# -*- coding: utf-8 -*-
#
#            PySceneDetect: Python-Based Video Scene Detector
#   -------------------------------------------------------------------
#     [  Site:    https://scenedetect.com                           ]
#     [  Docs:    https://scenedetect.com/docs/                     ]
#     [  Github:  https://github.com/Breakthrough/PySceneDetect/    ]
#
# Copyright (C) 2014-2023 Brandon Castellano <http://www.bcastell.com>.
# PySceneDetect is licensed under the BSD 3-Clause License; see the
# included LICENSE file, or visit one of the above pages for details.
#
"""Entry point for PySceneDetect's command-line interface."""

from logging import getLogger
import sys

from backend.scenedetect._cli import scenedetect
from backend.scenedetect._cli.context import CliContext
from backend.scenedetect._cli.controller import run_scenedetect

from backend.scenedetect.platform import logging_redirect_tqdm, FakeTqdmLoggingRedirect


def main():
    """PySceneDetect command-line interface (CLI) entry point."""
    cli_ctx = CliContext()
    try:
        # Process command line arguments and subcommands to initialize the context.
        scenedetect.main(obj=cli_ctx) # Parse CLI arguments with registered callbacks.
    except SystemExit as exit:
        help_command = any(arg in sys.argv for arg in ['-h', '--help'])
        if help_command or exit.code != 0:
            raise

    # If we get here, processing the command line and loading the context worked. Let's run
    # the controller if we didn't process any help requests.
    logger = getLogger('pyscenedetect')
    # Ensure log messages don't conflict with any progress bars. If we're in quiet mode, where
    # no progress bars get created, we instead create a fake context manager. This is done here
    # to avoid needing a separate context manager at each point a progress bar is created.
    log_redirect = FakeTqdmLoggingRedirect() if cli_ctx.quiet_mode else logging_redirect_tqdm(
        loggers=[logger])

    with log_redirect:
        try:
            run_scenedetect(cli_ctx)
        except KeyboardInterrupt:
            logger.info('Stopped.')
            if __debug__:
                raise
        except BaseException as ex:
            if __debug__:
                raise
            else:
                logger.critical('Unhandled exception:', exc_info=ex)
                raise SystemExit(1)


if __name__ == '__main__':
    main()