import { describe, expect, it } from 'vitest';
import { buildPier } from '../src/core/geometry';
import { DEFAULT_MATERIAL, isAssumedMaterial } from '../src/core/rebar/common';
import { columnRebar } from '../src/core/rebar/column';
import { rebarSummary } from '../src/core/rebar/summary';
import { loadP1 } from './helpers';

describe('③ 공통 설정: fck · fy 입력 (spec §6.2)', () => {
  const model = buildPier(loadP1());

  it('defaults are assumed (I02); changed values are not', () => {
    expect(isAssumedMaterial(DEFAULT_MATERIAL)).toBe(true);
    expect(isAssumedMaterial({ ...DEFAULT_MATERIAL, fck: 35 })).toBe(false);
  });

  it('a higher fck shortens the laps: P3 lap scales with 1/√fck (27 → 35)', () => {
    const base = columnRebar();
    const high = columnRebar(undefined, { ...DEFAULT_MATERIAL, fck: 35 });
    expect(high.lapP3 / base.lapP3).toBeCloseTo(Math.sqrt(27 / 35), 3);
    expect(high.zTop2).toBeLessThan(base.zTop2);
  });

  it('the rebar summary follows the material: the C7 splice piece changes with fck', () => {
    const base = rebarSummary(model).rows.find((r) => r.name === 'C7')!.length!;
    const high = rebarSummary(model, { ...DEFAULT_MATERIAL, fck: 35 }).rows.find((r) => r.name === 'C7')!.length!;
    expect(high).toBeLessThan(base);
  });

  it('a non-default material drops the I02 warning', () => {
    const codes = rebarSummary(model, { ...DEFAULT_MATERIAL, fyS: 600 }).warnings.map((w) => w.code);
    expect(codes).not.toContain('I02');
  });
});