import argparse
import json

import pika
from pyinfra.config import get_config
from pyinfra.storage.storage import get_s3_storage

CONFIG = get_config()


def parse_args():
    parser = argparse.ArgumentParser()
    parser.add_argument("--operation", "-o", choices=["table", "layout", "figure", "image"], required=True)
    args = parser.parse_args()
    return args


def read_connection_params():
    credentials = pika.PlainCredentials(CONFIG.rabbitmq_username, CONFIG.rabbitmq_password)
    parameters = pika.ConnectionParameters(
        host=CONFIG.rabbitmq_host,
        port=CONFIG.rabbitmq_port,
        heartbeat=int(CONFIG.rabbitmq_heartbeat),
        credentials=credentials,
    )
    return parameters


def make_channel(connection) -> pika.adapters.blocking_connection.BlockingChannel:
    channel = connection.channel()
    channel.basic_qos(prefetch_count=1)
    return channel


def declare_queue(channel, queue: str):
    args = {"x-dead-letter-exchange": "", "x-dead-letter-routing-key": CONFIG.dead_letter_queue}
    return channel.queue_declare(queue=queue, auto_delete=False, durable=True, arguments=args)


def make_connection() -> pika.BlockingConnection:
    parameters = read_connection_params()
    connection = pika.BlockingConnection(parameters)
    return connection


def build_message_bodies(operation, bucket_name):

    storage = get_s3_storage(CONFIG)
    for bucket_name, pdf_name in storage.get_all_object_names(bucket_name):
        if "pdf" not in pdf_name:
            continue
        file_id = pdf_name.split(".")[0]
        dossier_id, file_id = file_id.split("/")
        message_dict = {
            "dossierId": dossier_id,
            "fileId": file_id,
            "targetFileExtension": "ORIGIN.pdf.gz",
            "responseFileExtension": f"{operation.upper()}.json.gz",
        }
        if operation != "image":
            message_dict.update({"operation": operation})

        yield json.dumps(message_dict).encode()


def main(args):
    connection = make_connection()
    channel = make_channel(connection)
    declare_queue(channel, CONFIG.request_queue)
    declare_queue(channel, CONFIG.response_queue)

    for body in build_message_bodies(args.operation, CONFIG.storage_bucket):
        channel.basic_publish("", CONFIG.request_queue, body)
        print(f"Put {body} on {CONFIG.request_queue}")

    for method_frame, _, body in channel.consume(queue=CONFIG.response_queue, inactivity_timeout=1):
        if not body:
            break
        print(f"Received {json.loads(body)}")
        channel.basic_ack(method_frame.delivery_tag)
    channel.close()


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