#!/usr/bin/python

import socketserver


class RequestHandler(socketserver.BaseRequestHandler):

    def handle(self):
        # self.request - TCP socket connected to the client
        print("Hl")
        self.data = self.request.recv(1024).strip()
        print("{} sent:".format(self.client_address[0]))
        print(self.data.decode())
        # just send back ACK for data arrival confirmation
        self.request.sendall("ACK from TCP Server".encode())

    def ping(self, param):
        return "PONG"

    def command_pass(self, desired_password):
        return desired_password == self.password

    def command_nickname(self, user, desired_nickname):

        if desired_nickname not in self.user_list:
            self.user_list.append(desired_nickname)
            self.user_list.remove(user)
            message = ":" + user + " NICK " + desired_nickname
            return True
        else:
            self.user_list.remove(desired_nickname)
            if user in self.user_list:
                self.user_list.remove(user)
            # issue kill command (?)
            return True


class IRCServer(socketserver.TCPServer):
    """
    The TCP Server class for demonstration.

    Note: We need to implement the Handle method to exchange data
    with TCP client.

    """

    def __init__(self, server_adress):
        self.servername = 'localhost'
        self.channels = {}
        self.clients = {}
        socketserver.TCPServer.__init__(self, server_adress, RequestHandler)


if __name__ == "__main__":
    HOST, PORT = "localhost", 9999

    ircserver = IRCServer((HOST, PORT))
    ircserver.serve_forever()