guh

webui/src/controls/persistence.js

@@ -0,0 +1,36 @@
+import { CONTROL_SETTINGS_COOKIE, CONTROL_SETTINGS_MAX_AGE } from './constants.js';
+
+function parseCookieValue(raw) {
+  try {
+    const decoded = decodeURIComponent(raw ?? '');
+    return JSON.parse(decoded);
+  } catch (error) {
+    console.warn('Failed to parse control settings cookie', error); // eslint-disable-line no-console
+    return null;
+  }
+}
+
+export function loadControlSettings() {
+  if (typeof document === 'undefined') return null;
+  const cookiePrefix = `${CONTROL_SETTINGS_COOKIE}=`;
+  const entry = document.cookie
+    .split(';')
+    .map((part) => part.trim())
+    .find((part) => part.startsWith(cookiePrefix));
+  if (!entry) return null;
+  const raw = entry.substring(cookiePrefix.length);
+  return parseCookieValue(raw);
+}
+
+export function saveControlSettings(settings) {
+  if (typeof document === 'undefined') return false;
+  try {
+    const serialized = encodeURIComponent(JSON.stringify(settings ?? {}));
+    const cookie = `${CONTROL_SETTINGS_COOKIE}=${serialized}; path=/; max-age=${CONTROL_SETTINGS_MAX_AGE}; samesite=strict`;
+    document.cookie = cookie;
+    return true;
+  } catch (error) {
+    console.warn('Failed to write control settings cookie', error); // eslint-disable-line no-console
+    return false;
+  }
+}