1 files changed, 62 insertions, 32 deletions
diff --git a/Juick/ViewModels/AppViewModel.cs b/Juick/ViewModels/AppViewModel.cs
index e3a58bb..4b30c08 100644
--- a/Juick/ViewModels/AppViewModel.cs
+++ b/Juick/ViewModels/AppViewModel.cs
@@ -19,7 +19,12 @@ namespace Juick.ViewModels
         readonly HttpNotificationChannel pushChannel; 
 
         // The name of our push channel.
-        string channelName = "JuickChannel";
+        private const string channelName = "JuickChannel";
+
+        public void UpdateNetworkStatus()
+        {
+            NetworkUnavailable = !DeviceNetworkInformation.IsNetworkAvailable;
+        }
 
         public void UpdateNetworkStatus()
         {
@@ -33,24 +38,19 @@ namespace Juick.ViewModels
             pushChannel = HttpNotificationChannel.Find(channelName);
 
                   // If the channel was not found, then create a new connection to the push service.
-            if (pushChannel == null)
+            if (_pushChannel == null)
             {
-                pushChannel = new HttpNotificationChannel(channelName);
+                _pushChannel = new HttpNotificationChannel(channelName);
 
                 // Register for all the events before attempting to open the channel.
-                pushChannel.ChannelUriUpdated += (sender, e) => {
-                    EnableNotifications();
-                };
-                pushChannel.ErrorOccurred += (sender, e) =>
-                {
-                    DisableNotifications();
-                };
+                _pushChannel.ChannelUriUpdated += (sender, e) => EnableNotifications(e.ChannelUri.ToString());
+                _pushChannel.ErrorOccurred += (sender, e) => DisableNotifications();
 
                 // Register for this notification only if you need to receive the notifications while your application is running.
                 // Register for this notification only if you need to receive the notifications while your application is running.
-                pushChannel.ShellToastNotificationReceived += (sender, e) =>
+                _pushChannel.ShellToastNotificationReceived += (sender, e) =>
                 {
-                    StringBuilder message = new StringBuilder();
+                    var message = new StringBuilder();
                     string relativeUri = string.Empty;
 
                     message.AppendFormat("Received Toast {0}:\n", DateTime.Now.ToShortTimeString());
@@ -71,19 +71,21 @@ namespace Juick.ViewModels
                     }
                     Debug.WriteLine("Received: " + message.ToString());
                 };
-                pushChannel.Open();                
+
+                _pushChannel.Open();
+
+                // Bind this new channel for toast events.
+                _pushChannel.BindToShellToast();
+
             }
             else
             {
                 // The channel was already open, so just register for all the events.
-                pushChannel.ChannelUriUpdated += (sender, e) =>
-                {
-                    EnableNotifications();
-                };
-                pushChannel.ErrorOccurred += (sender, e) => DisableNotifications();
+                _pushChannel.ChannelUriUpdated += (sender, e) => EnableNotifications(e.ChannelUri.ToString());
+                _pushChannel.ErrorOccurred += (sender, e) => DisableNotifications();
 
                 // Register for this notification only if you need to receive the notifications while your application is running.
-                pushChannel.ShellToastNotificationReceived += (sender, e) =>
+                _pushChannel.ShellToastNotificationReceived += (sender, e) =>
                 {
                     StringBuilder message = new StringBuilder();
                     string relativeUri = string.Empty;
@@ -105,8 +107,10 @@ namespace Juick.ViewModels
                         }
                     }
                     Debug.WriteLine("Received: " + message.ToString());
-                };                
-            }            
+                };
+
+                EnableNotifications(_pushChannel.ChannelUri.ToString());
+            }
         }
         private ObservableCollection<PageViewModel> _pages;
         public ObservableCollection<PageViewModel> Pages
@@ -141,6 +145,18 @@ namespace Juick.ViewModels
             }
         }
 
+        private bool _isNetworkUnavailable;
+        public bool NetworkUnavailable
+        {
+            get { return _isNetworkUnavailable; }
+            set
+            {
+                _isNetworkUnavailable = value; 
+                NotifyPropertyChanged(IsNetworkAvailablePropertyName);
+            }
+        }
+
+
         private AccountManager _acc;
 
         public AccountManager Account
@@ -160,23 +176,37 @@ namespace Juick.ViewModels
             }
         }
 
-        public void EnableNotifications()
+        public void EnableNotifications(string Url)
         {
             if (!Account.IsAuthenticated) return;
-            var channelUri = pushChannel.ChannelUri.ToString();
-            if (channelUri == Account.NotificationUri)
-                return;
-                Account.NotificationUri = channelUri;
-            if (!pushChannel.IsShellToastBound)
-                // Bind this new channel for toast events.
-                pushChannel.BindToShellToast();            
+            Client.Authenticator = new HttpBasicAuthenticator(Account.UserName, Account.Password);
+            Debug.WriteLine(Url.ToString());
+            if (string.IsNullOrEmpty(Account.NotificationUri) || Account.NotificationUri == Url)
+            {
+                Account.NotificationUri = Url;
+                RegisterNotificationUrl(Url);
+            }
+            else
+            {
+                UnregisterNotificationUrl(Account.NotificationUri);
+                Account.NotificationUri = Url;
+                RegisterNotificationUrl(Url);
+            }
         }
 
         public void DisableNotifications()
         {
-            if (pushChannel.IsShellToastBound)
-                pushChannel.UnbindToShellToast();
+            UnregisterNotificationUrl(Account.NotificationUri);
             Account.NotificationUri = string.Empty;            
-        }        
+        }
+
+        void RegisterNotificationUrl(string newUrl)
+        {
+            Client.ExecuteAsync(new RestRequest("/winphone/register?url=" + newUrl), response => Debug.WriteLine(response.StatusCode));
+        }
+        void UnregisterNotificationUrl(string oldUrl)
+        {
+            Client.ExecuteAsync(new RestRequest("/winphone/unregister?url=" + oldUrl), response => Debug.WriteLine(response.StatusCode));
+        }
     }
 }