import * as moment from 'moment';

import { Information } from '../interfaces/information';
import { TicketDto } from '../interfaces/ticket/ticket.dto';
import { getTicketState } from './state';

export function getTicketInformation(ticket: TicketDto): Information {
  const ticketInfo = getTicketState(ticket);

  const expireAt = ticket.dateUntil;
  const countdown = getDiffInSecond(expireAt);

  const validationExpireAt = ticket?.lastValidValidation?.validUntil;
  const validationCountdown = getDiffInSecond(validationExpireAt);

  return {
    state: ticketInfo.state,
    expireAt,
    countdown,
    validationExpireAt,
    validationCountdown,
    errors: ticketInfo.errors,
  };
}

function getDiffInSecond(expireAt?: Date): number | undefined {
  const now = Date.now();
  if (!expireAt) {
    return undefined;
  }
  const countDown = moment(expireAt).diff(now, 'seconds');
  return countDown < 0 ? 0 : countDown;
}