rename-mpv-images

#!/usr/bin/env python3

"""
Rename images from mpv screenshots, retaining the timestamp in the name, but removing the original filename

\b
My mpv config has the following line:
screenshot-template="%f-%wH.%wM.%wS.%wT"

\b
That creates images with names like:
some-long-filename-here-12.34.56.789.jpg

\b
This script renames them to:
name-12.34.56.789.jpg
"""

from pathlib import Path
from typing import Sequence

import click


@click.command(help=__doc__)
@click.option("--name", prompt=True, type=str, help="prefix for images")
@click.argument(
    "IMAGES", type=click.Path(exists=True, path_type=Path), required=True, nargs=-1
)
def main(name: str, images: Sequence[Path]) -> None:
    if not name.strip():
        raise click.BadParameter("name cannot be empty")
    for image in images:
        if "-" not in image.stem:
            click.echo(f"Skipping {image}, no '-' specifying timestamp")
            continue
        timestamp = image.stem.rsplit("-", maxsplit=1)[1]
        if not timestamp.strip():
            click.echo(f"Skipping {image}, no timestamp")
            continue

        new_name = f"{name}-{timestamp}{image.suffix}"
        image.rename(new_name)


if __name__ == "__main__":
    main()