const MILLISECONDS_IN_SECOND = 1000
const SECONDS_IN_MINUTE = 60
const MINUTES_IN_HOUR = 60

/**
 * Returns the difference between the first date and the second in hours
 * @param firstDate
 * @param secondDate
 */
export function getDiffDateInHours(firstDate: Date, secondDate: Date): number {
  const diff_in_time = Math.abs(firstDate.getTime() - secondDate.getTime())
  return Math.floor(diff_in_time / (MILLISECONDS_IN_SECOND * SECONDS_IN_MINUTE * MINUTES_IN_HOUR))
}