parley/parley.py

import sanic  # type: ignore

import messages
import storage

app = sanic.Sanic()

cache = storage.Cache()
db = storage.Storage()


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

@app.websocket("/socket")
async def socket(request: sanic.request.Request, ws: sanic.websocket.WebSocketConnection) -> sanic.response.HTTPResponse:
    initial = await ws.recv()
    config: messages.InitialConfig = messages.Message.decode(initial)
    sanic.log.logger.info(
        f'connected websocket for {config.user} in game {config.game}')
    cache.add_connection(config.game, ws)

    try:
        for (author, content) in db.get_backlog(config.game):
            await ws.send(messages.Post(author, content).json())
        async for payload in ws:
            msg = messages.Message.decode(payload)
            db.add_msg(config.user, msg.content, config.game)
            for w in cache.get_connections(config.game):
                await w.send(messages.Post(config.user, msg.content).json())
    finally:
        sanic.log.logger.info(f'removing websocket for {config.game}')
        cache.remove_connection(config.game, ws)

if __name__ == '__main__':
    try:
        app.run()
    finally:
        db.close()