feat: implement sensor connection endpoint and add pending tokens route

realtime/src/routes/sensors.js

@@ -1,7 +1,7 @@
 const router = require('express').Router();
 const db = require('../store/db');
 
-router.get('/sensors', async (req, res) => {
+router.get('/', async (req, res) => {
     try {
         const result = await db.query('SELECT id, name FROM sensors', [], 'sensors');
         res.json(result.rows);
@@ -11,4 +11,20 @@ router.get('/sensors', async (req, res) => {
     }
 });
 
+router.get('/:id', async (req, res) => {
+    const { id } = req.params;
+    try {
+        const result = await db.query('SELECT id, name FROM sensors WHERE id = $1', [id], 'sensors');
+        if (result.rows.length === 0) {
+            return res.status(404).json({ error: 'sensor not found' });
+        }
+        res.json(result.rows[0]);
+    } catch (err) {
+        console.error('Error fetching sensor', err);
+        res.status(500).json({ error: 'internal server error' });
+    }
+});
+
+
+
 module.exports = router;