import { kelviq } from '@kelviq/node-sdk';

export async function handleAgentRequest(req, res) {
  const userId = req.headers["x-user-id"];

  // Use the same consistent method as your other backend checks.
  // This verifies credits and permissions in a single round-trip.
  const { granted, message } = await kelviq.hasAccess({
    userId,
    featureId: "agent_call",
    consume: 1
  });

  if (!granted) {
    // Return a 402 Payment Required or custom message from your dashboard
    return res.status(402).send(message || "Payment required");
  }

  // Run your AI model or expensive computation
  const result = await runAIAgent(req);

  // Record high-fidelity usage metadata to your Kelviq ledger
  await kelviq.reportUsage('agent_call', {
    userId,
    value: 1,
    metadata: { 
      latency_ms: result.latency_ms,
      model: "gpt-4.5" 
    }
  });

  return res.json(result);
}