#!/usr/bin/env python3
import logging
import os
import sys
import pika
import json

from extraction import run_everything


def message_callback(ch, method, properties, body):
    run_everything(json.loads(body.decode('utf-8')))


def main():
    logging.basicConfig(filename="", format="%(asctime)s - %(name)s [%(levelname)s]: %(message)s",
                        level=logging.DEBUG if '--debug' in sys.argv else logging.INFO)

    logging.info("Connecting to MQ service...")
    connection = pika.BlockingConnection(pika.connection.URLParameters(os.environ['PIKA_URL']))
    channel = connection.channel()
    channel.exchange_declare(exchange='wave-extract', exchange_type='fanout')

    queue_declare_result = channel.queue_declare(queue='', exclusive=True)
    queue_name = queue_declare_result.method.queue

    channel.queue_bind(exchange='wave-extract', queue=queue_name)
    channel.basic_consume(queue=queue_name, on_message_callback=message_callback, auto_ack=True)

    logging.info("Connection complete! Listening to messages...")
    try:
        channel.start_consuming()
    except KeyboardInterrupt:
        logging.info("SIGINT Received! Stopping stuff...")
        channel.stop_consuming()


if __name__ == '__main__':
    main()