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))]
  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<string, PithosMonitor> _monitors = new ConcurrentDictionary<string, 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<string, 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 Pitsos+ 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             Log.Error("Test Error message");
 244             _sparkle.StopLoop();
 245             _sparkle.updateDetected -= OnUpgradeDetected;
 246             _sparkle.checkLoopFinished -= OnCheckFinished;
 247             _sparkle.Dispose();
 248
 249             _manualUpgradeCheck = true;
 250             InitializeSparkle();
 251             _sparkle.StartLoop(true,true,Settings.UpdateCheckInterval);
 252         }
 253
 254         private void InitializeSparkle()
 255         {
 256             _sparkle = new Sparkle(Settings.UpdateUrl);
 257             _sparkle.updateDetected += OnUpgradeDetected;
 258             _sparkle.checkLoopFinished += OnCheckFinished;
 259             _sparkle.ShowDiagnosticWindow = Settings.UpdateDiagnostics;
 260         }
 261
 262             private async void StartMonitoring()
 263                 {
 264                         try
 265                         {
 266                                 var accounts = Settings.Accounts.Select(MonitorAccount);
 267                                 await TaskEx.WhenAll(accounts);
 268                                 _statusService = StatusService.Start();
 269
 270 /*
 271                                 foreach (var account in Settings.Accounts)
 272                                 {
 273                                         await MonitorAccount(account);
 274                                 }
 275 */
 276
 277                         }
 278                         catch (AggregateException exc)
 279                         {
 280                                 exc.Handle(e =>
 281                                 {
 282                                         Log.Error("Error while starting monitoring", e);
 283                                         return true;
 284                                 });
 285                                 throw;
 286                         }
 287                 }
 288
 289                 protected override void OnDeactivate(bool close)
 290                 {
 291                         base.OnDeactivate(close);
 292                         if (close)
 293                         {
 294                                 StatusService.Stop(_statusService);
 295                                 _statusService = null;
 296                         }
 297                 }
 298
 299                 public Task MonitorAccount(AccountSettings account)
 300                 {
 301                         return Task.Factory.StartNew(() =>
 302                         {
 303                                 PithosMonitor monitor;
 304                                 var accountName = account.AccountName;
 305
 306                                 if (_monitors.TryGetValue(accountName, out monitor))
 307                                 {
 308                                         //If the account is active
 309                     if (account.IsActive)
 310                     {
 311                         //The Api Key may have changed throuth the Preferences dialog
 312                         monitor.ApiKey = account.ApiKey;
 313                                                 Debug.Assert(monitor.StatusNotification == this,"An existing monitor should already have a StatusNotification service object");
 314                         monitor.RootPath = account.RootPath;
 315                         //Start the monitor. It's OK to start an already started monitor,
 316                         //it will just ignore the call
 317                         StartMonitor(monitor).Wait();
 318                     }
 319                     else
 320                     {
 321                         //If the account is inactive
 322                         //Stop and remove the monitor
 323                         RemoveMonitor(accountName);
 324                     }
 325                                         return;
 326                                 }
 327
 328
 329                                 //Create a new monitor/ Can't use MEF here, it would return a single instance for all monitors
 330                                 monitor = new PithosMonitor
 331                                                           {
 332                                                                   UserName = accountName,
 333                                                                   ApiKey = account.ApiKey,
 334                                                                   StatusNotification = this,
 335                                                                   RootPath = account.RootPath
 336                                                           };
 337                                 //PithosMonitor uses MEF so we need to resolve it
 338                                 IoC.BuildUp(monitor);
 339
 340                                 monitor.AuthenticationUrl = account.ServerUrl;
