/** 格式化文件大小, 最小单位为Byte
 * @param bytes 字节数
 * @param fixed 保留的小数位, 默认为`1`
 */
export const formatFileSize = (bytes: number, fixed = 1) => {
  const units = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']
  let number = bytes
  let unitIndex = 0
  while (number >= 1024) {
    number /= 1024
    unitIndex++
  }
  return `${Math.round(number * (10 ** fixed)) / (10 ** fixed)}${units[unitIndex]}`
}
/**
 * 格式化百分数为带`%`的字符串
 * @param percent 百分数
 * @param fixed 保留的小数位, 默认为`1`
 */
export const formatPercent = (percent: number, fixed = 1) => `${Math.round(percent * 100 * (10 ** fixed)) / (10 ** fixed)}%`
/** 格式化时长为`H:mm:ss.F`, 不足1小时则为`mm:ss.F`
 * @param time 时长
 * @param fixed 保留的小数位(毫秒), 默认不保留
 */
export const formatDuration = (time: number, fixed = 0) => {
  const second = (time % 60).toFixed(fixed)
  const minute = (Math.trunc(time / 60) % 60).toString()
  const hour = Math.trunc(time / 3600).toString()
  const secondTotalLength = fixed === 0 ? 2 : 3 + fixed
  if (hour === '0') {
    return `${minute.padStart(2, '0')}:${second.padStart(secondTotalLength, '0')}`
  }
  return `${hour}:${minute.padStart(2, '0')}:${second.padStart(secondTotalLength, '0')}`
}
const formatCountData = (count: number | string) => {
  if (typeof count === 'string') {
    count = parseInt(count)
  }
  if (count >= 1e8) {
    return {
      number: (Math.round(count / 1e7) / 10).toString(),
      unit: '亿',
    }
  }
  if (count >= 1e4) {
    return {
      number: (Math.round(count / 1e3) / 10).toString(),
      unit: '万',
    }
  }
  return {
    number: count.toString(),
    unit: '',
  }
}
/** 格式化数量, 单位取值为万或亿, 小于1万时无单位, 有单位时保留1位小数
 * @param count 数量
 * @param minLength 数字部分的最短长度, 不足时用 `0` 补齐
 */
export const formatCount = (count: number | string, minLength = 0) => {
  if (count === undefined || count === null) {
    return '0'
  }
  const { number, unit } = formatCountData(count)
  return `${number.padStart(minLength, '0')}${unit}`
}
/**
 * 根据总量给当前数字添加前缀 `0`, 方便排序
 * @param number 数字
 * @param total 总量
 */
export const formatNumber = (number: number, total: number) => {
  if (Number.isNaN(number)) {
    return null
  }
  const length = Math.log10(total) + 1
  const numberText = number.toString()
  const decimalLength = numberText.length - Math.trunc(number).toString().length
  return numberText.padStart(length + decimalLength, '0')
}
/**
 * 格式化日期为`YYYY-MM-DD`
 * @param date 日期对象
 */
export const formatDate = (date: Date) => `${date.getFullYear()}-${(date.getMonth() + 1).toString().padStart(2, '0')}-${(date.getDate()).toString().padStart(2, '0')}`
/** 格式化文件名, 过滤掉 Windows 不允许的字符
 * @param filename 文件名
 * @param replacement 填充字符, 被过滤掉的字符将用此填充字符替代, 默认为空
 */
export const formatFilename = (filename: string, replacement = '') => filename.replace(/[\/\\:\*\?"<>\|]/g, replacement)
/** `formatFilename`的别名 (兼容v1) */
export const escapeFilename = formatFilename