import socket
import sys
import logging
from time import sleep


class TcpServer:
    def __init__(self, port, client_handler):
        self._port = port
        self._client_handler = client_handler

        self._server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self._server_socket.setsockopt(
            socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

        server_address = ('0.0.0.0', port)
        self._server_socket.bind(server_address)
        self._server_socket.listen(1)

    def handle_connection(self):
        try:
            connection, client_address = self._server_socket.accept()
            logging.info(f"Client connected: {client_address}")
            self._client_handler(connection)
        except KeyboardInterrupt:
            sys.exit()


def handle_client(connection):
    connection.settimeout(3.0)

    while True:
        connection.sendall(
            b"""{
                    "jsonrpc": "2.0",
                    "id": "1",
                    "method": "SetLedPattern",
                    "params": {
                        "led": 19,
                        "pattern": 3.1
                    }
                }
            """)

        try:
            res = connection.recv(1024)
            if not res:
                logging.info("Client disconnected")
                connection.close()
                break

            logging.info(f"SetLedPattern response: {res.decode()}")
        except socket.timeout:
            logging.error("Connection timed out")
            break

        sleep(1)


def main():
    logging.basicConfig(format='%(asctime)s %(levelname)s %(message)s',
                        datefmt='%H:%M:%S',
                        level=logging.DEBUG,
                        stream=sys.stdout)

    port = 65432

    server = TcpServer(port=port, client_handler=handle_client)
    logging.info(f"Started TCP server on port {port}")

    while True:
        try:
            server.handle_connection()
        except Exception as e:
            logging.error(
                f"An error occurred while handling the client connection: {e}")


if __name__ == "__main__":
    main()