feat: enhance models and services with Sendable conformance, add preview data for debugging

Mayday/ViewModels/AuthViewModel.swift

@@ -12,6 +12,13 @@ class AuthViewModel: ObservableObject {
     private let keychain = KeychainService.shared
 
     func checkAuthStatus() async {
+        #if DEBUG
+        if PreviewData.isPreviewMode {
+            currentUser = PreviewData.mockUser
+            isAuthenticated = true
+            return
+        }
+        #endif
         guard keychain.loadAccessToken() != nil else {
             isAuthenticated = false
             return
@@ -29,6 +36,15 @@ class AuthViewModel: ObservableObject {
         }
     }
 
+    #if DEBUG
+    func enterPreviewMode() async {
+        PreviewData.isPreviewMode = true
+        currentUser = PreviewData.mockUser
+        isAuthenticated = true
+        await PreviewData.startMockLiveActivity()
+    }
+    #endif
+
     func login(email: String, password: String) async {
         isLoading = true
         error = nil
@@ -68,6 +84,15 @@ class AuthViewModel: ObservableObject {
     }
 
     func logout() async {
+        #if DEBUG
+        if PreviewData.isPreviewMode {
+            await PreviewData.stopMockLiveActivity()
+            PreviewData.isPreviewMode = false
+            isAuthenticated = false
+            currentUser = nil
+            return
+        }
+        #endif
         isLoading = true
         defer { isLoading = false }
         do {

Mayday/ViewModels/NotificationsViewModel.swift

@@ -16,6 +16,13 @@ class NotificationsViewModel: ObservableObject {
     private var pollingTask: Task<Void, Never>?
 
     func load() async {
+        #if DEBUG
+        if PreviewData.isPreviewMode {
+            notifications = PreviewData.mockNotifications
+            hasMore = false
+            return
+        }
+        #endif
         isLoading = true
         error = nil
         currentPage = 1
@@ -31,6 +38,9 @@ class NotificationsViewModel: ObservableObject {
     }
 
     func loadMore() async {
+        #if DEBUG
+        if PreviewData.isPreviewMode { return }
+        #endif
         guard !isLoadingMore && hasMore else { return }
         isLoadingMore = true
         defer { isLoadingMore = false }
@@ -47,6 +57,26 @@ class NotificationsViewModel: ObservableObject {
 
     func markAsRead(_ notification: AppNotification) async {
         guard !notification.isRead else { return }
+        #if DEBUG
+        if PreviewData.isPreviewMode {
+            if let index = notifications.firstIndex(where: { $0.id == notification.id }) {
+                let updated = AppNotification(
+                    id: notification.id,
+                    topic: notification.topic,
+                    subject: notification.subject,
+                    body: notification.body,
+                    metadata: notification.metadata,
+                    status: .read,
+                    channel: notification.channel,
+                    readAt: Date(),
+                    createdAt: notification.createdAt,
+                    updatedAt: Date()
+                )
+                notifications[index] = updated
+            }
+            return
+        }
+        #endif
         do {
             try await service.markAsRead(id: notification.id)
             if let index = notifications.firstIndex(where: { $0.id == notification.id }) {
@@ -71,6 +101,9 @@ class NotificationsViewModel: ObservableObject {
     }
 
     func startPolling() {
+        #if DEBUG
+        if PreviewData.isPreviewMode { return }
+        #endif
         // Guard against starting a second polling loop if already running.
         guard pollingTask == nil else { return }
         pollingTask = Task {
@@ -89,6 +122,6 @@ class NotificationsViewModel: ObservableObject {
 
     private func updateBadge() {
         let unreadCount = notifications.filter { !$0.isRead }.count
-        UIApplication.shared.applicationIconBadgeNumber = unreadCount
+        UNUserNotificationCenter.current().setBadgeCount(unreadCount)
     }
 }

Mayday/ViewModels/SettingsViewModel.swift

@@ -11,6 +11,12 @@ class SettingsViewModel: ObservableObject {
     private let service = NotificationsAPIService.shared
 
     func loadSessions() async {
+        #if DEBUG
+        if PreviewData.isPreviewMode {
+            sessions = PreviewData.mockSessions
+            return
+        }
+        #endif
         isLoading = true
         defer { isLoading = false }
         do {
@@ -21,6 +27,12 @@ class SettingsViewModel: ObservableObject {
     }
 
     func deleteSession(_ session: SessionResponse) async {
+        #if DEBUG
+        if PreviewData.isPreviewMode {
+            sessions.removeAll { $0.id == session.id }
+            return
+        }
+        #endif
         do {
             try await service.deleteSession(id: session.id)
             sessions.removeAll { $0.id == session.id }
@@ -30,6 +42,12 @@ class SettingsViewModel: ObservableObject {
     }
 
     func changePassword(current: String, new: String) async -> Bool {
+        #if DEBUG
+        if PreviewData.isPreviewMode {
+            successMessage = "Пароль успешно изменён"
+            return true
+        }
+        #endif
         isLoading = true
         error = nil
         defer { isLoading = false }