Wino.Server and Wino.Packaging projects. Enabling full trust for UWP and app service connection manager basics.

Wino.Core.Domain/Enums/WinoServerConnectionStatus.cs

@@ -0,0 +1,11 @@
+namespace Wino.Core.Domain.Enums
+{
+    public enum WinoServerConnectionStatus
+    {
+        None,
+        Connecting,
+        Connected,
+        Disconnected,
+        Failed
+    }
+}

Wino.Core.Domain/Interfaces/IServerMessage.cs

@@ -6,5 +6,5 @@
     /// They are sent either from processor or view models to signal some other
     /// parts of the application.
     /// </summary>
-    public interface IUIMessage;
+    public interface IServerMessage;
 }

Wino.Core.Domain/Interfaces/IWinoServerConnectionManager.cs

@@ -0,0 +1,17 @@
+using System.Threading.Tasks;
+using Wino.Core.Domain.Enums;
+
+namespace Wino.Core.Domain.Interfaces
+{
+    public interface IWinoServerConnectionManager
+    {
+        WinoServerConnectionStatus Status { get; }
+        Task<bool> ConnectAsync();
+        Task<bool> DisconnectAsync();
+    }
+
+    public interface IWinoServerConnectionManager<TAppServiceConnection> : IWinoServerConnectionManager, IInitializeAsync
+    {
+        TAppServiceConnection Connection { get; set; }
+    }
+}

Wino.Core.Domain/Wino.Core.Domain.csproj

@@ -70,4 +70,7 @@
 	    <LastGenOutput>Translator.Designer.cs</LastGenOutput>
 	  </None>
 	</ItemGroup>
+	<ItemGroup>
+	  <Folder Include="Models\Communication\" />
+	</ItemGroup>
 </Project>

Wino.Core.UWP/CoreUWPContainerSetup.cs

@@ -1,4 +1,5 @@
 using Microsoft.Extensions.DependencyInjection;
+using Windows.ApplicationModel.AppService;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.UWP.Services;
 using Wino.Services;
@@ -9,6 +10,11 @@ namespace Wino.Core.UWP
     {
         public static void RegisterCoreUWPServices(this IServiceCollection services)
         {
+            var serverConnectionManager = new WinoServerConnectionManager();
+
+            services.AddSingleton<IWinoServerConnectionManager>(serverConnectionManager);
+            services.AddSingleton<IWinoServerConnectionManager<AppServiceConnection>>(serverConnectionManager);
+
             services.AddSingleton<IUnderlyingThemeService, UnderlyingThemeService>();
             services.AddSingleton<INativeAppService, NativeAppService>();
             services.AddSingleton<IStoreManagementService, StoreManagementService>();

Wino.Core.UWP/Services/ThemeService.cs

@@ -167,6 +167,7 @@ namespace Wino.Services
             await ApplyCustomThemeAsync(true);
 
             // Registering to color changes, thus we notice when user changes theme system wide
+            uiSettings.ColorValuesChanged -= UISettingsColorChanged;
             uiSettings.ColorValuesChanged += UISettingsColorChanged;
         }
 

Wino.Core.UWP/Services/WinoServerConnectionManager.cs

@@ -0,0 +1,59 @@
+using System;
+using System.Threading.Tasks;
+using CommunityToolkit.Mvvm.ComponentModel;
+using Windows.ApplicationModel.AppService;
+using Windows.Foundation.Metadata;
+using Wino.Core.Domain.Enums;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Core.UWP.Services
+{
+    public partial class WinoServerConnectionManager : ObservableObject, IWinoServerConnectionManager<AppServiceConnection>
+    {
+        public AppServiceConnection Connection { get; set; }
+
+        private Guid? _activeConnectionSessionId;
+
+        [ObservableProperty]
+        private WinoServerConnectionStatus _status;
+
+        public async Task<bool> ConnectAsync()
+        {
+            if (Status == WinoServerConnectionStatus.Connected) return true;
+
+            if (ApiInformation.IsApiContractPresent("Windows.ApplicationModel.FullTrustAppContract", 1, 0))
+            {
+                try
+                {
+                    Status = WinoServerConnectionStatus.Connecting;
+
+                    // await FullTrustProcessLauncher.LaunchFullTrustProcessForCurrentAppAsync();
+                }
+                catch (Exception)
+                {
+                    return false;
+                }
+
+                return true;
+            }
+
+            return false;
+        }
+
+        public async Task<bool> DisconnectAsync()
+        {
+            if (Connection == null || Status == WinoServerConnectionStatus.Disconnected) return true;
+
+            // TODO: Send disconnect message to the fulltrust process.
+
+            return true;
+        }
+
+        public async Task InitializeAsync()
+        {
+            var isConnectionSuccessfull = await ConnectAsync();
+
+            // TODO: Log connection status
+        }
+    }
+}

