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

const count = (svg: string, cls: string) => svg.split(`class="${cls}"`).length - 1;

describe('기둥 단면 A·B·C (승인 2026-10-26, 추천)', () => {
  const m = buildPier(loadP1());
  const input = columnInputFor(m);
  const col = columnRebar(input);

  it('A 일반: no coupler, P1 and P2 at all 46 angles, no P6 chords', () => {
    const svg = columnSectionSvg('A', input, col);
    expect(count(svg, 'coupler')).toBe(0);
    expect(count(svg, 'p1')).toBe(input.nDiv);
    expect(count(svg, 'p2')).toBe(input.nDiv);
    expect(count(svg, 'p6')).toBe(0);
  });

  it('C 단부 (P5): one coupler on a full ring', () => {
    const svg = columnSectionSvg('C', input, col);
    expect(count(svg, 'coupler')).toBe(1);
    expect(count(svg, 'p5')).toBe(1);
  });

  it('B 확대기초 안 (P4): two semicircles, two couplers, and the four P6 chords at its P6 level', () => {
    const svg = columnSectionSvg('B', input, col);
    expect(count(svg, 'coupler')).toBe(2);
    expect(count(svg, 'p4')).toBe(2);
    expect(count(svg, 'p6')).toBe(4);
  });
});