improve healthcheck slightly

backend/src/api.js

@@ -69,19 +69,33 @@ export function generateRequestBodies() {
  * @swagger
  * /api/healthcheck:
  *   get:
- *     summary: Check if the API is running
+ *     summary: Check if the API is running and if the database is reachable
  *     responses:
  *       200:
- *         description: API is healthy
+ *         description: API and DB are healthy
  *         content:
  *           application/json:
  *             example:
  *               status: "ok"
+ *               db: "ok"
+ *       500:
+ *         description: Database unreachable
+ *         content:
+ *           application/json:
+ *             example:
+ *               status: "error"
+ *               db: "down"
  */
-router.get("/healthcheck", (req, res) => {
-    res.json({ status: "ok" })
+router.get("/healthcheck", async (req, res) => {
+  try {
+    await pool.query("SELECT 1"); // basic DB check
+    res.json({ status: "ok", db: "ok" });
+  } catch {
+    res.status(500).json({ status: "error", db: "down" });
+  }
 });
 
+
 /**
  * @swagger
  * /api/users: