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. Please add an account"
 173                     : "Starting";
 174
 175                                 _accounts.CollectionChanged += (sender, e) =>
 176                                                                                                    {
 177                                                                                                            NotifyOfPropertyChange(() => OpenFolderCaption);
 178                                                                                                            NotifyOfPropertyChange(() => HasAccounts);
 179                                                                                                    };
 180
 181                 Assembly assembly = Assembly.GetExecutingAssembly();
 182                 var fileVersion = FileVersionInfo.GetVersionInfo(assembly.Location);
 183                 VersionMessage = String.Format("Pithos+ {0}", fileVersion.FileVersion);
 184
 185                         }
 186                         catch (Exception exc)
 187                         {
 188                                 Log.Error("Error while starting the ShellViewModel",exc);
 189                                 throw;
 190                         }
 191
 192                 }
 193
 194
 195                 protected override void OnActivate()
 196                 {
 197                         base.OnActivate();
 198
 199             _sparkle = new Sparkle(Settings.UpdateUrl);
 200             _sparkle.updateDetected += OnUpgradeDetected;
 201             _sparkle.ShowDiagnosticWindow = Settings.UpdateDiagnostics;
 202
 203             //Must delay opening the upgrade window
 204             //to avoid Windows Messages sent by the TaskbarIcon
 205             TaskEx.Delay(5000).ContinueWith(_=>
 206                 Execute.OnUIThread(()=> _sparkle.StartLoop(true,Settings.UpdateForceCheck,Settings.UpdateCheckInterval)));
 207
 208
 209                         StartMonitoring();
 210                 }
 211
 212             private void OnUpgradeDetected(object sender, UpdateDetectedEventArgs e)
 213             {
 214                 Log.InfoFormat("Update detected {0}",e.LatestVersion);
 215             }
 216
 217         public void CheckForUpgrade()
 218         {
 219             Log.Error("Test Error message");
 220             _sparkle.StopLoop();
 221             _sparkle.Dispose();
 222             _sparkle=new Sparkle(Settings.UpdateUrl);
 223             _sparkle.StartLoop(true,true,Settings.UpdateCheckInterval);
 224         }
 225
 226             private async void StartMonitoring()
 227                 {
 228                         try
 229                         {
 230                                 var accounts = Settings.Accounts.Select(MonitorAccount);
 231                                 await TaskEx.WhenAll(accounts);
 232                                 _statusService = StatusService.Start();
 233
 234 /*
 235                                 foreach (var account in Settings.Accounts)
 236                                 {
 237                                         await MonitorAccount(account);
 238                                 }
 239 */
 240
 241                         }
 242                         catch (AggregateException exc)
 243                         {
 244                                 exc.Handle(e =>
 245                                 {
 246                                         Log.Error("Error while starting monitoring", e);
 247                                         return true;
 248                                 });
 249                                 throw;
 250                         }
 251                 }
 252
 253                 protected override void OnDeactivate(bool close)
 254                 {
 255                         base.OnDeactivate(close);
 256                         if (close)
 257                         {
 258                                 StatusService.Stop(_statusService);
 259                                 _statusService = null;
 260                         }
 261                 }
 262
 263                 public Task MonitorAccount(AccountSettings account)
 264                 {
 265                         return Task.Factory.StartNew(() =>
 266                         {
 267                                 PithosMonitor monitor;
 268                                 var accountName = account.AccountName;
 269
 270                                 if (_monitors.TryGetValue(accountName, out monitor))
 271                                 {
 272                                         //If the account is active
 273                     if (account.IsActive)
 274                     {
 275                         //The Api Key may have changed throuth the Preferences dialog
 276                         monitor.ApiKey = account.ApiKey;
 277                                                 Debug.Assert(monitor.StatusNotification == this,"An existing monitor should already have a StatusNotification service object");
