feat: class/:id service en controller laag geimplementeerd (BEVAT NOG BUG)

backend/src/controllers/classes.ts

@@ -0,0 +1,29 @@
+import { Request, Response } from 'express';
+import { getClass } from '../services/class';
+
+export async function getClassHandler(
+    req: Request,
+    res: Response,
+): Promise<void> {
+    try {
+        const classId = req.params.id;
+        const cls = await getClass(classId);
+
+        if (!cls) {
+            res.status(404).json({ error: "Student not found" });
+            return;
+        } else {
+            cls.endpoints = {
+                self: `${req.baseUrl}/${req.params.id}`,
+                invitations: `${req.baseUrl}/${req.params.id}/invitations`,
+                assignments: `${req.baseUrl}/${req.params.id}/assignments`,
+                students: `${req.baseUrl}/${req.params.id}/students`,
+            }
+
+            res.json(cls);
+        }
+    } catch (error) {
+        console.error('Error fetching learning objects:', error);
+        res.status(500).json({ error: 'Internal server error' });
+    }
+}

backend/src/interfaces/classes.ts

@@ -1,6 +1,4 @@
-import { ClassJoinRequest } from "../entities/classes/class-join-request.entity";
-import { Student } from "../entities/users/student.entity";
-import { Teacher } from "../entities/users/teacher.entity";
+import { Class } from "../entities/classes/class.entity";
 
 export interface ClassDTO {
     id: string;
@@ -9,9 +7,19 @@ export interface ClassDTO {
     students: string[];
     joinRequests: string[];
     endpoints?: {
-        classes: string;
-        questions: string;
+        self: string;
         invitations: string;
-        groups: string;
+        assignments: string;
+        students: string;
     };
 }
+
+export function mapToClassDTO(cls: Class): ClassDTO {
+    return {
+        id: cls.classId,
+        displayName: cls.displayName,
+        teachers: cls.teachers.map(teacher => teacher.username),
+        students: cls.students.map(student => student.username),
+        joinRequests: [], // TODO
+    }
+};

backend/src/routes/class.ts

@@ -1,4 +1,5 @@
 import express from 'express'
+import { getClassHandler } from '../controllers/classes';
 const router = express.Router();
 
 // root endpoint used to search objects
@@ -12,21 +13,7 @@ router.get('/', (req, res) => {
 });
 
 // information about an class with id 'id'
-router.get('/:id', (req, res) => {
-    res.json({
-        id: req.params.id,
-        displayName: 'Klas 4B',
-        teachers: [ '0' ],
-        students: [ '0' ],
-        joinRequests: [ '0' ],
-        endpoints: {
-            self: `${req.baseUrl}/${req.params.id}`,
-            classes: `${req.baseUrl}/${req.params.id}/invitations`,
-            questions: `${req.baseUrl}/${req.params.id}/assignments`,
-            students: `${req.baseUrl}/${req.params.id}/students`,
-        }
-    });
-})
+router.get('/:id', getClassHandler);
 
 router.get('/:id/invitations', (req, res) => {
     res.json({

backend/src/services/class.ts

@@ -0,0 +1,12 @@
+import { getClassRepository } from "../data/repositories";
+import { ClassDTO, mapToClassDTO } from "../interfaces/classes";
+
+export async function getClass(classId: string): Promise<ClassDTO | null> {
+    const classRepository = getClassRepository();
+    const cls = await classRepository.findById(classId);
+
+    if (!cls) return null;
+    else {
+        return mapToClassDTO(cls);
+    }
+}

backend/src/services/students.ts

@@ -1,6 +1,6 @@
 import { getClassRepository, getStudentRepository } from "../data/repositories";
 import { Class } from "../entities/classes/class.entity";
-import { ClassDTO } from "../interfaces/classes";
+import { ClassDTO, mapToClassDTO } from "../interfaces/classes";
 import { StudentDTO } from "../interfaces/students";
 
 export async function getAllStudents(): Promise<StudentDTO[]> {
@@ -46,20 +46,11 @@ async function fetchStudentClasses(username: string): Promise<Class[]> {
 
 export async function getStudentClasses(username: string): Promise<ClassDTO[]> {
     const classes = await fetchStudentClasses(username);
-
-    return classes.map((cls: Class): ClassDTO => {
-        return {
-            id: cls.classId,
-            displayName: cls.displayName,
-            teachers: cls.teachers.map(teacher => teacher.username),
-            students: cls.students.map(student => student.username),
-            joinRequests: [], // TODO
-        }
-    });
+    return classes.map(mapToClassDTO);
 }
 
 export async function getStudentClassIds(username: string): Promise<string[]> {
     const classes = await fetchStudentClasses(username);
-    return classes.map(cls => cls.classId); // class is a native keyword
+    return classes.map(cls => cls.classId); // 'class' is a native keyword
 }