Wino.Core.UWP/Wino.Core.UWP.csproj

@@ -118,6 +118,7 @@
   </PropertyGroup>
   <PropertyGroup>
     <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
+    <LangVersion>12.0</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="CoreUWPContainerSetup.cs" />
@@ -128,6 +129,7 @@
     <Compile Include="Models\Personalization\SystemAppTheme.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="Services\AppInitializerService.cs" />
+    <Compile Include="Services\WinoServerConnectionManager.cs" />
     <Compile Include="Services\BackgroundSynchronizer.cs" />
     <Compile Include="Services\BackgroundTaskService.cs" />
     <Compile Include="Services\ClipboardService.cs" />
@@ -169,7 +171,11 @@
       <Name>Wino.Core</Name>
     </ProjectReference>
   </ItemGroup>
-  <ItemGroup />
+  <ItemGroup>
+    <SDKReference Include="WindowsDesktop, Version=10.0.22621.0">
+      <Name>Windows Desktop Extensions for the UWP</Name>
+    </SDKReference>
+  </ItemGroup>
   <PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '14.0' ">
     <VisualStudioVersion>14.0</VisualStudioVersion>
   </PropertyGroup>

Wino.Core/Requests/ArchiveRequest.cs

@@ -7,6 +7,7 @@ using Wino.Core.Domain.Entities;
 using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Requests;
+using Wino.Messages.Server;
 
 namespace Wino.Core.Requests
 {

Wino.Core/Requests/ChangeFlagRequest.cs

@@ -7,6 +7,7 @@ using Wino.Core.Domain.Entities;
 using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Requests;
+using Wino.Messages.Server;
 
 namespace Wino.Core.Requests
 {

Wino.Core/Requests/CreateDraftRequest.cs

@@ -7,6 +7,7 @@ using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.MailItem;
 using Wino.Core.Domain.Models.Requests;
+using Wino.Messages.Server;
 
 namespace Wino.Core.Requests
 {

Wino.Core/Requests/DeleteRequest.cs

@@ -7,6 +7,7 @@ using Wino.Core.Domain.Entities;
 using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Requests;
+using Wino.Messages.Server;
 
 namespace Wino.Core.Requests
 {

Wino.Core/Requests/EmptyFolderRequest.cs

@@ -5,6 +5,7 @@ using Wino.Core.Domain.Entities;
 using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Requests;
+using Wino.Messages.Server;
 
 namespace Wino.Core.Requests
 {

Wino.Core/Requests/MarkFolderAsReadRequest.cs

@@ -5,6 +5,7 @@ using Wino.Core.Domain.Entities;
 using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Requests;
+using Wino.Messages.Server;
 
 namespace Wino.Core.Requests
 {

Wino.Core/Requests/MarkReadRequest.cs

@@ -7,6 +7,7 @@ using Wino.Core.Domain.Entities;
 using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Requests;
+using Wino.Messages.Server;
 
 namespace Wino.Core.Requests
 {

Wino.Core/Requests/MoveRequest.cs

@@ -7,6 +7,7 @@ using Wino.Core.Domain.Entities;
 using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Requests;
+using Wino.Messages.Server;
 
 namespace Wino.Core.Requests
 {

Wino.Core/Requests/RenameFolderRequest.cs

@@ -2,6 +2,7 @@
 using Wino.Core.Domain.Entities;
 using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Models.Requests;
+using Wino.Messages.Server;
 
 namespace Wino.Core.Requests
 {

Wino.Core/Requests/SendDraftRequest.cs

@@ -7,6 +7,7 @@ using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.MailItem;
 using Wino.Core.Domain.Models.Requests;
+using Wino.Messages.Server;
 
 namespace Wino.Core.Requests
 {

Wino.Core/Services/AccountService.cs

@@ -10,9 +10,9 @@ using SqlKata;
 using Wino.Core.Domain.Entities;
 using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
-using Wino.Core.Domain.Models.Requests;
 using Wino.Core.Extensions;
 using Wino.Core.Messages.Accounts;
+using Wino.Messages.Server;
 
 namespace Wino.Core.Services
 {

Wino.Core/Services/BaseDatabaseService.cs

@@ -16,7 +16,7 @@ namespace Wino.Core.Services
             _databaseService = databaseService;
         }
 
-        public void ReportUIChange<TMessage>(TMessage message) where TMessage : class, IUIMessage
+        public void ReportUIChange<TMessage>(TMessage message) where TMessage : class, IServerMessage
             => Messenger.Send(message);
     }
 }

