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using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
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();
};
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();
}
else
{
// The channel was already open, so just register for all the events.
pushChannel.ChannelUriUpdated += (sender, e) =>
{
EnableNotifications();
};
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());
};
}
}
private ObservableCollection<PageViewModel> _pages;
public ObservableCollection<PageViewModel> Pages
{
get { return _pages ?? (_pages = new ObservableCollection<PageViewModel>()); }
}
static readonly string IsDataLoadingPropertyName = ExpressionHelper.GetPropertyName<AppViewModel>(x => x.IsDataLoading);
bool _isDataLoading;
public bool IsDataLoading
{
get { return _isDataLoading; }
set
{
_isDataLoading = value;
NotifyPropertyChanged(IsDataLoadingPropertyName);
foreach (var page in Pages)
{
page.LoadMessagesPageCommand.NotifyCanExecuteChanged();
}
}
}
private AccountManager _acc;
public AccountManager Account
{
get { return _acc ?? (_acc = new AccountManager()); }
}
private RestClient _cl;
public RestClient Client
{
get
{
return _cl ?? (_cl = new RestClient("http://api.juick.com")
{
UserAgent = "Juick 1.1/Windows Phone " + Environment.OSVersion.Version
});
}
}
public void EnableNotifications()
{
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();
}
public void DisableNotifications()
{
if (pushChannel.IsShellToastBound)
pushChannel.UnbindToShellToast();
Account.NotificationUri = string.Empty;
}
}
}
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