This commit is contained in:
wont-stream 2025-04-08 02:07:54 -04:00
parent 54dfc1d822
commit 67dce9ddc0
9 changed files with 457 additions and 1 deletions

140
src/helpers/utils.ts Normal file
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import { FlacStreamTagger } from "flac-stream-tagger";
export default class {
authHeaders: { [key: string]: string }
constructor(authHeaders: { [key: string]: string }) {
this.authHeaders = authHeaders
}
async fetchTrack(id: number) {
const audio = await fetch(`https://api.tidal.com/v1/tracks/${id}/playbackinfopostpaywall/v4?audioquality=HI_RES_LOSSLESS&playbackmode=STREAM&assetpresentation=FULL`, {
headers: this.authHeaders
})
return await audio.json() as {
trackId: number,
audioPresentation: string,
audioMode: string,
audioQuality: string,
manifestMimeType: string,
manifestHash: string,
manifest: string,
albumReplayGain: number,
albumPeakAmplitude: number,
trackReplayGain: number,
trackPeakAmplitude: number,
bitDepth: number,
sampleRate: number,
}
}
async fetchTracks() {
const tracks = await fetch("https://listen.tidal.com/v1/users/199235629/favorites/tracks?offset=0&limit=10000&order=DATE&orderDirection=DESC&countryCode=US", {
headers: this.authHeaders
})
return await tracks.json();
}
async downloadFlac(manifestMimeType:string, manifest: string) {
const id = Bun.nanoseconds().toString(36);
if (manifestMimeType === "application/dash+xml") {
await Bun.write(`tmp/${id}.mpd`, Buffer.from(manifest, "base64").toString("utf-8"))
await Bun.$`mpv --ao=null --stream-record=tmp/${id}.flac --speed=100 tmp/${id}.mpd`.quiet()
await Bun.file(`tmp/${id}.mpd`).delete();
const flac = Bun.file(`tmp/${id}.flac`)
const audioBuffer = await flac.arrayBuffer();
await flac.delete()
return audioBuffer;
} else if (manifestMimeType === "application/vnd.tidal.bts") {
const data = JSON.parse(Buffer.from(manifest, "base64").toString("utf-8")) as {
"mimeType": string,
"codecs": string,
"encryptionType": string,
"urls": string[]
}
const flac = await fetch(data.urls[0])
return await flac.arrayBuffer();
}
return new ArrayBuffer(0);
}
async tagFlac(id: number, audioBuffer: ArrayBuffer) {
const trackReq = await fetch(`https://api.tidal.com/v1/tracks/${id}/?countryCode=US`, {
headers: this.authHeaders
})
const track = await trackReq.json() as {
title: string,
replayGain: number,
peak: number,
streamStartDate: string,
trackNumber: number,
volumeNumber: number, // discNumber
copyright: string,
bpm: number,
url: string, // comment
isrc: string,
artists: [
{
name: string,
}
],
album: {
id: number,
title: string,
cover: string,
},
};
const alubmReq = await fetch(`https://api.tidal.com/v1/albums/${track.album.id}/?countryCode=US`, {
headers: this.authHeaders
})
const album = await alubmReq.json() as {
title: string,
numberOfTracks: number,
releaseDate: string,
cover: string,
upc: string,
artists: [
{
name: string,
}
],
}
return FlacStreamTagger.fromBuffer(Buffer.from(audioBuffer), {
tagMap: {
title: track.title,
trackNumber: track.trackNumber.toString(),
discNumber: track.volumeNumber.toString(),
bpm: track.bpm.toString(),
date: track.streamStartDate,
copyright: track.copyright,
REPLAYGAIN_TRACK_GAIN: track.replayGain.toString(),
REPLAYGAIN_TRACK_PEAK: track.peak.toString(),
comment: track.url,
isrc: track.isrc,
upc: album.upc,
artist: track.artists.map((a) => a.name),
album: album.title,
albumArtist: album.artists.map((a) => a.name),
totalTracks: album.numberOfTracks.toString(),
year: album.releaseDate.split("-")[0] || "",
},
picture: {
buffer: Buffer.from(await (await fetch(`https://resources.tidal.com/images/${album.cover.replaceAll("-", "/")}/1280x1280.jpg`)).arrayBuffer()),
}
}).toBuffer()
}
}