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import { FP } from '../../../../../util/floating_point.js';
import { selectNCases } from '../../case.js';
import { makeCaseCache } from '../../case_cache.js';

// Cases: [f32|f16|abstract]_[non_]const
// abstract_non_const is empty and unused
const scalar_cases = (['f32', 'f16', 'abstract'] as const)
  .flatMap(trait =>
    ([true, false] as const).map(nonConst => ({
      [`${trait}_${nonConst ? 'non_const' : 'const'}`]: () => {
        if (trait === 'abstract' && nonConst) {
          return [];
        }
        const cases = FP[trait].generateScalarTripleToIntervalCases(
          FP[trait].sparseScalarRange(),
          FP[trait].sparseScalarRange(),
          FP[trait].sparseScalarRange(),
          nonConst ? 'unfiltered' : 'finite',
          // mix has an inherited accuracy, so abstract is only expected to be as accurate as f32
          ...FP[trait !== 'abstract' ? trait : 'f32'].mixIntervals
        );
        return selectNCases('mix_scalar', trait === 'abstract' ? 50 : cases.length, cases);
      },
    }))
  )
  .reduce((a, b) => ({ ...a, ...b }), {});

// Cases: [f32|f16]_vecN_scalar_[non_]const
// abstract_vecN_non_const is empty and unused
const vec_scalar_cases = (['f32', 'f16', 'abstract'] as const)
  .flatMap(trait =>
    ([2, 3, 4] as const).flatMap(dim =>
      ([true, false] as const).map(nonConst => ({
        [`${trait}_vec${dim}_scalar_${nonConst ? 'non_const' : 'const'}`]: () => {
          if (trait === 'abstract' && nonConst) {
            return [];
          }
          const cases = FP[trait].generateVectorPairScalarToVectorComponentWiseCase(
            FP[trait].sparseVectorRange(dim),
            FP[trait].sparseVectorRange(dim),
            FP[trait].sparseScalarRange(),
            nonConst ? 'unfiltered' : 'finite',
            // mix has an inherited accuracy, so abstract is only expected to be as accurate as f32
            ...FP[trait !== 'abstract' ? trait : 'f32'].mixIntervals
          );
          return selectNCases('mix_vector', trait === 'abstract' ? 50 : cases.length, cases);
        },
      }))
    )
  )
  .reduce((a, b) => ({ ...a, ...b }), {});

export const d = makeCaseCache('mix', {
  ...scalar_cases,
  ...vec_scalar_cases,
});