vndangkhoa/kv-music
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Added metadata for downloads mostly

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This commit is contained in:
navtej968 2025-12-04 11:02:04 +05:30
parent ae7fae9b3d
commit af4f75d998
2 changed files with 169 additions and 8 deletions
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176
js/downloads.js
View file

@ -162,6 +162,46 @@ async function downloadTrackBlob(track, quality, api, lyricsManager = null) {
return blob;
}
function buildTrackMetadata(track, api) {
const artists = [];
if (Array.isArray(track.artists) && track.artists.length) {
for (const a of track.artists) artists.push(a.name || a);
} else if (track.artist && track.artist.name) {
artists.push(track.artist.name);
}
return {
id: track.id,
title: track.title || null,
artists,
album: track.album?.title || null,
albumArtist: track.album?.artist?.name || track.artist?.name || null,
trackNumber: track.trackNumber ?? null,
discNumber: track.discNumber ?? null,
durationMs: track.duration ?? null,
releaseDate: track.album?.releaseDate || null,
bitrate: track.audioQuality || null
};
}
async function addCoverToZipIfMissing(zip, folderPath, coverId, api) {
if (!coverId) return;
const coverPath = folderPath ? `${folderPath}/cover.jpg` : 'cover.jpg';
if (zip.file(coverPath)) return;
try {
const url = api.getCoverUrl(coverId, '1000');
const resp = await fetch(url);
if (!resp.ok) return;
const blob = await resp.blob();
zip.file(coverPath, blob);
} catch (e) {
console.warn('Could not fetch cover for zip:', e);
}
}
export async function downloadAlbumAsZip(album, tracks, api, quality, lyricsManager = null) {
const JSZip = await loadJSZip();
const zip = new JSZip();
@ -176,6 +216,9 @@ export async function downloadAlbumAsZip(album, tracks, api, quality, lyricsMana
const notification = createBulkDownloadNotification('album', album.title, tracks.length);
try {
const albumCoverId = album.cover || album.album?.cover || album.coverId || null;
for (let i = 0; i < tracks.length; i++) {
const track = tracks[i];
const filename = buildTrackFilename(track, quality);
@ -186,6 +229,21 @@ export async function downloadAlbumAsZip(album, tracks, api, quality, lyricsMana
const blob = await downloadTrackBlob(track, quality, api);
zip.file(`${folderName}/${filename}`, blob);
try {
const meta = buildTrackMetadata(track, api);
const metaFilename = filename.replace(/\.[^.]+$/, '.json');
zip.file(`${folderName}/${metaFilename}`, JSON.stringify(meta, null, 2));
} catch (e) {
console.warn('Could not attach metadata for', trackTitle, e);
}
try {
await addCoverToZipIfMissing(zip, folderName, albumCoverId || track.album?.cover, api);
} catch (e) {
}
if (lyricsManager && lyricsSettings.shouldDownloadLyrics()) {
try {
const lyricsData = await lyricsManager.fetchLyrics(track.id);
@ -250,6 +308,20 @@ export async function downloadPlaylistAsZip(playlist, tracks, api, quality, lyri
const blob = await downloadTrackBlob(track, quality, api);
zip.file(`${folderName}/${filename}`, blob);
// add metadata JSON
try {
const meta = buildTrackMetadata(track, api);
const metaFilename = filename.replace(/\.[^.]+$/, '.json');
zip.file(`${folderName}/${metaFilename}`, JSON.stringify(meta, null, 2));
} catch (e) {
console.warn('Could not attach metadata for', trackTitle, e);
}
// add cover per track/playlist (attempt once per track)
try {
await addCoverToZipIfMissing(zip, folderName, track.album?.cover, api);
} catch (e) {}
if (lyricsManager && lyricsSettings.shouldDownloadLyrics()) {
try {
const lyricsData = await lyricsManager.fetchLyrics(track.id);
@ -319,6 +391,18 @@ export async function downloadDiscography(artist, api, quality, lyricsManager =
const blob = await downloadTrackBlob(track, quality, api);
zip.file(`${rootFolder}/${albumFolder}/${filename}`, blob);
try {
const meta = buildTrackMetadata(track, api);
