// Real-browser test of the PixiJS topology: boot the panel, log in, open the
// Topology tab, and assert a live WebGL canvas actually rendered the graph.
// A JS-parse check cannot catch "init() rejected" or "canvas sized to 0".
const { chromium } = require('/tmp/gltest/node_modules/playwright-core');

(async () => {
  const browser = await chromium.launch({
    args: ['--no-sandbox', '--use-gl=swiftshader', '--enable-unsafe-swiftshader'],
  });
  const page = await browser.newPage({ viewport: { width: 1400, height: 900 } });
  const errors = [], logs = [];
  page.on('pageerror', e => errors.push('pageerror: ' + e.message));
  page.on('console', m => { if (m.type() === 'error') errors.push('console: ' + m.text()); else logs.push(m.text()); });
  page.on('requestfailed', r => errors.push(`requestfailed: ${r.url()} ${r.failure()?.errorText}`));

  const creds = require('fs').readFileSync('/opt/gemastik18-final/panel/.env', 'utf8')
    .split('\n').reduce((a, l) => {
      const m = l.match(/^PANEL_ADMIN_(USER|PASS)=(.*)$/); if (m) a[m[1]] = m[2]; return a;
    }, {});

  await page.goto('https://panel.attackdefense.imrnes.team/login', { waitUntil: 'domcontentloaded' });
  await page.fill('#u', creds.USER);
  await page.fill('#p', creds.PASS);
  await page.click('#f button[type=submit]');
  await page.waitForSelector('#view-challs.active', { timeout: 20000 });

  // Open the topology tab.
  await page.click('.tab[data-view=topo]');
  await page.waitForSelector('#topoHost canvas', { timeout: 30000 });
  await page.waitForTimeout(4000);

  const res = await page.evaluate(async () => {
    // The inline script's top-level `let topoGraph` is not a window property,
    // so read it through the page's deliberate debug hook.
    const g = window.__topoProbe ? window.__topoProbe() : null;
    const host = document.getElementById('topoHost');
    const cv = host && host.querySelector('canvas');
    return {
      hasCanvas: !!cv,
      canvasW: cv ? cv.width : 0,
      canvasH: cv ? cv.height : 0,
      cssW: cv ? cv.getBoundingClientRect().width : 0,
      cssH: cv ? cv.getBoundingClientRect().height : 0,
      pixiLoaded: !!(g && g.PIXI),
      nodeViews: g ? g.nodeViews.size : 0,
      attackViews: g ? g.attackViews.size : 0,
      edgeChildren: g && g.edgeLayer ? g.edgeLayer.children.length : 0,
      nodeChildren: g && g.nodeLayer ? g.nodeLayer.children.length : 0,
      scale: g ? g.scale : null,
      engine: document.getElementById('topoEngine')?.textContent || '',
      // Are pixels actually drawn, or an empty background?
      zoomLabel: document.getElementById('topoZoomLabel')?.textContent,
    };
  });

  console.log('--- topology render state ---');
  for (const [k, v] of Object.entries(res)) console.log(`  ${k}: ${v}`);

  // Zoom controls must reach the Pixi world transform.
  await page.click('#view-topo button:has-text("Zoom In")');
  await page.waitForTimeout(400);
  const zoomed = await page.evaluate(() => ({ scale: window.__topoProbe().scale, label: document.getElementById('topoZoomLabel').textContent }));
  console.log('  after zoom-in ->', JSON.stringify(zoomed));
  await page.click('#view-topo button:has-text("\u27f3")');
  await page.waitForTimeout(300);
  // Reset now means "frame the whole graph in the viewport", not "scale=1": with
  // 37 nodes the graph is wider than the canvas, so the fit scale is < 1. Assert
  // the real contract — that reset returns to the framed scale and the view
  // transform is centred — rather than a magic 1 that only held for small graphs.
  const before = await page.evaluate(() => window.__topoProbe().scale);
  await page.click('#view-topo button:has-text("\u27f3")');
  await page.waitForTimeout(400);
  const after = await page.evaluate(() => ({
    scale: window.__topoProbe().scale,
    panX: window.__topoProbe().panX,
    label: document.getElementById('topoZoomLabel').textContent,
  }));
  console.log('  after zoom   -> scale', before.toFixed(3));
  console.log('  after reset  -> scale', after.scale.toFixed(3), 'label', after.label);
  if (Math.abs(after.scale - before) > 0.001) {
    console.log(`  FAIL: reset did not restore the framed scale (${after.scale} vs ${before})`);
    process.exitCode = 1;
  } else {
    console.log('  PASS: reset restored the framed scale');
  }

  await page.screenshot({ path: '/tmp/topo_pixi.png' });
  console.log('  screenshot -> /tmp/topo_pixi.png');

  if (errors.length) { console.log('\n--- ERRORS ---'); errors.slice(0, 12).forEach(e => console.log('  ' + e)); }
  else console.log('\n  no page errors');

  const ok = res.hasCanvas && res.canvasW > 0 && res.canvasH > 0 && res.nodeViews > 0 && res.nodeChildren > 0;
  console.log(`\n  ${ok ? 'PASS' : 'FAIL'} — canvas ${res.canvasW}x${res.canvasH}, ${res.nodeViews} nodes, ${res.edgeChildren} edge children`);
  await browser.close();
  process.exit(ok && errors.length === 0 ? 0 : 1);
})();