Full trust Wino Server implementation. (#295)

* Separation of messages. Introducing Wino.Messages library.

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

* Remove debug code.

* Enable generating assembly info to deal with unsupported os platform warnings.

* Fix server-client connection.

* UIMessage communication. Single instancing for server and re-connection mechanism on suspension.

* Removed IWinoSynchronizerFactory from UWP project.

* Removal of background task service from core.

* Delegating changes to UI and triggering new background synchronization.

* Fix build error.

* Moved core lib messages to Messaging project.

* Better client-server communication. Handling of requests in the server. New synchronizer factory in the server.

* WAM broker and MSAL token caching for OutlookAuthenticator. Handling account creation for Outlook.

* WinoServerResponse basics.

* Delegating protocol activation for Gmail authenticator.

* Adding margin to searchbox to match action bar width.

* Move libraries into lib folder.

* Storing base64 encoded mime on draft creation instead of MimeMessage object. Fixes serialization/deserialization issue with S.T.Json

* Scrollbar adjustments

* WınoExpander for thread expander layout ıssue.

* Handling synchronizer state changes.

* Double init on background activation.

* FIxing packaging issues and new Wino Mail launcher protocol for activation from full thrust process.

* Remove debug deserialization.

* Remove debug code.

* Making sure the server connection is established when the app is launched.

* Thrust -> Trust string replacement...

* Rename package to Wino Mail

* Enable translated values in the server.

* Fixed an issue where toast activation can't find the clicked mail after the folder is initialized.

* Revert debug code.

* Change server background sync to every 3 minute and Inbox only synchronization.

* Revert google auth changes.

* App preferences page.

* Changing tray icon visibility on preference change.

* Start the server with invisible tray icon if set to invisible.

* Reconnect button on the title bar.

* Handling of toast actions.

* Enable x86 build for server during packaging.

* Get rid of old background tasks and v180 migration.

* Terminate client when Exit clicked in server.

* Introducing SynchronizationSource to prevent notifying UI after server tick synchronization.

* Remove confirmAppClose restricted capability and unused debug code in manifest.

* Closing the reconnect info popup when reconnect is clicked.

* Custom RetryHandler for OutlookSynchronizer and separating client/server logs.

* Running server on Windows startup.

* Fix startup exe.

* Fix for expander list view item paddings.

* Force full sync on app launch instead of Inbox.

* Fix draft creation.

* Fix an issue with custom folder sync logic.

* Reporting back account sync progress from server.

* Fix sending drafts and missing notifications for imap.

* Changing imap folder sync requirements.

* Retain file  count is set to 3.

* Disabled swipe gestures temporarily due to native crash
 with SwipeControl

* Save all attachments implementation.

* Localization for save all attachments button.

* Fix logging dates for logs.

* Fixing ARM64 build.

* Add ARM64 build config to packaging project.

* Comment out OutOfProcPDB for ARM64.

* Hnadling GONE response for Outlook folder synchronization.

Wino.Core.Domain/Interfaces/IAppInitializerService.cs

@@ -1,12 +0,0 @@
-using System.Threading.Tasks;
-
-namespace Wino.Core.Domain.Interfaces
-{
-    public interface IAppInitializerService
-    {
-        string GetApplicationDataFolder();
-        string GetPublisherSharedFolder();
-
-        Task MigrateAsync();
-    }
-}

Wino.Core.Domain/Interfaces/IApplicationConfiguration.cs

@@ -0,0 +1,21 @@
+namespace Wino.Core.Domain.Interfaces
+{
+    /// <summary>
+    /// Singleton object that holds the application data folder path and the publisher shared folder path.
+    /// Load the values before calling any service.
+    /// App data folder is used for storing files.
+    /// Pubhlisher cache folder is only used for database file so other apps can access it in the same package by same publisher.
+    /// </summary>
+    public interface IApplicationConfiguration
+    {
+        /// <summary>
+        /// Application data folder.
+        /// </summary>
+        string ApplicationDataFolderPath { get; set; }
+
+        /// <summary>
+        /// Publisher shared folder path.
+        /// </summary>
+        string PublisherSharedFolderPath { get; set; }
+    }
+}