 278                         monitor.RootPath = account.RootPath;
 279                         //Start the monitor. It's OK to start an already started monitor,
 280                         //it will just ignore the call
 281                         StartMonitor(monitor).Wait();
 282                     }
 283                     else
 284                     {
 285                         //If the account is inactive
 286                         //Stop and remove the monitor
 287                         RemoveMonitor(accountName);
 288                     }
 289                                         return;
 290                                 }
 291
 292
 293                                 //Create a new monitor/ Can't use MEF here, it would return a single instance for all monitors
 294                                 monitor = new PithosMonitor
 295                                                           {
 296                                                                   UserName = accountName,
 297                                                                   ApiKey = account.ApiKey,
 298                                                                   StatusNotification = this,
 299                                                                   RootPath = account.RootPath
 300                                                           };
 301                                 //PithosMonitor uses MEF so we need to resolve it
 302                                 IoC.BuildUp(monitor);
 303
 304                                 monitor.AuthenticationUrl = account.ServerUrl;
 305
 306                                 _monitors[accountName] = monitor;
 307
 308                                 if (account.IsActive)
 309                                 {
 310                                         //Don't start a monitor if it doesn't have an account and ApiKey
 311                                         if (String.IsNullOrWhiteSpace(monitor.UserName) ||
 312                                                 String.IsNullOrWhiteSpace(monitor.ApiKey))
 313                                                 return;
 314                                         StartMonitor(monitor);
 315                                 }
 316                         });
 317                 }
 318
 319
 320                 protected override void OnViewLoaded(object view)
 321                 {
 322                         UpdateStatus();
 323                         var window = (Window)view;
 324                         TaskEx.Delay(1000).ContinueWith(t => Execute.OnUIThread(window.Hide));
 325                         base.OnViewLoaded(view);
 326                 }
 327
 328
 329                 #region Status Properties
 330
 331                 private string _statusMessage;
 332                 public string StatusMessage
 333                 {
 334                         get { return _statusMessage; }
 335                         set
 336                         {
 337                                 _statusMessage = value;
 338                                 NotifyOfPropertyChange(() => StatusMessage);
 339                 NotifyOfPropertyChange(() => TooltipMessage);
 340                         }
 341                 }
 342
 343         public string VersionMessage { get; set; }
 344
 345             private string _tooltipMessage;
 346             public string TooltipMessage
 347             {
 348                 get
 349                 {
 350                     return String.Format("{0}\r\n{1}",VersionMessage,StatusMessage);
 351                 }
 352             }
 353
 354             private readonly ObservableConcurrentCollection<AccountInfo> _accounts = new ObservableConcurrentCollection<AccountInfo>();
 355                 public ObservableConcurrentCollection<AccountInfo> Accounts
 356                 {
 357                         get { return _accounts; }
 358                 }
 359
 360                 public bool HasAccounts
 361                 {
 362                         get { return _accounts.Count > 0; }
 363                 }
 364
 365
 366                 public string OpenFolderCaption
 367                 {
 368                         get
 369                         {
 370                                 return (_accounts.Count == 0)
 371                                                 ? "No Accounts Defined"
 372                                                 : "Open Pithos Folder";
 373                         }
 374                 }
 375
 376                 private string _pauseSyncCaption="Pause Synching";
 377                 public string PauseSyncCaption
 378                 {
 379                         get { return _pauseSyncCaption; }
 380                         set
 381                         {
 382                                 _pauseSyncCaption = value;
 383                                 NotifyOfPropertyChange(() => PauseSyncCaption);
 384                         }
 385                 }
 386
