from sanic import Sanic
from sanic.response import html

import socketio

sio = socketio.AsyncServer(async_mode='sanic')
app = Sanic()
sio.attach(app)


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'})


@app.listener('before_server_start')
def before_server_start(sanic, loop):
    sio.start_background_task(background_task)


@app.route('/')
async def index(request):
    with open('app.html') as f:
        return html(f.read())


@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):
    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):
    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):
    print('Client disconnected')


app.static('/static', './static')


if __name__ == '__main__':
    app.run()