/**
 * Computes the estimated next periodic inform date.
 *
 * @param lastPeriodicInformAt - Date of the last periodic inform
 * @param periodicInformInterval - Interval in seconds (from device parameter)
 * @returns The estimated next connection date, or null if cannot be computed
 */
export function computeNextPeriodicInform(
  lastPeriodicInformAt: Date | string | null | undefined,
  periodicInformInterval: number | string | null | undefined
): Date | null {
  if (!lastPeriodicInformAt) return null

  const intervalSeconds = typeof periodicInformInterval === 'string'
    ? parseInt(periodicInformInterval, 10)
    : periodicInformInterval

  if (!intervalSeconds || intervalSeconds <= 0) return null

  const lastDate = lastPeriodicInformAt instanceof Date
    ? lastPeriodicInformAt
    : new Date(lastPeriodicInformAt)

  if (isNaN(lastDate.getTime())) return null

  return new Date(lastDate.getTime() + intervalSeconds * 1000)
}