refactor: split downloader into modules

2026-07-22 17:46:35 +08:00
parent 1dfaed4dba
commit 536685e327
15 changed files with 935 additions and 881 deletions
@@ -0,0 +1,126 @@
+const fs = require('fs');
+const path = require('path');
+
+const ROOT_DIR = path.join(__dirname, '..');
+const APP_CONFIG_FILE = path.join(ROOT_DIR, 'config.json');
+const DEFAULT_APP_CONFIG = {
+  api: {
+    music: 'https://api.chksz.top/api/163_music',
+    lyric: 'https://api.chksz.top/api/163_lyric',
+    search: 'https://api.chksz.top/api/163_search',
+    playlist: 'https://api.chksz.top/api/163_playlist',
+    neteaseBaseUrl: 'https://music.163.com',
+  },
+  paths: {
+    downloadDir: 'downloads',
+    historyFile: 'download_history.json',
+    runtimeConfigFile: 'downloader_config.json',
+    trashDir: '.trash',
+    tempZipDir: '.tmp_zip',
+  },
+  defaults: {
+    quality: 'jymaster',
+    retries: 3,
+    historyLimit: 500,
+  },
+};
+
+function loadAppConfig() {
+  try {
+    if (!fs.existsSync(APP_CONFIG_FILE)) return DEFAULT_APP_CONFIG;
+    const config = JSON.parse(fs.readFileSync(APP_CONFIG_FILE, 'utf-8'));
+    return {
+      api: { ...DEFAULT_APP_CONFIG.api, ...(config.api || {}) },
+      paths: { ...DEFAULT_APP_CONFIG.paths, ...(config.paths || {}) },
+      defaults: { ...DEFAULT_APP_CONFIG.defaults, ...(config.defaults || {}) },
+    };
+  } catch (e) {
+    console.warn(`⚠️  配置文件读取失败，将使用默认配置: ${e.message}`);
+    return DEFAULT_APP_CONFIG;
+  }
+}
+
+function resolveConfigPath(configPath, fallback) {
+  const value = typeof configPath === 'string' && configPath.trim() ? configPath.trim() : fallback;
+  return path.isAbsolute(value) ? value : path.join(ROOT_DIR, value);
+}
+
+function getConfigString(value, fallback) {
+  return typeof value === 'string' && value.trim() ? value.trim() : fallback;
+}
+
+const APP_CONFIG = loadAppConfig();
+const API = {
+  music: getConfigString(APP_CONFIG.api.music, DEFAULT_APP_CONFIG.api.music),
+  lyric: getConfigString(APP_CONFIG.api.lyric, DEFAULT_APP_CONFIG.api.lyric),
+  search: getConfigString(APP_CONFIG.api.search, DEFAULT_APP_CONFIG.api.search),
+  playlist: getConfigString(APP_CONFIG.api.playlist, DEFAULT_APP_CONFIG.api.playlist),
+  neteaseBaseUrl: getConfigString(APP_CONFIG.api.neteaseBaseUrl, DEFAULT_APP_CONFIG.api.neteaseBaseUrl),
+};
+const NETEASE_BASE_URL = API.neteaseBaseUrl.replace(/\/$/, '');
+const DOWNLOAD_DIR = resolveConfigPath(APP_CONFIG.paths.downloadDir, DEFAULT_APP_CONFIG.paths.downloadDir);
+const HISTORY_FILE = resolveConfigPath(APP_CONFIG.paths.historyFile, DEFAULT_APP_CONFIG.paths.historyFile);
+const CONFIG_FILE = resolveConfigPath(APP_CONFIG.paths.runtimeConfigFile, DEFAULT_APP_CONFIG.paths.runtimeConfigFile);
+const TRASH_DIR = resolveConfigPath(APP_CONFIG.paths.trashDir, DEFAULT_APP_CONFIG.paths.trashDir);
+const TEMP_ZIP_DIR = resolveConfigPath(APP_CONFIG.paths.tempZipDir, DEFAULT_APP_CONFIG.paths.tempZipDir);
+const QUALITY_LEVELS = ['standard', 'exhigh', 'lossless', 'hires', 'jymaster', 'sky', 'jyeffect'];
+const QUALITY_LABELS = {
+  standard: '标准',
+  exhigh: '极高',
+  lossless: '无损',
+  hires: 'Hi-Res',
+  jymaster: '超清母带',
+  sky: '空间音频',
+  jyeffect: '高清臻品',
+};
+const DEFAULT_LEVEL = QUALITY_LEVELS.includes(APP_CONFIG.defaults.quality)
+  ? APP_CONFIG.defaults.quality
+  : DEFAULT_APP_CONFIG.defaults.quality;
+const DEFAULT_RETRIES = Number.isInteger(APP_CONFIG.defaults.retries) && APP_CONFIG.defaults.retries > 0
+  ? APP_CONFIG.defaults.retries
+  : DEFAULT_APP_CONFIG.defaults.retries;
+const HISTORY_LIMIT = Number.isInteger(APP_CONFIG.defaults.historyLimit) && APP_CONFIG.defaults.historyLimit > 0
+  ? APP_CONFIG.defaults.historyLimit
+  : DEFAULT_APP_CONFIG.defaults.historyLimit;
+
+function loadRuntimeConfig() {
+  try {
+    if (fs.existsSync(CONFIG_FILE)) return JSON.parse(fs.readFileSync(CONFIG_FILE, 'utf-8'));
+  } catch {}
+  return {};
+}
+
+function saveRuntimeConfig(config) {
+  fs.mkdirSync(path.dirname(CONFIG_FILE), { recursive: true });
+  fs.writeFileSync(CONFIG_FILE, JSON.stringify(config, null, 2), 'utf-8');
+}
+
+function getConfig(key, defaultVal) {
+  const config = loadRuntimeConfig();
+  return config[key] !== undefined ? config[key] : defaultVal;
+}
+
+function setConfig(key, val) {
+  const config = loadRuntimeConfig();
+  config[key] = val;
+  saveRuntimeConfig(config);
+}
+
+if (!fs.existsSync(DOWNLOAD_DIR)) fs.mkdirSync(DOWNLOAD_DIR, { recursive: true });
+
+module.exports = {
+  API,
+  NETEASE_BASE_URL,
+  DOWNLOAD_DIR,
+  HISTORY_FILE,
+  CONFIG_FILE,
+  TRASH_DIR,
+  TEMP_ZIP_DIR,
+  QUALITY_LEVELS,
+  QUALITY_LABELS,
+  DEFAULT_LEVEL,
+  DEFAULT_RETRIES,
+  HISTORY_LIMIT,
+  getConfig,
+  setConfig,
+};