"""清理缓存工具"""

import sys
import os
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from utils import CacheManager
from config import Config

def clear_cache(pattern=None, confirm=True):
    """清理缓存
    
    Args:
        pattern: 匹配模式，None表示清理所有
        confirm: 是否需要确认
    """
    
    cache = CacheManager()
    info = cache.get_cache_info()
    
    print("="*70)
    print("🗑️  缓存清理工具")
    print("="*70)
    print(f"\n当前缓存状态:")
    print(f"  文件数量: {info['count']}")
    print(f"  占用空间: {info['size_mb']} MB")
    print(f"  缓存目录: {Config.CACHE_DIR}")
    
    if info['count'] == 0:
        print("\n✓ 缓存为空，无需清理")
        return
    
    if pattern:
        print(f"\n将清理匹配 '{pattern}' 的缓存")
    else:
        print(f"\n⚠️  将清理所有缓存文件")
    
    if confirm:
        response = input("\n确认清理？(y/n): ").strip().lower()
        if response not in ['y', 'yes', '是']:
            print("已取消")
            return
    
    print("\n清理中...")
    cache.clear(pattern)
    
    # 显示清理后状态
    new_info = cache.get_cache_info()
    print(f"\n✓ 清理完成")
    print(f"  剩余文件: {new_info['count']}")
    print(f"  释放空间: {info['size_mb'] - new_info['size_mb']:.2f} MB")

def main():
    import argparse
    
    parser = argparse.ArgumentParser(description="清理缓存")
    parser.add_argument("-p", "--pattern", help="匹配模式")
    parser.add_argument("-y", "--yes", action="store_true", 
                       help="不询问直接清理")
    
    args = parser.parse_args()
    
    clear_cache(args.pattern, not args.yes)

if __name__ == "__main__":
    main()