import sys
import pika
from retry import retry

from mini_queue.utils.config import CONFIG


def callback(channel, method, properties, body):
    print("Received %r" % body)
    response = body
    channel.basic_publish(exchange="", routing_key=CONFIG.rabbitmq.queues.output, body=response)
    channel.basic_ack(delivery_tag=method.delivery_tag)


def init_params():
    credentials = pika.PlainCredentials(CONFIG.rabbitmq.user, CONFIG.rabbitmq.password)
    parameters = pika.ConnectionParameters(
        host=CONFIG.rabbitmq.host,
        port=CONFIG.rabbitmq.port,
        heartbeat=CONFIG.rabbitmq.heartbeat,
        credentials=credentials,
    )
    return parameters


# @retry(pika.exceptions.AMQPConnectionError, delay=5, jitter=(1, 3))
def consume(parameters, queue):
    connection = pika.BlockingConnection(parameters)
    channel = connection.channel()
    channel.basic_consume(queue=queue, auto_ack=False, on_message_callback=callback)
    print(" [*] Waiting for messages. To exit press CTRL+C")

    channel.start_consuming()