code.grnet.gr Git - pithos-ms-client/blob - trunk/Pithos.Client.WPF/Shell/ShellViewModel.cs

   1 #region
   2 /* -----------------------------------------------------------------------
   3  * <copyright file="ShellViewModel.cs" company="GRNet">
   4  *
   5  * Copyright 2011-2012 GRNET S.A. All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or
   8  * without modification, are permitted provided that the following
   9  * conditions are met:
  10  *
  11  *   1. Redistributions of source code must retain the above
  12  *      copyright notice, this list of conditions and the following
  13  *      disclaimer.
  14  *
  15  *   2. Redistributions in binary form must reproduce the above
  16  *      copyright notice, this list of conditions and the following
  17  *      disclaimer in the documentation and/or other materials
  18  *      provided with the distribution.
  19  *
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  22  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  23  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  25  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  28  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  31  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  *
  34  * The views and conclusions contained in the software and
  35  * documentation are those of the authors and should not be
  36  * interpreted as representing official policies, either expressed
  37  * or implied, of GRNET S.A.
  38  * </copyright>
  39  * -----------------------------------------------------------------------
  40  */
  41 #endregion
  42 using System.Collections.Concurrent;
  43 using System.Diagnostics;
  44 using System.Diagnostics.Contracts;
  45 using System.IO;
  46 using System.Net;
  47 using System.Reflection;
  48 using System.Runtime.InteropServices;
  49 using System.ServiceModel;
  50 using System.Threading.Tasks;
  51 using System.Windows;
  52 using System.Windows.Controls.Primitives;
  53 using AppLimit.NetSparkle;
  54 using Caliburn.Micro;
  55 using Hardcodet.Wpf.TaskbarNotification;
  56 using Pithos.Client.WPF.Configuration;
  57 using Pithos.Client.WPF.FileProperties;
  58 using Pithos.Client.WPF.Preferences;
  59 using Pithos.Client.WPF.SelectiveSynch;
  60 using Pithos.Client.WPF.Services;
  61 using Pithos.Client.WPF.Shell;
  62 using Pithos.Core;
  63 using Pithos.Core.Agents;
  64 using Pithos.Interfaces;
  65 using System;
  66 using System.Collections.Generic;
  67 using System.Linq;
  68 using Pithos.Network;
  69 using StatusService = Pithos.Client.WPF.Services.StatusService;
  70
  71 namespace Pithos.Client.WPF {
  72         using System.ComponentModel.Composition;
  73
  74
  75         ///<summary>
  76         /// The "shell" of the Pithos application displays the taskbar  icon, menu and notifications.
  77         /// The shell also hosts the status service called by shell extensions to retrieve file info
  78         ///</summary>
  79         ///<remarks>
  80         /// It is a strange "shell" as its main visible element is an icon instead of a window
  81         /// The shell subscribes to the following events:
  82         /// * Notification:  Raised by components that want to notify the user. Usually displayed in a balloon
  83         /// * SelectiveSynchChanges: Notifies that the user made changes to the selective synch folders for an account. Raised by the Selective Synch dialog. Located here because the monitors are here
  84         /// * ShowFilePropertiesEvent: Raised when a shell command requests the display of the file/container properties dialog
  85         ///</remarks>
  86         //TODO: CODE SMELL Why does the shell handle the SelectiveSynchChanges?
  87     [Export(typeof(IShell)), Export(typeof(ShellViewModel))]
  88         public class ShellViewModel : Screen, IStatusNotification, IShell,
  89                 IHandle<Notification>, IHandle<SelectiveSynchChanges>, IHandle<ShowFilePropertiesEvent>
  90         {
  91
  92                 //The Status Checker provides the current synch state
  93                 //TODO: Could we remove the status checker and use events in its place?
  94                 private readonly IStatusChecker _statusChecker;
  95                 private readonly IEventAggregator _events;
  96
  97                 public PithosSettings Settings { get; private set; }
  98
  99
 100                 private readonly ConcurrentDictionary<Uri, PithosMonitor> _monitors = new ConcurrentDictionary<Uri, PithosMonitor>();
 101                 ///<summary>
 102                 /// Dictionary of account monitors, keyed by account
 103                 ///</summary>
 104                 ///<remarks>
 105                 /// One monitor class is created for each account. The Shell needs access to the monitors to execute start/stop/pause commands,
 106                 /// retrieve account and boject info
 107                 ///</remarks>
 108                 // TODO: Does the Shell REALLY need access to the monitors? Could we achieve the same results with a better design?
