import threading
import os
import json
from dotenv import load_dotenv

__users:list

# TODO: setup tcp service for authorization
def handleConnection(self, socket:socket, address):
    # states that a connection has been established
    print(f"Connected with {address}")

    # Communication with client
    while True:
        data = socket.recv(1024)
        if not data:
            break

        # decode message for handling
        message = data.decode()
        messageJson = json.loads(message)
        if messageJson["user"] in self.__users:
            handleEvents(messageJson)
        else:
            break

        print(f"received message from {address}: {message}")

    # connection is not required anymore and gets closed
    socket.close()
    print(f"connection closed for {address}")

def handleEvents(self, event):
    # decide which event should be performed
    if event["event"] == "login":
        pass
    elif event["event"] == "join_queue":
        # count queue
        # move start game if 2 players are in the queue
        # remove player from the queue once game starts
        pass
    elif event["event"] == "leave_queue":
        # just remove player from the queue
        pass
    elif event["event"] == "gameAction":
        # pass of to own handler function which handles game logic
        pass

def main(self):
    load_dotenv()

    # retrieves host data from environment
    HOST = os.getenv("HOST")
    PORT = os.getenv("PORT")

    self.__users = []

    # create tcp socket
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    # make socket bind connection info and listen for connections

    print(f"authorization server online on {HOST}:{PORT}")

    # server loop forwards connection to handleConnection
    while True:
        # accept incoming connection
        # TODO: validate this connection is a valid game connection
        client_socket, client_address = server_socket.accept()

        # create network thread for connection
        client_thread = threading.Thread(target=handleConnection, args=(client_socket, client_address))
        client_thread.start()

if __name__ == "__main__":
    main()