#! /usr/bin/env python3
# -*- coding: utf-8 -*-

# `pip install …`
import kafka  # … kafka-python

import argparse


def main():
    parser = argparse.ArgumentParser(description='Kafka Topic manager')
    parser.add_argument('--server', type=str, metavar='HOST', default='localhost',
        help='Kafka bootstrap-server address')
    parser.add_argument('--port', type=int, metavar='PORT', default=9092,
        help='Kafka bootstrap-server port')
    parser.add_argument('--client', type=str, default='ch-kafka-python',
        help='custom client id for this producer')

    commands = parser.add_mutually_exclusive_group()
    commands.add_argument('--create', type=str, metavar='TOPIC', nargs='+',
        help='create new topic(s) in the cluster')
    commands.add_argument('--delete', type=str, metavar='TOPIC', nargs='+',
        help='delete existing topic(s) from the cluster')

    args = parser.parse_args()
    config = {
        'bootstrap_servers': f'{args.server}:{args.port}',
        'client_id': args.client,
    }

    client = kafka.KafkaAdminClient(**config)
    if args.create:
        print((client.create_topics(args.create)))
    elif args.delete:
        print((client.delete_topics(args.delete)))

    client.close()
    return 0


if __name__ == "__main__":
    exit(main())