Release 1.0.0 baseline

MealMood/ViewModels/SettingsViewModel.swift

@@ -6,11 +6,33 @@ import EventKit
 final class SettingsViewModel: ObservableObject {
     @Published var availableCalendars: [EKCalendar] = []
     @Published var showCalendarPermissionAlert: Bool = false
+    @Published var showToast: Bool = false
+    @Published var toastMessage: String = ""
 
     func loadCalendars() {
         availableCalendars = CalendarService.shared.availableCalendars()
     }
 
+    @discardableResult
+    func ensureValidCalendarSelection(settings: AppSettings) -> Bool {
+        loadCalendars()
+
+        guard !availableCalendars.isEmpty else {
+            settings.calendarId = nil
+            settings.syncEnabled = false
+            showToastMessage(String(localized: "toast_calendar_unavailable"))
+            return false
+        }
+
+        if let selected = settings.calendarId,
+           availableCalendars.contains(where: { $0.calendarIdentifier == selected }) {
+            return true
+        }
+
+        settings.calendarId = availableCalendars.first?.calendarIdentifier
+        return true
+    }
+
     func requestCalendarAccess() async -> Bool {
         let granted = await CalendarService.shared.requestAccess()
         if !granted {
@@ -42,10 +64,19 @@ final class SettingsViewModel: ObservableObject {
             try deleteAll(of: WeekPlan.self, in: context)
             try deleteAll(of: Dish.self, in: context)
             try deleteAll(of: Tag.self, in: context)
-            try deleteAll(of: AppSettings.self, in: context)
-
-            DefaultDataService.createDefaultSettings(context: context)
             DefaultDataService.createDefaultTags(context: context)
+
+            let settingsDescriptor = FetchDescriptor<AppSettings>()
+            if let existingSettings = try context.fetch(settingsDescriptor).first {
+                resetSettings(existingSettings)
+            } else {
+                DefaultDataService.createDefaultSettings(context: context)
+                if let createdSettings = try context.fetch(settingsDescriptor).first {
+                    resetSettings(createdSettings)
+                }
+            }
+
+            try context.save()
         } catch {
             #if DEBUG
             print("Failed to reset all data: \(error)")
@@ -61,4 +92,28 @@ final class SettingsViewModel: ObservableObject {
         }
         try context.save()
     }
+
+    private func showToastMessage(_ message: String) {
+        toastMessage = message
+        withAnimation(.easeInOut(duration: 0.2)) {
+            showToast = true
+        }
+    }
+
+    private func resetSettings(_ settings: AppSettings) {
+        let defaults = AppSettings()
+        settings.mealWindows = defaults.mealWindows
+        settings.includeWeekends = defaults.includeWeekends
+        settings.language = defaults.language
+        settings.calendarId = defaults.calendarId
+        settings.syncEnabled = defaults.syncEnabled
+        settings.syncMode = defaults.syncMode
+        settings.lunchTime = defaults.lunchTime
+        settings.dinnerTime = defaults.dinnerTime
+        settings.eventDuration = defaults.eventDuration
+        settings.eventPrefix = defaults.eventPrefix
+        settings.reminderMinutesBefore = defaults.reminderMinutesBefore
+        settings.iCloudSyncEnabled = false
+        settings.onboardingCompleted = false
+    }
 }