import { describe, expect, it } from 'vitest';
import { buildPier } from '../src/core/geometry';
import { columnInputFor, columnRebar } from '../src/core/rebar/column';
import { loadP1 } from './helpers';

describe('기둥 철근 높이는 모델에서 (Hc · h_cop, 승인 2026-10-23)', () => {
  it('P1: Hc 12703 and h_cop 2644 come out of the model, as in 기둥철근.md', () => {
    const input = columnInputFor(buildPier(loadP1()));
    expect(input.Hc).toBeCloseTo(12703, 0);
    expect(input.hcop).toBeCloseTo(2644, 0);
    const col = columnRebar(input);
    expect(col.zTop2).toBeCloseTo(14539, 0);
    expect(col.zTop1).toBeCloseTo(14776, 0);
  });

  it('taper h2 = 3000: Level underside 39.411, Hc 11203, P2 top 13039 (= Level underside + l_d)', () => {
    const m = buildPier({ ...loadP1(), copingH2Mm: 3000 });
    const input = columnInputFor(m);
    expect(input.Hc).toBeCloseTo(11203, 0);
    // h_cop = step top (43.555) − Level underside (39.411): the coping at the column gets taller with h2.
    expect(input.hcop).toBeCloseTo(4144, 0);
    const col = columnRebar(input);
    expect(col.zTop2).toBeCloseTo(13039, 0);
    // The P1 top is anchored to the step top (and C3), so it does not move with h2.
    expect(col.zTop1).toBeCloseTo(14776, 0);
  });

  it('P3 and P6 end at the coping middle level: P1 e_top 1322; taper 3000 gives e_top 2072, P3 37 ties, P6 32 bars', () => {
    const p1 = columnInputFor(buildPier(loadP1()));
    expect(p1.eTop).toBeCloseTo(1322, 0);
    const high = columnInputFor(buildPier({ ...loadP1(), copingH2Mm: 3000 }));
    expect(high.eTop).toBeCloseTo(2072, 0);
    const col = columnRebar(high);
    expect(col.zTopT).toBeCloseTo(13275, 0);
    expect(col.p3Count).toBe(37);
    expect(col.p6Count).toBe(32);
  });
});