import pika

connection = pika.BlockingConnection(pika.ConnectionParameters('localhost', 5672, '/', pika.PlainCredentials("user", "password")))

channel = connection.channel()

channel.queue_declare(queue='research_proposals')

print("Waiting for proposals...")

def process_proposal(ch, method, properties, body):
    proposal = body.decode()
    acronym, title, description, amount = proposal.split(',')

    if 200000 <= int(amount) <= 500000:
        channel.basic_publish(exchange='',
                              routing_key=properties.reply_to,
                              properties=pika.BasicProperties(correlation_id=properties.correlation_id),
                              body="approved")
        project_info=f"{acronym},{title},{description},{amount}"
        channel.basic_publish(exchange='', routing_key='approved_projects', body=project_info)
        print(f"{acronym} approved")
    else:
        channel.basic_publish(exchange='',
                              routing_key=properties.reply_to,
                              properties=pika.BasicProperties(correlation_id=properties.correlation_id),
                              body="rejected")
        print(f"{acronym} rejected")

channel.basic_consume(queue='research_proposals', on_message_callback=process_proposal, auto_ack=True)

channel.start_consuming()