import os

import tornado.ioloop
from tornado.options import define, options, parse_command_line
import tornado.web

import socketio

define("port", default=5000, help="run on the given port", type=int)
define("debug", default=False, help="run in debug mode")

sio = socketio.AsyncServer(async_mode='tornado')


async def background_task():
    """Example of how to send server generated events to clients."""
    count = 0
    while True:
        await sio.sleep(10)
        count += 1
        await sio.emit('my_response', {'data': 'Server generated event'})


class MainHandler(tornado.web.RequestHandler):
    def get(self):
        self.render("app.html")


@sio.event
async def my_event(sid, message):
    await sio.emit('my_response', {'data': message['data']}, room=sid)


@sio.event
async def my_broadcast_event(sid, message):
    await sio.emit('my_response', {'data': message['data']})


@sio.event
async def join(sid, message):
    await sio.enter_room(sid, message['room'])
    await sio.emit('my_response', {'data': 'Entered room: ' + message['room']},
                   room=sid)


@sio.event
async def leave(sid, message):
    await sio.leave_room(sid, message['room'])
    await sio.emit('my_response', {'data': 'Left room: ' + message['room']},
                   room=sid)


@sio.event
async def close_room(sid, message):
    await sio.emit('my_response',
                   {'data': 'Room ' + message['room'] + ' is closing.'},
                   room=message['room'])
    await sio.close_room(message['room'])


@sio.event
async def my_room_event(sid, message):
    await sio.emit('my_response', {'data': message['data']},
                   room=message['room'])


@sio.event
async def disconnect_request(sid):
    await sio.disconnect(sid)


@sio.event
async def connect(sid, environ):
    await sio.emit('my_response', {'data': 'Connected', 'count': 0}, room=sid)


@sio.event
def disconnect(sid, reason):
    print('Client disconnected, reason:', reason)


def main():
    parse_command_line()
    app = tornado.web.Application(
        [
            (r"/", MainHandler),
            (r"/socket.io/", socketio.get_tornado_handler(sio)),
        ],
        template_path=os.path.join(os.path.dirname(__file__), "templates"),
        static_path=os.path.join(os.path.dirname(__file__), "static"),
        debug=options.debug,
    )
    app.listen(options.port)
    tornado.ioloop.IOLoop.current().start()


if __name__ == "__main__":
    main()