Convert String Date

/**
 * Converts a string date from "dd/mm/yyyy hh:mm" format to "yyyy-mm-ddThh:mm" format.
 * If the input string is empty, it returns an empty string.
 * If the input string does not match the expected format, it throws an error.
 *
 * @param {string} dateString - The date string to be converted. Must be in "dd/mm/yyyy hh:mm" format.
 * @returns {string} - The converted date string in "yyyy-mm-ddThh:mm" format.
 * @throws {Error} - Throws an error if the input string does not match the expected format.
 *
 * @example
 * // returns "2022-01-01T12:00"
 * convertStringDate("01/01/2022 12:00")
 *
 * @example
 * // returns ""
 * convertStringDate("")
 *
 * @example
 * // throws Error: Invalid date format
 * convertStringDate("invalid date string")
 */
export const convertStringDate = (dateString: string): string => {
  if (dateString === '') return dateString
  if (!/^\d{2}\/\d{2}\/\d{4} \d{2}:\d{2}$/gi.test(dateString))
    throw new Error(
      'Invalid date format. It should be in the form: `dd/mm/yyyy hh:mm`',
    )

  const [shortDate, shortTime = ''] = dateString.split(' ')
  const [days, months, years] = shortDate.split('/')
  const [hours = 0, minutes = 0] = shortTime.split(':')
  return `${years}-${months}-${days}T${hours}:${minutes}`
}

/**
 * @description Takes a string or a Date object. If it's a string, it assumes UTC string format (YYYY-MM-DDTHH:MM)
 * @param {(string | Date)} date
 * @returns {Date}  {Date}
 */
export const datification = (date: string | Date): Date =>
  typeof date === 'string' ? new Date(date) : date