Wino.Core/Services/FolderService.cs

@@ -13,10 +13,10 @@ using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Accounts;
 using Wino.Core.Domain.Models.Folders;
 using Wino.Core.Domain.Models.MailItem;
-using Wino.Core.Domain.Models.Requests;
 using Wino.Core.Domain.Models.Synchronization;
 using Wino.Core.Extensions;
 using Wino.Core.MenuItems;
+using Wino.Messages.Server;
 
 namespace Wino.Core.Services
 {

Wino.Core/Services/MailService.cs

@@ -13,8 +13,8 @@ using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Comparers;
 using Wino.Core.Domain.Models.MailItem;
-using Wino.Core.Domain.Models.Requests;
 using Wino.Core.Extensions;
+using Wino.Messages.Server;
 
 namespace Wino.Core.Services
 {

Wino.Mail.ViewModels/AccountDetailsPageViewModel.cs

@@ -5,15 +5,14 @@ using System.Threading.Tasks;
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
 using CommunityToolkit.Mvvm.Messaging;
-using Wino.Core;
 using Wino.Core.Domain;
 using Wino.Core.Domain.Entities;
 using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Folders;
 using Wino.Core.Domain.Models.Navigation;
-using Wino.Core.Domain.Models.Requests;
 using Wino.Core.Messages.Navigation;
+using Wino.Messages.Server;
 
 namespace Wino.Mail.ViewModels
 {

Wino.Mail.ViewModels/AccountManagementViewModel.cs

@@ -15,12 +15,12 @@ using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Exceptions;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Navigation;
-using Wino.Core.Domain.Models.Requests;
 using Wino.Core.Domain.Models.Store;
 using Wino.Core.Domain.Models.Synchronization;
 using Wino.Core.Messages.Authorization;
 using Wino.Core.Messages.Navigation;
 using Wino.Mail.ViewModels.Data;
+using Wino.Messages.Server;
 
 namespace Wino.Mail.ViewModels
 {

Wino.Mail.ViewModels/AppShellViewModel.cs

@@ -18,7 +18,6 @@ using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Folders;
 using Wino.Core.Domain.Models.MailItem;
 using Wino.Core.Domain.Models.Navigation;
-using Wino.Core.Domain.Models.Requests;
 using Wino.Core.Domain.Models.Synchronization;
 using Wino.Core.MenuItems;
 using Wino.Core.Messages.Accounts;
@@ -27,6 +26,7 @@ using Wino.Core.Messages.Navigation;
 using Wino.Core.Messages.Shell;
 using Wino.Core.Messages.Synchronization;
 using Wino.Core.Services;
+using Wino.Messages.Server;
 
 namespace Wino.Mail.ViewModels
 {
@@ -62,6 +62,7 @@ namespace Wino.Mail.ViewModels
         #endregion
 
         public IStatePersistanceService StatePersistenceService { get; }
+        public IWinoServerConnectionManager ServerConnectionManager { get; }
         public IPreferencesService PreferencesService { get; }
         public IWinoNavigationService NavigationService { get; }
 
@@ -97,9 +98,12 @@ namespace Wino.Mail.ViewModels
                                  INotificationBuilder notificationBuilder,
                                  IWinoRequestDelegator winoRequestDelegator,
                                  IFolderService folderService,
-                                 IStatePersistanceService statePersistanceService) : base(dialogService)
+                                 IStatePersistanceService statePersistanceService,
+                                 IWinoServerConnectionManager serverConnectionManager) : base(dialogService)
         {
             StatePersistenceService = statePersistanceService;
+            ServerConnectionManager = serverConnectionManager;
+
             PreferencesService = preferencesService;
             NavigationService = navigationService;
 

Wino.Mail.ViewModels/BaseViewModel.cs

@@ -6,7 +6,7 @@ using Wino.Core.Domain.Entities;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Folders;
 using Wino.Core.Domain.Models.Navigation;
-using Wino.Core.Domain.Models.Requests;
+using Wino.Messages.Server;
 
 namespace Wino.Mail.ViewModels
 {
@@ -71,7 +71,7 @@ namespace Wino.Mail.ViewModels
         protected virtual void OnFolderRenamed(IMailItemFolder mailItemFolder) { }
         protected virtual void OnFolderSynchronizationEnabled(IMailItemFolder mailItemFolder) { }
 
-        public void ReportUIChange<TMessage>(TMessage message) where TMessage : class, IUIMessage
+        public void ReportUIChange<TMessage>(TMessage message) where TMessage : class, IServerMessage
             => Messenger.Send(message);
 
         void IRecipient<AccountCreatedMessage>.Receive(AccountCreatedMessage message) => OnAccountCreated(message.Account);

Wino.Mail.ViewModels/MergedAccountDetailsPageViewModel.cs

@@ -8,9 +8,9 @@ using CommunityToolkit.Mvvm.Messaging;
 using Wino.Core.Domain;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Navigation;
-using Wino.Core.Domain.Models.Requests;
 using Wino.Core.Messages.Navigation;
 using Wino.Mail.ViewModels.Data;
+using Wino.Messages.Server;
 
