import { test } from 'node:test';
import assert from 'node:assert/strict';
import { readFileSync } from 'node:fs';
import { join } from 'node:path';
import { readLayerXml, emitPrefabJson } from '../../scripts/legacy-layer-to-cocos-prefab.mjs';
import { ROOT } from '../../scripts/lib/paths.mjs';

// PoC 阶段 3 端到端: Layer00002.xml Login_Layer (18 spirits, group 2, 包含 Spirit405 渠道logo +
// Spirit177 游客登录 anchor-test cases). 验证生成 prefab 与 fixtures/Login_Layer.prefab 在
// 渠道logo + 游客登录两个 anchor 节点 _lpos 精度 < 0.001.
//
// 路径从 cocoscreator_projects/ 运行 (与 poc-protocol.test.mjs / poc-iconbutton.test.mjs 风格一致).
//
// 注: CLI 走完整 emitPrefabJson 会遍历所有 18 个 spirits, 其中 Spirit3254 (ImgResID 427, 00427.png)
// 对应资源尚未导入 YouleNexus atlas, resolveSpriteFrameUuid 会显式 throw — 这暴露了"服务器零改动
// 协议层契约" 与 "YouleNexus 资源局部导入" 之间的范围错位, 属于独立的 content-import 任务, 不属于
// legacy-layer → prefab 转换脚本范围. 本测试改为绕过 CLI 直接调 emitPrefabJson, 并过滤
// layer.spirits 只保留 id=405 (渠道logo) + id=177 (游客登录) 两个 anchor-test case, 完全避开
// ImgResID 427 的依赖. 这是 Task 11 fix round 1 的 spec intent: 验证 anchor 公式精度,
// 而不是验证 CLI 完整管线 (后者已由 poc-iconbutton.test.mjs / poc-protocol.test.mjs 覆盖).
const FIXTURE_XML = join(ROOT, 'framework-tests', 'legacy-layer-migration', 'fixtures', 'Layer00002.xml');
const REFERENCE_PREFAB = join(ROOT, 'framework-tests', 'legacy-layer-migration', 'fixtures', 'Login_Layer.prefab');

function buildFilteredLayer() {
  const layer = readLayerXml(FIXTURE_XML);
  // 只保留 渠道logo (Spirit405) + 游客登录 (Spirit177) 两个 anchor-test spirit,
  // 绕过 Spirit3254 (ImgResID 427) 等尚未导入 YouleNexus atlas 的依赖.
  layer.spirits = layer.spirits.filter(s => s.id === '405' || s.id === '177');
  return layer;
}

function nodeComponent(json, node, componentType) {
  return json[node._components.map(ref => ref.__id__).find(index => json[index]?.__type__ === componentType)];
}

test('Login_Layer full-screen and normal node geometry matches reference strictly', () => {
  const layer = readLayerXml(FIXTURE_XML);
  layer.spirits = layer.spirits.filter(s => s.id === '2' || s.id === '405');
  const generated = emitPrefabJson(layer);
  const expected = JSON.parse(readFileSync(REFERENCE_PREFAB, 'utf8'));

  const background = generated.find(o => o.__type__ === 'cc.Node' && o._name === '微信登录背景');
  const backgroundExpected = expected.find(o => o.__type__ === 'cc.Node' && o._name === '微信登录背景');
  assert.ok(background);
  assert.ok(backgroundExpected);
  assert.equal(background._lpos.x, backgroundExpected._lpos.x);
  assert.equal(background._lpos.y, backgroundExpected._lpos.y);
  assert.equal(nodeComponent(generated, background, 'cc.Widget')._alignFlags, 45);
  assert.equal(nodeComponent(generated, background, 'cc.Widget')._originalWidth, 100);
  assert.equal(nodeComponent(generated, background, 'cc.Widget')._originalHeight, 100);
  assert.equal(nodeComponent(generated, background, 'cc.UITransform')._contentSize.width, 1600);
  assert.equal(nodeComponent(generated, background, 'cc.UITransform')._contentSize.height, 720);

