fix: juiste responsecodes en messages toegevoegd

backend/src/controllers/groups.ts

@@ -28,6 +28,11 @@ export async function getGroupHandler(req: Request<GroupParams>, res: Response):
 
     const group = await getGroup(classId, assignmentId, groupId, full);
 
+    if (!group) {
+        res.status(404).json({ error: 'Group not found' });
+        return;
+    }
+
     res.json(group);
 }
 

backend/src/controllers/questions.ts

@@ -76,10 +76,10 @@ export async function getQuestionAnswersHandler(req: Request, res: Response): Pr
         return;
     }
 
-    const answers = getAnswersByQuestion(questionId, full);
+    const answers = await getAnswersByQuestion(questionId, full);
 
     if (!answers) {
-        res.status(404).json({ error: `Questions not found.` });
+        res.status(404).json({ error: `Questions not found` });
     } else {
         res.json({ answers: answers });
     }
@@ -96,7 +96,7 @@ export async function createQuestionHandler(req: Request, res: Response): Promis
     const question = await createQuestion(questionDTO);
 
     if (!question) {
-        res.status(400).json({ error: 'Could not add question' });
+        res.status(400).json({ error: 'Could not create question' });
     } else {
         res.json(question);
     }

backend/src/controllers/students.ts

@@ -58,6 +58,14 @@ export async function createStudentHandler(req: Request, res: Response) {
     }
 
     const newUser = await createStudent(userData);
+
+    if (!newUser) {
+        res.status(500).json({
+            error: 'Something went wrong while creating student'
+        });
+        return;
+    }
+
     res.status(201).json(newUser);
 }
 

backend/src/controllers/teachers.ts

@@ -94,6 +94,11 @@ export async function getTeacherClassHandler(req: Request, res: Response): Promi
 
     const classes = await getClassesByTeacher(username, full);
 
+    if (!classes) {
+        res.status(404).json({ error: 'Teacher not found' });
+        return;
+    }
+
     res.json({ classes: classes });
 }
 
@@ -108,6 +113,11 @@ export async function getTeacherStudentHandler(req: Request, res: Response): Pro
 
     const students = await getStudentsByTeacher(username, full);
 
+    if (!students) {
+        res.status(404).json({ error: 'Teacher not found' });
+        return;
+    }
+
     res.json({ students: students });
 }
 
@@ -122,5 +132,10 @@ export async function getTeacherQuestionHandler(req: Request, res: Response): Pr
 
     const questions = await getQuestionsByTeacher(username, full);
 
+    if (!questions) {
+        res.status(404).json({ error: 'Teacher not found' });
+        return;
+    }
+
     res.json({ questions: questions });
 }