import logging
import threading

from flask_login import current_user
from flask_socketio import SocketIO, emit

from backend import app

logger = logging.getLogger("lrc.websocket")

async_mode = 'threading'  # set to traditional python threading model
# async_mode = None
socketio = SocketIO(app, cors_allowed_origins="*", async_mode=async_mode)


class WebSocketBase:
    def __init__(self, flask_app_context=None):
        if flask_app_context is None:
            self.flask_app_context = app
            self.socket_thread = None

    def start_websocket_in_thread(self, host=None, port=None, debug=None):
        self.socket_thread = threading.Thread(
            target=self.start_websocket,
            args=(host, port, debug))
        self.socket_thread.start()
        return self.socket_thread

    def start_websocket(self, host=None, port=None, debug=None):
        if debug is None:
            debug = self.flask_app_context.debug
        socketio.run(self.flask_app_context, host=host, port=port, debug=debug)

    @staticmethod
    @socketio.on('connect')
    def connect_handler():
        logger.debug("new connection...")
        print(current_user)
        if current_user.is_authenticated:
            logger.debug("user is authenticated")
            print("allowed!")
            emit('my response',
                 {'message': '{0} has joined'.format(current_user.name)},
                 broadcast=True)
        else:
            logger.info("user is not authenticated!")
            print("not allowed!!")
            return False  # not allowed here

    @socketio.on_error()
    def handle_error(self, error):
        logger.error(error)
        print(error)


if __name__ == '__main__':
    wsb = WebSocketBase()
    #wsb.start_websocket_in_thread(debug=True)
    wsb.start_websocket(debug=True)