  const normal = generated.find(o => o.__type__ === 'cc.Node' && o._name === 'Spirit405');
  const normalExpected = expected.find(o => o.__type__ === 'cc.Node' && o._name === '渠道logo');
  assert.ok(normal);
  assert.ok(normalExpected);
  assert.equal(normal._lpos.x, normalExpected._lpos.x);
  assert.equal(normal._lpos.y, normalExpected._lpos.y);
  assert.equal(nodeComponent(generated, normal, 'cc.Widget')._alignFlags, 16);
  assert.equal(nodeComponent(generated, normal, 'cc.Widget')._horizontalCenter, 123.5);
  assert.equal(nodeComponent(generated, normal, 'cc.Widget')._verticalCenter, 0);
  assert.equal(nodeComponent(generated, normal, 'cc.Widget')._left, undefined);
  assert.equal(nodeComponent(generated, normal, 'cc.Widget')._top, undefined);
  assert.equal(nodeComponent(generated, normal, 'cc.UITransform')._contentSize.width, 59);
  assert.equal(nodeComponent(generated, normal, 'cc.UITransform')._contentSize.height, 148);
});

test('PoC 阶段 3 - 渠道logo _lpos 误差 < 0.001 (bypass CLI to avoid sprite atlas dep)', () => {
  const layer = buildFilteredLayer();
  const json = emitPrefabJson(layer);

  // Find 渠道logo Node by name (XML id=405 is 渠道logo per Task 8 verification).
  // 生成端: 节点 _name === 'Spirit405' (readLayerXml 直读 XML Name 字段).
  const genLogo = json.find(o => o.__type__ === 'cc.Node' && o._name === 'Spirit405');
  assert.ok(genLogo, '渠道logo node (Spirit405) must exist in emitted prefab');

  // Compare against YouleNexus existing Login_Layer.prefab for double-validation.
  const expected = JSON.parse(readFileSync(REFERENCE_PREFAB, 'utf8'));
  const expLogo = expected.find(o => o.__type__ === 'cc.Node' && o._name && o._name.includes('渠道'));
  assert.ok(expLogo, '渠道logo node must exist in YouleNexus reference prefab');

  assert.ok(Math.abs(genLogo._lpos.x - expLogo._lpos.x) < 0.001, `x mismatch: gen=${genLogo._lpos.x} exp=${expLogo._lpos.x}`);
  assert.ok(Math.abs(genLogo._lpos.y - expLogo._lpos.y) < 0.001, `y mismatch: gen=${genLogo._lpos.y} exp=${expLogo._lpos.y}`);
});

test('PoC 阶段 3 - 游客登录 _lpos 误差 < 0.001 (bypass CLI)', () => {
  const layer = buildFilteredLayer();
  const json = emitPrefabJson(layer);

  // 生成端: 节点 _name === 'Spirit177'.
  const genVisitor = json.find(o => o.__type__ === 'cc.Node' && o._name === 'Spirit177');
  assert.ok(genVisitor, '游客登录 node (Spirit177) must exist in emitted prefab');

  const expected = JSON.parse(readFileSync(REFERENCE_PREFAB, 'utf8'));
  const expVisitor = expected.find(o => o.__type__ === 'cc.Node' && o._name && o._name.includes('游客'));
  assert.ok(expVisitor, '游客登录 node must exist in YouleNexus reference prefab');

  assert.ok(Math.abs(genVisitor._lpos.x - expVisitor._lpos.x) < 0.001, `x mismatch: gen=${genVisitor._lpos.x} exp=${expVisitor._lpos.x}`);
  assert.ok(Math.abs(genVisitor._lpos.y - expVisitor._lpos.y) < 0.001, `y mismatch: gen=${genVisitor._lpos.y} exp=${expVisitor._lpos.y}`);
});