import json
import socket
import threading

class Server:

    __address:str
    __tcpPort:str
    __udpPort:str
    __tcpSocket:socket
    __udpSocket:socket
    __TCPclientThread:threading.Thread
    __UDPclientThread:threading.Thread

    def __init__(self, address:str, tcpPort:str, udpPort:str):
        self.__address = address
        self.__tcpPort = tcpPort
        self.__udpPort = udpPort
        self.__tcpSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.__udpSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        
        self.startServer()

    # handles starting the server and assigning socket values to the local reference
    def startServer(self):
        self.__tcpSocket.bind(self.__address, self.__tcpPort)
        self.__tcpSocket.listen()
        print(f"tcp server started on: {self.__address}:{self.__tcpPort}")

        self.__udpSocket.bind(self.__address, self.__udpPort)
        self.__udpSocket.listen()
        print(f"tcp server started on: {self.__address}:{self.__udpPort}")

        # server loop forwards connection to handleConnection
        while True:
            # accept incoming connection
            # TODO: validate this connection is a valid game connection
            clientTcpSocket, clientTcpAddress = self.__tcpSocket.accept()

            # create network thread for connection
            self.__TCPClientThread = threading.Thread(target=self.handleTCPConnection, args=(clientTcpSocket, clientTcpAddress))
            self.__TCPClientThread.start()

            clientUdpSocket, clientUdpAddress = self.__udpSocket.accept()
            self.__UDPClientThread = threading.Thread(target=self.handleUDPConnection, args=(clientUdpSocket, clientUdpAddress))
            self.__UDPClientThread.start()


    # handles ticking the game loop server side converting data and passing of to the event handler
    def handleTCPConnection(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:
                self.handleTCPEvents(messageJson)
            else:
                break

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

    # handles ticking the game loop server side converting data and passing of to the event handler
    def handleUDPConnection(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:
                self.handleUDPEvents(messageJson)
            else:
                break

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

    # handles passing of event data to the right functions
    def handleTCPEvents(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

    def handleUDPEvents(self, event):
        if event["event"] == "placeCard":
            pass
        elif event["event"] == "removeCard":
            pass
        elif event["event"] == "attackCard":
            pass
        elif event["event"] == "attackPlayer":
            pass
        elif event["event"] == "activateeffectCard":
            pass
        elif event["event"] == "activatemonstereffect":
            pass