 109                 // TODO: The monitors should be internal to Pithos.Core, even though exposing them makes coding of the Object and Container windows easier
 110                 public ConcurrentDictionary<Uri, PithosMonitor> Monitors
 111                 {
 112                         get { return _monitors; }
 113                 }
 114
 115
 116                 ///<summary>
 117                 /// The status service is used by Shell extensions to retrieve file status information
 118                 ///</summary>
 119                 //TODO: CODE SMELL! This is the shell! While hosting in the shell makes executing start/stop commands easier, it is still a smell
 120                 private ServiceHost _statusService;
 121
 122                 //Logging in the Pithos client is provided by log4net
 123         private static readonly log4net.ILog Log = log4net.LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 124
 125             private readonly PollAgent _pollAgent;
 126
 127
 128             private MiniStatusViewModel _miniStatus;
 129
 130             [Import]
 131         public MiniStatusViewModel MiniStatus
 132             {
 133                 get { return _miniStatus; }
 134                 set
 135                 {
 136                     _miniStatus = value;
 137                     _miniStatus.Shell = this;
 138                     _miniStatus.Deactivated += (sender, arg) =>
 139                                                    {
 140                                                        _statusVisible = false;
 141                                                    NotifyOfPropertyChange(()=>MiniStatusCaption);
 142                                                    };
 143                 }
 144             }
 145
 146             ///<summary>
 147                 /// The Shell depends on MEF to provide implementations for windowManager, events, the status checker service and the settings
 148                 ///</summary>
 149                 ///<remarks>
 150                 /// The PithosSettings class encapsulates the app's settings to abstract their storage mechanism (App settings, a database or registry)
 151                 ///</remarks>
 152                 [ImportingConstructor]
 153                 public ShellViewModel(IWindowManager windowManager, IEventAggregator events, IStatusChecker statusChecker, PithosSettings settings,PollAgent pollAgent)
 154                 {
 155                         try
 156                         {
 157
 158                                 _windowManager = windowManager;
 159                                 //CHECK: Caliburn doesn't need explicit command construction
 160                                 //OpenPithosFolderCommand = new PithosCommand(OpenPithosFolder);
 161                                 _statusChecker = statusChecker;
 162                                 //The event subst
 163                                 _events = events;
 164                                 _events.Subscribe(this);
 165
 166                             _pollAgent = pollAgent;
 167                                 Settings = settings;
 168
 169                                 Proxy.SetFromSettings(settings);
 170
 171                 StatusMessage = Settings.Accounts.Count==0
 172                     ? "No Accounts added\r\nPlease add an account"
 173                     : "Starting";
 174
 175                                 _accounts.CollectionChanged += (sender, e) =>
 176                                                                                                    {
 177                                                                                                            NotifyOfPropertyChange(() => OpenFolderCaption);
 178                                                                                                            NotifyOfPropertyChange(() => HasAccounts);
 179                                                                                                    };
 180
 181                 SetVersionMessage();
 182                         }
 183                         catch (Exception exc)
 184                         {
 185                                 Log.Error("Error while starting the ShellViewModel",exc);
 186                                 throw;
 187                         }
 188
 189                 }
 190
 191             private void SetVersionMessage()
 192             {
 193                 Assembly assembly = Assembly.GetExecutingAssembly();
 194                 var fileVersion = FileVersionInfo.GetVersionInfo(assembly.Location);
 195                 VersionMessage = String.Format("Pithos+ {0}", fileVersion.FileVersion);
 196             }
 197
 198         public void OnStatusAction()
 199         {
 200             if (Accounts.Count==0)
 201             {
 202                 ShowPreferences("AccountTab");
 203             }
 204         }
 205             protected override void OnActivate()
 206                 {
 207                         base.OnActivate();
 208
 209             InitializeSparkle();
 210
 211                 //Must delay opening the upgrade window
 212             //to avoid Windows Messages sent by the TaskbarIcon
 213             TaskEx.Delay(5000).ContinueWith(_=>
 214                 Execute.OnUIThread(()=> _sparkle.StartLoop(true,Settings.UpdateForceCheck,Settings.UpdateCheckInterval)));
 215
 216
 217                         StartMonitoring();
 218                 }
 219
 220
 221             private void OnCheckFinished(object sender, bool updaterequired)
 222             {
 223
 224             Log.InfoFormat("Upgrade check finished. Need Upgrade: {0}", updaterequired);
 225             if (_manualUpgradeCheck)
 226             {
 227                 _manualUpgradeCheck = false;
 228                 if (!updaterequired)
 229                     //Sparkle raises events on a background thread
 230                     Execute.OnUIThread(()=>
 231                         ShowBalloonFor(new Notification{Title="Pithos+ is up to date",Message="You have the latest Pithos+ version. No update is required"}));
 232             }
 233             }
 234
 235             private void OnUpgradeDetected(object sender, UpdateDetectedEventArgs e)
 236             {
 237                 Log.InfoFormat("Update detected {0}",e.LatestVersion);
 238             }
 239
 240         public void CheckForUpgrade()
 241         {
 242             ShowBalloonFor(new Notification{Title="Checking for upgrades",Message="Contacting the server to retrieve the latest Pithos+ version."});
 243             _sparkle.StopLoop();
 244             _sparkle.updateDetected -= OnUpgradeDetected;
 245             _sparkle.checkLoopFinished -= OnCheckFinished;
 246             _sparkle.Dispose();
 247
 248             _manualUpgradeCheck = true;
 249             InitializeSparkle();
 250             _sparkle.StartLoop(true,true,Settings.UpdateCheckInterval);
 251         }
 252
 253         private void InitializeSparkle()
 254         {
 255             _sparkle = new Sparkle(Settings.UpdateUrl);
