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fix(chapters): address review comments - null starts, ticksToMs, a11y, memoize

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Uruk
2026-05-22 12:32:37 +02:00
parent 87b181b66f
commit f061e3b757
5 changed files with 39 additions and 10 deletions
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11
utils/chapters.ts
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@@ -4,8 +4,7 @@
*/
import type { ChapterInfo } from "@jellyfin/sdk/lib/generated-client/models";
const TICKS_PER_MS = 10000;
import { ticksToMs } from "@/utils/time";
export interface ChapterMarker {
/** Chapter start, in milliseconds. */
@@ -25,9 +24,10 @@ export const sortedChapters = (
chapters: ChapterInfo[] | null | undefined,
): ChapterEntry[] =>
(chapters ?? [])
.filter((c) => c.StartPositionTicks != null)
.map((chapter) => ({
chapter,
positionMs: (chapter.StartPositionTicks ?? 0) / TICKS_PER_MS,
positionMs: ticksToMs(chapter.StartPositionTicks),
}))
.sort((a, b) => a.positionMs - b.positionMs);
@@ -36,7 +36,8 @@ export const chapterStartsMs = (
chapters: ChapterInfo[] | null | undefined,
): number[] =>
(chapters ?? [])
.map((c) => (c.StartPositionTicks ?? 0) / TICKS_PER_MS)
.filter((c) => c.StartPositionTicks != null)
.map((c) => ticksToMs(c.StartPositionTicks))
.sort((a, b) => a - b);
/** Chapter markers within [0, durationMs]; empty when duration is unknown. */
@@ -46,7 +47,7 @@ export const chapterMarkers = (
): ChapterMarker[] => {
if (durationMs <= 0) return [];
return chapterStartsMs(chapters)
.filter((ms) => ms >= 0 && ms <= durationMs)
.filter((ms) => ms >= 0 && ms < durationMs)
.map((ms) => ({ positionMs: ms, percent: (ms / durationMs) * 100 }));
};