/// <summary>
/// Method which runs infinitely until an exit command is provided
/// Takes user input for the messages to be sent in the chat
/// </summary>
static void Messaging()
{
Msg InitialMessage = new Msg("Joined", Msg.Code.NewUser, _screenName, null);
_currentConsole.Display(UI.dCode.Message, InitialMessage, _listUsers);
while (true)
{
string message = Console.ReadLine();
if (message.Length > 0)
{
try
{
Utility.Msg msg;
if (message.Equals("exit", StringComparison.OrdinalIgnoreCase))
{
_cache.RaiseCustomEvent(Utility.Msg.Code.UserLeft, _screenName);
return;
}
else
{
msg = new Utility.Msg(message, Utility.Msg.Code.NewUser, _screenName, null);
_cache.RaiseCustomEvent(Utility.Msg.Code.Text,
Utility.Helper.ToByteBuffer(msg));
}
}
catch (Exception e)
{
}
}
}
}
/// <summary>
/// Cache custom event that is raised everytime a change occurs like
/// new user joining
/// user leaving
/// message recieved
/// </summary>
/// <param name="opcode"></param>
/// <param name="operand"></param>
static void OnChatRoomEvent(object opcode, object operand)
{
Utility.Msg.Code code = (Utility.Msg.Code)opcode;
Utility.Msg msg;
switch (code)
{
case Utility.Msg.Code.NewUser:
string userName = operand as string;
if (!_listUsers.Contains(userName))
{
_listUsers.Add(userName);
msg = new Utility.Msg("Just joined the chat room", Utility.Msg.Code.NewUser, userName, null);
_currentConsole.Display(Utility.UI.dCode.Message, msg, _listUsers);
}
break;
case Utility.Msg.Code.UserLeft:
userName = operand as string;
if (_listUsers.Contains(userName)) // if user exist in list
{
_listUsers.Remove(userName);
msg = new Utility.Msg("Left the chat room", Utility.Msg.Code.NewUser, userName, null);
_currentConsole.Display(Utility.UI.dCode.Message, msg, _listUsers);
}
break;
case Utility.Msg.Code.Text:
{
msg = Utility.Helper.FromByteBuffer(operand as byte[]) as Utility.Msg;
if (msg == null)
{
return; /// not a message maybe
}
if ((msg.To == null))
{
_currentConsole.Display(Utility.UI.dCode.Message, msg, _listUsers);
}
}
break;
}
}
