<?php
header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');
$data = json_decode(file_get_contents('php://input'), true);
$url = $data['url'] ?? '';
$task = $data['task'] ?? 'extract';
$query = $data['query'] ?? '';

if (empty($url)) { echo json_encode(['error'=>'URL required']); exit; }

// Browser Use via Python subprocess
$py = <<<PY
import asyncio, json, sys
from browser_use import Agent
from langchain_openai import ChatOpenAI

async def run():
    try:
        # Use Groq as LLM backend
        import os
        os.environ['OPENAI_API_KEY'] = 'dummy'
        
        agent = Agent(
            task="{$task}: {$query} from {$url}",
            llm=ChatOpenAI(
                model="llama-3.3-70b-versatile",
                base_url="https://api.groq.com/openai/v1",
                api_key="gsk_placeholder"
            )
        )
        result = await agent.run()
        print(json.dumps({"ok": True, "result": str(result)}))
    except Exception as e:
        print(json.dumps({"ok": False, "error": str(e)}))

asyncio.run(run())
PY;
$result = shell_exec("timeout 30 python3 -c " . escapeshellarg($py) . " 2>&1");
echo $result ?: json_encode(['error'=>'timeout']);