<?php
// opus-arch-browser-use.php - Cap 2
header('Content-Type: application/json');
$action = $_POST['action'] ?? $_GET['action'] ?? 'browse';
$whitelist = ['github.com','console.groq.com','cloud.cerebras.ai','openrouter.ai','aistudio.google.com','docs.anthropic.com'];
if ($action === 'whitelist') { echo json_encode(['ok'=>true,'whitelist'=>$whitelist]); exit; }
if ($action === 'browse') {
    $url = $_POST['url'] ?? $_GET['url'] ?? '';
    $host = parse_url($url, PHP_URL_HOST) ?: '';
    $allowed = false;
    foreach ($whitelist as $w) if (strpos($host,$w) !== false) { $allowed=true; break; }
    if (!$allowed) { echo json_encode(['ok'=>false,'error'=>'not whitelisted','whitelist'=>$whitelist]); exit; }
    $script = "from playwright.sync_api import sync_playwright\nimport sys,json\nwith sync_playwright() as p:\n  b=p.chromium.launch(headless=True,args=['--no-sandbox'])\n  pg=b.new_page()\n  try:\n    pg.goto(sys.argv[1],timeout=15000)\n    print(json.dumps({'ok':True,'title':pg.title(),'text':pg.inner_text('body')[:2000]}))\n  except Exception as e: print(json.dumps({'ok':False,'error':str(e)}))\n  finally: b.close()";
    $tmp = tempnam('/tmp','br_').'.py';
    file_put_contents($tmp, $script);
    $out = shell_exec('timeout 30 python3 '.escapeshellarg($tmp).' '.escapeshellarg($url).' 2>&1');
    @unlink($tmp);
    echo $out ?: json_encode(['ok'=>false,'error'=>'empty']);
    exit;
}
echo json_encode(['ok'=>false,'actions'=>['browse','whitelist']]);