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refactor: 拆分 4 个巨石模块为包,清理过时注释并删除作废文档
为什么:单文件 1100~1900 行的巨石模块让「改一处要通读全文」;同时注释里残留 大量已删台账的编号,以及「Flask/FastAPI 双栈迁移期」这类已失实的架构描述, 会误导后来者按不复存在的架构去改代码。 拆分(对外导入路径不变,行为零变更): - music_downloader.py -> music_downloader/(models/downloader/cover/_http/_log/_concurrency) - auth_system.py -> auth_system/(db/security/users/credits/ledger/mail/cards/backup...) - music_api.py -> music_api/(api/client/crypto/qr/cookies/compat/constants/errors) - services/runtime.py -> services/(api_service/_shared/_taskcore/downloads/batch/podcast/ streaming/tasks);services/runtime.py 保留为兼容门面 兼容性做法:各包用 __init__.py 以 __all__ 原样再导出全部符号,既有调用点 (auth_system.xxx / services.xxx / from music_api import Y)零改动;路径常量改为经包属性 动态读取(auth_system.DB_PATH),否则测试的 monkeypatch 会静默失效并写到生产库。 修复 9 处代码损伤(上一轮注释清理把 `()` 当「空括号残留」删掉所致;用「与拆分前逐字 等价」校验逐一定位,静态检查只会报出其中 4 处): - core/config.py ).strip() or '*' - core/state.py threading.Lock() x2 - qr_login.py datetime.now() / .strip() - music_downloader/downloader.py .lower() - services/podcast.py set() / time.time() x2 清理与删除: - 删除 部署文档.md / 功能介绍.md / README_私有包警告.txt - 清理指向已删台账与文档的过时编号注释;把「迁移期 / 两栈 / 双框架 / 已迁移」等 失实描述改写为现状描述(保留 `<-> Flask /path` 映射表等仍有价值的契约来源说明) - _mkpkg.py:公开包剔除清单去掉已不存在的文档名;私有包警告改为自包含 - pyproject.toml:补 pythonpath = ["."],使裸跑 pytest 不再 import core 失败 验证:ruff 全通过;pyright 0 errors / 0 warnings(102 文件);pytest 144 passed; 真实 uvicorn 冒烟 6 条路由符合预期且生产 data/ 指纹未变;忽略注释的逐字等价性校验通过。
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# -*- coding: utf-8 -*-
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"""网易云音乐下载器(适配 ffmpeg 写入元数据)
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提供功能:
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- 同步 / 异步下载(本地落盘 / 内存返回)
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- 批量并发下载
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- 进度查询
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- 基于 ffmpeg 的元数据 + 封面写入(MP3/FLAC/M4A/MP4/OGG/Opus)
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设计要点:
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1. ffmpeg 路径懒加载:每次写入前重新检测,支持服务启动后中途安装
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2. 显式 -f 指定输出格式 + 临时文件保留原扩展名在最后,双保险
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3. MP4(杜比全景声 EAC3)单独分支,启用 +faststart
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4. 扩展名优先使用 API 返回的 type 字段,URL/Content-Type 兜底
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"""
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# 兼容门面:实现已按职责拆分到同包各子模块,此处原样再导出。
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# 用 `__all__` 声明再导出(ruff F401 与 pyright 均据此认定「有意再导出」),
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# 使既有调用点(music_downloader.xxx / from music_downloader import Y)零改动。
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from ._concurrency import (
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_FILE_LOCKS,
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_FILE_LOCKS_GUARD,
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CountingSemaphore,
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RefCountedFileLock,
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_FileLockHandle,
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get_file_lock,
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)
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from ._http import (
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_AUDIO_MAGIC,
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_SESSION_LOCAL,
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DEFAULT_UA,
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DL_CHUNK_SIZE,
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_sniff_audio_header,
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get_http_session,
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)
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from ._log import (
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logger,
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)
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from .cover import (
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_COVER_CACHE,
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_COVER_CACHE_LOCK,
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_COVER_CACHE_MAX,
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_COVER_CACHE_ORDER,
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fetch_cover_bytes,
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)
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from .downloader import (
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MusicDownloader,
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)
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from .models import (
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API_TYPE_TO_EXT,
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EXT_TO_FFMPEG_FORMAT,
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METADATA_FORMATS,
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DownloadCanceled,
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DownloadException,
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DownloadResult,
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MusicInfo,
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QualityLevel,
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_RetryFromScratch,
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)
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__all__ = [
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'API_TYPE_TO_EXT',
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'DEFAULT_UA',
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'DL_CHUNK_SIZE',
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'EXT_TO_FFMPEG_FORMAT',
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'METADATA_FORMATS',
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'_AUDIO_MAGIC',
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'_COVER_CACHE',
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'_COVER_CACHE_LOCK',
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'_COVER_CACHE_MAX',
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'_COVER_CACHE_ORDER',
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'_FILE_LOCKS',
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'_FILE_LOCKS_GUARD',
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'_SESSION_LOCAL',
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'CountingSemaphore',
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'DownloadCanceled',
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'DownloadException',
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'DownloadResult',
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'MusicDownloader',
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'MusicInfo',
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'QualityLevel',
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'RefCountedFileLock',
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'_FileLockHandle',
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'_RetryFromScratch',
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'_sniff_audio_header',
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'fetch_cover_bytes',
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'get_file_lock',
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'get_http_session',
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'logger',
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]
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