import assert from "node:assert/strict";
import test from "node:test";
import { buildCdslSelectorRuntime } from "./cdsl-selector-runtime";

test("maps CDSL selector planes onto preview triangles", () => {
  const runtime = buildCdslSelectorRuntime({
    references: [{
      id: "face_top",
      selectorType: "face",
      label: "top",
      center: [0, 0, 10],
      normal: [0, 0, 1],
      frame: { origin_mm: [0, 0, 10], normal: [0, 0, 1], x_dir: [1, 0, 0], y_dir: [0, 1, 0] },
      bbox: { min: [-10, -10, 0], max: [10, 10, 10] },
    }],
  }, {
    // One source XY triangle at z=10, expressed in the preview's X/-Z/Y basis.
    vertices: new Float32Array([0, -10000, 0, 10000, -10000, 0, 0, -10000, 10000]),
    indices: new Uint32Array([0, 1, 2]),
    bounds: { min: [0, -10000, 0], max: [10000, -10000, 10000] },
  });

  assert.equal(runtime.references.length, 1);
  assert.equal(runtime.proxy.faceIds.length, 1);
  assert.equal(runtime.proxy.faceIds[0], 0);
  assert.deepEqual([...runtime.proxy.faceRuns], [0, 0, 0, 1, 0]);
  assert.equal(runtime.faceReferenceByRowIndex.get(0)?.id, "face_top");
});

test("uses backend face triangle ranges when they are available", () => {
  const runtime = buildCdslSelectorRuntime({
    references: [
      { id: "face_000", selectorType: "face", center: [0, 0, 0], normal: [0, 0, 1], frame: { origin_mm: [0, 0, 0], normal: [0, 0, 1] }, triangle_start: 0, triangle_count: 1 },
      { id: "face_001", selectorType: "face", center: [0, 0, 1], normal: [0, 0, -1], frame: { origin_mm: [0, 0, 1], normal: [0, 0, -1] }, triangle_start: 1, triangle_count: 1 },
    ],
  }, {
    vertices: new Float32Array(18),
    indices: new Uint32Array([0, 1, 2, 3, 4, 5]),
  });

  assert.deepEqual([...runtime.proxy.faceIds], [0, 1]);
  assert.deepEqual([...runtime.proxy.faceRuns], [0, 0, 0, 1, 0, 0, 0, 1, 1, 1]);
});

test("keeps face row lookup separate from edge row lookup", () => {
  const runtime = buildCdslSelectorRuntime({
    references: [
      { id: "face_000", selectorType: "face", center: [0, 0, 0], normal: [0, 0, 1], frame: { origin_mm: [0, 0, 0], normal: [0, 0, 1] } },
    ],
    edges: [{
      record_id: "edge_000",
      geometry: { start_mm: [0, 0, 0], end_mm: [1, 0, 0], center_mm: [0.5, 0, 0], bbox_mm: [0, 0, 0, 1, 0, 0], curve_type: "line" },
    }],
  }, {
    vertices: new Float32Array(9),
    indices: new Uint32Array([0, 1, 2]),
  });

  assert.equal(runtime.faceReferenceByRowIndex.get(0)?.id, "face_000");
  assert.equal(runtime.edgeReferenceByRowIndex.get(0)?.id, "edge_000");
  assert.deepEqual(runtime.faces.map((reference) => reference.id), ["face_000"]);
});