// server/routes/serialUtils.js
const router = require('express').Router();
const { listSerialPorts, connectSerial, getLatestPacket } = require('../serial');

router.get('/serialports', async (req, res) => {
    try {
        const ports = await listSerialPorts();
        res.json(ports);
    } catch (err) {
        console.error('Error listing ports:', err);
        res.status(500).json({ error: 'Could not list serial ports' });
    }
});

router.get('/latest', (req, res) => {
    const payload = getLatestPacket();
    if (!payload) {
        return res.status(204).end();  // No Content
    }
    res.json(payload);
});

router.post('/connect', (req, res) => {
    const { path } = req.body;
    if (!path) {
        return res.status(400).json({ error: 'Path is required' });
    }

    try {
        connectSerial(path);
        res.json({
            ok: true,
            connectedTo: path,
            baudRate: 115200
        });
    } catch (err) {
        console.error('Failed to connect:', err);
        res.status(500).json({ error: 'Could not open serial port' });
    }
});

module.exports = router;