 387                 private readonly ObservableConcurrentCollection<FileEntry> _recentFiles = new ObservableConcurrentCollection<FileEntry>();
 388                 public ObservableConcurrentCollection<FileEntry> RecentFiles
 389                 {
 390                         get { return _recentFiles; }
 391                 }
 392
 393
 394                 private string _statusIcon="../Images/Pithos.ico";
 395                 public string StatusIcon
 396                 {
 397                         get { return _statusIcon; }
 398                         set
 399                         {
 400                                 //TODO: Ensure all status icons use the Pithos logo
 401                                 _statusIcon = value;
 402                                 NotifyOfPropertyChange(() => StatusIcon);
 403                         }
 404                 }
 405
 406                 #endregion
 407
 408                 #region Commands
 409
 410         public void ShowPreferences()
 411         {
 412             ShowPreferences(null);
 413         }
 414
 415                 public void ShowPreferences(string currentTab)
 416                 {
 417                         //Settings.Reload();
 418                     var preferences = new PreferencesViewModel(_windowManager, _events, this, Settings,currentTab);
 419                     _windowManager.ShowDialog(preferences);
 420
 421                 }
 422
 423                 public void AboutPithos()
 424                 {
 425                         var about = IoC.Get<AboutViewModel>();
 426                     about.LatestVersion=_sparkle.LatestVersion;
 427                         _windowManager.ShowWindow(about);
 428                 }
 429
 430                 public void SendFeedback()
 431                 {
 432                         var feedBack =  IoC.Get<FeedbackViewModel>();
 433                         _windowManager.ShowWindow(feedBack);
 434                 }
 435
 436                 //public PithosCommand OpenPithosFolderCommand { get; private set; }
 437
 438                 public void OpenPithosFolder()
 439                 {
 440                         var account = Settings.Accounts.FirstOrDefault(acc => acc.IsActive);
 441                         if (account == null)
 442                                 return;
 443                         Process.Start(account.RootPath);
 444                 }
 445
 446                 public void OpenPithosFolder(AccountInfo account)
 447                 {
 448                         Process.Start(account.AccountPath);
 449                 }
 450
 451
 452 /*
 453                 public void GoToSite()
 454                 {
 455                         var site = Properties.Settings.Default.PithosSite;
 456                         Process.Start(site);
 457                 }
 458 */
 459
 460                 public void GoToSite(AccountInfo account)
 461                 {
 462                     var uri = account.SiteUri.Replace("http://","https://");
 463                     Process.Start(uri);
 464                 }
 465
 466             private bool _statusVisible;
 467
 468             public string MiniStatusCaption
 469             {
 470                 get
 471                 {
 472                     return  _statusVisible ? "Hide Status Window" : "Show Status Window";
 473                 }
 474             }
 475
 476             public void ShowMiniStatus()
 477         {
 478             if (!_statusVisible)
 479                 _windowManager.ShowWindow(MiniStatus);
 480             else
 481             {
 482                 if (MiniStatus.IsActive)
 483                     MiniStatus.TryClose();
 484             }
 485             _statusVisible=!_statusVisible;
 486
 487                 NotifyOfPropertyChange(()=>MiniStatusCaption);
 488         }
 489
 490             /// <summary>
 491         /// Open an explorer window to the target path's directory
 492         /// and select the file
 493         /// </summary>
 494         /// <param name="entry"></param>
 495         public void GoToFile(FileEntry entry)
 496         {
 497             var fullPath = entry.FullPath;
 498             if (!File.Exists(fullPath) && !Directory.Exists(fullPath))
 499                 return;
 500             Process.Start("explorer.exe","/select, " + fullPath);
 501         }
 502
 503         public void OpenLogPath()
 504         {
 505             var pithosDataPath = PithosSettings.PithosDataPath;
 506
 507             Process.Start(pithosDataPath);
 508         }
 509
 510         public void ShowFileProperties()
 511                 {
 512                         var account = Settings.Accounts.First(acc => acc.IsActive);
 513                         var dir = new DirectoryInfo(account.RootPath + @"\pithos");
 514                         var files=dir.GetFiles();
 515                         var r=new Random();
 516                         var idx=r.Next(0, files.Length);
 517                         ShowFileProperties(files[idx].FullName);
 518                 }
 519
 520                 public void ShowFileProperties(string filePath)
