const STORAGE_PREFIX = 'cmpp-platform-v2';

export function readLocalData<T>(key: string, fallback: T): T {
  if (typeof window === 'undefined') {
    return fallback;
  }

  const rawValue = window.localStorage.getItem(`${STORAGE_PREFIX}:${key}`);

  if (!rawValue) {
    return fallback;
  }

  try {
    return JSON.parse(rawValue) as T;
  } catch {
    return fallback;
  }
}

export function writeLocalData<T>(key: string, value: T) {
  if (typeof window === 'undefined') {
    return;
  }

  window.localStorage.setItem(`${STORAGE_PREFIX}:${key}`, JSON.stringify(value));
}

export function resetLocalData(key: string) {
  if (typeof window === 'undefined') {
    return;
  }

  window.localStorage.removeItem(`${STORAGE_PREFIX}:${key}`);
}