 256             _sparkle.updateDetected += OnUpgradeDetected;
 257             _sparkle.checkLoopFinished += OnCheckFinished;
 258             _sparkle.ShowDiagnosticWindow = Settings.UpdateDiagnostics;
 259         }
 260
 261             private async void StartMonitoring()
 262                 {
 263                         try
 264                         {
 265                 if (Settings.IgnoreCertificateErrors)
 266                 {
 267                     ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, errors) => true;
 268                 }
 269
 270                                 var accounts = Settings.Accounts.Select(MonitorAccount);
 271                                 await TaskEx.WhenAll(accounts);
 272                                 _statusService = StatusService.Start();
 273
 274                         }
 275                         catch (AggregateException exc)
 276                         {
 277                                 exc.Handle(e =>
 278                                 {
 279                                         Log.Error("Error while starting monitoring", e);
 280                                         return true;
 281                                 });
 282                                 throw;
 283                         }
 284                 }
 285
 286                 protected override void OnDeactivate(bool close)
 287                 {
 288                         base.OnDeactivate(close);
 289                         if (close)
 290                         {
 291                                 StatusService.Stop(_statusService);
 292                                 _statusService = null;
 293                         }
 294                 }
 295
 296                 public Task MonitorAccount(AccountSettings account)
 297                 {
 298                         return Task.Factory.StartNew(() =>
 299                         {
 300                                 PithosMonitor monitor;
 301                                 var accountName = account.AccountName;
 302
 303                                 if (Monitors.TryGetValue(account.AccountKey, out monitor))
 304                                 {
 305                                         //If the account is active
 306                     if (account.IsActive)
 307                     {
 308                         //The Api Key may have changed throuth the Preferences dialog
 309                         monitor.ApiKey = account.ApiKey;
 310                                                 Debug.Assert(monitor.StatusNotification == this,"An existing monitor should already have a StatusNotification service object");
 311                         monitor.RootPath = account.RootPath;
 312                         //Start the monitor. It's OK to start an already started monitor,
 313                         //it will just ignore the call
 314                         StartMonitor(monitor).Wait();
 315                     }
 316                     else
 317                     {
 318                         //If the account is inactive
 319                         //Stop and remove the monitor
 320                         RemoveMonitor(account.ServerUrl,accountName);
 321                     }
 322                                         return;
 323                                 }
 324
 325
 326                                 //Create a new monitor/ Can't use MEF here, it would return a single instance for all monitors
 327                                 monitor = new PithosMonitor
 328                                                           {
 329                                                                   UserName = accountName,
 330                                                                   ApiKey = account.ApiKey,
 331                                                                   StatusNotification = this,
 332                                                                   RootPath = account.RootPath
 333                                                           };
 334                                 //PithosMonitor uses MEF so we need to resolve it
 335                                 IoC.BuildUp(monitor);
 336
 337                                 monitor.AuthenticationUrl = account.ServerUrl;
 338
 339                                 Monitors[account.AccountKey] = monitor;
 340
 341                                 if (account.IsActive)
 342                                 {
 343                                         //Don't start a monitor if it doesn't have an account and ApiKey
 344                                         if (String.IsNullOrWhiteSpace(monitor.UserName) ||
 345                                                 String.IsNullOrWhiteSpace(monitor.ApiKey))
 346                                                 return;
 347                                         StartMonitor(monitor);
 348                                 }
 349                         });
 350                 }
 351
 352
 353                 protected override void OnViewLoaded(object view)
 354                 {
 355                         UpdateStatus();
 356                         var window = (Window)view;
 357                         TaskEx.Delay(1000).ContinueWith(t => Execute.OnUIThread(window.Hide));
 358                         base.OnViewLoaded(view);
 359                 }
 360
 361
 362                 #region Status Properties
 363
 364                 private string _statusMessage;
 365                 public string StatusMessage
 366                 {
 367                         get { return _statusMessage; }
 368                         set
 369                         {
 370                                 _statusMessage = value;
 371                                 NotifyOfPropertyChange(() => StatusMessage);
 372                 NotifyOfPropertyChange(() => TooltipMessage);
 373                         }
 374                 }
 375
 376         public string VersionMessage { get; set; }
 377
 378             public string TooltipMessage
 379             {
 380                 get
 381                 {
 382                     return String.Format("{0}\r\n{1}",VersionMessage,StatusMessage);
 383                 }
 384             }
 385
 386             private readonly ObservableConcurrentCollection<AccountInfo> _accounts = new ObservableConcurrentCollection<AccountInfo>();
 387                 public ObservableConcurrentCollection<AccountInfo> Accounts
 388                 {
 389                         get { return _accounts; }
 390                 }
 391
 392                 public bool HasAccounts
 393                 {
 394                         get { return _accounts.Count > 0; }
 395                 }
 396
 397
 398                 public string OpenFolderCaption
 399                 {
 400                         get
 401                         {
 402                                 return (_accounts.Count == 0)
 403                                                 ? "No Accounts Defined"
 404                                                 : "Open Pithos Folder";