 521                 {
 522                         if (String.IsNullOrWhiteSpace(filePath))
 523                                 throw new ArgumentNullException("filePath");
 524                         if (!File.Exists(filePath) && !Directory.Exists(filePath))
 525                                 throw new ArgumentException(String.Format("Non existent file {0}",filePath),"filePath");
 526                         Contract.EndContractBlock();
 527
 528                         var pair=(from monitor in  Monitors
 529                                                            where filePath.StartsWith(monitor.Value.RootPath, StringComparison.InvariantCultureIgnoreCase)
 530                                                                    select monitor).FirstOrDefault();
 531                         var accountMonitor = pair.Value;
 532
 533                         if (accountMonitor == null)
 534                                 return;
 535
 536                         var infoTask=Task.Factory.StartNew(()=>accountMonitor.GetObjectInfo(filePath));
 537
 538
 539
 540                         var fileProperties = new FilePropertiesViewModel(this, infoTask,filePath);
 541                         _windowManager.ShowWindow(fileProperties);
 542                 }
 543
 544                 public void ShowContainerProperties()
 545                 {
 546                         var account = Settings.Accounts.First(acc => acc.IsActive);
 547                         var dir = new DirectoryInfo(account.RootPath);
 548                         var fullName = (from folder in dir.EnumerateDirectories()
 549                                                         where (folder.Attributes & FileAttributes.Hidden) == 0
 550                                                         select folder.FullName).First();
 551                         ShowContainerProperties(fullName);
 552                 }
 553
 554                 public void ShowContainerProperties(string filePath)
 555                 {
 556                         if (String.IsNullOrWhiteSpace(filePath))
 557                                 throw new ArgumentNullException("filePath");
 558                         if (!Directory.Exists(filePath))
 559                                 throw new ArgumentException(String.Format("Non existent file {0}",filePath),"filePath");
 560                         Contract.EndContractBlock();
 561
 562                         var pair=(from monitor in  Monitors
 563                                                            where filePath.StartsWith(monitor.Value.RootPath, StringComparison.InvariantCultureIgnoreCase)
 564                                                                    select monitor).FirstOrDefault();
 565                         var accountMonitor = pair.Value;
 566                         var info = accountMonitor.GetContainerInfo(filePath);
 567
 568
 569
 570                         var containerProperties = new ContainerPropertiesViewModel(this, info,filePath);
 571                         _windowManager.ShowWindow(containerProperties);
 572                 }
 573
 574                 public void SynchNow()
 575                 {
 576                         _pollAgent.SynchNow();
 577                 }
 578
 579                 public ObjectInfo RefreshObjectInfo(ObjectInfo currentInfo)
 580                 {
 581                         if (currentInfo==null)
 582                                 throw new ArgumentNullException("currentInfo");
 583                         Contract.EndContractBlock();
 584
 585                         var monitor = Monitors[currentInfo.Account];
 586                         var newInfo=monitor.CloudClient.GetObjectInfo(currentInfo.Account, currentInfo.Container, currentInfo.Name);
 587                         return newInfo;
 588                 }
 589
 590                 public ContainerInfo RefreshContainerInfo(ContainerInfo container)
 591                 {
 592                         if (container == null)
 593                                 throw new ArgumentNullException("container");
 594                         Contract.EndContractBlock();
 595
 596                         var monitor = Monitors[container.Account];
 597                         var newInfo = monitor.CloudClient.GetContainerInfo(container.Account, container.Name);
 598                         return newInfo;
 599                 }
 600
 601
 602                 public void ToggleSynching()
 603                 {
 604                         bool isPaused=false;
 605                         foreach (var pair in Monitors)
 606                         {
 607                                 var monitor = pair.Value;
 608                                 monitor.Pause = !monitor.Pause;
 609                                 isPaused = monitor.Pause;
 610                         }
 611
 612
 613                         PauseSyncCaption = isPaused ? "Resume syncing" : "Pause syncing";
 614                         var iconKey = isPaused? "TraySyncPaused" : "TrayInSynch";
