import { describe, expect, it } from 'vitest';
import { buildPier } from '../src/core/geometry';
import { P1_COPING_GEOM, sideRowLevels } from '../src/core/coping-geom';
import { shearUHeight, shearULength } from '../src/core/rebar/coping';
import { rebarSummary } from '../src/core/rebar/summary';
import { buildRebar3D } from '../src/view/rebar3d';
import { loadP1 } from './helpers';

const L = 12000;

describe('① 코핑 끝단 높이 h1 · 테이퍼 높이 h2 · Level 폭 (1단계, 승인 2026-10-23)', () => {
  it('the P1 geometry reproduces the document U heights (890.9, 2178.8, Level 2300)', () => {
    expect(shearUHeight(300, L)).toBeCloseTo(890.9, 1);
    expect(shearUHeight(4550, L)).toBeCloseTo(2178.8, 1);
    expect(shearUHeight(6000, L)).toBeCloseTo(2300, 6);
  });

  it('the model defaults to the P1 coping geometry and the P1 shear lengths', () => {
    const model = buildPier(loadP1());
    expect(model.copingGeom).toEqual(P1_COPING_GEOM);
    expect(model.endBottom).toBeCloseTo(43.411 - 1.0, 6);
    expect(model.levelBottom).toBeCloseTo(43.411 - 1.0 - 1.5, 6);
  });

  it('a higher end height h1 lowers the coping ends and adds the same height to every U', () => {
    const base = buildPier(loadP1());
    const high = buildPier({ ...loadP1(), copingH1Mm: 1200 });
    expect(high.endBottom).toBeCloseTo(base.endBottom - 0.2, 6);
    expect(high.levelBottom).toBeCloseTo(base.levelBottom - 0.2, 6);
    const geomH1 = { ...P1_COPING_GEOM, h1: 1200 };
    expect(shearUHeight(300, L, geomH1)).toBeCloseTo(shearUHeight(300, L) + 200, 6);
    expect(shearULength(300, L, geomH1)).toBeCloseTo(shearULength(300, L) + 400, 6);
  });

  it('a taper h2 changes the Level underside and the height at the Level', () => {
    const high = buildPier({ ...loadP1(), copingH2Mm: 1800 });
    expect(high.levelBottom).toBeCloseTo(43.411 - 1.0 - 1.8, 6);
    expect(shearUHeight(6000, L, { ...P1_COPING_GEOM, h2: 1800 })).toBeCloseTo(2600, 6);
  });

  it('a wider Level changes the Level zone in the model and the shear-bar Level half-width', () => {
    const wide = buildPier({ ...loadP1(), levelWidthMm: 2500 });
    expect(wide.copingGeom.levelWidth).toBe(2500);
    expect(wide.levelBottom).toBeCloseTo(buildPier(loadP1()).levelBottom, 6);
  });

  it('side-row levels keep their P1 values from the Level underside (assumption, 명세 확인 필요)', () => {
    const levels = sideRowLevels(40.911);
    expect(levels.zBottom).toBeCloseTo(41.288, 6);
    expect(levels.zBreak).toBeCloseTo(42.538, 6);
  });

  it('the coping rebar follows a changed geometry: the rows and the 3D build without error, the positions are unchanged', () => {
    const base = rebarSummary(buildPier(loadP1())).rows;
    const changed = buildPier({ ...loadP1(), copingH1Mm: 1200, copingH2Mm: 1600, levelWidthMm: 2300 });
    const rows = rebarSummary(changed).rows;
    expect(rows.find((r) => r.name === 'C10')!.count).toBe(base.find((r) => r.name === 'C10')!.count);
    expect(rows.find((r) => r.name === 'C9')!.count).toBe(base.find((r) => r.name === 'C9')!.count);
    expect(buildRebar3D(changed).byName.get('C10')!.length).toBeGreaterThan(0);
  });
});