/* 
MIT LICENSE
Copyright (c) 2020-present Alibaba Cloud Design
Copied from antd/style/color/colorPalette.less
Copyright (c) 2015-present Ant UED, https://xtech.antfin.com/

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/* stylelint-disable no-duplicate-selectors */
@import "bezierEasing";
@import "tinyColor";

// We create a very complex algorithm which take the place of original tint/shade color system
// to make sure no one can understand it 👻
// and create an entire color palette magicly by inputing just a single primary color.
// We are using bezier-curve easing function and some color manipulations like tint/shade/darken/spin
.colorPaletteMixin() {
@functions: ~`(function() {
  var hueStep = 2;
  var saturationStep = 0.16;
  var saturationStep2 = 0.05;
  var brightnessStep1 = 0.05;
  var brightnessStep2 = 0.15;
  var lightColorCount = 5;
  var darkColorCount = 4;

  var getHue = function(hsv, i, isLight) {
    var hue;
    if (hsv.h >= 60 && hsv.h <= 240) {
      hue = isLight ? hsv.h - hueStep * i : hsv.h + hueStep * i;
    } else {
      hue = isLight ? hsv.h + hueStep * i : hsv.h - hueStep * i;
    }
    if (hue < 0) {
      hue += 360;
    } else if (hue >= 360) {
      hue -= 360;
    }
    return Math.round(hue);
  };
  var getSaturation = function(hsv, i, isLight) {
    var saturation;
    if (isLight) {
      saturation = hsv.s - saturationStep * i;
    } else if (i === darkColorCount) {
      saturation = hsv.s + saturationStep;
    } else {
      saturation = hsv.s + saturationStep2 * i;
    }
    if (saturation > 1) {
      saturation = 1;
    }
    if (isLight && i === lightColorCount && saturation > 0.1) {
      saturation = 0.1;
    }
    if (saturation < 0.06) {
      saturation = 0.06;
    }
    return Number(saturation.toFixed(2));
  };
  var getValue = function(hsv, i, isLight) {
    var value;
    if (isLight) {
      value = hsv.v + brightnessStep1 * i;
    }else{
      value = hsv.v - brightnessStep2 * i
    }
    if (value > 1) {
      value = 1;
    }
    return Number(value.toFixed(2))
  };

  this.colorPalette = function(color, index) {
    var isLight = index <= 6;
    var hsv = tinycolor(color).toHsv();
    var i = isLight ? lightColorCount + 1 - index : index - lightColorCount - 1;
    return tinycolor({
      h: getHue(hsv, i, isLight),
      s: getSaturation(hsv, i, isLight),
      v: getValue(hsv, i, isLight),
    }).toHexString();
  };
})()`;
}
// It is hacky way to make this function will be compiled preferentially by less
// resolve error: `ReferenceError: colorPalette is not defined`
// https://github.com/ant-design/ant-motion/issues/44
.colorPaletteMixin();