from __future__ import annotations

import argparse
from pathlib import Path

from src.engine import InteractiveRunner, StoryEngine
from src.parser import StoryValidationError, parse_story


def build_arg_parser() -> argparse.ArgumentParser:
    parser = argparse.ArgumentParser(description="simple-ink: 命令行交互式小说框架")
    parser.add_argument(
        "--story",
        type=Path,
        default=Path("data/main_story.yaml"),
        help="故事配置文件路径（YAML）",
    )
    parser.add_argument(
        "--load",
        type=Path,
        default=None,
        help="启动时立即加载存档路径",
    )
    return parser


def main() -> int:
    args = build_arg_parser().parse_args()

    try:
        parsed = parse_story(args.story)
    except StoryValidationError as exc:
        print(f"故事配置错误: {exc}")
        return 2

    for warning in parsed.warnings:
        print(f"[warning] {warning}")

    engine = StoryEngine(parsed.story)
    if args.load is not None:
        try:
            engine.load(args.load)
        except Exception as exc:
            print(f"加载启动存档失败: {exc}")
            return 3

    runner = InteractiveRunner(engine)
    runner.run()
    return 0


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