Ollie Taylor
91 lines
2.2 KiB
TypeScript
91 lines
2.2 KiB
TypeScript
import { browser } from '$app/environment';
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import { audio, type AudioLoadOptions } from '$lib/context/audio';
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import { error, info, warn } from '$lib/utility/package/log';
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export type EpisodeProgress = {
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current_time: number;
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};
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const episode_progress_map = new Map<string, EpisodeProgress>();
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function stash_episode() {
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return audio.subscribe((state) => {
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info('saving progress: ', state.src);
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if (!state.src) return;
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episode_progress_map.set(state.src, { current_time: state.current_time });
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save_all();
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})();
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}
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function use_episode(src: string): Pick<AudioLoadOptions, 'start_at'> | null {
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const progress = episode_progress_map.get(src);
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if (!progress) return null;
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info('found saved progress: ', progress);
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return { start_at: progress.current_time };
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}
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type SavedEpisodeProgress = EpisodeProgress & { src: string };
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const EPISODE_PROGRESS_KEY = 'EPISODE_PROGRESS' as const;
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function save_all() {
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if (!browser || !localStorage) {
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warn('localStorage not available, skipping save');
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return;
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}
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const items = [...episode_progress_map];
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const episodes = items.reduce((prev, [src, progress]) => {
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return [...prev, { src, ...progress }];
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}, [] as SavedEpisodeProgress[]);
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info(`Saving progress for ${episodes.length} episodes to localStorage`, episodes);
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localStorage.setItem(EPISODE_PROGRESS_KEY, JSON.stringify(episodes));
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}
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function load_all() {
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if (!browser || !localStorage) {
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warn('localStorage not available, skipping load');
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return;
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}
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const data = localStorage.getItem(EPISODE_PROGRESS_KEY);
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if (!data) {
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info('No saved episode progress found');
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return;
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}
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const episodes = JSON.parse(data) as SavedEpisodeProgress[];
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try {
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episodes.forEach(({ src, ...progress }) => {
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episode_progress_map.set(src, progress);
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});
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info(`Loaded ${episode_progress_map.size} episodes progress from localStorage`);
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} catch (e) {
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error('Error loading episode progress', e);
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return;
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}
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}
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function clear_all() {
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episode_progress_map.clear();
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save_all();
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}
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export const episode_progress = {
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episodes: {
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get: episode_progress_map.get,
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includes: episode_progress_map.has,
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forEach: episode_progress_map.forEach,
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map: [...episode_progress_map].map,
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},
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stash: stash_episode,
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use: use_episode,
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save_all,
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load_all,
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clear_all,
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};
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