 341
 342                                 _monitors[accountName] = monitor;
 343
 344                                 if (account.IsActive)
 345                                 {
 346                                         //Don't start a monitor if it doesn't have an account and ApiKey
 347                                         if (String.IsNullOrWhiteSpace(monitor.UserName) ||
 348                                                 String.IsNullOrWhiteSpace(monitor.ApiKey))
 349                                                 return;
 350                                         StartMonitor(monitor);
 351                                 }
 352                         });
 353                 }
 354
 355
 356                 protected override void OnViewLoaded(object view)
 357                 {
 358                         UpdateStatus();
 359                         var window = (Window)view;
 360                         TaskEx.Delay(1000).ContinueWith(t => Execute.OnUIThread(window.Hide));
 361                         base.OnViewLoaded(view);
 362                 }
 363
 364
 365                 #region Status Properties
 366
 367                 private string _statusMessage;
 368                 public string StatusMessage
 369                 {
 370                         get { return _statusMessage; }
 371                         set
 372                         {
 373                                 _statusMessage = value;
 374                                 NotifyOfPropertyChange(() => StatusMessage);
 375                 NotifyOfPropertyChange(() => TooltipMessage);
 376                         }
 377                 }
 378
 379         public string VersionMessage { get; set; }
 380
 381             private string _tooltipMessage;
 382             public string TooltipMessage
 383             {
 384                 get
 385                 {
 386                     return String.Format("{0}\r\n{1}",VersionMessage,StatusMessage);
 387                 }
 388             }
 389
 390             private readonly ObservableConcurrentCollection<AccountInfo> _accounts = new ObservableConcurrentCollection<AccountInfo>();
 391                 public ObservableConcurrentCollection<AccountInfo> Accounts
 392                 {
 393                         get { return _accounts; }
 394                 }
 395
 396                 public bool HasAccounts
 397                 {
 398                         get { return _accounts.Count > 0; }
 399                 }
 400
 401
 402                 public string OpenFolderCaption
 403                 {
 404                         get
 405                         {
 406                                 return (_accounts.Count == 0)
 407                                                 ? "No Accounts Defined"
 408                                                 : "Open Pithos Folder";
 409                         }
 410                 }
 411
 412                 private string _pauseSyncCaption="Pause Synching";
 413                 public string PauseSyncCaption
 414                 {
 415                         get { return _pauseSyncCaption; }
 416                         set
 417                         {
 418                                 _pauseSyncCaption = value;
 419                                 NotifyOfPropertyChange(() => PauseSyncCaption);
 420                         }
 421                 }
 422
 423                 private readonly ObservableConcurrentCollection<FileEntry> _recentFiles = new ObservableConcurrentCollection<FileEntry>();
 424                 public ObservableConcurrentCollection<FileEntry> RecentFiles
 425                 {
 426                         get { return _recentFiles; }
 427                 }
 428
 429
 430                 private string _statusIcon="../Images/Pithos.ico";
 431                 public string StatusIcon
 432                 {
 433                         get { return _statusIcon; }
 434                         set
 435                         {
 436                                 //TODO: Ensure all status icons use the Pithos logo
 437                                 _statusIcon = value;
 438                                 NotifyOfPropertyChange(() => StatusIcon);
 439                         }
 440                 }
 441
 442                 #endregion
 443
 444                 #region Commands
 445
 446         public void ShowPreferences()
 447         {
 448             ShowPreferences(null);
 449         }
 450
 451                 public void ShowPreferences(string currentTab)
 452                 {
 453                         //Settings.Reload();
 454                     var preferences = new PreferencesViewModel(_windowManager, _events, this, Settings,currentTab);
 455                     _windowManager.ShowDialog(preferences);
 456
 457                 }
 458
 459                 public void AboutPithos()
 460                 {
 461                         var about = IoC.Get<AboutViewModel>();
 462                     about.LatestVersion=_sparkle.LatestVersion;
 463                         _windowManager.ShowWindow(about);
 464                 }
 465
