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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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"""数据模型、异常与 ffmpeg 格式常量。
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(自 music_downloader.py 拆出,行为与原实现一致。)
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"""
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from __future__ import annotations
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from dataclasses import dataclass
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from enum import Enum
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from core import sync_http as requests # 同步门面(底层 aiohttp,替代 requests)
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# ============ 类型定义 ============
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class QualityLevel(Enum):
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"""音质等级枚举"""
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STANDARD = "standard"
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EXHIGH = "exhigh"
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LOSSLESS = "lossless"
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HIRES = "hires"
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SKY = "sky"
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JYEFFECT = "jyeffect"
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JYMASTER = "jymaster"
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DOLBY = "dolby"
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@dataclass
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class MusicInfo:
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"""音乐信息数据类"""
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id: int
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name: str
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artists: str
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album: str
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pic_url: str
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duration: int
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track_number: int
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download_url: str
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file_type: str
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file_size: int
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quality: str
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lyric: str = ""
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tlyric: str = ""
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publish_year: int | None = None
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@dataclass
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class DownloadResult:
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"""下载结果数据类"""
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success: bool
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file_path: str | None = None
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file_size: int = 0
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error_message: str = ""
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music_info: MusicInfo | None = None
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class DownloadException(Exception):
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"""下载异常类"""
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pass
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class DownloadCanceled(DownloadException):
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"""下载被用户取消"""
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pass
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class _RetryFromScratch(requests.RequestException):
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"""内部信号:断点续传起点失效(HTTP 416 等),清除 .part 后从头重试"""
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pass
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# ============ 工具映射表 ============
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# API 返回的 type -> 文件扩展名
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API_TYPE_TO_EXT = {
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"mp3": ".mp3",
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"flac": ".flac",
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"m4a": ".m4a",
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"mp4": ".mp4",
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"ogg": ".ogg",
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"opus": ".opus",
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}
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# 文件扩展名 -> ffmpeg 输出 muxer 名称
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EXT_TO_FFMPEG_FORMAT = {
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".mp3": "mp3",
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".flac": "flac",
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".m4a": "mp4",
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".mp4": "mp4",
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".ogg": "ogg",
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".opus": "opus",
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}
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# 支持元数据写入的扩展名
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METADATA_FORMATS = {".mp3", ".flac", ".m4a", ".mp4", ".ogg", ".opus"}
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