public void BeginListen(string channelId)
{
var channelGuid = default(Guid);
if (Guid.TryParse(channelId, out channelGuid) == false) return;
var db = new TellMeWYSDB();
var channel = db.Channels.Find(channelGuid);
if (channel == null) return;
var account = this.Context.User.ToAccount(db);
if (channel.ChannelMembers.Any(_ => _.AccountId == account.Id) == false) return;
this.Groups.Add(this.Context.ConnectionId, channelGuid.ToString("N"));
}
public static Account ToAccount(this IPrincipal principal, TellMeWYSDB db)
{
var account = db.Accounts.FirstOrDefault(_ => _.UniqueIdInProvider == principal.Identity.Name);
return account;
}