"""Command-line entry point for the roster formatter."""

from __future__ import annotations

import argparse
from pathlib import Path

from roster_formatter import (
    BASE_DIR,
    LayoutSettings,
    RosterFormatError,
    RosterPeriod,
    format_roster,
)


def build_parser() -> argparse.ArgumentParser:
    parser = argparse.ArgumentParser(description="Generate a formatted roster PNG")
    parser.add_argument(
        "--input",
        type=Path,
        default=BASE_DIR / "input" / "original.pdf",
        help="one-page landscape Letter roster PDF",
    )
    parser.add_argument(
        "--output-dir",
        type=Path,
        default=BASE_DIR / "output",
        help="directory for the formatted PNG",
    )
    parser.add_argument(
        "--month",
        help="override the month/year label (for example, 'September 2026' or '2026-09')",
    )

    advanced = parser.add_argument_group("advanced layout adjustments")
    advanced.add_argument("--content-shift", type=float, default=100)
    advanced.add_argument("--bottom-margin", type=float, default=60)
    advanced.add_argument("--logo-x", type=float, default=50)
    advanced.add_argument("--logo-y", type=float, default=-10)
    advanced.add_argument("--logo-scale", type=float, default=0.27)
    advanced.add_argument("--date-x", type=float, default=460)
    advanced.add_argument("--date-y", type=float, default=88)
    advanced.add_argument("--date-font-size", type=int, default=48)
    return parser


def main() -> int:
    args = build_parser().parse_args()
    try:
        period = RosterPeriod.parse(args.month)
        settings = LayoutSettings(
            content_shift=args.content_shift,
            bottom_margin=args.bottom_margin,
            logo_x=args.logo_x,
            logo_y=args.logo_y,
            logo_scale=args.logo_scale,
            date_x=args.date_x,
            date_y=args.date_y,
            date_font_size=args.date_font_size,
        )
        output_path = args.output_dir / period.output_filename
        result = format_roster(args.input, output_path, period, settings)
    except RosterFormatError as exc:
        raise SystemExit(f"error: {exc}") from exc

    print(f"Created {result.path}")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())