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NEW: handle large playlist if api has offset capability

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This commit is contained in:
Julien Maille 2026-01-01 13:35:07 +01:00
parent 6c29bc1c73
commit 6776d2fe38
1 changed files with 47 additions and 1 deletions
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48
js/api.js
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@ -426,7 +426,53 @@ export class LosslessAPI {
if (!playlist) throw new Error('Playlist not found');
const tracks = (tracksSection?.items || []).map(i => this.prepareTrack(i.item || i));
let tracks = (tracksSection?.items || []).map(i => this.prepareTrack(i.item || i));
// Handle pagination if there are more tracks
if (playlist.numberOfTracks > tracks.length) {
let offset = tracks.length;
const SAFE_MAX_TRACKS = 10000;
while (tracks.length < playlist.numberOfTracks && tracks.length < SAFE_MAX_TRACKS) {
try {
const nextResponse = await this.fetchWithRetry(`/playlist/?id=${id}&offset=${offset}`);
const nextJson = await nextResponse.json();
const nextData = nextJson.data || nextJson;
let nextItems = [];
if (nextData.items) {
nextItems = nextData.items;
} else if (Array.isArray(nextData)) {
for (const entry of nextData) {
if (entry && typeof entry === 'object' && 'items' in entry && Array.isArray(entry.items)) {
nextItems = entry.items;
break;
}
}
}
if (!nextItems || nextItems.length === 0) break;
const preparedItems = nextItems.map(i => this.prepareTrack(i.item || i));
if (preparedItems.length === 0) break;
// Safeguard: If API ignores offset, it returns the first page again.
// Check if the first new item matches the very first track we have.
if (tracks.length > 0 && preparedItems[0].id === tracks[0].id) {
break;
}
tracks = tracks.concat(preparedItems);
offset += preparedItems.length;
} catch (error) {
console.error(`Error fetching playlist tracks at offset ${offset}:`, error);
break;
}
}
}
const result = { playlist, tracks };
await this.cache.set('playlist', id, result);