snowy-yang
e1357dd412
- 撤销 3381e9b/1b972ec 中 jx/5s/bl/ap 四个短码，恢复 joox/5sing/bili/apple； qian→bd、migu→mg 保留 - 目录与文件对齐保留的新 id：sdk/qian/→sdk/bd/、sdk/migu/→sdk/mg/、 sdk/apis/qian.ts→bd.ts、migu.ts→mg.ts、src/http/migu-stream.ts→mg-stream.ts （规则改为「目录=对外 id」，聚合入口的模块变量同步更名；music.migu.cn 等域名、 上游 music-lib 对照注释、miguGet 等功能标识符不动） - 对外 id 全表：kw kg tx wy qs xm me qt lr mg bd joox 5sing bili apple **破坏性变更**：joox/5sing/bili/apple 四平台的 URL、/sources 返回与 data/auth.json 凭据键恢复全名，已存短码键的登录态需重新登录。 验证：typecheck ✓、pnpm test 112/112 ✓
74 lines
3.3 KiB
TypeScript
74 lines
3.3 KiB
TypeScript
// 千千音乐 URL 获取（/v1/song/tracklink，签名通道）
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// 档位：3000=flac / 320 / 128 / 64(aac)。实测（2026-10-02）：
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// - 免费曲目（搜索 isVip=0，如 SSR Beats 特辑）各档位均返回明文直链 data.path（audio0x.dmhmusic.com，CDN 签名 URL）
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// - VIP/版权曲目返回 200/errno 22000 但 data 无 path、无 trail_audio_info，需登录态带会员 cookie 才可能有直链
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// 契约：getMusicUrl(songInfo, type) → { promise, cancelHttp }，promise resolve { type, url }（type 为实际命中档位）
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import { apiOk, firstNonEmpty, trackLink } from '../bd/util.ts'
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// 请求档位 → tracklink rate 尝试链（优先请求档，逐级降级；与上游 3000→320→128→64 的探测顺序一致）
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const QUALITY_RATES: Record<string, string[]> = {
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'64k': ['64'],
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'128k': ['128', '64'],
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'320k': ['320', '128', '64'],
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'flac': ['3000', '320', '128', '64'],
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'flac24bit': ['3000', '320', '128', '64'],
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}
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const DEFAULT_RATES = ['3000', '320', '128', '64']
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export const supportQualitys = ['64k', '128k', '320k', 'flac']
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/** 命中档位判定：以响应 format/rate/bits 为准（可能低于请求档位） */
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const typeOfHit = (requestRate: string, data: any): string => {
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const format = String(data?.format ?? '').toLowerCase()
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const rate = Number(data?.rate ?? 0)
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const bits = Number(data?.bits ?? 0)
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if (format === 'flac' || rate >= 1000) return bits === 24 ? 'flac24bit' : 'flac'
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if (rate >= 320 || requestRate === '320') return '320k'
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if (rate >= 128 || requestRate === '128') return '128k'
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return '64k'
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}
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/** 逐档请求 tracklink，取首个带 path 的档位；register 用于取流对象取消当前请求 */
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export const getDownloadUrl = async(tsid: string, type?: string, register?: (req: any) => void) => {
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const id = String(tsid ?? '').trim()
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if (!id) throw new Error('千千歌曲 id（TSID）为空')
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const rates = QUALITY_RATES[String(type ?? '')] ?? DEFAULT_RATES
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let lastErr: any = null
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for (const rate of rates) {
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try {
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const body = await trackLink(id, rate, register)
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if (!apiOk(body)) {
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lastErr = new Error(body?.errmsg || `千千取流失败（errno ${body?.errno}）`)
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continue
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}
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const data = body?.data ?? {}
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const url = firstNonEmpty(data?.path, data?.trail_audio_info?.path)
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if (url) return { type: typeOfHit(rate, data), url }
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lastErr = new Error('千千该歌曲无可用直链（VIP/版权曲目需登录态，免费曲目可直接取流）')
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} catch (err) {
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lastErr = err
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}
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}
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throw lastErr ?? new Error('千千未找到可用音频直链')
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}
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export const getMusicUrl = (songInfo: any, type?: string) => {
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const requestObj: any = { promise: null, cancelHttp() {} }
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let current: any = null
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requestObj.cancelHttp = () => {
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current?.cancelHttp?.()
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current = null
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}
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requestObj.promise = (async() => {
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// 上游 GetDownloadURL：Song.URL 已有直链时直接复用（Parse 场景）
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if (songInfo?.url) return { type: type || '128k', url: String(songInfo.url) }
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const tsid = firstNonEmpty(songInfo?.songmid, songInfo?.TSID)
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if (!tsid) throw new Error('千千歌曲 id（TSID）为空')
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return getDownloadUrl(tsid, type, (req) => { current = req })
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})()
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return requestObj
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}
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export default { getMusicUrl, getDownloadUrl, supportQualitys }
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