Wino.Core.Domain/Interfaces/IAuthenticator.cs

@@ -1,5 +1,4 @@
-using System;
-using System.Threading.Tasks;
+using System.Threading.Tasks;
 using Wino.Core.Domain.Entities;
 using Wino.Core.Domain.Enums;
 
@@ -23,28 +22,12 @@ namespace Wino.Core.Domain.Interfaces
 
         /// <summary>
         /// Initial creation of token. Requires user interaction.
-        /// This will save token into database, but still returns for account creation
+        /// This will cache the token but still returns for account creation
         /// since account address is required.
         /// </summary>
-        /// <param name="expectedAccountAddress">Token cache might ask for regeneration of token for specific
-        /// account address. If one is provided and re-generation native token doesn't belong to this address
-        /// token saving to database won't happen.</param>
         /// <returns>Freshly created TokenInformation..</returns>
         Task<TokenInformation> GenerateTokenAsync(MailAccount account, bool saveToken);
 
-        /// <summary>
-        /// Required for external authorization on launched browser to continue.
-        /// Used for Gmail.
-        /// </summary>
-        /// <param name="authorizationResponseUri">Response's redirect uri.</param>
-        void ContinueAuthorization(Uri authorizationResponseUri);
-
-        /// <summary>
-        /// For external browser required authentications.
-        /// Canceling Gmail authentication dialog etc.
-        /// </summary>
-        void CancelAuthorization();
-
         /// <summary>
         /// ClientId in case of needed for authorization/authentication.
         /// </summary>

Wino.Core.Domain/Interfaces/IAuthenticatorTypes.cs

@@ -0,0 +1,6 @@
+namespace Wino.Core.Domain.Interfaces
+{
+    public interface IOutlookAuthenticator : IAuthenticator { }
+    public interface IGmailAuthenticator : IAuthenticator { }
+    public interface IImapAuthenticator : IAuthenticator { }
+}

Wino.Core.Domain/Interfaces/IBaseSynchronizer.cs

@@ -0,0 +1,54 @@
+using System.Threading;
+using System.Threading.Tasks;
+using MailKit;
+using Wino.Core.Domain.Entities;
+using Wino.Core.Domain.Enums;
+using Wino.Core.Domain.Models.MailItem;
+using Wino.Core.Domain.Models.Synchronization;
+
+namespace Wino.Core.Domain.Interfaces
+{
+    public interface IBaseSynchronizer
+    {
+        /// <summary>
+        /// Account that is assigned for this synchronizer.
+        /// </summary>
+        MailAccount Account { get; }
+
+        /// <summary>
+        /// Synchronizer state.
+        /// </summary>
+        AccountSynchronizerState State { get; }
+
+        /// <summary>
+        /// Queues a single request to be executed in the next synchronization.
+        /// </summary>
+        /// <param name="request">Request to queue.</param>
+        void QueueRequest(IRequestBase request);
+
+        /// <summary>
+        /// TODO
+        /// </summary>
+        /// <returns>Whether active synchronization is stopped or not.</returns>
+        bool CancelActiveSynchronization();
+
+        /// <summary>
+        /// Performs a full synchronization with the server with given options.
+        /// This will also prepares batch requests for execution.
+        /// Requests are executed in the order they are queued and happens before the synchronization.
+        /// Result of the execution queue is processed during the synchronization.
+        /// </summary>
+        /// <param name="options">Options for synchronization.</param>
+        /// <param name="cancellationToken">Cancellation token.</param>
+        /// <returns>Result summary of synchronization.</returns>
+        Task<SynchronizationResult> SynchronizeAsync(SynchronizationOptions options, CancellationToken cancellationToken = default);
+
+        /// <summary>
+        /// Downloads a single MIME message from the server and saves it to disk.
+        /// </summary>
+        /// <param name="mailItem">Mail item to download from server.</param>
+        /// <param name="transferProgress">Optional progress reporting for download operation.</param>
+        /// <param name="cancellationToken">Cancellation token.</param>
+        Task DownloadMissingMimeMessageAsync(IMailItem mailItem, ITransferProgress transferProgress, CancellationToken cancellationToken = default);
+    }
+}