 405                         }
 406                 }
 407
 408                 private string _pauseSyncCaption="Pause Synching";
 409                 public string PauseSyncCaption
 410                 {
 411                         get { return _pauseSyncCaption; }
 412                         set
 413                         {
 414                                 _pauseSyncCaption = value;
 415                                 NotifyOfPropertyChange(() => PauseSyncCaption);
 416                         }
 417                 }
 418
 419                 private readonly ObservableConcurrentCollection<FileEntry> _recentFiles = new ObservableConcurrentCollection<FileEntry>();
 420                 public ObservableConcurrentCollection<FileEntry> RecentFiles
 421                 {
 422                         get { return _recentFiles; }
 423                 }
 424
 425
 426                 private string _statusIcon="../Images/Pithos.ico";
 427                 public string StatusIcon
 428                 {
 429                         get { return _statusIcon; }
 430                         set
 431                         {
 432                                 //TODO: Ensure all status icons use the Pithos logo
 433                                 _statusIcon = value;
 434                                 NotifyOfPropertyChange(() => StatusIcon);
 435                         }
 436                 }
 437
 438                 #endregion
 439
 440                 #region Commands
 441
 442         public void ShowPreferences()
 443         {
 444             ShowPreferences(null);
 445         }
 446
 447                 public void ShowPreferences(string currentTab)
 448                 {
 449                         //Settings.Reload();
 450                     var preferences = new PreferencesViewModel(_windowManager, _events, this, Settings,currentTab);
 451                     _windowManager.ShowDialog(preferences);
 452
 453                 }
 454
 455                 public void AboutPithos()
 456                 {
 457                         var about = IoC.Get<AboutViewModel>();
 458                     about.LatestVersion=_sparkle.LatestVersion;
 459                         _windowManager.ShowWindow(about);
 460                 }
 461
 462                 public void SendFeedback()
 463                 {
 464                         var feedBack =  IoC.Get<FeedbackViewModel>();
 465                         _windowManager.ShowWindow(feedBack);
 466                 }
 467
 468                 //public PithosCommand OpenPithosFolderCommand { get; private set; }
 469
 470                 public void OpenPithosFolder()
 471                 {
 472                         var account = Settings.Accounts.FirstOrDefault(acc => acc.IsActive);
 473                         if (account == null)
 474                                 return;
 475                         Process.Start(account.RootPath);
 476                 }
 477
 478                 public void OpenPithosFolder(AccountInfo account)
 479                 {
 480                         Process.Start(account.AccountPath);
 481                 }
 482
 483
 484
 485                 public void GoToSite()
 486                 {
 487                         var site = Properties.Settings.Default.ProductionServer;
 488                         Process.Start(site);
 489                 }
 490
 491
 492                 public void GoToSite(AccountInfo account)
 493                 {
 494                     var uri = account.SiteUri.Replace("http://","https://");
 495                     Process.Start(uri);
 496                 }
 497
 498             private bool _statusVisible;
 499
 500             public string MiniStatusCaption
 501             {
 502                 get
 503                 {
 504                     return  _statusVisible ? "Hide Status Window" : "Show Status Window";
 505                 }
 506             }
 507
 508             public void ShowMiniStatus()
 509         {
 510             if (!_statusVisible)
 511                 _windowManager.ShowWindow(MiniStatus);
 512             else
 513             {
 514                 if (MiniStatus.IsActive)
 515                     MiniStatus.TryClose();
 516             }
 517             _statusVisible=!_statusVisible;
 518
 519                 NotifyOfPropertyChange(()=>MiniStatusCaption);
 520         }
 521
 522             /// <summary>
 523         /// Open an explorer window to the target path's directory
 524         /// and select the file
 525         /// </summary>
 526         /// <param name="entry"></param>
 527         public void GoToFile(FileEntry entry)
 528         {
 529             var fullPath = entry.FullPath;
 530             if (!File.Exists(fullPath) && !Directory.Exists(fullPath))
 531                 return;
 532             Process.Start("explorer.exe","/select, " + fullPath);
 533         }
 534
 535         public void OpenLogPath()
 536         {
 537             var pithosDataPath = PithosSettings.PithosDataPath;
 538
 539             Process.Start(pithosDataPath);
 540         }
 541
 542         public void ShowFileProperties()
 543                 {
 544                         var account = Settings.Accounts.First(acc => acc.IsActive);
 545                         var dir = new DirectoryInfo(account.RootPath + @"\pithos");
 546                         var files=dir.GetFiles();
 547                         var r=new Random();
 548                         var idx=r.Next(0, files.Length);
 549                         ShowFileProperties(files[idx].FullName);
 550                 }
 551
 552                 public void ShowFileProperties(string filePath)
 553                 {
 554                         if (String.IsNullOrWhiteSpace(filePath))
 555                                 throw new ArgumentNullException("filePath");
 556                         if (!File.Exists(filePath) && !Directory.Exists(filePath))
 557                                 throw new ArgumentException(String.Format("Non existent file {0}",filePath),"filePath");
 558                         Contract.EndContractBlock();
 559
 560                         var pair=(from monitor in  Monitors
 561                                                            where filePath.StartsWith(monitor.Value.RootPath, StringComparison.InvariantCultureIgnoreCase)
 562                                                                    select monitor).FirstOrDefault();
 563                         var accountMonitor = pair.Value;
 564
 565                         if (accountMonitor == null)
 566                                 return;
 567
 568                         var infoTask=Task.Factory.StartNew(()=>accountMonitor.GetObjectInfo(filePath));
 569
 570
 571
 572                         var fileProperties = new FilePropertiesViewModel(this, infoTask,filePath);
 573                         _windowManager.ShowWindow(fileProperties);
 574                 }
 575
 576                 public void ShowContainerProperties()
 577                 {
