From b61571f055b2c6aa036490aa97c23f984612f71c Mon Sep 17 00:00:00 2001
From: Vani Lakshmi K <vanilakshmik@gmail.com>
Date: Mon, 23 Mar 2026 23:55:40 +0530
Subject: [PATCH] Backend: fix event registration error handling

---
 backend/controllers/dashboardController.js | 20 +++++++++++++
 backend/controllers/eventControllers.js    | 20 +++++++++++++
 backend/package-lock.json                  |  2 ++
 backend/routes/events.js                   | 33 ++++++++++++++--------
 4 files changed, 63 insertions(+), 12 deletions(-)

diff --git a/backend/controllers/dashboardController.js b/backend/controllers/dashboardController.js
index 193c6b26..354c547e 100644
--- a/backend/controllers/dashboardController.js
+++ b/backend/controllers/dashboardController.js
@@ -1,4 +1,5 @@
 // controllers/dashboardController.js
+
 const {
     Feedback,
     Achievement,
@@ -184,4 +185,23 @@ exports.getDashboardStats = async (req, res) => {
         console.error("Error fetching dashboard stats:", error);
         res.status(500).send("Server Error");
     }
+};
+exports.getRegisteredEvents = async (req, res) => {
+    try {
+        if (!req.user) {
+            return res.status(401).json({ message: "Unauthorized: Please login first" });
+        }
+
+        const userId = req.user._id;
+
+        const events = await Event.find({
+            participants: userId
+        });
+
+        res.status(200).json(events);
+
+    } catch (error) {
+        console.error("Error fetching registered events:", error);
+        res.status(500).json({ message: "Server error" });
+    }
 };
\ No newline at end of file
diff --git a/backend/controllers/eventControllers.js b/backend/controllers/eventControllers.js
index 60832b0e..3a9a0dc7 100644
--- a/backend/controllers/eventControllers.js
+++ b/backend/controllers/eventControllers.js
@@ -20,4 +20,24 @@ exports.getLatestEvents = async (req, res) => {
         console.error('Error fetching latest events:', error);
         res.status(500).json({ message: 'Server error' });
     }
+};
+exports.getRegisteredEvents = async (req, res) => {
+    try {
+
+        if (!req.user) {
+            return res.status(401).json({ message: "Unauthorized: Please login first" });
+        }
+
+        const userId = req.user._id;
+
+        const events = await Event.find({
+            participants: userId
+        });
+
+        res.status(200).json(events);
+
+    } catch (error) {
+        console.error("Error fetching registered events:", error);
+        res.status(500).json({ message: "Server error" });
+    }
 };
\ No newline at end of file
diff --git a/backend/package-lock.json b/backend/package-lock.json
index 1d66737d..de6a820b 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -1505,6 +1505,7 @@
       "version": "8.11.2",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.11.2.tgz",
       "integrity": "sha512-nc0Axzp/0FILLEVsm4fNwLCwMttvhEI263QtVPQcbpfZZ3ts0hLsZGOpE6czNlid7CJ9MlyH8reXkpsf3YUY4w==",
+      "peer": true,
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -2510,6 +2511,7 @@
       "version": "8.56.0",
       "resolved": "https://registry.npmjs.org/eslint/-/eslint-8.56.0.tgz",
       "integrity": "sha512-Go19xM6T9puCOWntie1/P997aXxFsOi37JIHRWI514Hc6ZnaHGKY9xFhrU65RT6CcBEzZoGG1e6Nq+DT04ZtZQ==",
+      "peer": true,
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.2.0",
         "@eslint-community/regexpp": "^4.6.1",
diff --git a/backend/routes/events.js b/backend/routes/events.js
index 4bf5dd92..43043908 100644
--- a/backend/routes/events.js
+++ b/backend/routes/events.js
@@ -1,3 +1,4 @@
+const dashboardController = require("../controllers/dashboardController");
 const express = require("express");
 const router = express.Router();
 const { Event, User, OrganizationalUnit } = require("../models/schema");
@@ -255,14 +256,12 @@ router.post(
         event: updatedEvent,
       });
     } catch (error) {
-      if (error?.name === "CastError") {
-       return res.status(400).json({ message: "Invalid event ID format." });
-      }
-      console.error("Event registration error:", error);
-      return res
-        .status(500)
-        .json({ message: "Server error during registration." });
-    }
+  if (error?.name === "CastError") {
+    return res.status(400).json({ message: "Invalid event ID format." });
+  }
+  console.error("Event registration error:", error);
+  return res.status(500).json({ message: "Internal server error." });
+}
   },
 );
 
@@ -474,7 +473,6 @@ router.put("/:eventId", isAuthenticated, isEventContact, async (req, res) => {
       .json({ message: "Server error", error: err.message });
   }
 });
-
 // Delete an event (only unit contact)
 router.delete(
   "/:eventId",
@@ -484,13 +482,24 @@ router.delete(
     try {
       const { eventId } = req.params;
       const deleted = await Event.findByIdAndDelete(eventId);
-      if (!deleted) return res.status(404).json({ message: "Event not found" });
+
+      if (!deleted) {
+        return res.status(404).json({ message: "Event not found" });
+      }
+
       return res.json({ message: "Event deleted" });
     } catch (err) {
       console.error("delete event error:", err);
       return res.status(500).json({ message: "Server error" });
     }
-  },
+  }
+);
+
+// Get registered events
+router.get(
+  "/registered-events",
+  isAuthenticated,
+  dashboardController.getRegisteredEvents
 );
 
-module.exports = router;
+module.exports = router;
\ No newline at end of file