 namespace Wino.Mail.ViewModels
 {

Wino.Mail/Activation/BackgroundActivationHandlerEx.cs

@@ -0,0 +1,41 @@
+using System.Threading.Tasks;
+using Windows.ApplicationModel;
+using Windows.ApplicationModel.Activation;
+using Windows.ApplicationModel.AppService;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Activation
+{
+    internal class BackgroundActivationHandlerEx : ActivationHandler<BackgroundActivatedEventArgs>
+    {
+        private readonly IWinoServerConnectionManager<AppServiceConnection> _winoServerConnectionManager;
+
+        public BackgroundActivationHandlerEx(IWinoServerConnectionManager<AppServiceConnection> winoServerConnectionManager)
+        {
+            _winoServerConnectionManager = winoServerConnectionManager;
+        }
+
+        protected override Task HandleInternalAsync(BackgroundActivatedEventArgs args)
+        {
+            if (args.TaskInstance == null || args.TaskInstance.TriggerDetails == null) return Task.CompletedTask;
+
+            if (args.TaskInstance.TriggerDetails is AppServiceTriggerDetails appServiceTriggerDetails)
+            {
+                // only accept connections from callers in the same package
+                if (appServiceTriggerDetails.CallerPackageFamilyName == Package.Current.Id.FamilyName)
+                {
+                    // Connection established from the fulltrust process
+                    _winoServerConnectionManager.Connection = appServiceTriggerDetails.AppServiceConnection;
+
+                    var deferral = args.TaskInstance.GetDeferral();
+
+                    args.TaskInstance.Canceled += App.Current.OnBackgroundTaskCanceled;
+
+                    // AppServiceConnected?.Invoke(this, args.TaskInstance.TriggerDetails as AppServiceTriggerDetails);
+                }
+            }
+
+            return Task.CompletedTask;
+        }
+    }
+}

Wino.Mail/App.xaml.cs

@@ -10,6 +10,8 @@ using Microsoft.Extensions.DependencyInjection;
 using Serilog;
 using Windows.ApplicationModel;
 using Windows.ApplicationModel.Activation;
+using Windows.ApplicationModel.AppService;
+using Windows.ApplicationModel.Background;
 using Windows.ApplicationModel.Core;
 using Windows.Foundation.Metadata;
 using Windows.Storage;
@@ -37,6 +39,7 @@ namespace Wino
         public new static App Current => (App)Application.Current;
         public IServiceProvider Services { get; }
 
+        private readonly IWinoServerConnectionManager<AppServiceConnection> _appServiceConnectionManager;
         private readonly ILogInitializer _logInitializer;
         private readonly IThemeService _themeService;
         private readonly IDatabaseService _databaseService;
@@ -47,8 +50,9 @@ namespace Wino
         // Order matters.
         private List<IInitializeAsync> initializeServices => new List<IInitializeAsync>()
         {
-            _translationService,
             _databaseService,
+            _appServiceConnectionManager,
+            _translationService,
             _themeService,
             _synchronizerFactory
         };
@@ -60,6 +64,7 @@ namespace Wino
             UnhandledException += OnAppUnhandledException;
             EnteredBackground += OnEnteredBackground;
             LeavingBackground += OnLeavingBackground;
+            Suspending += OnSuspending;
 
             Services = ConfigureServices();
 
@@ -70,6 +75,7 @@ namespace Wino
             ConfigurePrelaunch();
             ConfigureXbox();
 
+            _appServiceConnectionManager = Services.GetService<IWinoServerConnectionManager<AppServiceConnection>>();
             _themeService = Services.GetService<IThemeService>();
             _databaseService = Services.GetService<IDatabaseService>();
             _appInitializerService = Services.GetService<IAppInitializerService>();
@@ -79,6 +85,12 @@ namespace Wino
             Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
         }
 
+        private void OnSuspending(object sender, SuspendingEventArgs e)
+        {
+            var deferral = e.SuspendingOperation.GetDeferral();
+            deferral.Complete();
+        }
+
         private void LogActivation(string log) => Log.Information($"{WinoLaunchLogPrefix}{log}");
         private void OnLeavingBackground(object sender, LeavingBackgroundEventArgs e) => LogActivation($"Wino went foreground.");
         private void OnEnteredBackground(object sender, EnteredBackgroundEventArgs e) => LogActivation($"Wino went background.");
@@ -101,7 +113,8 @@ namespace Wino
         private void RegisterActivationHandlers(IServiceCollection services)
         {
             services.AddTransient<ProtocolActivationHandler>();
-            services.AddTransient<BackgroundActivationHandler>();
+            services.AddTransient<BackgroundActivationHandlerEx>();
+            // services.AddTransient<BackgroundActivationHandler>();
             services.AddTransient<ToastNotificationActivationHandler>();
             services.AddTransient<FileActivationHandler>();
         }
@@ -246,7 +259,10 @@ namespace Wino
 
         private async Task ActivateWinoAsync(object args)
         {
-            await PreInitializationAsync();
+            foreach (var service in initializeServices)
+            {
+                await service.InitializeAsync().ConfigureAwait(false);
+            }
 
             if (IsInteractiveLaunchArgs(args))
             {
@@ -270,37 +286,6 @@ namespace Wino
             }
         }
 
