#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
B站元数据提取 CLI 工具

支持命令行调用，输出 JSON 格式数据
"""

import argparse
import asyncio
import json
import os
import sys
from pathlib import Path
from typing import Dict, Any

from bilibili_extractor import BilibiliExtractor


def format_number(num: int) -> str:
    """格式化数字"""
    if num >= 100000000:
        return f"{num / 100000000:.1f}亿"
    elif num >= 10000:
        return f"{num / 10000:.1f}万"
    else:
        return f"{num:,}"


def extract_video(extractor: BilibiliExtractor, bvid: str, output_file: str = None) -> Dict[str, Any]:
    """提取视频元数据"""
    result = extractor.extract_video_metadata(bvid)
    
    # 如果需要输出到文件
    if output_file:
        with open(output_file, 'w', encoding='utf-8') as f:
            json.dump(result, f, ensure_ascii=False, indent=2)
    
    return result


def extract_article(extractor: BilibiliExtractor, cvid: str, output_file: str = None) -> Dict[str, Any]:
    """提取专栏元数据"""
    result = extractor.extract_article_metadata(cvid)
    
    if output_file:
        with open(output_file, 'w', encoding='utf-8') as f:
            json.dump(result, f, ensure_ascii=False, indent=2)
    
    return result


def extract_up(extractor: BilibiliExtractor, mid: str, output_file: str = None) -> Dict[str, Any]:
    """提取UP主信息（包含订阅跟踪所需信息）"""
    result = asyncio.run(extractor._extract_up_async(mid))
    
    if output_file:
        with open(output_file, 'w', encoding='utf-8') as f:
            json.dump(result, f, ensure_ascii=False, indent=2)
    
    return result


def extract_series(extractor: BilibiliExtractor, mid: str, series_id: str, output_file: str = None) -> Dict[str, Any]:
    """提取系列合集元数据"""
    result = asyncio.run(extractor._extract_series_async(mid, series_id))
    
    if output_file:
        with open(output_file, 'w', encoding='utf-8') as f:
            json.dump(result, f, ensure_ascii=False, indent=2)
    
    return result


def extract_readlist(extractor: BilibiliExtractor, rl_id: str, output_file: str = None) -> Dict[str, Any]:
    """提取专栏合集元数据"""
    result = asyncio.run(extractor._extract_readlist_async(rl_id))
    
    if output_file:
        with open(output_file, 'w', encoding='utf-8') as f:
            json.dump(result, f, ensure_ascii=False, indent=2)
    
    return result


def extract_favlist(extractor: BilibiliExtractor, fid: str, output_file: str = None) -> Dict[str, Any]:
    """提取收藏夹元数据"""
    result = asyncio.run(extractor._extract_favlist_async(fid))
    
    if output_file:
        with open(output_file, 'w', encoding='utf-8') as f:
            json.dump(result, f, ensure_ascii=False, indent=2)
    
    return result


def main():
    """主函数"""
    parser = argparse.ArgumentParser(
        description='B站元数据提取工具',
        formatter_class=argparse.RawDescriptionHelpFormatter,
        epilog="""
示例:
  # 提取视频元数据
  python bilibili_metadata.py --id "BV1xx411c7mD" --type video
  
  # 提取专栏元数据
  python bilibili_metadata.py --id "cv43780186" --type article
  
  # 提取UP主信息
  python bilibili_metadata.py --id "7770724" --type up
  
  # 提取系列合集信息
  python bilibili_metadata.py --id "123456" --type series --mid "7770724"
  
  # 提取专栏合集信息
  python bilibili_metadata.py --id "rl123456" --type readlist
  
  # 提取收藏夹信息
  python bilibili_metadata.py --id "123456" --type favlist
  
  # 输出到文件
  python bilibili_metadata.py --id "BV1xx411c7mD" --type video --output result.json
        """
    )
    
    parser.add_argument(
        '--id', 
        required=True,
        help='B站资源ID（BV号、CV号或UP主ID）'
    )
    parser.add_argument(
        '--type', 
        required=True,
        choices=['video', 'article', 'up', 'series', 'readlist', 'favlist'],
        help='资源类型'
    )
    parser.add_argument(
        '--mid',
        help='UP主ID (用于series类型)'
    )
    parser.add_argument(
        '--output', 
        '-o',
        help='输出文件路径（JSON格式）'
    )
    parser.add_argument(
        '--headless',
        action='store_true',
        default=True,
        help='使用无头模式（浏览器，默认开启，使用API）'
    )
    parser.add_argument(
        '--timeout',
        type=int,
        default=30,
        help='超时时间（秒，默认30）'
    )
    parser.add_argument(
        '--pretty',
        action='store_true',
        default=True,
        help='格式化输出（默认开启）'
    )
    
    args = parser.parse_args()
    
    # 创建提取器
    extractor = BilibiliExtractor(headless=args.headless, timeout=args.timeout)
    
    try:
        # 根据类型提取数据
        if args.type == 'video':
            result = extract_video(extractor, args.id, args.output)
        elif args.type == 'article':
            result = extract_article(extractor, args.id, args.output)
        elif args.type == 'up':
            result = extract_up(extractor, args.id, args.output)
        elif args.type == 'series':
            if not args.mid:
                print(json.dumps({
                    "success": False,
                    "error": "series类型需要提供 --mid 参数"
                }, ensure_ascii=False, indent=2))
                sys.exit(1)
            result = extract_series(extractor, args.mid, args.id, args.output)
        elif args.type == 'readlist':
            result = extract_readlist(extractor, args.id, args.output)
        elif args.type == 'favlist':
            result = extract_favlist(extractor, args.id, args.output)
        else:
            print(json.dumps({
                "success": False,
                "error": f"不支持的类型 {args.type}"
            }, ensure_ascii=False, indent=2))
            sys.exit(1)
        
        # 生成文件名
        platform = "bilibili"
        filename = f"{platform}_{args.id}.meta.json"
        filepath = args.output or filename
        
        # 统一输出格式
        output = {
            "success": True,
            "filename": filename,
            "filepath": str(Path(filepath).resolve()) if filepath else None,
            "message": f"{args.type}元数据提取成功"
        }
        
        print(json.dumps(output, ensure_ascii=False, indent=2))
        
        # 如果指定了输出路径，则写入文件
        if args.output:
            with open(args.output, 'w', encoding='utf-8') as f:
                json.dump(result, f, ensure_ascii=False, indent=2)
        
    except Exception as e:
        print(json.dumps({
            "success": False,
            "error": str(e),
            "detail": type(e).__name__
        }, ensure_ascii=False, indent=2))
        sys.exit(1)


if __name__ == '__main__':
    main()