const metaFilename = filename.replace(/\.[^.]+$/, '.json');
zip.file(`${rootFolder}/${albumFolder}/${metaFilename}`, JSON.stringify(meta, null, 2));
} catch (e) {
console.warn('Could not attach metadata for', track.title, e);
}
try {
await addCoverToZipIfMissing(zip, `${rootFolder}/${albumFolder}`, track.album?.cover || album.cover, api);
} catch (e) {}
if (lyricsManager && lyricsSettings.shouldDownloadLyrics()) {
try {
const lyricsData = await lyricsManager.fetchLyrics(track.id);
@ -441,25 +525,101 @@ export async function downloadCurrentTrack(track, quality, api, lyricsManager =
api
);
await api.downloadTrack(track.id, quality, filename, {
signal: abortController.signal,
onProgress: (progress) => {
updateDownloadProgress(track.id, progress);
}
});
// Manually fetch the stream so we can include metadata and cover in a ZIP
const lookup = await api.getTrack(track.id, quality);
let streamUrl;
completeDownloadTask(track.id, true);
if (lookup.originalTrackUrl) {
streamUrl = lookup.originalTrackUrl;
} else {
streamUrl = api.extractStreamUrlFromManifest(lookup.info.manifest);
if (!streamUrl) {
throw new Error('Could not resolve stream URL');
}
}
const resp = await fetch(streamUrl, { signal: abortController.signal, cache: 'no-store' });
if (!resp.ok) throw new Error(`Fetch failed: ${resp.status}`);
const contentLength = resp.headers.get('Content-Length');
const totalBytes = contentLength ? parseInt(contentLength, 10) : 0;
let receivedBytes = 0;
const reader = resp.body ? resp.body.getReader() : null;
const chunks = [];
if (reader) {
while (true) {
const { done, value } = await reader.read();
if (done) break;
if (value) {
chunks.push(value);
receivedBytes += value.byteLength;
updateDownloadProgress(track.id, {
stage: 'downloading',
receivedBytes,
totalBytes: totalBytes || undefined
});
}
}
} else {
const blob = await resp.blob();
chunks.push(new Uint8Array(await blob.arrayBuffer()));
receivedBytes = chunks.reduce((s, c) => s + c.length, 0);
updateDownloadProgress(track.id, { stage: 'downloading', receivedBytes, totalBytes: receivedBytes });
}
const audioBlob = new Blob(chunks, { type: resp.headers.get('Content-Type') || 'audio/flac' });
// Create ZIP with audio + metadata + cover + lyrics
const JSZip = await loadJSZip();
const zip = new JSZip();
zip.file(filename, audioBlob);
try {
const meta = buildTrackMetadata(track, api);
const metaFilename = filename.replace(/\.[^.]+$/, '.json');
zip.file(metaFilename, JSON.stringify(meta, null, 2));
} catch (e) {
console.warn('Could not create metadata for current track', e);
}
try {
await addCoverToZipIfMissing(zip, '', track.album?.cover, api);
} catch (e) {}
if (lyricsManager && lyricsSettings.shouldDownloadLyrics()) {
try {
const lyricsData = await lyricsManager.fetchLyrics(track.id);
if (lyricsData) {
lyricsManager.downloadLRC(lyricsData, track);
const lrcContent = lyricsManager.generateLRCContent(lyricsData, track);
if (lrcContent) {
const lrcFilename = filename.replace(/\.[^.]+$/, '.lrc');
zip.file(lrcFilename, lrcContent);
}
}
} catch (error) {
console.log('Could not download lyrics for track');
}
}
updateDownloadProgress(track.id, { stage: 'downloading', receivedBytes: receivedBytes, totalBytes });
const zipBlob = await zip.generateAsync({ type: 'blob', compression: 'DEFLATE', compressionOptions: { level: 6 } }, (metadata) => {
// metadata.percent available but we already show streaming progress
});
const url = URL.createObjectURL(zipBlob);
const a = document.createElement('a');
a.href = url;
a.download = filename.replace(/\.[^.]+$/, '') + '.zip';
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
URL.revokeObjectURL(url);
completeDownloadTask(track.id, true);
} catch (error) {
if (error.name !== 'AbortError') {
const errorMsg = error.message === RATE_LIMIT_ERROR_MESSAGE

1
js/ui.js
View file

@ -437,4 +437,5 @@ async renderPlaylistPage(playlistId) {
}
});
}
}