import pika
import time
import json
import random


class LecturePublisher:
    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')

    def publish_lecture_event(self):
        lecture_event = {
            'event_type': 'new_lecture',
            'lecture_id': random.randint(1, 100),
            'topic': f'Lecture on Topic {random.randint(1, 10)}',
            'timestamp': time.strftime('%Y-%m-%d %H:%M:%S')
        }
        self.channel.basic_publish(exchange='lecture_exchange', routing_key='', body=json.dumps(lecture_event))
        print(f" [x] Sent lecture event: {lecture_event}")


if __name__ == '__main__':
    lecture_publisher = LecturePublisher()
    try:
        while True:
            lecture_publisher.publish_lecture_event()
            time.sleep(1)
    except KeyboardInterrupt:
        lecture_publisher.connection.close()