const express = require('express');
const axios = require('axios');
const app = express();

const port = process.env.PORT || 3001;
const agentUrl = process.env.LLM_AGENT_URL;
const openWaUrl = process.env.OPEN_WA_URL;

app.use(express.json());

app.post('/webhook', async (req, res) => {
  const { message, text, from } = req.body;
  const incoming = message || text;
  try {
    if (!incoming) return res.sendStatus(200);
    const agentRes = await axios.post(agentUrl, { message: incoming });
    const reply = agentRes.data.reply || agentRes.data;
    await axios.post(`${openWaUrl}/send-text`, { to: from, message: reply });
  } catch (err) {
    console.error('Error processing message', err.message);
  }
  res.sendStatus(200);
});

app.listen(port, () => console.log(`WhatsApp router listening on ${port}`));