restructured preferences

src/lib/preferences/db-local-storage.ts

@@ -0,0 +1,37 @@
+import { browser } from '$app/environment';
+import { user_preferences } from '$lib/preferences/db-state';
+
+import type { UserPreferences } from '$lib/types';
+import { info, warn } from '$lib/utility/package/log';
+import { get } from 'svelte/store';
+
+const USER_PREFERENCE_KEY = 'USER_PREFERENCE' as const;
+
+export function save_preferences() {
+	if (!browser || !localStorage) {
+		warn('localStorage not available, skipping save');
+		return;
+	}
+
+	const preferences = get(user_preferences);
+	info(`Saving user preferences to localStorage`, preferences);
+	localStorage.setItem(USER_PREFERENCE_KEY, JSON.stringify(preferences));
+}
+
+export function load_preferences() {
+	if (!browser || !localStorage) {
+		warn('localStorage not available, skipping load');
+		return;
+	}
+	const data = localStorage.getItem(USER_PREFERENCE_KEY);
+
+	if (!data) {
+		info('No saved user preferences found');
+		return;
+	}
+
+	const preferences = JSON.parse(data) as UserPreferences;
+	user_preferences.edit(preferences);
+
+	info(`Loaded user preferences from localStorage`, preferences);
+}