 466                 public void SendFeedback()
 467                 {
 468                         var feedBack =  IoC.Get<FeedbackViewModel>();
 469                         _windowManager.ShowWindow(feedBack);
 470                 }
 471
 472                 //public PithosCommand OpenPithosFolderCommand { get; private set; }
 473
 474                 public void OpenPithosFolder()
 475                 {
 476                         var account = Settings.Accounts.FirstOrDefault(acc => acc.IsActive);
 477                         if (account == null)
 478                                 return;
 479                         Process.Start(account.RootPath);
 480                 }
 481
 482                 public void OpenPithosFolder(AccountInfo account)
 483                 {
 484                         Process.Start(account.AccountPath);
 485                 }
 486
 487
 488 /*
 489                 public void GoToSite()
 490                 {
 491                         var site = Properties.Settings.Default.PithosSite;
 492                         Process.Start(site);
 493                 }
 494 */
 495
 496                 public void GoToSite(AccountInfo account)
 497                 {
 498                     var uri = account.SiteUri.Replace("http://","https://");
 499                     Process.Start(uri);
 500                 }
 501
 502             private bool _statusVisible;
 503
 504             public string MiniStatusCaption
 505             {
 506                 get
 507                 {
 508                     return  _statusVisible ? "Hide Status Window" : "Show Status Window";
 509                 }
 510             }
 511
 512             public void ShowMiniStatus()
 513         {
 514             if (!_statusVisible)
 515                 _windowManager.ShowWindow(MiniStatus);
 516             else
 517             {
 518                 if (MiniStatus.IsActive)
 519                     MiniStatus.TryClose();
 520             }
 521             _statusVisible=!_statusVisible;
 522
 523                 NotifyOfPropertyChange(()=>MiniStatusCaption);
 524         }
 525
 526             /// <summary>
 527         /// Open an explorer window to the target path's directory
 528         /// and select the file
 529         /// </summary>
 530         /// <param name="entry"></param>
 531         public void GoToFile(FileEntry entry)
 532         {
 533             var fullPath = entry.FullPath;
 534             if (!File.Exists(fullPath) && !Directory.Exists(fullPath))
 535                 return;
 536             Process.Start("explorer.exe","/select, " + fullPath);
 537         }
 538
 539         public void OpenLogPath()
 540         {
 541             var pithosDataPath = PithosSettings.PithosDataPath;
 542
 543             Process.Start(pithosDataPath);
 544         }
 545
 546         public void ShowFileProperties()
 547                 {
 548                         var account = Settings.Accounts.First(acc => acc.IsActive);
 549                         var dir = new DirectoryInfo(account.RootPath + @"\pithos");
 550                         var files=dir.GetFiles();
 551                         var r=new Random();
 552                         var idx=r.Next(0, files.Length);
 553                         ShowFileProperties(files[idx].FullName);
 554                 }
 555
 556                 public void ShowFileProperties(string filePath)
 557                 {
 558                         if (String.IsNullOrWhiteSpace(filePath))
 559                                 throw new ArgumentNullException("filePath");
 560                         if (!File.Exists(filePath) && !Directory.Exists(filePath))
 561                                 throw new ArgumentException(String.Format("Non existent file {0}",filePath),"filePath");
 562                         Contract.EndContractBlock();
 563
 564                         var pair=(from monitor in  Monitors
 565                                                            where filePath.StartsWith(monitor.Value.RootPath, StringComparison.InvariantCultureIgnoreCase)
 566                                                                    select monitor).FirstOrDefault();
 567                         var accountMonitor = pair.Value;
 568
 569                         if (accountMonitor == null)
 570                                 return;
 571
 572                         var infoTask=Task.Factory.StartNew(()=>accountMonitor.GetObjectInfo(filePath));
 573
 574
 575
 576                         var fileProperties = new FilePropertiesViewModel(this, infoTask,filePath);
 577                         _windowManager.ShowWindow(fileProperties);
 578                 }
 579
 580                 public void ShowContainerProperties()
 581                 {
 582                         var account = Settings.Accounts.First(acc => acc.IsActive);
 583                         var dir = new DirectoryInfo(account.RootPath);
 584                         var fullName = (from folder in dir.EnumerateDirectories()
 585                                                         where (folder.Attributes & FileAttributes.Hidden) == 0
 586                                                         select folder.FullName).First();