 615                         StatusIcon = String.Format(@"../Images/{0}.ico", iconKey);
 616                 }
 617
 618                 public void ExitPithos()
 619                 {
 620                         foreach (var pair in Monitors)
 621                         {
 622                                 var monitor = pair.Value;
 623                                 monitor.Stop();
 624                         }
 625
 626                         ((Window)GetView()).Close();
 627                 }
 628                 #endregion
 629
 630
 631                 private readonly Dictionary<PithosStatus, StatusInfo> _iconNames = new List<StatusInfo>
 632                         {
 633                                 new StatusInfo(PithosStatus.InSynch, "All files up to date", "TrayInSynch"),
 634                                 new StatusInfo(PithosStatus.PollSyncing, "Polling Files", "TraySynching"),
 635                 new StatusInfo(PithosStatus.LocalSyncing, "Syncing Files", "TraySynching"),
 636                                 new StatusInfo(PithosStatus.SyncPaused, "Sync Paused", "TraySyncPaused")
 637                         }.ToDictionary(s => s.Status);
 638
 639                 readonly IWindowManager _windowManager;
 640
 641         //private int _syncCount=0;
 642
 643
 644         private PithosStatus _pithosStatus = PithosStatus.Disconnected;
 645
 646         public void SetPithosStatus(PithosStatus status)
 647         {
 648             if (_pithosStatus == PithosStatus.LocalSyncing && status == PithosStatus.PollComplete)
 649                 return;
 650             if (_pithosStatus == PithosStatus.PollSyncing && status == PithosStatus.LocalComplete)
 651                 return;
 652             if (status == PithosStatus.LocalComplete || status == PithosStatus.PollComplete)
 653                 _pithosStatus = PithosStatus.InSynch;
 654             else
 655                 _pithosStatus = status;
 656             UpdateStatus();
 657         }
 658
 659         public void SetPithosStatus(PithosStatus status,string message)
 660         {
 661             StatusMessage = message;
 662             SetPithosStatus(status);
 663         }
 664
 665
 666
 667                 ///<summary>
 668                 /// Updates the visual status indicators of the application depending on status changes, e.g. icon, stat
 669                 ///</summary>
 670                 public void UpdateStatus()
 671                 {
 672
 673                         if (_iconNames.ContainsKey(_pithosStatus))
 674                         {
 675                                 var info = _iconNames[_pithosStatus];
 676                                 StatusIcon = String.Format(@"../Images/{0}.ico", info.IconName);
 677                         }
 678
 679             if (_pithosStatus == PithosStatus.InSynch)
 680                 StatusMessage = "All files up to date";
 681                 }
 682
 683
 684
 685                 private Task StartMonitor(PithosMonitor monitor,int retries=0)
 686                 {
 687                         return Task.Factory.StartNew(() =>
 688                         {
 689                                 using (log4net.ThreadContext.Stacks["Monitor"].Push("Start"))
 690                                 {
 691                                         try
 692                                         {
 693                                                 Log.InfoFormat("Start Monitoring {0}", monitor.UserName);
 694
 695                                                 monitor.Start();
 696                                         }
 697                                         catch (WebException exc)
 698                                         {
 699                                                 if (AbandonRetry(monitor, retries))
 700                                                         return;
 701
 702                                                 HttpStatusCode statusCode =HttpStatusCode.OK;
 703                                                 var response = exc.Response as HttpWebResponse;
 704                                                 if(response!=null)
 705                                                         statusCode = response.StatusCode;
 706
 707                                                 switch (statusCode)
 708                                                 {
 709                                                         case HttpStatusCode.Unauthorized:
 710                                                                 var message = String.Format("API Key Expired for {0}. Starting Renewal",
 711                                                                                                                         monitor.UserName);
 712                                                                 Log.Error(message, exc);
 713                                                         var account = Settings.Accounts.Find(acc => acc.AccountName == monitor.UserName);
 714                                                         account.IsExpired = true;
