// 格式化浮点数
export function formatFloat(number: string | number, precision = 2) {
  number = parseFloat(number);
  if (isNaN(number) && !number) return number;
  return number.toFixed(precision);
}
export function fixFloat(number: number, digit = 2) {
  const m = 10 ** digit;
  return (Math.round(number * m, 10) / m).toFixed(digit);
}
export function toMoney(num: string | number) {
  num = fixFloat(num);
  if (isNaN(num)) return num;
  const [i, f] = String(num).split('.');
  return `${parseFloat(i).toLocaleString()}.${f}`;
}

// 格式化日期
export function formatDate(date: string | number | Date, fmt = 'yyyy-MM-dd hh:mm:ss') {
  const that = new Date(date);
  const o = {
    'M+': that.getMonth() + 1, // 月份
    'd+': that.getDate(), // 日
    'h+': that.getHours(), // 小时
    'm+': that.getMinutes(), // 分
    's+': that.getSeconds(), // 秒
    'q+': Math.floor((that.getMonth() + 3) / 3), // 季度
    S: that.getMilliseconds(), // 毫秒
  };
  if (/(y+)/.test(fmt)) {
    fmt = fmt.replace(RegExp.$1, (`${that.getFullYear()}`).substr(4 - RegExp.$1.length));
  }
  for (const k in o) {
    if (new RegExp(`(${k})`).test(fmt)) {
      fmt = fmt.replace(RegExp.$1, (RegExp.$1.length === 1) ? (o[k]) : ((`00${o[k]}`).substr((`${o[k]}`).length)));
    }
  }
  return fmt;
}


export function calculateDateIntervals(StartTime1: string | number | Date, EndTime2: string | number | Date) {
  const currentDate = new Date();
  let startDate, endDate;

  const dateNow = currentDate.getDate();

  if (!StartTime1 && !EndTime2) {
    startDate = new Date(currentDate.getFullYear(), currentDate.getMonth() - 11, dateNow);
    endDate = currentDate;
    
    const monthList = [];
    const type = 2;

    for (let month = 0; month <=11; month++) {
      const date = new Date(currentDate.getFullYear(), currentDate.getMonth() - month, dateNow);
      monthList.push(date.toISOString().slice(0, 7));
    }
    const reversedArray = [];
  
    for (let i = monthList.length - 1; i >= 0; i--) {
      reversedArray.push(monthList[i]);
    }

  // console.log(reversedArray)
    return { type, list: reversedArray };

  } else {
    startDate = new Date(StartTime1);
    endDate = new Date(EndTime2);
  }

  const timeDiff = endDate.getTime() - startDate.getTime();
  const oneDay = 24 * 60 * 60 * 1000; // 一天的毫秒数
  const daysDiff = Math.floor(timeDiff / oneDay);

  if (daysDiff < 15) {
    const dateList = [];
    const type = 3;

    for (let i = 0; i <= daysDiff; i++) {
      const day = new Date(startDate.getTime() + i * oneDay);
      dateList.push(day.toISOString().split('T')[0]);
    }

    return { type, list: dateList };
  } else if (daysDiff <= 365) {
    const monthList = [];
    const type = 2;

    const startYear = startDate.getFullYear();
    const endYear = endDate.getFullYear();
    const startMonth = startDate.getMonth();
    const endMonth = endDate.getMonth();

  for (let year = startYear; year <= endYear; year++) {
    const monthStart = (year === startYear) ? startMonth : 0;
    const monthEnd = (year === endYear) ? endMonth : 11;

    for (let month = monthStart; month <= monthEnd; month++) {
      monthList.push(`${year}-${String(month + 1).padStart(2, '0')}`);
    }
  }
  // const reversedArray = [];
  
  // for (let i = monthList.length - 1; i >= 0; i--) {
  //   reversedArray.push(monthList[i]);
  // }
  console.log(monthList)
    return { type, list: monthList };
  } else {
        const yearList = [];
    const type = 1;

    for (let year = startDate.getFullYear(); year <= endDate.getFullYear(); year++) {
      yearList.push(year.toString());
    }

    return { type, list: yearList };
  }
  
}

export function getPreviousMonths() {
  const currentDate = new Date();
  const previousMonths = [];
  for (let i = 0; i < 5; i++) {
    const previousMonth = new Date(currentDate.getFullYear(), currentDate.getMonth() - (i+2), 1);
    previousMonths.push(previousMonth.toLocaleString('default', { month: 'long', year: 'numeric' }));
  }

  return previousMonths.reverse();

}