 587                         ShowContainerProperties(fullName);
 588                 }
 589
 590                 public void ShowContainerProperties(string filePath)
 591                 {
 592                         if (String.IsNullOrWhiteSpace(filePath))
 593                                 throw new ArgumentNullException("filePath");
 594                         if (!Directory.Exists(filePath))
 595                                 throw new ArgumentException(String.Format("Non existent file {0}",filePath),"filePath");
 596                         Contract.EndContractBlock();
 597
 598                         var pair=(from monitor in  Monitors
 599                                                            where filePath.StartsWith(monitor.Value.RootPath, StringComparison.InvariantCultureIgnoreCase)
 600                                                                    select monitor).FirstOrDefault();
 601                         var accountMonitor = pair.Value;
 602                         var info = accountMonitor.GetContainerInfo(filePath);
 603
 604
 605
 606                         var containerProperties = new ContainerPropertiesViewModel(this, info,filePath);
 607                         _windowManager.ShowWindow(containerProperties);
 608                 }
 609
 610                 public void SynchNow()
 611                 {
 612                         _pollAgent.SynchNow();
 613                 }
 614
 615                 public ObjectInfo RefreshObjectInfo(ObjectInfo currentInfo)
 616                 {
 617                         if (currentInfo==null)
 618                                 throw new ArgumentNullException("currentInfo");
 619                         Contract.EndContractBlock();
 620
 621                         var monitor = Monitors[currentInfo.Account];
 622                         var newInfo=monitor.CloudClient.GetObjectInfo(currentInfo.Account, currentInfo.Container, currentInfo.Name);
 623                         return newInfo;
 624                 }
 625
 626                 public ContainerInfo RefreshContainerInfo(ContainerInfo container)
 627                 {
 628                         if (container == null)
 629                                 throw new ArgumentNullException("container");
 630                         Contract.EndContractBlock();
 631
 632                         var monitor = Monitors[container.Account];
 633                         var newInfo = monitor.CloudClient.GetContainerInfo(container.Account, container.Name);
 634                         return newInfo;
 635                 }
 636
 637
 638                 public void ToggleSynching()
 639                 {
 640                         bool isPaused=false;
 641                         foreach (var pair in Monitors)
 642                         {
 643                                 var monitor = pair.Value;
 644                                 monitor.Pause = !monitor.Pause;
 645                                 isPaused = monitor.Pause;
 646                         }
 647
 648
 649                         PauseSyncCaption = isPaused ? "Resume syncing" : "Pause syncing";
 650                         var iconKey = isPaused? "TraySyncPaused" : "TrayInSynch";
 651                         StatusIcon = String.Format(@"../Images/{0}.ico", iconKey);
 652                 }
 653
 654                 public void ExitPithos()
 655                 {
 656                         foreach (var pair in Monitors)
 657                         {
 658                                 var monitor = pair.Value;
 659                                 monitor.Stop();
 660                         }
 661
 662                         ((Window)GetView()).Close();
 663                 }
 664                 #endregion
 665
 666
 667                 private readonly Dictionary<PithosStatus, StatusInfo> _iconNames = new List<StatusInfo>
 668                         {
 669                                 new StatusInfo(PithosStatus.InSynch, "All files up to date", "TrayInSynch"),
 670                                 new StatusInfo(PithosStatus.PollSyncing, "Polling Files", "TraySynching"),
 671                 new StatusInfo(PithosStatus.LocalSyncing, "Syncing Files", "TraySynching"),
 672                                 new StatusInfo(PithosStatus.SyncPaused, "Sync Paused", "TraySyncPaused")
 673                         }.ToDictionary(s => s.Status);
 674
 675                 readonly IWindowManager _windowManager;
 676
 677         //private int _syncCount=0;
 678
 679
 680         private PithosStatus _pithosStatus = PithosStatus.Disconnected;
 681
 682         public void SetPithosStatus(PithosStatus status)
 683         {
 684             if (_pithosStatus == PithosStatus.LocalSyncing && status == PithosStatus.PollComplete)
 685                 return;
 686             if (_pithosStatus == PithosStatus.PollSyncing && status == PithosStatus.LocalComplete)
 687                 return;
 688             if (status == PithosStatus.LocalComplete || status == PithosStatus.PollComplete)
 689                 _pithosStatus = PithosStatus.InSynch;
 690             else
 691                 _pithosStatus = status;
