public static void HandleEvent(PresenceChangeEvent e, MainViewModel dataContext)
{
Application.Current.Dispatcher.BeginInvoke(
DispatcherPriority.Background,
new Action(() =>
{
if (dataContext.Friends.All(friend => friend.FriendName != e.AccountName))
{
dataContext.Friends.Add(new FriendViewModel
{
FriendName = e.AccountName,
Presence = e.PresenceStatus
});
}
else
{
var friend = dataContext.Friends.First(f => f.FriendName == e.AccountName);
friend.Presence = e.PresenceStatus;
}
}));
}
public void NotifyFriendsOfPresenceChange(Account account, IEnumerable<Account> friends)
{
Parallel.ForEach(friends, friend =>
{
if (ServiceHelpers.GetPresence(friend) == PresenceStatus.Online)
{
IEvent evnt = new PresenceChangeEvent
{
Type = EventType.PresenceChange,
Timestamp = DateTime.Now,
AccountName = account.UserName,
PresenceStatus = ServiceHelpers.GetPresence(account)
};
// ReSharper disable once PossibleInvalidOperationException
EventManager.SendEventToClient(friend.IpAddress, friend.Port.Value, evnt);
}
});
}