 715                                 Notify(new ExpirationNotification(account));
 716                                                                 //TryAuthorize(monitor.UserName, retries).Wait();
 717                                                                 break;
 718                                                         case HttpStatusCode.ProxyAuthenticationRequired:
 719                                                                 TryAuthenticateProxy(monitor,retries);
 720                                                                 break;
 721                                                         default:
 722                                                                 TryLater(monitor, exc, retries);
 723                                                                 break;
 724                                                 }
 725                                         }
 726                                         catch (Exception exc)
 727                                         {
 728                                                 if (AbandonRetry(monitor, retries))
 729                                                         return;
 730
 731                                                 TryLater(monitor,exc,retries);
 732                                         }
 733                                 }
 734                         });
 735                 }
 736
 737                 private void TryAuthenticateProxy(PithosMonitor monitor,int retries)
 738                 {
 739                         Execute.OnUIThread(() =>
 740                                                                    {
 741                                                                            var proxyAccount = IoC.Get<ProxyAccountViewModel>();
 742                                                                                 proxyAccount.Settings = Settings;
 743                                                                            if (true != _windowManager.ShowDialog(proxyAccount))
 744                                                                                    return;
 745                                                                            StartMonitor(monitor, retries);
 746                                                                            NotifyOfPropertyChange(() => Accounts);
 747                                                                    });
 748                 }
 749
 750                 private bool AbandonRetry(PithosMonitor monitor, int retries)
 751                 {
 752                         if (retries > 1)
 753                         {
 754                                 var message = String.Format("Monitoring of account {0} has failed too many times. Will not retry",
 755                                                                                         monitor.UserName);
 756                                 _events.Publish(new Notification
 757                                                                         {Title = "Account monitoring failed", Message = message, Level = TraceLevel.Error});
 758                                 return true;
 759                         }
 760                         return false;
 761                 }
 762
 763
 764             private void TryLater(PithosMonitor monitor, Exception exc,int retries)
 765                 {
 766                         var message = String.Format("An exception occured. Can't start monitoring\nWill retry in 10 seconds");
 767                         Task.Factory.StartNewDelayed(10000, () => StartMonitor(monitor,retries+1));
 768                         _events.Publish(new Notification
 769                                                                 {Title = "Error", Message = message, Level = TraceLevel.Error});
 770                         Log.Error(message, exc);
 771                 }
 772
 773
 774                 public void NotifyChange(string status, TraceLevel level=TraceLevel.Info)
 775                 {
 776                         StatusMessage = status;
 777
 778                         _events.Publish(new Notification { Title = "Pithos+", Message = status, Level = level });
 779                 }
 780
 781                 public void NotifyChangedFile(string filePath)
 782                 {
 783             if (RecentFiles.Any(e => e.FullPath == filePath))
 784                 return;
 785
 786                         IProducerConsumerCollection<FileEntry> files=RecentFiles;
 787                         FileEntry popped;
 788                         while (files.Count > 5)
 789                                 files.TryTake(out popped);
 790             var entry = new FileEntry { FullPath = filePath };
 791                         files.TryAdd(entry);
 792                 }
 793
 794                 public void NotifyAccount(AccountInfo account)
 795                 {
 796                         if (account== null)
 797                                 return;
 798                         //TODO: What happens to an existing account whose Token has changed?
