import threading

import pika
import json


class LectureConsumer2:
    def __init__(self):
        self.connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
        self.channel = self.connection.channel()

        self.channel.exchange_declare(exchange='lecture_exchange', exchange_type='fanout')

        result = self.channel.queue_declare(queue='', exclusive=True)
        self.queue_name = result.method.queue
        print('fast + ' + self.queue_name)

        self.channel.queue_bind(exchange='lecture_exchange', queue=self.queue_name)

    def callback(self, ch, method, properties, body):
        lecture_event = json.loads(body)
        print(f" [x] Consumer_fast received and processed lecture event instantly: {lecture_event}")

    def consume_lectures(self):
        self.channel.basic_consume(queue=self.queue_name, on_message_callback=self.callback)
        print(' [*] Consumer_fast waiting for lecture events. To exit press CTRL+C')
        self.channel.start_consuming()


if __name__ == '__main__':
    lecture_consumer2 = LectureConsumer2()
    try:
        lecture_consumer2.consume_lectures()
    except KeyboardInterrupt:
        lecture_consumer2.connection.close()

# if __name__ == '__main__':
#     lecture_consumer2 = LectureConsumer2()
#     try:
#         t1 = threading.Thread(target=lecture_consumer2.consume_lectures)
#         t1.start()
#         t1.join()
#     except KeyboardInterrupt:
#         lecture_consumer2.connection.close()