"""Command line entry point."""

from __future__ import annotations

import argparse
import sys

from . import __version__
from .pdf import SourceType, open_source, page_raster


def _info(args: argparse.Namespace) -> int:
    source = open_source(args.pdf, SourceType(args.type) if args.type else None)
    note = f" (detected {source.detected.value}, overridden)" if source.overridden else ""
    print(f"{source.path.name}: {source.type.value}{note}, {len(source)} pages")
    for i in range(len(source)):
        h, w = page_raster(source, i).shape
        print(f"  p{i + 1:<3} {w}x{h}")
    source.close()
    return 0


def main(argv: list[str] | None = None) -> int:
    parser = argparse.ArgumentParser(
        prog="noteman-slicer",
        description="Cut score PDFs into noteman's slice images and markers.",
    )
    parser.add_argument("--version", action="version", version=__version__)
    sub = parser.add_subparsers(dest="command", required=True)

    info = sub.add_parser("info", help="classify a PDF and report its page rasters")
    info.add_argument("pdf")
    info.add_argument(
        "--type",
        choices=[t.value for t in SourceType],
        help="override source-type detection",
    )
    info.set_defaults(func=_info)

    args = parser.parse_args(argv)
    return args.func(args)


if __name__ == "__main__":
    sys.exit(main())