errorMessage = I18n.Common.commonError
+                    self.isShowPopup = true
+                    self.isLoading = false
+                }
+            } receiveValue: { [weak self] response in
+                guard let self = self else { return }
+                guard self.latestRequestToken == requestToken else { return }
+
+                do {
+                    let decoded = try JSONDecoder().decode(ApiResponse<UpdateContentPreferenceResponse>.self, from: response.data)
+
+                    if let data = decoded.data, decoded.success {
+                        let serverState = ContentPreferenceState(
+                            isAdultContentVisible: data.isAdultContentVisible,
+                            contentType: data.isAdultContentVisible ? data.contentType : .ALL
+                        )
+                        self.applyServerState(serverState)
+                    } else {
+                        self.errorMessage = decoded.message ?? I18n.Common.commonError
+                        self.isShowPopup = true
+                    }
+                } catch {
+                    self.errorMessage = I18n.Common.commonError
+                    self.isShowPopup = true
+                }
+
+                self.isLoading = false
+            }
+            .store(in: &subscription)
+    }
+
+    private func applyLocalState(_ state: ContentPreferenceState) {
+        UserDefaults.set(state.isAdultContentVisible, forKey: .isAdultContentVisible)
+        UserDefaults.set(state.contentType.rawValue, forKey: .contentPreference)
+        AppState.shared.isRestartApp = true
+    }
+
+    private func applyServerState(_ state: ContentPreferenceState) {
+        isApplyingServerState = true
+        isAdultContentVisible = state.isAdultContentVisible
+        adultContentPreference = state.contentType
+        applyLocalState(state)
+        lastSyncedState = state
+        isApplyingServerState = false
+    }
+
+    private func makeUpdateContentPreferenceRequest(from previousState: ContentPreferenceState, to currentState: ContentPreferenceState) -> UpdateContentPreferenceRequest {
+        let isAdultContentVisible = previousState.isAdultContentVisible != currentState.isAdultContentVisible
+            ? currentState.isAdultContentVisible
+            : nil
+        let contentType = previousState.contentType != currentState.contentType
+            ? currentState.contentType
+            : nil
+
+        return UpdateContentPreferenceRequest(
+            isAdultContentVisible: isAdultContentVisible,
+            contentType: contentType
+        )
+    }
+
+    func handleAdultContentToggleTap() {
+        if isAdultContentVisible {
+            isAdultContentVisible = false
+        } else {
+            isShowAdultContentAgeCheckDialog = true
         }
     }
-    
-    @Published var adultContentPreference = ContentType(rawValue: UserDefaults.string(forKey: .contentPreference)) ?? ContentType.ALL {
-        didSet {
-            if oldValue != adultContentPreference {
-                UserDefaults.set(adultContentPreference.rawValue, forKey: .contentPreference)
-                AppState.shared.isRestartApp = true
-            }
-        }
+
+    func confirmAdultContentAgeCheck() {
+        isShowAdultContentAgeCheckDialog = false
+        isAdultContentVisible = true
+    }
+
+    func cancelAdultContentAgeCheck() {
+        isShowAdultContentAgeCheckDialog = false
     }
 }
+
+private struct ContentPreferenceState: Equatable {
+    let isAdultContentVisible: Bool
+    let contentType: ContentType
+}