// ============================================================
// BP PERCENTILE parity tests. Vectors captured directly from the
// vanilla calculators.js height-LMS + Rosner spline coefficients.
// ============================================================

import { describe, expect, it } from 'vitest';
import * as fs from 'node:fs';
import * as path from 'node:path';
import { computeBp, type Sex, type BpClassification } from './bp';

interface BpCase {
  name: string;
  inputs: { ageYears: number; sex: Sex; heightCm: number; sbp: number; dbp: number };
  output: {
    sysPercentile: number;
    diaPercentile: number;
    heightPercentile: number;
    sysClass: BpClassification;
    diaClass: BpClassification;
    classification: BpClassification;
  };
}
interface Vectors { bp: BpCase[] }

const vectors: Vectors = JSON.parse(
  fs.readFileSync(path.join(__dirname, '..', '..', 'e2e', 'fixtures', 'calc-vectors.json'), 'utf8'),
);

describe('AAP 2017 BP percentile — parity with vanilla calculators.js', () => {
  it.each(vectors.bp)('$name', ({ inputs, output }) => {
    const actual = computeBp(inputs.ageYears, inputs.sex, inputs.heightCm, inputs.sbp, inputs.dbp);
    expect(actual.sysPercentile).toBe(output.sysPercentile);
    expect(actual.diaPercentile).toBe(output.diaPercentile);
    expect(actual.heightPercentile).toBeCloseTo(output.heightPercentile, 6);
    expect(actual.sysClass).toBe(output.sysClass);
    expect(actual.diaClass).toBe(output.diaClass);
    expect(actual.classification).toBe(output.classification);
  });
});