 578                         var account = Settings.Accounts.First(acc => acc.IsActive);
 579                         var dir = new DirectoryInfo(account.RootPath);
 580                         var fullName = (from folder in dir.EnumerateDirectories()
 581                                                         where (folder.Attributes & FileAttributes.Hidden) == 0
 582                                                         select folder.FullName).First();
 583                         ShowContainerProperties(fullName);
 584                 }
 585
 586                 public void ShowContainerProperties(string filePath)
 587                 {
 588                         if (String.IsNullOrWhiteSpace(filePath))
 589                                 throw new ArgumentNullException("filePath");
 590                         if (!Directory.Exists(filePath))
 591                                 throw new ArgumentException(String.Format("Non existent file {0}",filePath),"filePath");
 592                         Contract.EndContractBlock();
 593
 594                         var pair=(from monitor in  Monitors
 595                                                            where filePath.StartsWith(monitor.Value.RootPath, StringComparison.InvariantCultureIgnoreCase)
 596                                                                    select monitor).FirstOrDefault();
 597                         var accountMonitor = pair.Value;
 598                         var info = accountMonitor.GetContainerInfo(filePath);
 599
 600
 601
 602                         var containerProperties = new ContainerPropertiesViewModel(this, info,filePath);
 603                         _windowManager.ShowWindow(containerProperties);
 604                 }
 605
 606                 public void SynchNow()
 607                 {
 608                         _pollAgent.SynchNow();
 609                 }
 610
 611                 public ObjectInfo RefreshObjectInfo(ObjectInfo currentInfo)
 612                 {
 613                         if (currentInfo==null)
 614                                 throw new ArgumentNullException("currentInfo");
 615                         Contract.EndContractBlock();
 616             var monitor = Monitors[currentInfo.AccountKey];
 617                         var newInfo=monitor.CloudClient.GetObjectInfo(currentInfo.Account, currentInfo.Container, currentInfo.Name);
 618                         return newInfo;
 619                 }
 620
 621                 public ContainerInfo RefreshContainerInfo(ContainerInfo container)
 622                 {
 623                         if (container == null)
 624                                 throw new ArgumentNullException("container");
 625                         Contract.EndContractBlock();
 626
 627                         var monitor = Monitors[container.AccountKey];
 628                         var newInfo = monitor.CloudClient.GetContainerInfo(container.Account, container.Name);
 629                         return newInfo;
 630                 }
 631
 632
 633                 public void ToggleSynching()
 634                 {
 635                         bool isPaused=false;
 636                         foreach (var pair in Monitors)
 637                         {
 638                                 var monitor = pair.Value;
 639                                 monitor.Pause = !monitor.Pause;
 640                                 isPaused = monitor.Pause;
 641                         }
 642
 643
 644                         PauseSyncCaption = isPaused ? "Resume syncing" : "Pause syncing";
 645                         var iconKey = isPaused? "TraySyncPaused" : "TrayInSynch";
 646                         StatusIcon = String.Format(@"../Images/{0}.ico", iconKey);
 647                 }
 648
 649         public void ExitPithos()
 650         {
 651             try
 652             {
 653
 654                 foreach (var monitor in Monitors.Select(pair => pair.Value))
 655                 {
 656                     monitor.Stop();
 657                 }
 658
 659                 var view = GetView() as Window;
 660                 if (view != null)
 661                     view.Close();
 662                 else
 663                     Application.Current.Shutdown();
 664             }
 665             catch (Exception exc)
 666             {
 667                 Log.Info("Exception while exiting", exc);
 668                 Application.Current.Shutdown();
 669             }
 670         }
 671
 672             #endregion
 673
 674
 675                 private readonly Dictionary<PithosStatus, StatusInfo> _iconNames = new List<StatusInfo>
 676                         {
 677                                 new StatusInfo(PithosStatus.InSynch, "All files up to date", "TrayInSynch"),
 678                                 new StatusInfo(PithosStatus.PollSyncing, "Polling Files", "TraySynching"),
 679                 new StatusInfo(PithosStatus.LocalSyncing, "Syncing Files", "TraySynching"),
 680                                 new StatusInfo(PithosStatus.SyncPaused, "Sync Paused", "TraySyncPaused")
 681                         }.ToDictionary(s => s.Status);
 682
 683                 readonly IWindowManager _windowManager;
 684
 685         //private int _syncCount=0;
 686
 687
 688         private PithosStatus _pithosStatus = PithosStatus.Disconnected;
 689
 690         public void SetPithosStatus(PithosStatus status)
 691         {
 692             if (_pithosStatus == PithosStatus.LocalSyncing && status == PithosStatus.PollComplete)
 693                 return;
 694             if (_pithosStatus == PithosStatus.PollSyncing && status == PithosStatus.LocalComplete)
 695                 return;
 696             if (status == PithosStatus.LocalComplete || status == PithosStatus.PollComplete)
 697                 _pithosStatus = PithosStatus.InSynch;
 698             else
 699                 _pithosStatus = status;
 700             UpdateStatus();
 701         }
 702
 703         public void SetPithosStatus(PithosStatus status,string message)
 704         {
 705             StatusMessage = message;
 706             SetPithosStatus(status);
 707         }
 708
 709
 710
 711                 ///<summary>
 712                 /// Updates the visual status indicators of the application depending on status changes, e.g. icon, stat
 713                 ///</summary>
 714                 public void UpdateStatus()
 715                 {
 716
 717                         if (_iconNames.ContainsKey(_pithosStatus))
 718                         {
 719                                 var info = _iconNames[_pithosStatus];
 720                                 StatusIcon = String.Format(@"../Images/{0}.ico", info.IconName);
 721                         }
 722
 723             if (_pithosStatus == PithosStatus.InSynch)
 724                 StatusMessage = "All files up to date";
 725                 }
 726
 727
 728
 729                 private Task StartMonitor(PithosMonitor monitor,int retries=0)
 730                 {
 731                         return Task.Factory.StartNew(() =>
