import type { CSSObject } from '@ant-design/cssinjs';
import { unit } from '@ant-design/cssinjs';

import type { StepsToken } from '.';
import type { GenerateStyle } from '../../theme/internal';

const genStepsProgressStyle: GenerateStyle<StepsToken, CSSObject> = (token) => {
  const { calc, antCls, componentCls, iconSize, iconSizeSM, lineWidthBold, paddingXXS } = token;

  const itemCls = `${componentCls}-item`;

  const progressSize = token.calc(iconSize).add(token.calc(lineWidthBold).mul(4).equal()).equal();
  const progressSizeSM = token
    .calc(iconSizeSM)
    .add(token.calc(token.lineWidth).mul(4).equal())
    .equal();

  const enhanceSize = calc(lineWidthBold).add(lineWidthBold).equal();

  return {
    [`${componentCls}${componentCls}-with-progress`]: {
      '--steps-item-wrapper-padding-top': enhanceSize,

      [`${itemCls}${itemCls}-process`]: {
        [`${itemCls}-icon`]: {
          position: 'relative',
        },
      },

      [`${itemCls}-progress-icon`]: {
        '&-svg': {
          '--steps-svg-size': calc(enhanceSize).mul(2).add(`var(--steps-icon-size)`).equal(),
          '--icon-size-ptg-unitless': `calc(100 / tan(atan2(var(--steps-svg-size),1px)))`,
          fontSize: `var(--steps-svg-size)`,
          lineHeight: `var(--icon-size-ptg-unitless)`,

          position: 'absolute',
          inset: calc(enhanceSize).mul(-1).equal(),
          width: 'auto',
          height: 'auto',
        },

        '&-circle': {
          lineHeight: `var(--icon-size-ptg-unitless)`,
          strokeWidth: calc(`var(--icon-size-ptg-unitless)`).mul(lineWidthBold).equal(),
          '--progress-r': calc(`var(--steps-svg-size)`)
            .sub(lineWidthBold)
            .mul(`var(--icon-size-ptg-unitless)`)
            .div(2)
            .equal(),
          r: `var(--progress-r)`,
          fill: 'none',
          cx: 50,
          cy: 50,
          transition: `all ${token.motionDurationSlow} ease-in-out`,

          '&-rail': {
            stroke: token.colorSplit,
          },

          '&-ptg': {
            stroke: token.colorPrimary,
          },
        },
      },
    },

    [`&${componentCls}-with-progress11`]: {
      // ==========================================================
      // ==                        Shared                        ==
      // ==========================================================
      [itemCls]: {
        paddingTop: paddingXXS,
        paddingInlineStart: paddingXXS,
      },

      [`${itemCls}-icon`]: {
        position: 'relative',

        [`${antCls}-progress`]: {
          position: 'absolute',
          left: {
            _skip_check_: true,
            value: '50%',
          },
          top: '50%',
          transform: 'translate(-50%, -50%)',

          '&-body': {
            width: `${unit(progressSize)} !important`,
            height: `${unit(progressSize)} !important`,
          },
        },
      },

      [`&${componentCls}-small`]: {
        [`${itemCls}-icon ${antCls}-progress-body`]: {
          width: `${unit(progressSizeSM)} !important`,
          height: `${unit(progressSizeSM)} !important`,
        },
      },
    },
  };
};

export default genStepsProgressStyle;