From e3409abca917fbc5fd49d6366276fff0e0f60d3e Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Mon, 15 Apr 2013 14:08:35 +0400
Subject: Initial push notifications support

---
 Juick/ViewModels/AppViewModel.cs | 120 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)

(limited to 'Juick/ViewModels')

diff --git a/Juick/ViewModels/AppViewModel.cs b/Juick/ViewModels/AppViewModel.cs
index 77970df..29e2a6b 100644
--- a/Juick/ViewModels/AppViewModel.cs
+++ b/Juick/ViewModels/AppViewModel.cs
@@ -5,11 +5,98 @@ using System.Linq;
 using Juick.Classes;
 using JuickApi;
 using RestSharp;
+using Microsoft.Phone.Notification;
+using System.Diagnostics;
+using System.Text;
 
 namespace Juick.ViewModels
 {
     public class AppViewModel : ViewModelBase
     {
+        readonly HttpNotificationChannel pushChannel; 
+
+        // The name of our push channel.
+        string channelName = "JuickChannel";
+
+        public AppViewModel()
+        {
+            pushChannel = HttpNotificationChannel.Find(channelName);
+
+                  // If the channel was not found, then create a new connection to the push service.
+            if (pushChannel == null)
+            {
+                pushChannel = new HttpNotificationChannel(channelName);
+
+                // Register for all the events before attempting to open the channel.
+                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) =>
+                {
+                    StringBuilder message = new StringBuilder();
+                    string relativeUri = string.Empty;
+
+                    message.AppendFormat("Received Toast {0}:\n", DateTime.Now.ToShortTimeString());
+
+                    // Parse out the information that was part of the message.
+                    foreach (string key in e.Collection.Keys)
+                    {
+                        message.AppendFormat("{0}: {1}\n", key, e.Collection[key]);
+
+                        if (string.Compare(
+                            key,
+                            "wp:Param",
+                            System.Globalization.CultureInfo.InvariantCulture,
+                            System.Globalization.CompareOptions.IgnoreCase) == 0)
+                        {
+                            relativeUri = e.Collection[key];
+                        }
+                    }
+                    Debug.WriteLine("Received: " + message.ToString());
+                };
+
+                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(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) =>
+                {
+                    StringBuilder message = new StringBuilder();
+                    string relativeUri = string.Empty;
+
+                    message.AppendFormat("Received Toast {0}:\n", DateTime.Now.ToShortTimeString());
+
+                    // Parse out the information that was part of the message.
+                    foreach (string key in e.Collection.Keys)
+                    {
+                        message.AppendFormat("{0}: {1}\n", key, e.Collection[key]);
+
+                        if (string.Compare(
+                            key,
+                            "wp:Param",
+                            System.Globalization.CultureInfo.InvariantCulture,
+                            System.Globalization.CompareOptions.IgnoreCase) == 0)
+                        {
+                            relativeUri = e.Collection[key];
+                        }
+                    }
+                    Debug.WriteLine("Received: " + message.ToString());
+                };
+
+                EnableNotifications(pushChannel.ChannelUri.ToString());
+            }
+        }
         private ObservableCollection<PageViewModel> _pages;
         public ObservableCollection<PageViewModel> Pages
         {
@@ -51,5 +138,38 @@ namespace Juick.ViewModels
                 });
             }
         }
+
+        public void EnableNotifications(string Url)
+        {
+            if (!Account.IsAuthenticated) return;
+            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()
+        {
+            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));
+        }
     }
 }
-- 
cgit v1.2.3