chrisandClaude Opus 5.5
68ec5a8d99
Feed and profile cards now show one slim line (small artwork, title, artist, Open button) with the progress bar and reactions. The arrow opens the rest: album, your other services, Share, and lyrics. Lyrics come from LRCLIB (open source; LRCLIB_URL can point at a self-hosted copy, or be empty to turn lyrics off). The server looks each song up once and caches it, including misses (retried after a week). Timed lyrics follow along with the song; otherwise the first lines show with "All lyrics". Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
48 lines
1.5 KiB
TypeScript
48 lines
1.5 KiB
TypeScript
/** One line of time-synced lyrics; empty text is an instrumental gap. */
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export interface LyricLine {
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timeMs: number;
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text: string;
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}
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export interface LyricsDTO {
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/** Lines with timestamps, when the song has synced lyrics. */
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synced: LyricLine[] | null;
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/** Plain text, when there are no synced lyrics (or as a fallback). */
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plain: string | null;
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instrumental: boolean;
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/** Where they came from, for attribution. */
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source: { name: string; url: string };
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}
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const TIME_TAG = /\[(\d{1,3}):(\d{1,2}(?:\.\d{1,3})?)\]/g;
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/**
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* Parse LRC ("[01:23.45] words"). A line may carry several time tags; tags
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* that aren't times (like [ar:Artist]) are skipped. Sorted by time.
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*/
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export function parseLrc(lrc: string): LyricLine[] {
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const lines: LyricLine[] = [];
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for (const raw of lrc.split(/\r?\n/)) {
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const times = [...raw.matchAll(TIME_TAG)];
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if (times.length === 0) continue;
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const text = raw.replace(TIME_TAG, '').trim();
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for (const [, min, sec] of times) lines.push({ timeMs: Math.round((Number(min) * 60 + Number(sec)) * 1000), text });
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}
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return lines.sort((a, b) => a.timeMs - b.timeMs);
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}
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/** Index of the line being sung at `positionMs`, or -1 before the first one. */
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export function currentLyricIndex(lines: LyricLine[], positionMs: number): number {
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let lo = 0;
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let hi = lines.length - 1;
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let found = -1;
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while (lo <= hi) {
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const mid = (lo + hi) >> 1;
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if (lines[mid]!.timeMs <= positionMs) {
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found = mid;
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lo = mid + 1;
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} else hi = mid - 1;
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}
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return found;
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}
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