add healthcheck endpoint

routes/api.js

@@ -15,6 +15,25 @@ const pool = mariadb.createPool({
     connectionLimit: 100 // Adjust connection limit as needed
 });
 
+router.get("/health", async (req,res) => {
+	try {
+		// Get a connection from the pool
+		const connection = await pool.getConnection();
+
+		try {
+			// Execute a simple query to check the connection
+			await connection.query('SELECT 1');
+			res.status(200).json({ status: 'OK' });
+		} finally {
+			// Release the connection back to the pool
+			connection.release();
+		}
+	} catch (err) {
+		console.error('Database connection error:', err);
+		res.status(500).json({ status: 'ERROR', error: 'Database connection error' });
+	}
+});
+
 router.get("/v1/myIP", (req,res) => {
 	res.json({
 		ip: req.headers['x-forwarded-for'] || req.connection.remoteAddress