from pathlib import Path
from typing import Optional

import click
from libretime_shared.app import AbstractApp
from libretime_shared.cli import cli_config_options, cli_logging_options
from libretime_shared.config import DEFAULT_ENV_PREFIX

from .config_file import read_config_file
from .message_listener import MessageListener
from .status_reporter import StatusReporter

VERSION = "1.0"

DEFAULT_LIBRETIME_CONFIG_FILEPATH = Path("/etc/airtime/airtime.conf")
DEFAULT_RETRY_QUEUE_FILEPATH = Path("retry_queue")


@click.command()
@cli_logging_options
@cli_config_options
@click.option(
    "--retry-queue-filepath",
    envvar=f"{DEFAULT_ENV_PREFIX}_RETRY_QUEUE_FILEPATH",
    type=click.Path(path_type=Path),
    help="Path to the retry queue file.",
    default=DEFAULT_RETRY_QUEUE_FILEPATH,
)
def cli(
    log_level: str,
    log_filepath: Optional[Path],
    config_filepath: Optional[Path],
    retry_queue_filepath: Path,
):
    """
    Run analyzer.
    """
    Analyzer(
        log_level=log_level,
        log_filepath=log_filepath,
        # Handle default until the config file can be optional
        config_filepath=config_filepath or DEFAULT_LIBRETIME_CONFIG_FILEPATH,
        retry_queue_filepath=retry_queue_filepath,
    )


class Analyzer(AbstractApp):
    name = "analyzer"

    def __init__(
        self,
        *,
        config_filepath: Optional[Path],
        retry_queue_filepath: Path,
        **kwargs,
    ):
        super().__init__(**kwargs)

        # Read our rmq config file
        rmq_config = read_config_file(config_filepath)

        # Start up the StatusReporter process
        StatusReporter.start_thread(retry_queue_filepath)

        # Start listening for RabbitMQ messages telling us about newly
        # uploaded files. This blocks until we receive a shutdown signal.
        self._msg_listener = MessageListener(rmq_config)

        StatusReporter.stop_thread()