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import re
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from urllib.parse import urlparse, parse_qs, urlencode
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def parse_bili(url: str):
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    """
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    解析 B 站链接：
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    - 普通视频：提取 BV 号 + 分页 p
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    - 番剧：提取 ep 号 + 分页 p
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    返回 (type, id, page) 或 None
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    """
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    if not url:
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        return None
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    page = None
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    # 补齐协议头
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    safe_url = url
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    if not safe_url.startswith("http"):
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        if safe_url.startswith("//"):
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            safe_url = "https:" + safe_url
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        else:
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            safe_url = "https://" + safe_url
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    # 解析 p 参数
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    if "." in safe_url and "?" in safe_url:
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        parsed = urlparse(safe_url)
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        params = parse_qs(parsed.query)
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        p = params.get("p", [None])[0]
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        if p and p.isdigit():
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            page = p
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    # 1. 普通视频：bilibili.com/video/BVxxxx
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    if "bilibili.com/video/" in url:
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        bv_match = re.search(r"BV[0-9A-Za-z]+", url)
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        if bv_match:
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            return ("video", bv_match.group(0), page)
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    # 2. 番剧：bilibili.com/bangumi/play/epxxxx 或 ssxxxx
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    if "bilibili.com/bangumi/play/" in url:
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        ep_match = re.search(r"ep(\d+)", url)
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        if ep_match:
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            return ("bangumi_ep", ep_match.group(1), page)
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        ss_match = re.search(r"ss(\d+)", url)
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        if ss_match:
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            return ("bangumi_ss", ss_match.group(1), page)
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    return None
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def build_embed_url(kind: str, vid: str, page: str = None) -> str:
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    """构建 B 站嵌入播放器 URL"""
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    base = "https://player.bilibili.com/player.html"
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    params = {}
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    if kind == "video":
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        params["bvid"] = vid
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    elif kind == "bangumi_ep":
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        params["ep_id"] = vid
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    elif kind == "bangumi_ss":
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        params["season_id"] = vid
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    if page:
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        params["p"] = page
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    return f"{base}?{urlencode(params)}"
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def main():
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    print("=== B 站视频/番剧解析工具 ===")
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    print("支持：")
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    print("  - 普通视频：https://www.bilibili.com/video/BVxxxx")
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    print("  - 番剧：    https://www.bilibili.com/bangumi/play/epxxxx")
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    print("输入 q 退出\n")
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    while True:
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        url = input("请输入 B 站链接：").strip()
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        if url.lower() in ("q", "quit", "exit"):
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            print("已退出。")
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            break
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        result = parse_bili(url)
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        if not result:
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            print("❌ 无法识别该链接，请确认是 B 站视频或番剧链接\n")
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            continue
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        kind, vid, page = result
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        embed_url = build_embed_url(kind, vid, page)
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        kind_name = {
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            "video": "普通视频",
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            "bangumi_ep": "番剧（EP）",
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            "bangumi_ss": "番剧（SS）",
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        }[kind]
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        print(f"\n✅ 解析成功")
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        print(f"   类型: {kind_name}")
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        print(f"   ID:   {vid}")
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        print(f"   分页: {page if page else '未指定'}")
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        print(f"   嵌入链接: {embed_url}")
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        print(f"\n   可复制到 iframe 中使用：")
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        print(f'   <iframe src="{embed_url}" allowfullscreen></iframe>\n')
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if __name__ == "__main__":
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    main()