Cleanup lib exports (#50)

src/lib/user-progress.ts

@@ -0,0 +1,63 @@
+import { persisted } from 'svelte-local-storage-store';
+import { get } from 'svelte/store';
+import { announce } from './_internal_/announce';
+import { audio_element } from './_internal_/audio-element';
+import { use_url } from './_internal_/safe-use-url';
+
+export interface UserProgress {
+	[key: string]: number;
+}
+
+const DEFAULT_USER_PROGRESS: UserProgress = {};
+
+/**
+ * User progress store
+ */
+const USER_PROGRESS_STORE = persisted<UserProgress>(
+	'USER_PROGRESS',
+	DEFAULT_USER_PROGRESS,
+);
+
+/**
+ * Saves user progress
+ */
+const save_user_progress = () => {
+	const audio = get(audio_element);
+	if (!audio?.src) return;
+
+	announce.info('saving progress: ', audio.src);
+
+	const pathname = use_url(audio.src).pathname;
+	const current_time = audio.currentTime;
+	USER_PROGRESS_STORE.update((prev) => ({
+		...prev,
+		[pathname]: current_time,
+	}));
+};
+
+/**
+ * Gets user progress for a given audio source
+ * @param  src - Audio source
+ */
+const get_user_progress = (src: string) => {
+	const pathname = use_url(src).pathname;
+
+	const store: UserProgress = get(USER_PROGRESS_STORE);
+
+	const value = store[pathname];
+
+	return value;
+};
+
+/**
+ * Clears user progress store
+ */
+const clear_user_progress = () =>
+	USER_PROGRESS_STORE.set(DEFAULT_USER_PROGRESS);
+
+export const user_progress = {
+	subscribe: USER_PROGRESS_STORE.subscribe,
+	get: get_user_progress,
+	clear: clear_user_progress,
+	save: save_user_progress,
+};