/// <summary>
/// Remove user from the Hash Tables and inform all users about it
/// </summary>
/// <param name="tcpClient"></param>
public ServerConnectionResult RemoveUser(TcpClient tcpClient)
{
ServerConnectionResult result = null;
try
{
// If user already exists
if (Connections[tcpClient] != null)
{
var user = Connections[tcpClient];
Users.Remove(Connections[tcpClient]);
Connections.Remove(tcpClient);
string userLefttext = $"{user} left.";
UpdateServerAndUsers(userLefttext);
}
result = new ServerConnectionResult(true);
}
catch (Exception ex)
{
result = new ServerConnectionResult(ex);
}
return(result);
}
/// <summary>
/// Add user in the Hash Tables and inform the new connection to all users.
/// </summary>
/// <param name="tcpClient"></param>
/// <param name="nickname"></param>
public ServerConnectionResult AddUser(TcpClient tcpClient, string nickname)
{
ServerConnectionResult result = null;
try
{
Users.Add(nickname, tcpClient);
Connections.Add(tcpClient, nickname);
string newConnectionText = $"{Connections[tcpClient]} has joined.";
UpdateServerAndUsers(newConnectionText);
result = new ServerConnectionResult(true);
}
catch (Exception ex)
{
result = new ServerConnectionResult(ex);
}
return(result);
}
/// <summary>
/// Send message based on the configuration (public or privately)
/// </summary>
/// <param name="source"></param>
/// <param name="message"></param>
public ServerConnectionResult SendMessage(string source, string message)
{
ServerConnectionResult result = null;
try
{
string fullMessage = string.Empty;
// Split the messages using |||
// Count = 1 => Public Message
// Count = 2 => Public Message to One User
// Count = 3 => Private Message to Specific User
var messageContent = message.Split("|||");
var mesageContentCount = messageContent.Count();
// Public message
if (mesageContentCount == 1)
{
fullMessage = $"{source} says to all: {message}";
UpdateServerInformation(fullMessage);
SendPublicMessage(fullMessage);
}
// Public message to one user
else if (mesageContentCount == 2)
{
string publicUser = messageContent[0];
string publicMessage = messageContent[1];
fullMessage = $"{source} says to {publicUser}: {publicMessage}";
var userExists = CheckIfUserExists(publicUser);
if (userExists)
{
UpdateServerInformation(fullMessage);
SendPublicMessage(fullMessage);
}
else
{
SendServerPrivateMessage(ServerChatServiceConstants.USER_NOT_FOUND, source);
}
}
// Private message to specific user
else if (mesageContentCount == 3)
{
string privateUser = messageContent[0];
string privateMessage = messageContent[1];
fullMessage = $"{source} says to {privateUser} (privately): {privateMessage}";
var userExists = CheckIfUserExists(privateUser);
if (userExists)
{
UpdateServerInformation(fullMessage);
SendPrivateMessage(fullMessage, source, messageContent[0]);
}
else
{
SendServerPrivateMessage(ServerChatServiceConstants.USER_NOT_FOUND, source);
}
}
result = new ServerConnectionResult(true);
}
catch (Exception ex)
{
result = new ServerConnectionResult(ex);
}
return(result);
}
