import moment from 'moment';

export function fixedZero(val) {
  return val * 1 < 10 ? `0${val}` : val;
}
export function getTimeDistance(type) {
  const now = new Date();
  const oneDay = 1000 * 60 * 60 * 24;

  if (type === 'today') {
    now.setHours(0);
    now.setMinutes(0);
    now.setSeconds(0);
    return [moment(now), moment(now.getTime() + (oneDay - 1000))];
  }

  if (type === 'week') {
    let day = now.getDay();
    now.setHours(0);
    now.setMinutes(0);
    now.setSeconds(0);

    if (day === 0) {
      day = 6;
    } else {
      day -= 1;
    }

    const beginTime = now.getTime() - day * oneDay;
    return [moment(beginTime), moment(beginTime + (7 * oneDay - 1000))];
  }

  const year = now.getFullYear();

  if (type === 'month') {
    const month = now.getMonth();
    const nextDate = moment(now).add(1, 'months');
    const nextYear = nextDate.year();
    const nextMonth = nextDate.month();
    return [
      moment(`${year}-${fixedZero(month + 1)}-01 00:00:00`),
      moment(moment(`${nextYear}-${fixedZero(nextMonth + 1)}-01 00:00:00`).valueOf() - 1000),
    ];
  }

  return [moment(`${year}-01-01 00:00:00`), moment(`${year}-12-31 23:59:59`)];
}
