mirror of
https://github.com/Psychotoxical/psysonic.git
synced 2026-07-22 15:25:46 +00:00
Frank Stellmacher
dcf3dd98e0
Four pure helpers move out of playerStore: normalizeAnalysisTrackId, sameQueueTrackId, queuesStructuralEqual, shallowCloneQueueTracks. Adds focused unit tests for the stream:-prefix normalization and the no-op detection that prevents unnecessary queue rewrites. Behaviour preserved verbatim. playerStore 3618 → 3598 LOC.
38 lines
1.4 KiB
TypeScript
38 lines
1.4 KiB
TypeScript
import type { Track } from '../store/playerStore';
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/**
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* Strip the `stream:` prefix that some Rust events attach to track ids when
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* they're routed through the HTTP source. Both forms identify the same track,
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* so equality and structural-diff checks need to normalize first.
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*/
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export function normalizeAnalysisTrackId(trackId?: string | null): string | null {
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if (!trackId) return null;
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if (trackId.startsWith('stream:')) return trackId.slice('stream:'.length);
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return trackId;
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}
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/** Compare track ids across `stream:` / bare Subsonic forms. */
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export function sameQueueTrackId(a: string | undefined | null, b: string | undefined | null): boolean {
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if (a == null || b == null) return false;
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const na = normalizeAnalysisTrackId(a) ?? a;
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const nb = normalizeAnalysisTrackId(b) ?? b;
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return na === nb;
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}
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/**
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* Same-length + same-ids check. Used to skip no-op queue rewrites that would
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* otherwise reset selection / scroll / drag-source state in subscribers.
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*/
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export function queuesStructuralEqual(a: Track[], b: Track[]): boolean {
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if (a.length !== b.length) return false;
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for (let i = 0; i < a.length; i++) {
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if (!sameQueueTrackId(a[i]?.id, b[i]?.id)) return false;
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}
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return true;
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}
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/** One-level clone so callers can mutate per-track fields without aliasing state. */
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export function shallowCloneQueueTracks(queue: Track[]): Track[] {
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return queue.map(t => ({ ...t }));
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}
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