Added backend and integration for FilterPage and CourseTable done

server/routes/courseRoutes.js

@@ -0,0 +1,38 @@
+const express = require("express");
+const Course = require("../models/Course");
+
+const router = express.Router();
+
+router.get("/", async (req, res) => {
+    try {
+      const filter = {};
+  
+      if (req.query.department) filter.department = req.query.department;
+      if (req.query.program) filter.program = req.query.program;
+      if (req.query.semester) filter.semester = Number(req.query.semester); // Convert to number if needed
+      if (req.query.scheme) filter.scheme = req.query.scheme;
+  
+      const courses = await Course.find(filter);
+      res.json(courses);
+    } catch (error) {
+      console.error("Error fetching courses:", error);
+      res.status(500).json({ error: "Failed to fetch courses" });
+    }
+  });
+  
+
+// Get course by ID
+router.get("/:id", async (req, res) => {
+  try {
+    const course = await Course.findOne({ courseId: req.params.id });
+    if (!course) {
+      return res.status(404).json({ error: "Course not found" });
+    }
+    res.json(course);
+  } catch (error) {
+    console.error("Error fetching course:", error);
+    res.status(500).json({ error: "Failed to fetch course" });
+  }
+});
+
+module.exports = router;