// localStorage can throw (privacy modes, storage disabled, quota), so every
// access is guarded and falls back to "nothing stored".

/** The stored value of key, or null if there is none or storage is unavailable. */
export function readStored(key: string): string | null {
  try {
    return window.localStorage.getItem(key);
  } catch {
    return null;
  }
}

/** Stores value under key, if storage is available. */
export function writeStored(key: string, value: string): void {
  try {
    window.localStorage.setItem(key, value);
  } catch {
    /* preference just won't persist */
  }
}

// index.html reads the theme key too, before the app loads.
export const STORAGE_KEYS = {
  theme: 'job_search.theme',
  filtersOpen: 'job_search.filtersOpen',
} as const;