import { describe, expect, it } from 'vitest';
import { buildPier } from '../src/core/geometry';
import { DEFAULT_MATERIAL } from '../src/core/rebar/common';
import { buildQuantity, quantityRows, unitWeight } from '../src/core/rebar/quantity';
import { rebarSummary } from '../src/core/rebar/summary';
import { loadP1 } from './helpers';

const model = buildPier(loadP1());
const rows = rebarSummary(model).rows;

describe('철근재료표 (승인 2026-10-23)', () => {
  it('unit weight is 0.00617 · d² on the nominal diameter (H19 19.1 → 2.25 kg/m)', () => {
    expect(unitWeight(19.1)).toBeCloseTo(2.25, 2);
  });

  it('groups by 강종 then diameter; the group totals add up to the total', () => {
    const q = buildQuantity(rows, DEFAULT_MATERIAL);
    expect(q.groups.map((g) => g.grade)).toEqual([300, 400, 500].filter((g) => q.groups.some((x) => x.grade === g)));
    expect(q.groups.reduce((s, g) => s + g.kg, 0)).toBeCloseTo(q.kg, 6);
    for (const g of q.groups) {
      expect(g.diameters.reduce((s, d) => s + d.kg, 0)).toBeCloseTo(g.kg, 6);
    }
  });

  it('a row with several lengths is totalled from its pieces, not left out', () => {
    const q = buildQuantity(rows, DEFAULT_MATERIAL);
    expect(q.missing).toEqual([]);
    expect(q.groups.flatMap((g) => g.diameters.flatMap((d) => d.lines.map((l) => l.name)))).toContain('C9');
  });

  it('couplers are counted, not weighed', () => {
    const q = buildQuantity(rows, DEFAULT_MATERIAL);
    expect(q.couplers.find((c) => c.name === '주철근 커플러')!.count).toBe(368);
    expect(q.couplers.find((c) => c.name === '띠철근 커플러')!.count).toBe(35);
  });

  it('할증 is 0% by default and multiplies the total when set', () => {
    const q0 = buildQuantity(rows, DEFAULT_MATERIAL);
    expect(q0.kgWithWaste).toBeCloseTo(q0.kg, 6);
    const q10 = buildQuantity(rows, { ...DEFAULT_MATERIAL, waste: 10 });
    expect(q10.kgWithWaste).toBeCloseTo(q0.kg * 1.1, 6);
    expect(q10.ton).toBeCloseTo(q0.kg * 1.1 / 1000, 9);
  });

  it('the Excel rows start with the header and end with the couplers', () => {
    const aoa = quantityRows(buildQuantity(rows, DEFAULT_MATERIAL));
    expect(aoa[0][0]).toBe('강종');
    expect(aoa[aoa.length - 1][0]).toBe('커플러 (개수만)');
  });
});