import assert from 'node:assert/strict';
import fs from 'node:fs';
import path from 'node:path';
import test from 'node:test';
import { fileURLToPath } from 'node:url';

const here = path.dirname(fileURLToPath(import.meta.url));

void test('PxiEffectsOverlay: canvas не перехватывает указатель в режиме без interactive', () => {
  const src = fs.readFileSync(path.join(here, 'PxiEffectsOverlay.tsx'), 'utf8');
  assert.ok(src.includes("app.canvas.style.pointerEvents = interactive ? 'auto' : 'none'"));
});

void test('PxiEffectsOverlay: lazy WebGL until effects need it', () => {
  const src = fs.readFileSync(path.join(here, 'PxiEffectsOverlay.tsx'), 'utf8');
  assert.ok(src.includes('effectsNeedWebGl'));
  assert.ok(src.includes('gpuBoot'));
  assert.match(src, /canvas\.style\.display = 'none'/);
  assert.match(src, /const dpr = useMemo\(\(\) => 1/);
});

void test('PxiEffectsOverlay: imperative setDraft для кисти без React state', () => {
  const src = fs.readFileSync(path.join(here, 'PxiEffectsOverlay.tsx'), 'utf8');
  assert.ok(src.includes('setDraft'));
  assert.ok(src.includes('useImperativeHandle'));
  assert.ok(src.includes('mergeDraftState'));
});

void test('PxiEffectsOverlay: lazy VFX packs + idle ticker stop', () => {
  const src = fs.readFileSync(path.join(here, 'PxiEffectsOverlay.tsx'), 'utf8');
  assert.ok(src.includes('ensureVfxPacksForState'));
  assert.ok(src.includes('collectNeededVfxPacks'));
  assert.ok(src.includes('syncTickerForState'));
  assert.ok(src.includes('app.ticker.stop'));
  // После clear нужен явный render, иначе «очистить» замораживает кадр вместо исчезновения.
  assert.match(src, /app\.render\?\.\(\);[\s\S]*?app\.ticker\.stop/);
  // Eager preload всех наборов при init убран.
  assert.doesNotMatch(
    src,
    /syncNodes\([\s\S]*?stateRef\.current[\s\S]*?\);\s*void preloadLightningVfxFrameTextures\(pixi\);\s*void preloadElectricAccentFrameTextures\(pixi\);\s*void preloadFogVfxFrameTextures\(pixi\);/,
  );
  assert.ok(src.includes('Lazy VFX'));
});

void test('PxiEffectsOverlay: эффекты перекладываются при смене viewport (зум/пан)', () => {
  const src = fs.readFileSync(path.join(here, 'PxiEffectsOverlay.tsx'), 'utf8');
  assert.ok(src.includes('relayoutInstanceNode'));
  assert.ok(src.includes('instanceContentSig'));
  assert.ok(src.includes('viewportSig'));
  assert.match(src, /\$\{contentSig\}@\$\{viewportSig\(viewport\)\}/);
});

void test('PxiEffectsOverlay: canvas по contentRect + preview profile', () => {
  const src = fs.readFileSync(path.join(here, 'PxiEffectsOverlay.tsx'), 'utf8');
  const css = fs.readFileSync(path.join(here, 'PxiEffectsOverlay.module.css'), 'utf8');
  assert.ok(css.includes('.hostBound'));
  assert.ok(css.includes('.hostFill'));
  assert.match(src, /perfProfile\s*=\s*'live'/);
  assert.match(src, /resolution:\s*preview\s*\?\s*0\.5\s*:\s*dpr/);
  assert.match(src, /maxFPS\s*=\s*preview\s*\?\s*12\s*:\s*32/);
  assert.ok(src.includes('decimateFieldStampPoints'));
  assert.ok(src.includes('fieldStampPoints'));
  assert.match(src, /viewportRef\.current = \{ x: 0, y: 0, w: viewport\.w/);
});