"""
清洗脚本：移除 case.json 中的 capabilities 数组

背景：capability 概念已被 fragment 取代，case.json 里遗留的 capabilities 字段需要清除。

用法:
    # 清洗指定需求目录的 case.json
    python -m examples.process_pipeline.script.clean_capabilities --index 108

    # 预览（不实际修改文件）
    python -m examples.process_pipeline.script.clean_capabilities --index 108 --dry-run

    # 不备份（默认会写 .bak）
    python -m examples.process_pipeline.script.clean_capabilities --index 108 --no-backup

    # 批量清洗所有 output 目录
    python -m examples.process_pipeline.script.clean_capabilities --all
"""

import argparse
import json
import shutil
import sys
from pathlib import Path
from typing import Any, Dict, List, Tuple

# Windows 控制台 UTF-8 输出
if sys.platform == "win32":
    sys.stdout.reconfigure(encoding="utf-8")
    sys.stderr.reconfigure(encoding="utf-8")

PROJECT_ROOT = Path(__file__).resolve().parent.parent.parent.parent
OUTPUT_DIR = Path(__file__).resolve().parent.parent / "output"


def clean_case_file(
    case_file: Path,
    dry_run: bool = False,
    backup: bool = True,
) -> Dict[str, int]:
    """
    清洗单个 case.json 文件中的 capabilities 数组。

    Returns:
        stats dict: {"total_cases": int, "with_capabilities": int, "without": int}
    """
    if not case_file.exists():
        raise FileNotFoundError(f"Case file not found: {case_file}")

    with open(case_file, "r", encoding="utf-8") as f:
        data = json.load(f)

    cases = data.get("cases", [])
    with_cap_count = 0

    for case in cases:
        if "capabilities" in case:
            with_cap_count += 1
            if not dry_run:
                del case["capabilities"]

    without_count = len(cases) - with_cap_count

    if dry_run:
        return {
            "total_cases": len(cases),
            "with_capabilities": with_cap_count,
            "without": without_count,
            "action": "dry_run",
        }

    if with_cap_count > 0:
        if backup:
            backup_file = case_file.with_suffix(".json.bak")
            shutil.copy2(case_file, backup_file)

        with open(case_file, "w", encoding="utf-8") as f:
            json.dump(data, f, ensure_ascii=False, indent=2)

    return {
        "total_cases": len(cases),
        "with_capabilities": with_cap_count,
        "without": without_count,
        "action": "cleaned" if with_cap_count > 0 else "no_change",
    }


def main():
    parser = argparse.ArgumentParser(description="移除 case.json 中的 capabilities 数组")
    group = parser.add_mutually_exclusive_group(required=True)
    group.add_argument("--index", type=str, help="需求目录索引（如 108 或 108,109,110）")
    group.add_argument("--all", action="store_true", help="清洗 output 下所有需求目录")

    parser.add_argument("--dry-run", action="store_true", help="只预览，不修改文件")
    parser.add_argument("--no-backup", action="store_true", help="不创建 .bak 备份文件")
    args = parser.parse_args()

    backup = not args.no_backup

    # 确定要处理的目录列表
    target_dirs: List[Path] = []
    if args.all:
        for d in sorted(OUTPUT_DIR.iterdir()):
            if d.is_dir() and d.name.isdigit():
                case_file = d / "case.json"
                if case_file.exists():
                    target_dirs.append(d)
    else:
        for idx_str in args.index.split(","):
            idx_str = idx_str.strip()
            # 支持 "108" 或 "108/raw_cases" 格式，统一取目录名
            target_dir = OUTPUT_DIR / idx_str.zfill(3) if len(idx_str) <= 3 else OUTPUT_DIR / idx_str
            if not target_dir.exists():
                print(f"⚠️  目录不存在: {target_dir}")
                continue
            target_dirs.append(target_dir)

    if not target_dirs:
        print("❌ 没有找到任何可处理的目录")
        sys.exit(1)

    print(f"{'[Dry Run] ' if args.dry_run else ''}处理 {len(target_dirs)} 个目录 (backup={'on' if backup else 'off'})")
    print("=" * 60)

    total_cleaned = 0
    total_cases = 0
    for d in target_dirs:
        case_file = d / "case.json"
        if not case_file.exists():
            print(f"  [{d.name}] ⏭️  case.json 不存在")
            continue

        try:
            stats = clean_case_file(case_file, dry_run=args.dry_run, backup=backup)
        except Exception as e:
            print(f"  [{d.name}] ❌ 错误: {type(e).__name__}: {e}")
            continue

        total_cases += stats["total_cases"]
        total_cleaned += stats["with_capabilities"]

        icon = "🔍" if args.dry_run else ("✅" if stats["action"] == "cleaned" else "⏭️ ")
        print(
            f"  [{d.name}] {icon} "
            f"{stats['action']}: {stats['with_capabilities']}/{stats['total_cases']} cases 含 capabilities"
        )

    print("=" * 60)
    if args.dry_run:
        print(f"📊 [Dry Run Summary] 共 {total_cases} 个 case，{total_cleaned} 个含 capabilities（未修改）")
    else:
        print(f"📊 [Summary] 共处理 {total_cases} 个 case，清除了 {total_cleaned} 个 capabilities 数组")
        if backup and total_cleaned > 0:
            print(f"   💾 原始文件已备份为 case.json.bak")


if __name__ == "__main__":
    main()