 692             UpdateStatus();
 693         }
 694
 695         public void SetPithosStatus(PithosStatus status,string message)
 696         {
 697             StatusMessage = message;
 698             SetPithosStatus(status);
 699         }
 700
 701
 702
 703                 ///<summary>
 704                 /// Updates the visual status indicators of the application depending on status changes, e.g. icon, stat
 705                 ///</summary>
 706                 public void UpdateStatus()
 707                 {
 708
 709                         if (_iconNames.ContainsKey(_pithosStatus))
 710                         {
 711                                 var info = _iconNames[_pithosStatus];
 712                                 StatusIcon = String.Format(@"../Images/{0}.ico", info.IconName);
 713                         }
 714
 715             if (_pithosStatus == PithosStatus.InSynch)
 716                 StatusMessage = "All files up to date";
 717                 }
 718
 719
 720
 721                 private Task StartMonitor(PithosMonitor monitor,int retries=0)
 722                 {
 723                         return Task.Factory.StartNew(() =>
 724                         {
 725                                 using (log4net.ThreadContext.Stacks["Monitor"].Push("Start"))
 726                                 {
 727                                         try
 728                                         {
 729                                                 Log.InfoFormat("Start Monitoring {0}", monitor.UserName);
 730
 731                                                 monitor.Start();
 732                                         }
 733                                         catch (WebException exc)
 734                                         {
 735                                                 if (AbandonRetry(monitor, retries))
 736                                                         return;
 737
 738                                                 HttpStatusCode statusCode =HttpStatusCode.OK;
 739                                                 var response = exc.Response as HttpWebResponse;
 740                                                 if(response!=null)
 741                                                         statusCode = response.StatusCode;
 742
 743                                                 switch (statusCode)
 744                                                 {
 745                                                         case HttpStatusCode.Unauthorized:
 746                                                                 var message = String.Format("API Key Expired for {0}. Starting Renewal",
 747                                                                                                                         monitor.UserName);
 748                                                                 Log.Error(message, exc);
 749                                                         var account = Settings.Accounts.Find(acc => acc.AccountName == monitor.UserName);
 750                                                         account.IsExpired = true;
 751                                 Notify(new ExpirationNotification(account));
 752                                                                 //TryAuthorize(monitor.UserName, retries).Wait();
 753                                                                 break;
 754                                                         case HttpStatusCode.ProxyAuthenticationRequired:
 755                                                                 TryAuthenticateProxy(monitor,retries);
 756                                                                 break;
 757                                                         default:
 758                                                                 TryLater(monitor, exc, retries);
 759                                                                 break;
 760                                                 }
 761                                         }
 762                                         catch (Exception exc)
 763                                         {
 764                                                 if (AbandonRetry(monitor, retries))
 765                                                         return;
 766
 767                                                 TryLater(monitor,exc,retries);
 768                                         }
 769                                 }
 770                         });
 771                 }
 772
 773                 private void TryAuthenticateProxy(PithosMonitor monitor,int retries)
 774                 {
 775                         Execute.OnUIThread(() =>
 776                                                                    {
 777                                                                            var proxyAccount = IoC.Get<ProxyAccountViewModel>();
 778                                                                                 proxyAccount.Settings = Settings;
 779                                                                            if (true != _windowManager.ShowDialog(proxyAccount))