Wino.Core.Domain/Interfaces/IClientMessage.cs

@@ -0,0 +1,8 @@
+namespace Wino.Core.Domain.Interfaces
+{
+    /// <summary>
+    /// All messages that Client sends to Server and awaits a response in return.
+    /// For example; triggering a new synchronization request.
+    /// </summary>
+    public interface IClientMessage;
+}

Wino.Core.Domain/Interfaces/ILogInitializer.cs

@@ -2,7 +2,7 @@
 {
     public interface ILogInitializer
     {
-        void SetupLogger(string logFolderPath);
+        void SetupLogger(string fullLogFilePath);
 
         void RefreshLoggingLevel();
     }

Wino.Core.Domain/Interfaces/IMailService.cs

@@ -11,7 +11,7 @@ namespace Wino.Core.Domain.Interfaces
     {
         Task<MailCopy> GetSingleMailItemAsync(string mailCopyId, string remoteFolderId);
         Task<MailCopy> GetSingleMailItemAsync(Guid uniqueMailId);
-        Task<MailCopy> CreateDraftAsync(MailAccount composerAccount, MimeMessage generatedReplyMime, MimeMessage replyingMimeMessage = null, IMailItem replyingMailItem = null);
+        Task<MailCopy> CreateDraftAsync(MailAccount composerAccount, string generatedReplyMimeMessageBase64, MimeMessage replyingMimeMessage = null, IMailItem replyingMailItem = null);
         Task<List<IMailItem>> FetchMailsAsync(MailListInitializationOptions options);
 
         /// <summary>
@@ -51,7 +51,16 @@ namespace Wino.Core.Domain.Interfaces
         /// <param name="newThreadId"></param>
         Task MapLocalDraftAsync(string newMailCopyId, string newDraftId, string newThreadId);
 
-        Task<MimeMessage> CreateDraftMimeMessageAsync(Guid accountId, DraftCreationOptions options);
+        /// <summary>
+        /// Creates a draft message with the given options.
+        /// </summary>
+        /// <param name="accountId">Account to create draft for.</param>
+        /// <param name="options">Draft creation options.</param>
+        /// <returns>
+        /// Base64 encoded string of MimeMessage object.
+        /// This is mainly for serialization purposes.
+        /// </returns>
+        Task<string> CreateDraftMimeBase64Async(Guid accountId, DraftCreationOptions options);
         Task UpdateMailAsync(MailCopy mailCopy);
 
         /// <summary>
@@ -92,5 +101,14 @@ namespace Wino.Core.Domain.Interfaces
         /// </summary>
         /// <param name="folderId">Folder id to get unread mails for.</param>
         Task<List<MailCopy>> GetUnreadMailsByFolderIdAsync(Guid folderId);
+
+        /// <summary>
+        /// Checks whether the mail exists in the folder.
+        /// When deciding Create or Update existing mail, we need to check if the mail exists in the folder.
+        /// </summary>
+        /// <param name="messageId">Message id</param>
+        /// <param name="folderId">Folder's local id.</param>
+        /// <returns>Whether mail exists in the folder or not.</returns>
+        Task<bool> IsMailExistsAsync(string mailCopyId, Guid folderId);
     }
 }

