// localStorage key for "the devices.id row that belongs to THIS install".
// Reset on memory-wipe (NOT preserved) — a wiped install is conceptually a
// fresh install, so registering a new row is correct.

const KEY = 'chatapp.deviceRowId.v1';

export function getDeviceRowId(): string | null {
  try {
    const v = window.localStorage.getItem(KEY);
    return v && v.length > 0 ? v : null;
  } catch {
    return null;
  }
}

export function setDeviceRowId(id: string): void {
  try {
    window.localStorage.setItem(KEY, id);
  } catch {
    /* quota */
  }
}

export function clearDeviceRowId(): void {
  try {
    window.localStorage.removeItem(KEY);
  } catch {
    /* no-op */
  }
}