 799                         account.SiteUri= String.Format("{0}/ui/?token={1}&user={2}",
 800                                 account.SiteUri, Uri.EscapeDataString(account.Token),
 801                                 Uri.EscapeDataString(account.UserName));
 802
 803                         if (Accounts.All(item => item.UserName != account.UserName))
 804                                 Accounts.TryAdd(account);
 805
 806                 }
 807
 808                 public void NotifyConflicts(IEnumerable<FileSystemInfo> conflictFiles, string message)
 809                 {
 810                         if (conflictFiles == null)
 811                                 return;
 812                     //Convert to list to avoid multiple iterations
 813             var files = conflictFiles.ToList();
 814                         if (files.Count==0)
 815                                 return;
 816
 817                         UpdateStatus();
 818                         //TODO: Create a more specific message. For now, just show a warning
 819                         NotifyForFiles(files,message,TraceLevel.Warning);
 820
 821                 }
 822
 823                 public void NotifyForFiles(IEnumerable<FileSystemInfo> files, string message,TraceLevel level=TraceLevel.Info)
 824                 {
 825                         if (files == null)
 826                                 return;
 827                         if (!files.Any())
 828                                 return;
 829
 830                         StatusMessage = message;
 831
 832                         _events.Publish(new Notification { Title = "Pithos+", Message = message, Level = level});
 833                 }
 834
 835                 public void Notify(Notification notification)
 836                 {
 837                         _events.Publish(notification);
 838                 }
 839
 840
 841                 public void RemoveMonitor(string accountName)
 842                 {
 843                         if (String.IsNullOrWhiteSpace(accountName))
 844                                 return;
 845
 846                         var accountInfo=_accounts.FirstOrDefault(account => account.UserName == accountName);
 847             if (accountInfo != null)
 848             {
 849                 _accounts.TryRemove(accountInfo);
 850                 _pollAgent.RemoveAccount(accountInfo);
 851             }
 852
 853                     PithosMonitor monitor;
 854                         if (Monitors.TryRemove(accountName, out monitor))
 855                         {
 856                                 monitor.Stop();
 857                 //TODO: Also remove any pending actions for this account
 858                 //from the network queue
 859                         }
 860                 }
 861
 862                 public void RefreshOverlays()
 863                 {
 864                         foreach (var pair in Monitors)
 865                         {
 866                                 var monitor = pair.Value;
 867
 868                                 var path = monitor.RootPath;
 869
 870                                 if (String.IsNullOrWhiteSpace(path))
 871                                         continue;
 872
 873                                 if (!Directory.Exists(path) && !File.Exists(path))
 874                                         continue;
 875
 876                                 IntPtr pathPointer = Marshal.StringToCoTaskMemAuto(path);
 877
 878                                 try
 879                                 {
 880                                         NativeMethods.SHChangeNotify(HChangeNotifyEventID.SHCNE_UPDATEITEM,
 881                                                                                                  HChangeNotifyFlags.SHCNF_PATHW | HChangeNotifyFlags.SHCNF_FLUSHNOWAIT,
 882                                                                                                  pathPointer, IntPtr.Zero);
 883                                 }
 884                                 finally
 885                                 {
 886                                         Marshal.FreeHGlobal(pathPointer);
 887                                 }
 888                         }
 889                 }
 890
 891                 #region Event Handlers
 892
 893                 public void Handle(SelectiveSynchChanges message)
 894                 {
 895                         var accountName = message.Account.AccountName;
 896                         PithosMonitor monitor;
 897                         if (_monitors.TryGetValue(accountName, out monitor))
 898                         {
 899                                 monitor.SetSelectivePaths(message.Uris,message.Added,message.Removed);
 900
 901                         }
 902
 903                 }
 904
 905
 906                 private bool _pollStarted;
 907             private Sparkle _sparkle;
 908
 909             //SMELL: Doing so much work for notifications in the shell is wrong
 910                 //The notifications should be moved to their own view/viewmodel pair
 911                 //and different templates should be used for different message types
 912                 //This will also allow the addition of extra functionality, eg. actions
 913                 //
 914                 public void Handle(Notification notification)
 915                 {
 916                         UpdateStatus();
 917
 918                         if (!Settings.ShowDesktopNotifications)
 919                                 return;
 920
 921                         if (notification is PollNotification)
 922                         {
 923                                 _pollStarted = true;
 924                                 return;
 925                         }
 926                         if (notification is CloudNotification)
 927                         {
 928                                 if (!_pollStarted)
 929                                         return;
 930                                 _pollStarted= false;
 931                                 notification.Title = "Pithos+";