 732                         {
 733                                 using (log4net.ThreadContext.Stacks["Monitor"].Push("Start"))
 734                                 {
 735                                         try
 736                                         {
 737                                                 Log.InfoFormat("Start Monitoring {0}", monitor.UserName);
 738
 739                                                 monitor.Start();
 740                                         }
 741                                         catch (WebException exc)
 742                                         {
 743                                                 if (AbandonRetry(monitor, retries))
 744                                                         return;
 745
 746                                                 HttpStatusCode statusCode =HttpStatusCode.OK;
 747                                                 var response = exc.Response as HttpWebResponse;
 748                                                 if(response!=null)
 749                                                         statusCode = response.StatusCode;
 750
 751                                                 switch (statusCode)
 752                                                 {
 753                                                         case HttpStatusCode.Unauthorized:
 754                                                                 var message = String.Format("API Key Expired for {0}. Starting Renewal",
 755                                                                                                                         monitor.UserName);
 756                                                                 Log.Error(message, exc);
 757                                                         var account = Settings.Accounts.Find(acc => acc.AccountName == monitor.UserName);
 758                                                         account.IsExpired = true;
 759                                 Notify(new ExpirationNotification(account));
 760                                                                 //TryAuthorize(monitor.UserName, retries).Wait();
 761                                                                 break;
 762                                                         case HttpStatusCode.ProxyAuthenticationRequired:
 763                                                                 TryAuthenticateProxy(monitor,retries);
 764                                                                 break;
 765                                                         default:
 766                                                                 TryLater(monitor, exc, retries);
 767                                                                 break;
 768                                                 }
 769                                         }
 770                                         catch (Exception exc)
 771                                         {
 772                                                 if (AbandonRetry(monitor, retries))
 773                                                         return;
 774
 775                                                 TryLater(monitor,exc,retries);
 776                                         }
 777                                 }
 778                         });
 779                 }
 780
 781                 private void TryAuthenticateProxy(PithosMonitor monitor,int retries)
 782                 {
 783                         Execute.OnUIThread(() =>
 784                                                                    {
 785                                                                            var proxyAccount = IoC.Get<ProxyAccountViewModel>();
 786                                                                                 proxyAccount.Settings = Settings;
 787                                                                            if (true != _windowManager.ShowDialog(proxyAccount))
 788                                                                                    return;
 789                                                                            StartMonitor(monitor, retries);
 790                                                                            NotifyOfPropertyChange(() => Accounts);
 791                                                                    });
 792                 }
 793
 794                 private bool AbandonRetry(PithosMonitor monitor, int retries)
 795                 {
 796                         if (retries > 1)
 797                         {
 798                                 var message = String.Format("Monitoring of account {0} has failed too many times. Will not retry",
 799                                                                                         monitor.UserName);
 800                                 _events.Publish(new Notification
 801                                                                         {Title = "Account monitoring failed", Message = message, Level = TraceLevel.Error});
 802                                 return true;
 803                         }
 804                         return false;
 805                 }
 806
 807
 808             private void TryLater(PithosMonitor monitor, Exception exc,int retries)
 809                 {
 810                         var message = String.Format("An exception occured. Can't start monitoring\nWill retry in 10 seconds");
 811                         Task.Factory.StartNewDelayed(10000, () => StartMonitor(monitor,retries+1));
 812                         _events.Publish(new Notification
 813                                                                 {Title = "Error", Message = message, Level = TraceLevel.Error});
 814                         Log.Error(message, exc);
 815                 }
 816
 817
 818                 public void NotifyChange(string status, TraceLevel level=TraceLevel.Info)
 819                 {
 820                         StatusMessage = status;
 821
 822                         _events.Publish(new Notification { Title = "Pithos+", Message = status, Level = level });
 823                 }
 824
 825                 public void NotifyChangedFile(string filePath)
 826                 {
 827             if (RecentFiles.Any(e => e.FullPath == filePath))
 828                 return;
 829
 830                         IProducerConsumerCollection<FileEntry> files=RecentFiles;
 831                         FileEntry popped;
 832                         while (files.Count > 5)
 833                                 files.TryTake(out popped);
 834             var entry = new FileEntry { FullPath = filePath };
 835                         files.TryAdd(entry);
 836                 }
 837
 838                 public void NotifyAccount(AccountInfo account)
 839                 {
 840                         if (account== null)
 841                                 return;
 842                         //TODO: What happens to an existing account whose Token has changed?