Wino.Core.Domain/Interfaces/INativeAppService.cs

@@ -11,6 +11,20 @@ namespace Wino.Core.Domain.Interfaces
         Task<string> GetEditorBundlePathAsync();
         Task LaunchFileAsync(string filePath);
         Task LaunchUriAsync(Uri uri);
+
+        /// <summary>
+        /// Launches the default browser with the specified uri and waits for protocol activation to finish.
+        /// </summary>
+        /// <param name="authenticator"></param>
+        /// <returns>Response callback from the browser.</returns>
+        Task<Uri> GetAuthorizationResponseUriAsync(IAuthenticator authenticator, string authorizationUri);
+
+        /// <summary>
+        /// Finalizes GetAuthorizationResponseUriAsync for current IAuthenticator.
+        /// </summary>
+        /// <param name="authorizationResponseUri"></param>
+        void ContinueAuthorization(Uri authorizationResponseUri);
+
         bool IsAppRunning();
 
         string GetFullAppVersion();
@@ -21,5 +35,11 @@ namespace Wino.Core.Domain.Interfaces
         /// Some cryptographic shit is needed for requesting Google authentication in UWP.
         /// </summary>
         GoogleAuthorizationRequest GetGoogleAuthorizationRequest();
+
+        /// <summary>
+        /// Gets or sets the function that returns a pointer for main window hwnd for UWP.
+        /// This is used to display WAM broker dialog on running UWP app called by a windowless server code.
+        /// </summary>
+        Func<IntPtr> GetCoreWindowHwnd { get; set; }
     }
 }

Wino.Core.Domain/Interfaces/IPreferencesService.cs

@@ -150,5 +150,10 @@ namespace Wino.Core.Domain.Interfaces
         /// Setting: Whether the next item should be automatically selected once the current item is moved or removed.
         /// </summary>
         bool AutoSelectNextItem { get; set; }
+
+        /// <summary>
+        /// Setting: Gets or sets what should happen to server app when the client is terminated.
+        /// </summary>
+        ServerBackgroundMode ServerTerminationBehavior { get; set; }
     }
 }

Wino.Core.Domain/Interfaces/IRequestBundle.cs

@@ -22,7 +22,7 @@ namespace Wino.Core.Domain.Interfaces
         TRequest NativeRequest { get; }
     }
 
-    public interface IRequestBase
+    public interface IRequestBase : IClientMessage
     {
         /// <summary>
         /// Synchronizer option to perform.

Wino.Core.Domain/Interfaces/IStartupBehaviorService.cs

@@ -0,0 +1,20 @@
+using System.Threading.Tasks;
+using Wino.Core.Domain.Enums;
+
+namespace Wino.Core.Domain.Interfaces
+{
+    public interface IStartupBehaviorService
+    {
+        /// <summary>
+        /// Gets whether Wino Server is set to launch on startup or not.
+        /// </summary>
+        Task<StartupBehaviorResult> GetCurrentStartupBehaviorAsync();
+
+        /// <summary>
+        /// Enables/disables the current startup behavior for Wino Server.
+        /// </summary>
+        /// <param name="isEnabled">Whether to launch enabled or disabled.</param>
+        /// <returns>True if operation success, false if not.</returns>
+        Task<StartupBehaviorResult> ToggleStartupBehavior(bool isEnabled);
+    }
+}

Wino.Core.Domain/Interfaces/ISynchronizationProgress.cs

@@ -1,19 +0,0 @@
-using System;
-
-namespace Wino.Core.Domain.Interfaces
-{
-    /// <summary>
-    /// An interface for reporting progress of the synchronization.
-    /// Gmail does not support reporting folder progress.
-    /// For others, account progress is calculated based on the number of folders.
-    /// </summary>
-    public interface ISynchronizationProgress
-    {
-        /// <summary>
-        /// Reports account synchronization progress.
-        /// </summary>
-        /// <param name="accountId">Account id for the report.</param>
-        /// <param name="progress">Value. This is always between 0 - 100</param>
-        void AccountProgressUpdated(Guid accountId, int progress);
-    }
-}

