export const calcDate = (date1, date2) => {
  let date3 = date2 - date1;

  let days = Math.floor(date3 / (24 * 3600 * 1000))

  let leave1 = date3 % (24 * 3600 * 1000) //计算天数后剩余的毫秒数
  let hours = Math.floor(leave1 / (3600 * 1000))

  let leave2 = leave1 % (3600 * 1000) //计算小时数后剩余的毫秒数
  let minutes = Math.floor(leave2 / (60 * 1000))

  let leave3 = leave2 % (60 * 1000) //计算分钟数后剩余的毫秒数
  let seconds = Math.round(date3 / 1000)
  return {
    leave1,
    leave2,
    leave3,
    days: days,
    hours: hours,
    minutes: minutes,
    seconds: seconds,
  }
}

/**
 * 日期格式化
 */
export function dateFormat(date, format) {
  format = format || 'yyyy-MM-dd hh:mm:ss';
  if (date !== 'Invalid Date') {
    let o = {
      "M+": date.getMonth() + 1, //month
      "d+": date.getDate(), //day
      "h+": date.getHours(), //hour
      "m+": date.getMinutes(), //minute
      "s+": date.getSeconds(), //second
      "q+": Math.floor((date.getMonth() + 3) / 3), //quarter
      "S": date.getMilliseconds() //millisecond
    }
    if (/(y+)/.test(format)) format = format.replace(RegExp.$1,
      (date.getFullYear() + "").substr(4 - RegExp.$1.length));
    for (let k in o)
      if (new RegExp("(" + k + ")").test(format))
        format = format.replace(RegExp.$1,
          RegExp.$1.length === 1 ? o[k] :
          ("00" + o[k]).substr(("" + o[k]).length));
    return format;
  }
  return '';

}
/**
 * 获取上月第一天和下月最后一天
 * type 1为 [yyyy-MM-dd,yyyy-MM-dd]
 * type 2为 [yyyy-MM-dd 00:00:00,yyyy-MM-dd 23:59:59]
 * type为空默认2
 */
export function defaultDate(type) {
  type = type ? type : 2
  const date = new Date();
  const startDate = new Date(date.getFullYear(), date.getMonth() - 1, 1);
  const endDate = new Date(date.getFullYear(), date.getMonth() + 2, 0);
  if (type == 1) {
    return [
      dateFormat(startDate, "yyyy-MM-dd"),
      dateFormat(endDate, "yyyy-MM-dd")
    ];
  }else if (type == 3){
    return[
      dateFormat(new Date(date.getFullYear(), date.getMonth(), date.getDate()), "yyyy-MM-dd"),
      dateFormat(new Date((date.getMonth() + 1) === 12?date.getFullYear()+1:date.getFullYear(), (date.getMonth() + 1), date.getDate()), "yyyy-MM-dd")
    ];
  }else {
    return [
      dateFormat(startDate, "yyyy-MM-dd") + " 00:00:00",
      dateFormat(endDate, "yyyy-MM-dd") + " 23:59:59"
    ];
  }
}
/**
 * 获取当天
 * [yyyy-MM-dd,yyyy-MM-dd]
 */
 export function defaultDate2() {
  const date = new Date();
  return [
    dateFormat(date, "yyyy-MM-dd"),
    dateFormat(date, "yyyy-MM-dd")
  ];
}
/**
 * 获取本月第一天和本月最后一天
 * [yyyy-MM-dd,yyyy-MM-dd]
 */
export function defaultDate3() {
  const date = new Date();
  const startDate = new Date(date.getFullYear(), date.getMonth(), 1);
  const endDate = new Date(date.getFullYear(), date.getMonth()+1, 0);
  return [
    dateFormat(startDate, "yyyy-MM-dd"),
    dateFormat(endDate, "yyyy-MM-dd")
  ];
}
// 获得当前日期
export function getCurrentDate(type = 'dateTime') {
  const date = new Date();
  const currentDate = new Date(date.getFullYear(), date.getMonth(), date.getDate());
  if (type == 'date') {
    return dateFormat(currentDate, 'yyyy-MM-dd')
  } else if (type == 'dateTime') {
    return dateFormat(date, 'yyyy-MM-dd hh:mm:ss')
  }
}
export function getYearDate(){
  const date = new Date();
  return date.getFullYear()
}