-        /// <summary>
-        /// Tasks that must run before the activation and launch.
-        /// Regardless of whether it's an interactive launch or not.
-        /// </summary>
-        private async Task PreInitializationAsync()
-        {
-            // Handle migrations.
-            // TODO: Automate migration process with more proper way.
-
-            if (!ApplicationData.Current.LocalSettings.Values.ContainsKey("Migration_169"))
-            {
-                try
-                {
-                    await _appInitializerService.MigrateAsync();
-                }
-                catch (Exception ex)
-                {
-                    Log.Error(ex, $"{WinoLaunchLogPrefix}Migration_169 failed.");
-                }
-                finally
-                {
-                    ApplicationData.Current.LocalSettings.Values["Migration_169"] = true;
-                }
-            }
-
-            foreach (var service in initializeServices)
-            {
-                await service.InitializeAsync();
-            }
-        }
-
         private async Task HandleActivationAsync(object activationArgs)
         {
             var activationHandler = GetActivationHandlers().FirstOrDefault(h => h.CanHandle(activationArgs));
@@ -323,9 +308,15 @@ namespace Wino
         private IEnumerable<ActivationHandler> GetActivationHandlers()
         {
             yield return Services.GetService<ProtocolActivationHandler>();
-            yield return Services.GetService<BackgroundActivationHandler>();
+            yield return Services.GetService<BackgroundActivationHandlerEx>(); // New app service background task handler.
+            // yield return Services.GetService<BackgroundActivationHandler>(); // Old UWP background task handler.
             yield return Services.GetService<ToastNotificationActivationHandler>();
             yield return Services.GetService<FileActivationHandler>();
         }
+
+        public void OnBackgroundTaskCanceled(IBackgroundTaskInstance sender, BackgroundTaskCancellationReason reason)
+        {
+            Log.Information($"Background task {sender.Task.Name} was canceled. Reason: {reason}");
+        }
     }
 }

Wino.Mail/AppShell.xaml

@@ -515,6 +515,14 @@
                     IsOpen="False"
                     PreferredPlacement="Bottom"
                     Target="{x:Bind ShellInfoBar}" />
+
+                <Grid
+                    Grid.Column="1"
+                    Padding="14"
+                    HorizontalAlignment="Right"
+                    VerticalAlignment="Bottom">
+                    <TextBlock Text="{x:Bind ViewModel.ServerConnectionManager.Status, Mode=OneWay}" />
+                </Grid>
             </Grid>
         </muxc:NavigationView>
 

Wino.Mail/Package.appxmanifest

@@ -92,13 +92,6 @@
 			    Enabled="false"
 			    DisplayName="Wino Startup Service" />
 		</uap5:Extension>
-		  
-		<!-- Registration of full trust backend application. -->
-		<!--<uap:Extension Category="windows.appService">
-			<uap:AppService Name="Wino.AppService" />
-		</uap:Extension>-->
-		  
-		<!--<desktop:Extension Category="windows.fullTrustProcess" Executable="Wino.AppService.exe" />-->
       </Extensions>
     </Application>
   </Applications>

Wino.Mail/Services/DialogService.cs

@@ -15,12 +15,12 @@ using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Accounts;
 using Wino.Core.Domain.Models.Folders;
-using Wino.Core.Domain.Models.Requests;
 using Wino.Core.Domain.Models.Synchronization;
 using Wino.Core.Messages.Shell;
 using Wino.Core.Messages.Synchronization;
 using Wino.Core.UWP.Extensions;
 using Wino.Dialogs;
+using Wino.Messages.Server;
 
 namespace Wino.Services
 {

Wino.Mail/Views/NewAccountManagementPage.xaml.cs

@@ -6,9 +6,9 @@ using MoreLinq;
 using Windows.UI.Xaml.Media.Animation;
 using Windows.UI.Xaml.Navigation;
 using Wino.Core.Domain.Enums;
-using Wino.Core.Domain.Models.Requests;
 using Wino.Core.Messages.Navigation;
 using Wino.Mail.ViewModels.Data;
+using Wino.Messages.Server;
 using Wino.Views.Abstract;
 using Wino.Views.Account;
 using Wino.Views.Settings;

Wino.Mail/Wino.Mail.csproj

@@ -229,6 +229,7 @@
   <ItemGroup>
     <Compile Include="Activation\ActivationHandler.cs" />
     <Compile Include="Activation\BackgroundActivationHandler.cs" />
+    <Compile Include="Activation\BackgroundActivationHandlerEx.cs" />
     <Compile Include="Activation\DefaultActivationHandler.cs" />
     <Compile Include="Activation\FileActivationHandler.cs" />
     <Compile Include="Activation\ProtocolActivationHandler.cs" />
@@ -770,7 +771,6 @@
     <Content Include="Assets\Square44x44Logo.scale-200.png" />
     <Content Include="Assets\Square44x44Logo.targetsize-24_altform-unplated.png" />
     <Content Include="Assets\Wide310x150Logo.scale-200.png" />
-    <None Include="Wino.Mail_TemporaryKey.pfx" />
   </ItemGroup>
   <ItemGroup>
     <Content Include="Assets\Thumbnails\uber.com.png" />
@@ -812,7 +812,9 @@
       <Name>Windows Desktop Extensions for the UWP</Name>
     </SDKReference>
   </ItemGroup>
-  <ItemGroup />
+  <ItemGroup>
+    <Folder Include="Server\" />
+  </ItemGroup>
   <PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '14.0' ">
     <VisualStudioVersion>14.0</VisualStudioVersion>
   </PropertyGroup>

Wino.Messages/Client/Accounts/AccountMenuItemExtended.cs

@@ -1,7 +1,7 @@
 using System;
 using Wino.Core.Domain.Models.MailItem;
 
-namespace Wino.Messages.Accounts
+namespace Wino.Messages.Client.Accounts
 {
     /// <summary>
     /// When menu item for the account is requested to be extended.

