    import Zondy from './Zondy'
    import { defaultValue } from '../util'

    /**
     * 颜色类
     * @classdesc 颜色类
     * @class Color
     * @param {Number} [red = 0.0] 红色
     * @param {Number} [green = 0.0] 绿色
     * @param {Number} [blue = 0.0] 蓝色
     * @param {Number} [alpha = 1.0] 透明度
     */
    class Color {
      constructor(red, green, blue, alpha) {
        this.red = defaultValue(red, 0.0)
        this.green = defaultValue(green, 0.0)
        this.blue = defaultValue(blue, 0.0)
        this.alpha = defaultValue(alpha, 1.0)
      }

      /**
       * 转为cesium的rgba值
       * @return {Object} cesium的rgba值
       */
      toCesiumRGB() {
        return {
          red: this.red / 255,
          green: this.green / 255,
          blue: this.blue / 255,
          alpha: this.alpha
        }
      }

      /**
       * 转为rgba字符串
       * @return {String} rgba字符串
       */
      toCssRGBAString() {
        return `rgba(${this.red},${this.green},${this.blue},${this.alpha})`
      }

      /**
       * 转为rgb字符串
       * @return {String} rgb字符串
       */
      toCssRGBString() {
        return `rgb(${this.red},${this.green},${this.blue})`
      }

      /**
       * 克隆字符串
       * @return {Color} 颜色对象
       */
      clone() {
        return new Color(this.red, this.green, this.blue, this.alpha)
      }

      /**
       * 导出为JSON对象
       * @return {Object} JSON对象
       */
      toJSON() {
        return {
          red: this.red,
          green: this.green,
          blue: this.blue,
          alpha: this.alpha
        }
      }
    }

    /**
     * 将rgb或rgba字符串转成一个Color对象
     * @param {String} rgb rgb或rgba字符
     * @return {Color} Color对象
     */
    Color.fromRGBString = function (rgb) {
      if (Color.isRGB(rgb)) {
        if (rgb.indexOf('rgba') > -1 || rgb.indexOf('RGBA') > -1) {
          let cssString = rgb.substring(5, rgb.length - 1)
          cssString = cssString.split(',')
          if (cssString.length === 4) {
            return new Color(
              Number(cssString[0]),
              Number(cssString[1]),
              Number(cssString[2]),
              Number(cssString[3])
            )
          }
        } else if (rgb.indexOf('rgb') > -1 || rgb.indexOf('RGB') > -1) {
          let cssString = rgb.substring(4, rgb.length - 1)
          cssString = cssString.split(',')
          if (cssString.length === 3) {
            return new Color(
              Number(cssString[0]),
              Number(cssString[1]),
              Number(cssString[2])
            )
          }
        }
      }

      return undefined
    }

    /**
     * 将hex字符串转成一个Color对象
     * @param {String} hex hex字符串
     * @return {Color} Color对象
     */
    Color.fromHexString = function (hex) {
      if (Color.isHex(hex)) {
        const rgb = Color.hexToRgb(hex)
        if (rgb.indexOf('rgba') > -1 || rgb.indexOf('RGBA') > -1) {
          return Color.fromRGBString(rgb)
        } else if (rgb.indexOf('rgb') > -1 || rgb.indexOf('RGB') > -1) {
          return Color.fromRGBString(rgb)
        }
      }
      return undefined
    }

    /**
     * 将json转成一个Color对象
     * @param {String} json json对象
     * @return {Color} Color对象
     */
    Color.fromJSON = function (json) {
      json = defaultValue(json, {})
      const red = defaultValue(json.red, 255.0)
      const green = defaultValue(json.green, 255.0)
      const blue = defaultValue(json.blue, 255.0)
      const alpha = defaultValue(json.alpha, 1.0)
      return new Color(red, green, blue, alpha)
    }

    /**
     * 将hex字符串转成一个rgb字符串
     * @param {String} hex hex字符串
     * @return {String} rgb字符串
     */
    Color.hexToRgb = function (hex) {
      // 3位、4位、6位以及8位hex值
      const reg = /^#([0-9A-Fa-f]{3}|[0-9A-Fa-f]{4}|[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$/
      // 格式判断
      if (!reg.test(hex)) {
        return
      }
      let newStr = hex.toLowerCase().replace(/\#/g, '')
      let length = newStr.length
      // 三位或四位扩充为8位
      if (length === 3 || length === 4) {
        let t = ''
        for (let i = 0; i < length; i++) {
          t += newStr.slice(i, i + 1).concat(newStr.slice(i, i + 1))
        }
        newStr = t
        length = newStr.length
      }
      // 将字符串分隔，两个两个的分隔
      const arr = []
      for (let i = 0; i < length; i += 2) {
        const s = newStr.slice(i, i + 2)
        arr.push(parseInt(`0x${s}`))
      }
      // 生成rgb字符串
      let rgb
      if (length === 6) {
        rgb = `rgb(${arr.join(',')})`
      } else if (length === 8) {
        rgb = 'rgba('
        for (let i = 0; i < 3; i++) {
          rgb += `${arr[i]},`
        }
        rgb += `${arr[3] / 255})`
      }
      return rgb
    }

    /**
     * 将rgb字符串转成一个hex字符串
     * @param {String} rgb rgb字符串
     * @return {String} hex字符串
     */
    Color.rgbToHex = function (rgb) {
      // 格式校验
      const reg = /^(rgb|rgba|RGB|RGBA)/
      if (!reg.test(rgb)) {
        return
      }

      let arr
      if (rgb.indexOf('rgba') > -1 || rgb.indexOf('RGBA') > -1) {
        arr = rgb.slice(5, rgb.length - 1).split(',')
      } else {
        arr = rgb.slice(4, rgb.length - 1).split(',')
      }

      function get16Str(number) {
        let t = Number(number).toString(16)
        if (t === '0') {
          // 如果为“0”的话，需要补0操作,否则只有5位数
          t += '0'
        }
        // 如果长度为1的话，需要补0操作,否则只有5位数
        if (t.length === 1) {
          t = `0${t}`
        }
        return t
      }

      let hex = '#'
      for (let i = 0; i < 3; i++) {
        hex += get16Str(arr[i])
      }
      // 透明度为0-1
      if (arr.length === 4) {
        hex += get16Str(Number(arr[3]) * 255)
      }
      return hex
    }
    /**
     * 转换为color对象
     * @param {Color|String} hex字符串或rgba字符串或Color对象
     * @return {Color} 转换后的颜色对象
     */
    Color.fromColor = function (color) {
      if (typeof color === 'string') {
        if (Color.isHex(color)) {
          return Color.fromHexString(color)
        } else if (Color.isRGB(color)) {
          return Color.fromRGBString(color)
        }
      } else if (color instanceof Color) {
        return color
      } else if (color instanceof Object) {
        return Color.fromJSON(color)
      } else {
        return new Color()
      }
    }

    /**
     * 判断是否是hex字符串
     * @param {String} hex hex字符串
     * @return {Boolean} 是否是hex字符串
     */
    Color.isHex = function (hex) {
      // 3位、4位、6位以及8位hex值
      const reg = /^#([0-9A-Fa-f]{3}|[0-9A-Fa-f]{4}|[0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$/
      // 格式判断
      return reg.test(hex)
    }

    /**
     * 判断是否是rgb字符串
     * @param {String} rgb rgb字符串
     * @return {Boolean} 是否是rgb字符串
     */
    Color.isRGB = function (rgb) {
      // 格式校验
      const reg = /^(rgb|rgba|RGB|RGBA)/
      return reg.test(rgb)
    }

    Zondy.Color = Color
    export default Color