Ground work for Wino Calendar. (#475)

Wino Calendar abstractions.

Wino.Core.ViewModels/SettingOptionsPageViewModel.cs

@@ -0,0 +1,63 @@
+using System;
+using System.Collections.Generic;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using CommunityToolkit.Mvvm.Messaging;
+using Wino.Core.Domain;
+using Wino.Core.Domain.Enums;
+using Wino.Core.Domain.Interfaces;
+using Wino.Core.Domain.Models.Settings;
+using Wino.Messaging.Client.Navigation;
+
+namespace Wino.Core.ViewModels
+{
+    public partial class SettingOptionsPageViewModel : CoreBaseViewModel
+    {
+        private readonly ISettingsBuilderService _settingsBuilderService;
+
+        [RelayCommand]
+        private void GoAccountSettings() => Messenger.Send<NavigateManageAccountsRequested>();
+
+        [RelayCommand]
+        public void NavigateSubDetail(object type)
+        {
+            if (type is WinoPage pageType)
+            {
+                if (pageType == WinoPage.AccountManagementPage)
+                {
+                    GoAccountSettings();
+                    return;
+                }
+
+                string pageTitle = pageType switch
+                {
+                    WinoPage.PersonalizationPage => Translator.SettingsPersonalization_Title,
+                    WinoPage.AboutPage => Translator.SettingsAbout_Title,
+                    WinoPage.MessageListPage => Translator.SettingsMessageList_Title,
+                    WinoPage.ReadComposePanePage => Translator.SettingsReadComposePane_Title,
+                    WinoPage.LanguageTimePage => Translator.SettingsLanguageTime_Title,
+                    WinoPage.AppPreferencesPage => Translator.SettingsAppPreferences_Title,
+                    WinoPage.CalendarSettingsPage => Translator.SettingsCalendarSettings_Title,
+                    _ => throw new NotImplementedException()
+                };
+
+                Messenger.Send(new BreadcrumbNavigationRequested(pageTitle, pageType));
+            }
+        }
+
+        [ObservableProperty]
+        private List<SettingOption> _settingOptions = new();
+
+        public SettingOptionsPageViewModel(ISettingsBuilderService settingsBuilderService)
+        {
+            _settingsBuilderService = settingsBuilderService;
+
+            ReloadSettings();
+        }
+
+        private void ReloadSettings()
+        {
+            SettingOptions = _settingsBuilderService.GetSettingItems();
+        }
+    }
+}