Wino.Messages/Client/Accounts/AccountMenuItemsReordered.cs

@@ -1,7 +1,7 @@
 using System;
 using System.Collections.Generic;
 
-namespace Wino.Messages.Accounts
+namespace Wino.Messages.Client.Accounts
 {
     /// <summary>
     /// Emitted when account menu items are reordered.

Wino.Messages/Client/Accounts/AccountsMenuRefreshRequested.cs

@@ -1,4 +1,4 @@
-namespace Wino.Messages.Accounts
+namespace Wino.Messages.Client.Accounts
 {
     /// <summary>
     /// When a full menu refresh for accounts menu is requested.

Wino.Messages/Client/Authorization/ProtocolAuthorizationCallbackReceived.cs

@@ -1,6 +1,6 @@
 using System;
 
-namespace Wino.Messages.Authorization
+namespace Wino.Messages.Client.Authorization
 {
     /// <summary>
     /// When Google authentication makes a callback to the app via protocol activation to the app.

Wino.Messages/Client/Mails/CancelRenderingContentRequested.cs

@@ -1,4 +1,4 @@
-namespace Wino.Messages.Mails
+namespace Wino.Messages.Client.Mails
 {
     /// <summary>
     /// When rendered html is requested to cancel.

Wino.Messages/Client/Mails/ClearMailSelectionsRequested.cs

@@ -1,4 +1,4 @@
-namespace Wino.Messages.Mails
+namespace Wino.Messages.Client.Mails
 {
     /// <summary>
     /// When reset all mail selections requested.

Wino.Messages/Client/Mails/CreateNewComposeMailRequested.cs

@@ -1,6 +1,6 @@
 using Wino.Core.Domain.Models.Reader;
 
-namespace Wino.Messages.Mails
+namespace Wino.Messages.Client.Mails
 {
     /// <summary>
     /// When a new composing requested.

Wino.Messages/Client/Mails/DisposeRenderingFrameRequested.cs

@@ -1,4 +1,4 @@
-namespace Wino.Messages.Mails
+namespace Wino.Messages.Client.Mails
 {
     /// <summary>
     /// When rendering frame should be disposed.

Wino.Messages/Client/Mails/HtmlRenderingRequested.cs

@@ -1,4 +1,4 @@
-namespace Wino.Messages.Mails
+namespace Wino.Messages.Client.Mails
 {
     /// <summary>
     /// When existing a new html is requested to be rendered due to mail selection or signature.

Wino.Messages/Client/Mails/ImapSetupBackNavigationRequested.cs

@@ -1,6 +1,6 @@
 using System;
 
-namespace Wino.Messages.Mails
+namespace Wino.Messages.Client.Mails
 {
     /// <summary>
     /// When IMAP setup dialog requestes back breadcrumb navigation.

Wino.Messages/Client/Mails/ImapSetupDismissRequested.cs

@@ -1,6 +1,6 @@
 using Wino.Core.Domain.Entities;
 
-namespace Wino.Messages.Mails
+namespace Wino.Messages.Client.Mails
 {
     /// <summary>
     /// When user asked to dismiss IMAP setup dialog.

Wino.Messages/Client/Mails/ImapSetupNavigationRequested.cs

@@ -1,6 +1,6 @@
 using System;
 
-namespace Wino.Messages.Mails
+namespace Wino.Messages.Client.Mails
 {
     /// <summary>
     /// When IMAP setup dialog breadcrumb navigation requested.

Wino.Messages/Client/Mails/MailItemNavigationRequested.cs

@@ -1,6 +1,6 @@
 using System;
 
-namespace Wino.Messages.Mails
+namespace Wino.Messages.Client.Mails
 {
     /// <summary>
     /// When a IMailItem needs to be navigated (or selected)

Wino.Messages/Client/Mails/NavigateMailFolderEvent.cs

@@ -2,7 +2,7 @@
 using Wino.Core.Domain.Interfaces;
 using Wino.Core.Domain.Models.Navigation;
 
-namespace Wino.Messages.Mails
+namespace Wino.Messages.Client.Mails
 {
     /// <summary>
     /// Selects the given FolderMenuItem in the shell folders list.

