import genCalc from '../util/calc';
import type AbstractCalculator from '../util/calc/calculator';
import getAlphaColor from '../util/getAlphaColor';
import genMaxMin from '../util/maxmin';

describe('util', () => {
  describe('getAlphaColor', () => {
    it('should not process color with alpha', () => {
      expect(getAlphaColor('rgba(0, 0, 0, 0.5)', 'rgba(255, 255, 255)')).toBe('rgba(0, 0, 0, 0.5)');
    });
  });

  describe('calculator', () => {
    const cases: [
      (calc: (num: number | AbstractCalculator) => AbstractCalculator) => string | number,
      { js: number; css: string },
    ][] = [
      [
        // 1 + 1
        (calc) => calc(1).add(1).equal(),
        {
          js: 2,
          css: 'calc(1px + 1px)',
        },
      ],
      [
        // (1 + 1) * 4
        (calc) => calc(1).add(1).mul(4).equal(),
        {
          js: 8,
          css: 'calc((1px + 1px) * 4)',
        },
      ],
      [
        // (2 + 4) / 2 - 2
        (calc) => calc(2).add(4).div(2).sub(2).equal(),
        {
          js: 1,
          css: 'calc((2px + 4px) / 2 - 2px)',
        },
      ],
      [
        // Bad case
        // (2 + 4) / (3 - 2) - 2
        (calc) => calc(2).add(4).div(calc(3).sub(2)).sub(2).equal(),
        {
          js: 4,
          css: 'calc((2px + 4px) / (3px - 2px) - 2px)',
        },
      ],
      [
        // Bad case
        // 2 * (2 + 3)
        (calc) => calc(2).mul(calc(2).add(3)).equal(),
        {
          js: 10,
          css: 'calc(2px * (2px + 3px))',
        },
      ],
      [
        // (1 + 2) * 3
        (calc) => calc(calc(1).add(2)).mul(3).equal(),
        {
          js: 9,
          css: 'calc((1px + 2px) * 3)',
        },
      ],
      [
        // 1 + (2 - 1)
        (calc) => calc(1).add(calc(2).sub(1)).equal(),
        {
          js: 2,
          css: 'calc(1px + (2px - 1px))',
        },
      ],
      [
        // 1 + 2 * 2
        (calc) => calc(1).add(calc(2).mul(2)).equal(),
        {
          js: 5,
          css: 'calc(1px + 2px * 2)',
        },
      ],
      [
        // 5 - (2 - 1)
        (calc) => calc(5).sub(calc(2).sub(1)).equal(),
        {
          js: 4,
          css: 'calc(5px - (2px - 1px))',
        },
      ],
      [
        // 2 * 6 / 3
        (calc) => calc(2).mul(6).div(3).equal(),
        {
          js: 4,
          css: 'calc(2px * 6 / 3)',
        },
      ],
      [
        // 6 / 3 * 2
        (calc) => calc(6).div(3).mul(2).equal(),
        {
          js: 4,
          css: 'calc(6px / 3 * 2)',
        },
      ],
      [
        // Bad case
        // 6 / (3 * 2)
        (calc) => calc(6).div(calc(3).mul(2)).equal(),
        {
          js: 1,
          css: 'calc(6px / (3px * 2))',
        },
      ],
      [
        // 6
        (calc) => calc(6).equal(),
        {
          js: 6,
          css: '6px',
        },
      ],
      [
        // 1000 + 100 without unit
        (calc) => calc(1000).add(100).equal({ unit: false }),
        {
          js: 1100,
          css: 'calc(1000 + 100)',
        },
      ],
    ];

    cases.forEach(([exp, { js, css }], index) => {
      it(`js calc ${index + 1}`, () => {
        expect(exp(genCalc('js'))).toBe(js);
      });

      it(`css calc ${index + 1}`, () => {
        expect(exp(genCalc('css'))).toBe(css);
      });
    });

    it('css calc should work with string', () => {
      const calc = genCalc('css');
      expect(calc('var(--var1)').add('var(--var2)').equal()).toBe(
        'calc(var(--var1) + var(--var2))',
      );
    });
  });

  describe('maxmin', () => {
    const cases = [
      {
        values: [1, 2, 3],
        js: {
          max: 3,
          min: 1,
        },
        css: {
          max: 'max(1px,2px,3px)',
          min: 'min(1px,2px,3px)',
        },
      },
    ];

    cases.forEach(({ values, js, css }, index) => {
      it(`js maxmin ${index + 1}`, () => {
        const { max, min } = genMaxMin('js');
        expect(max(...values)).toEqual(js.max);
        expect(min(...values)).toEqual(js.min);
      });

      it(`css maxmin ${index + 1}`, () => {
        const { max, min } = genMaxMin('css');
        expect(max(...values)).toEqual(css.max);
        expect(min(...values)).toEqual(css.min);
      });
    });
  });
});