Wino.Core.Domain/Interfaces/ISynchronizerFactory.cs

@@ -0,0 +1,11 @@
+using System;
+using System.Threading.Tasks;
+
+namespace Wino.Core.Domain.Interfaces
+{
+    public interface ISynchronizerFactory
+    {
+        Task<IBaseSynchronizer> GetAccountSynchronizerAsync(Guid accountId);
+        Task InitializeAsync();
+    }
+}

Wino.Core.Domain/Interfaces/IUIMessage.cs

@@ -0,0 +1,11 @@
+namespace Wino.Core.Domain.Interfaces
+{
+    /// <summary>
+    /// Interface for all messages to report UI changes from synchronizers to UI.
+    /// None of these messages can't run a code that manipulates database.
+    /// They are sent either from processor or view models to signal some other
+    /// parts of the application.
+    /// </summary>
+
+    public interface IUIMessage;
+}

Wino.Core.Domain/Interfaces/IWinoServerConnectionManager.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Threading.Tasks;
+using Wino.Core.Domain.Enums;
+using Wino.Core.Domain.Models.Server;
+
+namespace Wino.Core.Domain.Interfaces
+{
+    public interface IWinoServerConnectionManager
+    {
+        /// <summary>
+        /// When the connection status changes, this event will be triggered.
+        /// </summary>
+        event EventHandler<WinoServerConnectionStatus> StatusChanged;
+
+        /// <summary>
+        /// Gets the connection status.
+        /// </summary>
+        WinoServerConnectionStatus Status { get; }
+
+        /// <summary>
+        /// Launches Full Trust process (Wino Server) and awaits connection completion.
+        /// If connection is not established in 5 seconds, it will return false.
+        /// If the server process is already running, it'll connect to existing one.
+        /// If the server process is not running, it'll be launched and connection establishment is awaited.
+        /// </summary>
+        /// <returns>Whether connection is established or not.</returns>
+        Task<bool> ConnectAsync();
+
+        /// <summary>
+        /// Disconnects from existing connection and disposes the connection.
+        /// </summary>
+        /// <returns>Whether disconnection is succesfull or not.</returns>
+        Task<bool> DisconnectAsync();
+
+        /// <summary>
+        /// Queues a new user request to be processed by Wino Server.
+        /// Healthy connection must present before calling this method.
+        /// </summary>
+        /// <param name="request">Request to queue for synchronizer in the server.</param>
+        /// <param name="accountId">Account id to queueu request for.</param>
+        Task QueueRequestAsync(IRequestBase request, Guid accountId);
+
+        /// <summary>
+        /// Returns response from server for the given request.
+        /// </summary>
+        /// <typeparam name="TResponse">Response type.</typeparam>
+        /// <typeparam name="TRequestType">Request type.</typeparam>
+        /// <param name="clientMessage">Request type.</param>
+        /// <returns>Response received from the server for the given TResponse type.</returns>
+        Task<WinoServerResponse<TResponse>> GetResponseAsync<TResponse, TRequestType>(TRequestType clientMessage) where TRequestType : IClientMessage;
+    }
+
+    public interface IWinoServerConnectionManager<TAppServiceConnection> : IWinoServerConnectionManager, IInitializeAsync
+    {
+        /// <summary>
+        /// Existing connection handle to the server of TAppServiceConnection type.
+        /// </summary>
+        TAppServiceConnection Connection { get; set; }
+    }
+}

Wino.Core.Domain/Interfaces/IWinoSynchronizerFactory.cs

@@ -0,0 +1,11 @@
+using System;
+using Wino.Core.Domain.Entities;
+
+namespace Wino.Core.Domain.Interfaces
+{
+    public interface IWinoSynchronizerFactory : IInitializeAsync
+    {
+        IBaseSynchronizer GetAccountSynchronizer(Guid accountId);
+        IBaseSynchronizer CreateNewSynchronizer(MailAccount account);
+    }
+}