 843                         account.SiteUri= String.Format("{0}/ui/?token={1}&user={2}",
 844                                 account.SiteUri, Uri.EscapeDataString(account.Token),
 845                                 Uri.EscapeDataString(account.UserName));
 846
 847                         if (!Accounts.Any(item => item.UserName == account.UserName && item.SiteUri == account.SiteUri))
 848                                 Accounts.TryAdd(account);
 849
 850                 }
 851
 852                 public void NotifyConflicts(IEnumerable<FileSystemInfo> conflictFiles, string message)
 853                 {
 854                         if (conflictFiles == null)
 855                                 return;
 856                     //Convert to list to avoid multiple iterations
 857             var files = conflictFiles.ToList();
 858                         if (files.Count==0)
 859                                 return;
 860
 861                         UpdateStatus();
 862                         //TODO: Create a more specific message. For now, just show a warning
 863                         NotifyForFiles(files,message,TraceLevel.Warning);
 864
 865                 }
 866
 867                 public void NotifyForFiles(IEnumerable<FileSystemInfo> files, string message,TraceLevel level=TraceLevel.Info)
 868                 {
 869                         if (files == null)
 870                                 return;
 871                         if (!files.Any())
 872                                 return;
 873
 874                         StatusMessage = message;
 875
 876                         _events.Publish(new Notification { Title = "Pithos+", Message = message, Level = level});
 877                 }
 878
 879                 public void Notify(Notification notification)
 880                 {
 881                         _events.Publish(notification);
 882                 }
 883
 884
 885                 public void RemoveMonitor(string serverUrl,string accountName)
 886                 {
 887                         if (String.IsNullOrWhiteSpace(accountName))
 888                                 return;
 889
 890                         var accountInfo=_accounts.FirstOrDefault(account => account.UserName == accountName && account.StorageUri.ToString().StartsWith(serverUrl));
 891             if (accountInfo != null)
 892             {
 893                 _accounts.TryRemove(accountInfo);
 894                 _pollAgent.RemoveAccount(accountInfo);
 895             }
 896
 897             var accountKey = new Uri(new Uri(serverUrl),accountName);
 898                     PithosMonitor monitor;
 899                         if (Monitors.TryRemove(accountKey, out monitor))
 900                         {
 901                                 monitor.Stop();
 902                 //TODO: Also remove any pending actions for this account
 903                 //from the network queue
 904                         }
 905                 }
 906
 907                 public void RefreshOverlays()
 908                 {
 909                         foreach (var pair in Monitors)
 910                         {
 911                                 var monitor = pair.Value;
 912
 913                                 var path = monitor.RootPath;
 914
 915                                 if (String.IsNullOrWhiteSpace(path))
 916                                         continue;
 917
 918                                 if (!Directory.Exists(path) && !File.Exists(path))
 919                                         continue;
 920
 921                                 IntPtr pathPointer = Marshal.StringToCoTaskMemAuto(path);
 922
 923                                 try
 924                                 {
 925                                         NativeMethods.SHChangeNotify(HChangeNotifyEventID.SHCNE_UPDATEITEM,
 926                                                                                                  HChangeNotifyFlags.SHCNF_PATHW | HChangeNotifyFlags.SHCNF_FLUSHNOWAIT,
 927                                                                                                  pathPointer, IntPtr.Zero);
 928                                 }
 929                                 finally
 930                                 {
 931                                         Marshal.FreeHGlobal(pathPointer);
 932                                 }
 933                         }
 934                 }
 935
 936                 #region Event Handlers
 937
 938                 public void Handle(SelectiveSynchChanges message)
 939                 {
 940                         PithosMonitor monitor;
 941                         if (Monitors.TryGetValue(message.Account.AccountKey, out monitor))
 942                         {
 943                                 monitor.SetSelectivePaths(message.Uris,message.Added,message.Removed);
 944
 945                         }
 946
 947                 }
 948
 949
 950                 private bool _pollStarted;
 951             private Sparkle _sparkle;
 952             private bool _manualUpgradeCheck;
 953
 954             //SMELL: Doing so much work for notifications in the shell is wrong
 955                 //The notifications should be moved to their own view/viewmodel pair
 956                 //and different templates should be used for different message types
 957                 //This will also allow the addition of extra functionality, eg. actions
 958                 //
 959                 public void Handle(Notification notification)
 960                 {
 961                         UpdateStatus();
 962
 963                         if (!Settings.ShowDesktopNotifications)
 964                                 return;
 965
 966                         if (notification is PollNotification)
 967                         {
 968                                 _pollStarted = true;
 969                                 return;
 970                         }
 971                         if (notification is CloudNotification)
 972                         {
 973                                 if (!_pollStarted)
 974                                         return;
 975                                 _pollStarted= false;
 976                                 notification.Title = "Pithos+";
