#!/usr/bin/env python3
from __future__ import annotations

import argparse
import json
import sys
from pathlib import Path

PROJ_ROOT = Path(__file__).resolve().parent.parent
if str(PROJ_ROOT) not in sys.path:
    sys.path.insert(0, str(PROJ_ROOT))

from data.share.poster import save_poster  # noqa: E402
from data.share.short_link import build_url  # noqa: E402


def build_parser() -> argparse.ArgumentParser:
    parser = argparse.ArgumentParser(
        prog="gaokao-poster",
        description="T7.2 分享海报生成器 (Pillow + qrcode)",
    )
    parser.add_argument("--report-json", required=True, help="报告 JSON 路径")
    parser.add_argument("--code", required=True, help="短码，如 ABC123")
    parser.add_argument(
        "--base-url",
        default="http://localhost:8000",
        help="用于拼接分享链接的基础 URL",
    )
    parser.add_argument("--output", required=True, help="输出 PNG/JPG 路径")
    parser.add_argument(
        "--unmask-name",
        action="store_true",
        help="不对考生姓名脱敏（默认脱敏）",
    )
    return parser


def main(argv: list[str] | None = None) -> int:
    args = build_parser().parse_args(argv)
    report_path = Path(args.report_json)
    try:
        report = json.loads(report_path.read_text(encoding="utf-8"))
    except FileNotFoundError:
        print(f"报告不存在: {report_path}", file=sys.stderr)
        return 2
    except json.JSONDecodeError as exc:
        print(f"报告 JSON 非法: {exc}", file=sys.stderr)
        return 2

    share_url = build_url(args.code, base=args.base_url)
    try:
        result = save_poster(
            report,
            code=args.code,
            share_url=share_url,
            output_path=args.output,
            mask_name=not args.unmask_name,
        )
    except (RuntimeError, ValueError) as exc:
        print(f"生成失败: {exc}", file=sys.stderr)
        return 1

    print(
        json.dumps(
            {
                "output": str(result.output_path),
                "format": result.format,
                "size": list(result.size),
                "share_url": share_url,
            },
            ensure_ascii=False,
            indent=2,
        )
    )
    return 0


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