 932                                 notification.Message = "Start Synchronisation";
 933                         }
 934
 935                     var deleteNotification = notification as CloudDeleteNotification;
 936             if (deleteNotification != null)
 937             {
 938                 StatusMessage = String.Format("Deleted {0}", deleteNotification.Data.Name);
 939                 return;
 940             }
 941
 942                     var progress = notification as ProgressNotification;
 943
 944
 945             if (progress != null)
 946                     {
 947                         StatusMessage = String.Format("{0} {1:p2} of {2} - {3}",
 948                                               progress.Action,
 949                                                       progress.Block/(double)progress.TotalBlocks,
 950                                                       progress.FileSize.ToByteSize(),
 951                                                       progress.FileName);
 952                         return;
 953                     }
 954
 955                     var info = notification as StatusNotification;
 956             if (info != null)
 957             {
 958                 StatusMessage = info.Title;
 959                 return;
 960             }
 961                         if (String.IsNullOrWhiteSpace(notification.Message) && String.IsNullOrWhiteSpace(notification.Title))
 962                                 return;
 963
 964                         ShowBalloonFor(notification);
 965                 }
 966
 967             private void ShowBalloonFor(Notification notification)
 968             {
 969             Contract.Requires(notification!=null);
 970
 971             if (!Settings.ShowDesktopNotifications)
 972                 return;
 973
 974             BalloonIcon icon;
 975                 switch (notification.Level)
 976                 {
 977                     case TraceLevel.Info:
 978                     case TraceLevel.Verbose:
 979                         return;
 980                 case TraceLevel.Error:
 981                     icon = BalloonIcon.Error;
 982                     break;
 983                 case TraceLevel.Warning:
 984                         icon = BalloonIcon.Warning;
 985                         break;
 986                     default:
 987                         return;
 988                 }
 989
 990                 var tv = (ShellView) GetView();
 991                 System.Action clickAction = null;
 992                 if (notification is ExpirationNotification)
 993                 {
 994                     clickAction = () => ShowPreferences("AccountTab");
 995                 }
 996                 var balloon = new PithosBalloon
 997                                   {
 998                                       Title = notification.Title,
 999                                       Message = notification.Message,
1000                                       Icon = icon,
1001                                       ClickAction = clickAction
1002                                   };
1003                 tv.TaskbarView.ShowCustomBalloon(balloon, PopupAnimation.Fade, 4000);
1004             }
1005
1006             #endregion
1007
1008                 public void Handle(ShowFilePropertiesEvent message)
1009                 {
1010                         if (message == null)
1011                                 throw new ArgumentNullException("message");
1012                         if (String.IsNullOrWhiteSpace(message.FileName) )
1013                                 throw new ArgumentException("message");
1014                         Contract.EndContractBlock();
1015
1016                         var fileName = message.FileName;
1017                         //TODO: Display file properties for non-container folders
1018                         if (File.Exists(fileName))
1019                                 //Retrieve the full name with exact casing. Pithos names are case sensitive
1020                                 ShowFileProperties(FileInfoExtensions.GetProperFilePathCapitalization(fileName));
1021                         else if (Directory.Exists(fileName))
1022                                 //Retrieve the full name with exact casing. Pithos names are case sensitive
1023                         {
1024                                 var path = FileInfoExtensions.GetProperDirectoryCapitalization(fileName);
1025                                 if (IsContainer(path))
1026                                         ShowContainerProperties(path);
1027                                 else
1028                                         ShowFileProperties(path);
1029                         }
1030                 }
1031
1032                 private bool IsContainer(string path)
1033                 {
1034                         var matchingFolders = from account in _accounts
1035                                                                   from rootFolder in Directory.GetDirectories(account.AccountPath)
1036                                                                   where rootFolder.Equals(path, StringComparison.InvariantCultureIgnoreCase)
1037                                                                   select rootFolder;
1038                         return matchingFolders.Any();
1039                 }
1040
1041                 public FileStatus GetFileStatus(string localFileName)
1042                 {
1043                         if (String.IsNullOrWhiteSpace(localFileName))
1044                                 throw new ArgumentNullException("localFileName");
1045                         Contract.EndContractBlock();
1046
1047                         var statusKeeper = IoC.Get<IStatusKeeper>();
1048                         var status=statusKeeper.GetFileStatus(localFileName);
1049                         return status;
1050                 }
1051
1052             public void RemoveAccountFromDatabase(AccountSettings account)
1053             {
1054             var statusKeeper = IoC.Get<IStatusKeeper>();
1055             statusKeeper.ClearFolderStatus(account.RootPath);
1056             }
1057         }
1058 }