Wino.Messages/Client/Mails/RefreshUnreadCountsMessage.cs

@@ -1,6 +1,6 @@
 using System;
 
-namespace Wino.Messages.Mails
+namespace Wino.Messages.Client.Mails
 {
     public record RefreshUnreadCountsMessage(Guid AccountId);
 }

Wino.Messages/Client/Mails/SaveAsPDFRequested.cs

@@ -2,7 +2,7 @@
 using System.Collections.Generic;
 using System.Text;
 
-namespace Wino.Messages.Mails
+namespace Wino.Messages.Client.Mails
 {
     /// <summary>
     /// When mail save as PDF requested.

Wino.Messages/Client/Mails/SelectedMailItemsChanged.cs

@@ -1,4 +1,4 @@
-namespace Wino.Messages.Mails
+namespace Wino.Messages.Client.Mails
 {
     /// <summary>
     /// When selected mail count is changed.

Wino.Messages/Client/Navigation/BackBreadcrumNavigationRequested.cs

@@ -1,4 +1,4 @@
-namespace Wino.Messages.Navigation
+namespace Wino.Messages.Client.Navigation
 {
     /// <summary>
     /// When back navigation is requested for breadcrumb pages.

Wino.Messages/Client/Navigation/BreadcrumbNavigationRequested.cs

@@ -1,6 +1,6 @@
 using Wino.Core.Domain.Enums;
 
-namespace Wino.Messages.Navigation
+namespace Wino.Messages.Client.Navigation
 {
     /// <summary>
     /// When Breadcrumb control navigation requested.

Wino.Messages/Client/Navigation/NavigateSettingsRequested.cs

@@ -1,4 +1,4 @@
-namespace Wino.Messages.Navigation
+namespace Wino.Messages.Client.Navigation
 {
     /// <summary>
     /// Navigates to settings page.

Wino.Messages/Client/Shell/ApplicationThemeChanged.cs

@@ -1,4 +1,4 @@
-namespace Wino.Messages.Shell
+namespace Wino.Messages.Client.Shell
 {
     /// <summary>
     /// When the application theme changed.

Wino.Messages/Client/Shell/CreateNewMailWithMultipleAccountsRequested.cs

@@ -1,7 +1,7 @@
 using System.Collections.Generic;
 using Wino.Core.Domain.Entities;
 
-namespace Wino.Messages.Shell
+namespace Wino.Messages.Client.Shell
 {
     /// <summary>
     /// When 

Wino.Messages/Client/Shell/InfoBarMessageRequested.cs

@@ -1,7 +1,7 @@
 using System;
 using Wino.Core.Domain.Enums;
 
-namespace Wino.Messages.Shell
+namespace Wino.Messages.Client.Shell
 {
     /// <summary>
     /// For displaying right sliding notification message in shell.

Wino.Messages/Client/Shell/LanguageChanged.cs

@@ -1,4 +1,4 @@
-namespace Wino.Messages.Shell
+namespace Wino.Messages.Client.Shell
 {
     /// <summary>
     /// When application language is updated.

Wino.Messages/Client/Shell/MailtoProtocolMessageRequested.cs

@@ -1,4 +1,4 @@
-namespace Wino.Messages.Shell
+namespace Wino.Messages.Client.Shell
 {
     public class MailtoProtocolMessageRequested { }
 }

Wino.Messages/Client/Shell/NavigationPaneModeChanged.cs

@@ -1,6 +1,6 @@
 using Wino.Core.Domain.Enums;
 
-namespace Wino.Messages.Shell
+namespace Wino.Messages.Client.Shell
 {
     /// <summary>
     /// When navigation pane mode is changed.

Wino.Messages/Client/Shell/ShellStateUpdated.cs

@@ -1,4 +1,4 @@
-namespace Wino.Messages.Shell
+namespace Wino.Messages.Client.Shell
 {
     /// <summary>
     /// When reading mail state or reader pane narrowed state is changed.

Wino.Messages/Client/Synchronization/AccountSynchronizationCompleted.cs

@@ -1,7 +1,7 @@
 using System;
 using Wino.Core.Domain.Enums;
 
-namespace Wino.Messages.Synchronization
+namespace Wino.Messages.Client.Synchronization
 {
     public record AccountSynchronizationCompleted(Guid AccountId, SynchronizationCompletedState Result, Guid? SynchronizationTrackingId);
 }

Wino.Messages/Client/Synchronization/AccountSynchronizerStateChanged.cs

@@ -1,7 +1,7 @@
 using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
 
-namespace Wino.Messages.Synchronization
+namespace Wino.Messages.Client.Synchronization
 {
     /// <summary>
     /// Emitted when synchronizer state is updated.

Wino.Messages/Client/Synchronization/NewSynchronizationRequested.cs

@@ -1,6 +1,6 @@
 using Wino.Core.Domain.Models.Synchronization;
 
-namespace Wino.Messages.Synchronization
+namespace Wino.Messages.Client.Synchronization
 {
     /// <summary>
     /// Triggers a new synchronization if possible.

