import moment from 'moment';

export const fixedZero = (val: number) => {
 return val * 1 < 10 ? `0${val}` : val;
};

export const getTimeDistance = (type: string) => {
 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 === 'todaytime') {
 now.setHours(0);
 now.setMinutes(0);
 now.setSeconds(0);
 const now1 = new Date();
 return [moment(now), moment(now1.getTime())];
 }

 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))];
 }

 if (type === 'month') {
 const year = now.getFullYear();
 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)];
 }

 if (type === 'nday30') {
 //近30天
 now.setHours(0);
 now.setMinutes(0);
 now.setSeconds(0);
 return [moment(now), moment(now.setDate(now.getDate() - 30))];
 }
 if (type === 'nday14') {
 //近14天
 now.setHours(0);
 now.setMinutes(0);
 now.setSeconds(0);
 return [moment(now), moment(now.setDate(now.getDate() - 14))];
 }
 if (type === 'nday7') {
 //近7天
 now.setHours(0);
 now.setMinutes(0);
 now.setSeconds(0);
 return [moment(now), moment(now.setDate(now.getDate() - 7))];
 }

 if (type === 'nyear') {
 //近一年,从今天向回退一年
 now.setHours(0);
 now.setMinutes(0);
 now.setSeconds(0);
 var d2 = new Date(now);
 d2.setFullYear(d2.getFullYear() - 1);
 d2.setDate(d2.getDate() - 1);
 return [moment(now), moment(d2)];
 }

 if (type === 'year') {
 //全年
 const year = now.getFullYear();
 return [moment(`${year}-01-01 00:00:00`), moment(`${year}-12-31 23:59:59`)];
 }

 return [];
};