import nio
import sys

class Matrix:
    def __init__(self, app):
        self.app = app
        self.client = nio.AsyncClient(
            app.config.matrix_homeserver_url,
            app.config.matrix_full_bot_id,
        )
        self.client.add_event_callback(self.on_message, nio.RoomMessage)

    async def prepare(self):
        await self.client.login(self.app.config.matrix_bot_password)

    async def finish(self):
        await self.client.close()

    async def run(self):
        await self.client.sync_forever(timeout=30000)

    async def on_message(self, room, event):
        print(room, event, file=sys.stderr)