Wino.Messages/Server/AccountCreatedMessage.cs

@@ -0,0 +1,7 @@
+using Wino.Core.Domain.Entities;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Messages.Server
+{
+    public record AccountCreatedMessage(MailAccount Account) : IServerMessage;
+}

Wino.Messages/Server/AccountRemovedMessage.cs

@@ -0,0 +1,7 @@
+using Wino.Core.Domain.Entities;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Messages.Server
+{
+    public record AccountRemovedMessage(MailAccount Account) : IServerMessage;
+}

Wino.Messages/Server/AccountUpdatedMessage.cs

@@ -0,0 +1,7 @@
+using Wino.Core.Domain.Entities;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Messages.Server
+{
+    public record AccountUpdatedMessage(MailAccount Account) : IServerMessage;
+}

Wino.Messages/Server/DraftCreated.cs

@@ -0,0 +1,7 @@
+using Wino.Core.Domain.Entities;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Messages.Server
+{
+    public record DraftCreated(MailCopy DraftMail, MailAccount Account) : IServerMessage;
+}

Wino.Messages/Server/DraftFailed.cs

@@ -0,0 +1,7 @@
+using Wino.Core.Domain.Entities;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Messages.Server
+{
+    public record DraftFailed(MailCopy DraftMail, MailAccount Account) : IServerMessage;
+}

Wino.Messages/Server/DraftMapped.cs

@@ -0,0 +1,6 @@
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Messages.Server
+{
+    public record DraftMapped(string LocalDraftCopyId, string RemoteDraftCopyId) : IServerMessage;
+}

Wino.Messages/Server/FolderRenamed.cs

@@ -0,0 +1,7 @@
+using Wino.Core.Domain.Interfaces;
+using Wino.Core.Domain.Models.Folders;
+
+namespace Wino.Messages.Server
+{
+    public record FolderRenamed(IMailItemFolder MailItemFolder) : IServerMessage;
+}

Wino.Messages/Server/FolderSynchronizationEnabled.cs

@@ -0,0 +1,7 @@
+using Wino.Core.Domain.Interfaces;
+using Wino.Core.Domain.Models.Folders;
+
+namespace Wino.Messages.Server
+{
+    public record FolderSynchronizationEnabled(IMailItemFolder MailItemFolder) : IServerMessage;
+}

Wino.Messages/Server/MailAddedMessage.cs

@@ -0,0 +1,7 @@
+using Wino.Core.Domain.Entities;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Messages.Server
+{
+    public record MailAddedMessage(MailCopy AddedMail) : IServerMessage;
+}

Wino.Messages/Server/MailDownloadedMessage.cs

@@ -0,0 +1,7 @@
+using Wino.Core.Domain.Entities;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Messages.Server
+{
+    public record MailDownloadedMessage(MailCopy DownloadedMail) : IServerMessage;
+}

Wino.Messages/Server/MailRemovedMessage.cs

@@ -0,0 +1,7 @@
+using Wino.Core.Domain.Entities;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Messages.Server
+{
+    public record MailRemovedMessage(MailCopy RemovedMail) : IServerMessage;
+}

Wino.Messages/Server/MailUpdatedMessage.cs

@@ -0,0 +1,7 @@
+using Wino.Core.Domain.Entities;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Messages.Server
+{
+    public record MailUpdatedMessage(MailCopy UpdatedMail) : IServerMessage;
+}

Wino.Messages/Server/MergedInboxRenamed.cs

@@ -0,0 +1,7 @@
+using System;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Messages.Server
+{
+    public record MergedInboxRenamed(Guid MergedInboxId, string NewName) : IServerMessage;
+}

Wino.Messages/UIMessages.cs

@@ -1,25 +0,0 @@
-using System;
-using Wino.Core.Domain.Entities;
-using Wino.Core.Domain.Interfaces;
-using Wino.Core.Domain.Models.Folders;
-
-namespace Wino.Core.Domain.Models.Requests
-{
-    public record MailAddedMessage(MailCopy AddedMail) : IUIMessage;
-    public record MailRemovedMessage(MailCopy RemovedMail) : IUIMessage;
-    public record MailUpdatedMessage(MailCopy UpdatedMail) : IUIMessage;
-    public record MailDownloadedMessage(MailCopy DownloadedMail) : IUIMessage;
-
-    public record AccountCreatedMessage(MailAccount Account) : IUIMessage;
-    public record AccountRemovedMessage(MailAccount Account) : IUIMessage;
-    public record AccountUpdatedMessage(MailAccount Account) : IUIMessage;
-
-    public record DraftCreated(MailCopy DraftMail, MailAccount Account) : IUIMessage;
-    public record DraftFailed(MailCopy DraftMail, MailAccount Account) : IUIMessage;
-    public record DraftMapped(string LocalDraftCopyId, string RemoteDraftCopyId) : IUIMessage;
-
-    public record MergedInboxRenamed(Guid MergedInboxId, string NewName) : IUIMessage;
-
-    public record FolderRenamed(IMailItemFolder MailItemFolder) : IUIMessage;
-    public record FolderSynchronizationEnabled(IMailItemFolder MailItemFolder) : IUIMessage;
-}