 780                                                                                    return;
 781                                                                            StartMonitor(monitor, retries);
 782                                                                            NotifyOfPropertyChange(() => Accounts);
 783                                                                    });
 784                 }
 785
 786                 private bool AbandonRetry(PithosMonitor monitor, int retries)
 787                 {
 788                         if (retries > 1)
 789                         {
 790                                 var message = String.Format("Monitoring of account {0} has failed too many times. Will not retry",
 791                                                                                         monitor.UserName);
 792                                 _events.Publish(new Notification
 793                                                                         {Title = "Account monitoring failed", Message = message, Level = TraceLevel.Error});
 794                                 return true;
 795                         }
 796                         return false;
 797                 }
 798
 799
 800             private void TryLater(PithosMonitor monitor, Exception exc,int retries)
 801                 {
 802                         var message = String.Format("An exception occured. Can't start monitoring\nWill retry in 10 seconds");
 803                         Task.Factory.StartNewDelayed(10000, () => StartMonitor(monitor,retries+1));
 804                         _events.Publish(new Notification
 805                                                                 {Title = "Error", Message = message, Level = TraceLevel.Error});
 806                         Log.Error(message, exc);
 807                 }
 808
 809
 810                 public void NotifyChange(string status, TraceLevel level=TraceLevel.Info)
 811                 {
 812                         StatusMessage = status;
 813
 814                         _events.Publish(new Notification { Title = "Pithos+", Message = status, Level = level });
 815                 }
 816
 817                 public void NotifyChangedFile(string filePath)
 818                 {
 819             if (RecentFiles.Any(e => e.FullPath == filePath))
 820                 return;
 821
 822                         IProducerConsumerCollection<FileEntry> files=RecentFiles;
 823                         FileEntry popped;
 824                         while (files.Count > 5)
 825                                 files.TryTake(out popped);
 826             var entry = new FileEntry { FullPath = filePath };
 827                         files.TryAdd(entry);
 828                 }
 829
 830                 public void NotifyAccount(AccountInfo account)
 831                 {
 832                         if (account== null)
 833                                 return;
 834                         //TODO: What happens to an existing account whose Token has changed?
 835                         account.SiteUri= String.Format("{0}/ui/?token={1}&user={2}",
 836                                 account.SiteUri, Uri.EscapeDataString(account.Token),
 837                                 Uri.EscapeDataString(account.UserName));
 838
 839                         if (Accounts.All(item => item.UserName != account.UserName))
 840                                 Accounts.TryAdd(account);
 841
 842                 }
 843
 844                 public void NotifyConflicts(IEnumerable<FileSystemInfo> conflictFiles, string message)
 845                 {
 846                         if (conflictFiles == null)
 847                                 return;
 848                     //Convert to list to avoid multiple iterations
 849             var files = conflictFiles.ToList();
 850                         if (files.Count==0)
 851                                 return;
 852
 853                         UpdateStatus();
 854                         //TODO: Create a more specific message. For now, just show a warning
 855                         NotifyForFiles(files,message,TraceLevel.Warning);
 856
 857                 }
 858
 859                 public void NotifyForFiles(IEnumerable<FileSystemInfo> files, string message,TraceLevel level=TraceLevel.Info)
 860                 {
 861                         if (files == null)
 862                                 return;
 863                         if (!files.Any())
 864                                 return;
 865
 866                         StatusMessage = message;
 867
 868                         _events.Publish(new Notification { Title = "Pithos+", Message = message, Level = level});
 869                 }
 870
 871                 public void Notify(Notification notification)
 872                 {
 873                         _events.Publish(notification);
 874                 }
 875
 876
 877                 public void RemoveMonitor(string accountName)
 878                 {
 879                         if (String.IsNullOrWhiteSpace(accountName))
 880                                 return;
 881
