public void GetQueueData(int?userId = null, int?roomNo = null)
{
IQueueMessageCallback registeredUser = OperationContext.Current.GetCallbackChannel <IQueueMessageCallback>();
var queueData = new QueueData();
if (userId != null)
{
queueData = QueueDatabase.FindQueue(userId);
}
if (roomNo != null)
{
queueData = QueueDatabase.FindQueueByRoomNo(roomNo);
}
try
{
_callbackList.Where(q => q.QueueData.RoomNo == queueData.RoomNo).Select(c => c.RegisteredUser).ToList().ForEach(
delegate(IQueueMessageCallback callback) {
callback.NotifyClientWithQueueData(queueData);
});
}
catch (Exception ex)
{
Console.WriteLine("ERROR in callback NotifyOfReceivedQueueNo: ");
Console.WriteLine(ex.Message);
}
}
//Pass additional message and call it back to the user
public void ReceiveAdditionalMessage(int userId, string additionalMessage)
{
IQueueMessageCallback registeredUser = OperationContext.Current.GetCallbackChannel <IQueueMessageCallback>();
var queueData = QueueDatabase.FindQueue(userId);
queueData.AdditionalMessage = additionalMessage;
QueueDatabase.UpdateUsersQueue(queueData);
var connectedUsers = _callbackList.Where(u => u.QueueData.UserId == userId).ToList();
foreach (var c in connectedUsers)
{
c.QueueData.AdditionalMessage = additionalMessage;
}
Console.WriteLine("Additional message: {0}", additionalMessage);
try
{
_callbackList.Where(q => q.QueueData.RoomNo == queueData.RoomNo).Select(c => c.RegisteredUser).ToList().ForEach(
delegate(IQueueMessageCallback callback) {
callback.NotifyOfReceivedAdditionalMessage(additionalMessage);
});
}
catch (Exception ex)
{
Console.WriteLine("ERROR in callback NotifyOfReceivedAdditionalMessage: ");
Console.WriteLine(ex.Message);
}
}
//User is connecting to the service, add user to list of registered users
public int Connect(int userId, int roomNo, string userName, bool isSender = false)
{
IQueueMessageCallback registeredUser = OperationContext.Current.GetCallbackChannel <IQueueMessageCallback>();
Console.WriteLine("User {0} connected at {1}", userName, DateTime.Now.ToShortTimeString());
//Add checking some credentails
if (!_callbackList.Select(u => u.RegisteredUser).Contains(registeredUser))
{
var connectingUser = new ConnectedUser(userId, registeredUser);
if (isSender)
{
var queue = QueueDatabase.FindQueue(userId);
if (queue != null)
{
connectingUser.QueueData = queue;
connectingUser.QueueData.Timestamp = DateTime.Now;
}
connectingUser.QueueData.UserId = userId;
connectingUser.QueueData.RoomNo = roomNo;
connectingUser.QueueData.Owner = userName;
_callbackList.Add(connectingUser);
QueueDatabase.AddQueue(connectingUser.QueueData);
}
else
{
//NOT TESTED
var queue = QueueDatabase.FindQueueByRoomNo(roomNo);
connectingUser.QueueData = queue;
_callbackList.Add(connectingUser);
}
}
try
{
_callbackList.Select(c => c.RegisteredUser).ToList().ForEach(
delegate(IQueueMessageCallback callback) {
callback.NotifyOfEstablishedConnection(userName);
});
}
catch (Exception ex)
{
Console.WriteLine("ERROR in callback NotifyOfEstablishedConnection: ");
Console.WriteLine(ex.Message);
}
return(_registeredUsers++);
}
//Pass new queue number and call it back to the user
public void ReceiveQueueNo(int userId, int queueNo, string userInitials)
{
IQueueMessageCallback registeredUser = OperationContext.Current.GetCallbackChannel <IQueueMessageCallback>();
var queueData = QueueDatabase.FindQueue(userId);
//if queueNo > 0 update queueNo and turn off break, then update database
if (queueNo > 0)
{
queueData.QueueNo = queueNo;
queueData.isBreak = false;
}
//else if queueNo = -1 set break to true and keep do nothing with queueNo, then update database
else if (queueNo == -1)
{
queueData.isBreak = true;
}
queueData.UserInitials = userInitials;
QueueDatabase.UpdateUsersQueue(queueData);
//update queue of each connected user containing same queue userid
var connectedUsers = _callbackList.Where(u => u.QueueData.UserId == userId).ToList();
foreach (var c in connectedUsers)
{
c.QueueData = queueData;
}
try
{
_callbackList.Where(q => q.QueueData.RoomNo == queueData.RoomNo).Select(c => c.RegisteredUser).ToList().ForEach(
delegate(IQueueMessageCallback callback) {
callback.NotifyOfReceivedQueueNo(queueData.QueueNoMessage);
});
}
catch (Exception ex)
{
Console.WriteLine("ERROR in callback NotifyOfReceivedQueueNo: ");
Console.WriteLine(ex.Message);
}
}