import getTime from '../getTime/index'
import requiredArgs from '../_lib/requiredArgs/index'

/**
 * @name getUnixTime
 * @category Timestamp Helpers
 * @summary Get the seconds timestamp of the given date.
 *
 * @description
 * Get the seconds timestamp of the given date.
 *
 * ### v2.0.0 breaking changes:
 *
 * - [Changes that are common for the whole library](https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#Common-Changes).
 *
 * @param {Date|Number} date - the given date
 * @returns {Number} the timestamp
 * @throws {TypeError} 1 argument required
 *
 * @example
 * // Get the timestamp of 29 February 2012 11:45:05 CET:
 * const result = getUnixTime(new Date(2012, 1, 29, 11, 45, 5))
 * //=> 1330512305
 */
export default function getUnixTime(dirtyDate: Date | number): number {
  requiredArgs(1, arguments)

  return Math.floor(getTime(dirtyDate) / 1000)
}