 882                         var accountInfo=_accounts.FirstOrDefault(account => account.UserName == accountName);
 883             if (accountInfo != null)
 884             {
 885                 _accounts.TryRemove(accountInfo);
 886                 _pollAgent.RemoveAccount(accountInfo);
 887             }
 888
 889                     PithosMonitor monitor;
 890                         if (Monitors.TryRemove(accountName, out monitor))
 891                         {
 892                                 monitor.Stop();
 893                 //TODO: Also remove any pending actions for this account
 894                 //from the network queue
 895                         }
 896                 }
 897
 898                 public void RefreshOverlays()
 899                 {
 900                         foreach (var pair in Monitors)
 901                         {
 902                                 var monitor = pair.Value;
 903
 904                                 var path = monitor.RootPath;
 905
 906                                 if (String.IsNullOrWhiteSpace(path))
 907                                         continue;
 908
 909                                 if (!Directory.Exists(path) && !File.Exists(path))
 910                                         continue;
 911
 912                                 IntPtr pathPointer = Marshal.StringToCoTaskMemAuto(path);
 913
 914                                 try
 915                                 {
 916                                         NativeMethods.SHChangeNotify(HChangeNotifyEventID.SHCNE_UPDATEITEM,
 917                                                                                                  HChangeNotifyFlags.SHCNF_PATHW | HChangeNotifyFlags.SHCNF_FLUSHNOWAIT,
 918                                                                                                  pathPointer, IntPtr.Zero);
 919                                 }
 920                                 finally
 921                                 {
 922                                         Marshal.FreeHGlobal(pathPointer);
 923                                 }
 924                         }
 925                 }
 926
 927                 #region Event Handlers
 928
 929                 public void Handle(SelectiveSynchChanges message)
 930                 {
 931                         var accountName = message.Account.AccountName;
 932                         PithosMonitor monitor;
 933                         if (_monitors.TryGetValue(accountName, out monitor))
 934                         {
 935                                 monitor.SetSelectivePaths(message.Uris,message.Added,message.Removed);
 936
 937                         }
 938
 939                 }
 940
 941
 942                 private bool _pollStarted;
 943             private Sparkle _sparkle;
 944             private bool _manualUpgradeCheck;
 945
 946             //SMELL: Doing so much work for notifications in the shell is wrong
 947                 //The notifications should be moved to their own view/viewmodel pair
 948                 //and different templates should be used for different message types
 949                 //This will also allow the addition of extra functionality, eg. actions
 950                 //
 951                 public void Handle(Notification notification)
 952                 {
 953                         UpdateStatus();
 954
 955                         if (!Settings.ShowDesktopNotifications)
 956                                 return;
 957
 958                         if (notification is PollNotification)
 959                         {
 960                                 _pollStarted = true;
 961                                 return;
 962                         }
 963                         if (notification is CloudNotification)
 964                         {
 965                                 if (!_pollStarted)
 966                                         return;
 967                                 _pollStarted= false;
 968                                 notification.Title = "Pithos+";
 969                                 notification.Message = "Start Synchronisation";
 970                         }
 971
 972                     var deleteNotification = notification as CloudDeleteNotification;
 973             if (deleteNotification != null)
 974             {
 975                 StatusMessage = String.Format("Deleted {0}", deleteNotification.Data.Name);
 976                 return;
 977             }
 978
 979                     var progress = notification as ProgressNotification;
 980
 981
 982             if (progress != null)
 983                     {
 984                         StatusMessage = String.Format("{0} {1:p2} of {2} - {3}",
 985                                               progress.Action,
 986                                                       progress.Block/(double)progress.TotalBlocks,
 987                                                       progress.FileSize.ToByteSize(),
 988                                                       progress.FileName);
 989                         return;
 990                     }
 991
 992                     var info = notification as StatusNotification;