 977                                 notification.Message = "Start Synchronisation";
 978                         }
 979
 980                     var deleteNotification = notification as CloudDeleteNotification;
 981             if (deleteNotification != null)
 982             {
 983                 StatusMessage = String.Format("Deleted {0}", deleteNotification.Data.Name);
 984                 return;
 985             }
 986
 987                     var progress = notification as ProgressNotification;
 988
 989
 990             if (progress != null)
 991                     {
 992                         StatusMessage = String.Format("{0} {1:p2} of {2} - {3}",
 993                                               progress.Action,
 994                                                       progress.Block/(double)progress.TotalBlocks,
 995                                                       progress.FileSize.ToByteSize(),
 996                                                       progress.FileName);
 997                         return;
 998                     }
 999
1000                     var info = notification as StatusNotification;
1001             if (info != null)
1002             {
1003                 StatusMessage = info.Title;
1004                 return;
1005             }
1006                         if (String.IsNullOrWhiteSpace(notification.Message) && String.IsNullOrWhiteSpace(notification.Title))
1007                                 return;
1008
1009             if (notification.Level <= TraceLevel.Warning)
1010                             ShowBalloonFor(notification);
1011                 }
1012
1013             private void ShowBalloonFor(Notification notification)
1014             {
1015             Contract.Requires(notification!=null);
1016
1017             if (!Settings.ShowDesktopNotifications)
1018                 return;
1019
1020             BalloonIcon icon;
1021                 switch (notification.Level)
1022                 {
1023                 case TraceLevel.Verbose:
1024                         return;
1025                     case TraceLevel.Info:
1026                         icon = BalloonIcon.Info;
1027                         break;
1028                 case TraceLevel.Error:
1029                     icon = BalloonIcon.Error;
1030                     break;
1031                 case TraceLevel.Warning:
1032                         icon = BalloonIcon.Warning;
1033                         break;
1034                     default:
1035                         return;
1036                 }
1037
1038                 var tv = (ShellView) GetView();
1039                 System.Action clickAction = null;
1040                 if (notification is ExpirationNotification)
1041                 {
1042                     clickAction = () => ShowPreferences("AccountTab");
1043                 }
1044                 var balloon = new PithosBalloon
1045                                   {
1046                                       Title = notification.Title,
1047                                       Message = notification.Message,
1048                                       Icon = icon,
1049                                       ClickAction = clickAction
1050                                   };
1051                 tv.TaskbarView.ShowCustomBalloon(balloon, PopupAnimation.Fade, 4000);
1052             }
1053
1054             #endregion
1055
1056                 public void Handle(ShowFilePropertiesEvent message)
1057                 {
1058                         if (message == null)
1059                                 throw new ArgumentNullException("message");
1060                         if (String.IsNullOrWhiteSpace(message.FileName) )
1061                                 throw new ArgumentException("message");
1062                         Contract.EndContractBlock();
1063
1064                         var fileName = message.FileName;
1065                         //TODO: Display file properties for non-container folders
1066                         if (File.Exists(fileName))
1067                                 //Retrieve the full name with exact casing. Pithos names are case sensitive
1068                                 ShowFileProperties(FileInfoExtensions.GetProperFilePathCapitalization(fileName));
1069                         else if (Directory.Exists(fileName))
1070                                 //Retrieve the full name with exact casing. Pithos names are case sensitive
1071                         {
1072                                 var path = FileInfoExtensions.GetProperDirectoryCapitalization(fileName);
1073                                 if (IsContainer(path))
1074                                         ShowContainerProperties(path);
1075                                 else
1076                                         ShowFileProperties(path);
1077                         }
1078                 }
1079
1080                 private bool IsContainer(string path)
1081                 {
1082                         var matchingFolders = from account in _accounts
1083                                                                   from rootFolder in Directory.GetDirectories(account.AccountPath)
1084                                                                   where rootFolder.Equals(path, StringComparison.InvariantCultureIgnoreCase)
1085                                                                   select rootFolder;
1086                         return matchingFolders.Any();
1087                 }
1088
1089                 public FileStatus GetFileStatus(string localFileName)
1090                 {
1091                         if (String.IsNullOrWhiteSpace(localFileName))
1092                                 throw new ArgumentNullException("localFileName");
1093                         Contract.EndContractBlock();
1094
1095                         var statusKeeper = IoC.Get<IStatusKeeper>();
1096                         var status=statusKeeper.GetFileStatus(localFileName);
1097                         return status;
1098                 }
1099
1100             public void RemoveAccountFromDatabase(AccountSettings account)
1101             {
1102             var statusKeeper = IoC.Get<IStatusKeeper>();
1103             statusKeeper.ClearFolderStatus(account.RootPath);
1104             }
1105         }
1106 }