81 lines
1.8 KiB
TypeScript
81 lines
1.8 KiB
TypeScript
import { useLocalCache } from '~/utils/cache';
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const KEY = 'video:';
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const cache = useLocalCache();
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const read = (id: string | null | undefined): number => {
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if (!id) {
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return 0;
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}
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try {
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const time = Number(cache.get<number>(`${KEY}${id}`));
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return Number.isFinite(time) && time > 0 ? time : 0;
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} catch {
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return 0;
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}
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};
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const save = (id: string | null | undefined, time: number): void => {
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if (!id || !Number.isFinite(time) || time <= 0) {
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return;
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}
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cache.set(`${KEY}${id}`, time, 3600 * 24);
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};
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const clear = (id: string | null | undefined): void => {
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if (!id) {
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return;
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}
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cache.remove(`${KEY}${id}`);
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};
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const nearEnd = (
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target: Pick<HTMLMediaElement, 'currentTime' | 'duration'> | null,
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pad: number = 5,
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): boolean => {
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if (!target) {
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return false;
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}
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const duration = target.duration;
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if (!Number.isFinite(duration) || duration <= 0) {
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return false;
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}
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const time =
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Number.isFinite(target.currentTime) && target.currentTime > 0 ? target.currentTime : 0;
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return duration - time <= pad;
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};
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const clampResumeTime = (
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target: Pick<HTMLMediaElement, 'duration' | 'seekable'>,
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time: number,
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): number => {
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if (!Number.isFinite(time) || time <= 0) {
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return 0;
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}
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const seekable = target.seekable;
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if (seekable && seekable.length > 0) {
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const last = seekable.length - 1;
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const start = seekable.start(last);
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const end = seekable.end(last);
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if (!Number.isFinite(start) || !Number.isFinite(end) || end <= start) {
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return 0;
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}
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return Math.min(Math.max(time, start), end);
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}
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const duration = target.duration;
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if (Number.isFinite(duration) && duration > 0) {
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return Math.min(time, Math.max(duration - 0.25, 0));
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}
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return time;
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};
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export { clampResumeTime, clear, nearEnd, read, save };
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