import os

from configobj import ConfigObj
from kombu import Exchange, Queue

# Get the broker string from airtime.conf
RMQ_CONFIG_SECTION = "rabbitmq"


def get_rmq_broker():
    rmq_config = ConfigObj(os.environ["RMQ_CONFIG_FILE"])
    rmq_settings = parse_rmq_config(rmq_config)
    return "amqp://{username}:{password}@{host}:{port}/{vhost}".format(**rmq_settings)


def parse_rmq_config(rmq_config):
    return {
        "host": rmq_config[RMQ_CONFIG_SECTION]["host"],
        "port": rmq_config[RMQ_CONFIG_SECTION]["port"],
        "username": rmq_config[RMQ_CONFIG_SECTION]["user"],
        "password": rmq_config[RMQ_CONFIG_SECTION]["password"],
        "vhost": rmq_config[RMQ_CONFIG_SECTION]["vhost"],
    }


# Celery amqp settings
BROKER_URL = get_rmq_broker()
CELERY_RESULT_BACKEND = "amqp"  # Use RabbitMQ as the celery backend
CELERY_RESULT_PERSISTENT = True  # Persist through a broker restart
CELERY_TASK_RESULT_EXPIRES = 900  # Expire task results after 15 minutes
CELERY_RESULT_EXCHANGE = "celeryresults"  # Default exchange - needed due to php-celery
CELERY_QUEUES = (
    Queue("podcast", exchange=Exchange("podcast"), routing_key="podcast"),
    Queue(exchange=Exchange("celeryresults"), auto_delete=True),
)
CELERY_EVENT_QUEUE_EXPIRES = 900  # RabbitMQ x-expire after 15 minutes

# Celery task settings
CELERY_TASK_SERIALIZER = "json"
CELERY_RESULT_SERIALIZER = "json"
CELERY_ACCEPT_CONTENT = ["json"]
CELERY_TIMEZONE = "Europe/Berlin"
CELERY_ENABLE_UTC = True
