70 lines
3.1 KiB
Python
70 lines
3.1 KiB
Python
#!/usr/bin/env python3
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"""build-queue — 把歌曲列表 + 播放地址合成 mpv 队列（内部原语，被 netease-music.sh 调用）
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用法: build-queue.py <songs.json> <urls.txt> <queue.json> <queue.m3u8> [start，从 1 开始]
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songs.json: [{"id","name","artist","ms"}, ...]
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urls.txt: 每行 "<id>\t<档位>\t<播放地址>"（取不到地址的歌不写进来）
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输出: "picked skipped" 一行；queue.json 按 m3u 顺序存曲目，供 status/like/lyric 反查。
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**为什么 m3u 里写的是 URL 而不是 id**：网易云的直链是限时签名 URL，实测取出来约 **5 分钟**就 403。
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所以长队列不能靠预取地址（放到后半段全部失效，听感是「歌还在放但没声音」）。
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这里的做法是：m3u 里写的仍是取地址那一刻的 URL（保证刚建队就能立刻出声、零等待），
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同时 queue.json 记下这批地址的取用时刻；播到过期地址时由入口的 keepalive 重取（见 netease-music.sh）。
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"""
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import json
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import sys
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import time
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def main():
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songs_path, urls_path, queue_path, m3u_path = sys.argv[1:5]
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songs = json.load(open(songs_path, encoding="utf-8"))
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urls = {}
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levels = {}
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for line in open(urls_path, encoding="utf-8"):
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line = line.strip()
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if not line:
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continue
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parts = line.split("\t")
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sid, level, url = (parts[0], parts[1], parts[2]) if len(parts) == 3 else (parts[0], "", parts[-1])
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if url:
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urls[sid] = url
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levels[sid] = level
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picked = [s for s in songs if str(s["id"]) in urls]
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start = None
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if len(sys.argv) > 5:
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requested = int(sys.argv[5]) - 1
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if not 0 <= requested < len(songs) or str(songs[requested]["id"]) not in urls:
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print('error=notfound\nhint=--start 指定的歌曲不可播，队列未替换', file=sys.stderr)
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return 4
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start = 1 + sum(str(s["id"]) in urls for s in songs[:requested])
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for s in picked:
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s["level"] = levels.get(str(s["id"]), "") # 服务端实际给的档位（VIP 歌可能被降档）
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with open(queue_path, "w", encoding="utf-8") as f:
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json.dump(
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{
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"songs": picked,
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"skipped": len(songs) - len(picked),
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"as_of": time.strftime("%Y-%m-%dT%H:%M:%S%z"),
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**({"start": start} if start is not None else {}),
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},
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f,
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ensure_ascii=False,
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indent=1,
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)
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with open(m3u_path, "w", encoding="utf-8") as f:
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f.write("#EXTM3U\n")
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for s in picked:
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# 标题前缀 [#id]：mpv 开了 shuffle 后顺序和 queue.json 不一致，
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# 靠它把「mpv 在放/队列第几项」映射回歌（见 scripts/lib/mpv-map.py）。
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f.write("#EXTINF:%d,[#%s] %s - %s\n%s\n" % ((s.get("ms") or 0) // 1000, s["id"], s["artist"], s["name"], urls[str(s["id"])]))
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print(len(picked), len(songs) - len(picked))
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return 0
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if __name__ == "__main__":
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if len(sys.argv) < 5 or sys.argv[1] in ("-h", "--help"):
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print(__doc__)
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sys.exit(0 if len(sys.argv) > 1 else 2)
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sys.exit(main())
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