 993             if (info != null)
 994             {
 995                 StatusMessage = info.Title;
 996                 return;
 997             }
 998                         if (String.IsNullOrWhiteSpace(notification.Message) && String.IsNullOrWhiteSpace(notification.Title))
 999                                 return;
1000
1001             if (notification.Level <= TraceLevel.Warning)
1002                             ShowBalloonFor(notification);
1003                 }
1004
1005             private void ShowBalloonFor(Notification notification)
1006             {
1007             Contract.Requires(notification!=null);
1008
1009             if (!Settings.ShowDesktopNotifications)
1010                 return;
1011
1012             BalloonIcon icon;
1013                 switch (notification.Level)
1014                 {
1015                 case TraceLevel.Verbose:
1016                         return;
1017                     case TraceLevel.Info:
1018                         icon = BalloonIcon.Info;
1019                         break;
1020                 case TraceLevel.Error:
1021                     icon = BalloonIcon.Error;
1022                     break;
1023                 case TraceLevel.Warning:
1024                         icon = BalloonIcon.Warning;
1025                         break;
1026                     default:
1027                         return;
1028                 }
1029
1030                 var tv = (ShellView) GetView();
1031                 System.Action clickAction = null;
1032                 if (notification is ExpirationNotification)
1033                 {
1034                     clickAction = () => ShowPreferences("AccountTab");
1035                 }
1036                 var balloon = new PithosBalloon
1037                                   {
1038                                       Title = notification.Title,
1039                                       Message = notification.Message,
1040                                       Icon = icon,
1041                                       ClickAction = clickAction
1042                                   };
1043                 tv.TaskbarView.ShowCustomBalloon(balloon, PopupAnimation.Fade, 4000);
1044             }
1045
1046             #endregion
1047
1048                 public void Handle(ShowFilePropertiesEvent message)
1049                 {
1050                         if (message == null)
1051                                 throw new ArgumentNullException("message");
1052                         if (String.IsNullOrWhiteSpace(message.FileName) )
1053                                 throw new ArgumentException("message");
1054                         Contract.EndContractBlock();
1055
1056                         var fileName = message.FileName;
1057                         //TODO: Display file properties for non-container folders
1058                         if (File.Exists(fileName))
1059                                 //Retrieve the full name with exact casing. Pithos names are case sensitive
1060                                 ShowFileProperties(FileInfoExtensions.GetProperFilePathCapitalization(fileName));
1061                         else if (Directory.Exists(fileName))
1062                                 //Retrieve the full name with exact casing. Pithos names are case sensitive
1063                         {
1064                                 var path = FileInfoExtensions.GetProperDirectoryCapitalization(fileName);
1065                                 if (IsContainer(path))
1066                                         ShowContainerProperties(path);
1067                                 else
1068                                         ShowFileProperties(path);
1069                         }
1070                 }
1071
1072                 private bool IsContainer(string path)
1073                 {
1074                         var matchingFolders = from account in _accounts
1075                                                                   from rootFolder in Directory.GetDirectories(account.AccountPath)
1076                                                                   where rootFolder.Equals(path, StringComparison.InvariantCultureIgnoreCase)
1077                                                                   select rootFolder;
1078                         return matchingFolders.Any();
1079                 }
1080
1081                 public FileStatus GetFileStatus(string localFileName)
1082                 {
1083                         if (String.IsNullOrWhiteSpace(localFileName))
1084                                 throw new ArgumentNullException("localFileName");
1085                         Contract.EndContractBlock();
1086
1087                         var statusKeeper = IoC.Get<IStatusKeeper>();
1088                         var status=statusKeeper.GetFileStatus(localFileName);
1089                         return status;
1090                 }
1091
1092             public void RemoveAccountFromDatabase(AccountSettings account)
1093             {
1094             var statusKeeper = IoC.Get<IStatusKeeper>();
1095             statusKeeper.ClearFolderStatus(account.RootPath);
1096             }
1097         }
1098 }