Merge branch 'dev' into refactor/linting

backend/src/controllers/assignments.ts

@@ -37,7 +37,7 @@ export async function createAssignmentHandler(req: Request<AssignmentParams>, re
         return;
     }
 
-    res.status(201).json({ assignment: assignment });
+    res.status(201).json(assignment);
 }
 
 export async function getAssignmentHandler(req: Request<AssignmentParams>, res: Response): Promise<void> {
@@ -62,13 +62,14 @@ export async function getAssignmentHandler(req: Request<AssignmentParams>, res:
 export async function getAssignmentsSubmissionsHandler(req: Request<AssignmentParams>, res: Response): Promise<void> {
     const classid = req.params.classid;
     const assignmentNumber = Number(req.params.id);
+    const full = req.query.full === 'true';
 
     if (isNaN(assignmentNumber)) {
         res.status(400).json({ error: 'Assignment id must be a number' });
         return;
     }
 
-    const submissions = await getAssignmentsSubmissions(classid, assignmentNumber);
+    const submissions = await getAssignmentsSubmissions(classid, assignmentNumber, full);
 
     res.json({
         submissions: submissions,

backend/src/controllers/classes.ts

@@ -1,7 +1,6 @@
 import { Request, Response } from 'express';
-import { createClass, getAllClasses, getClass, getClassStudents, getClassStudentsIds, getClassTeacherInvitations } from '../services/class.js';
+import { createClass, getAllClasses, getClass, getClassStudents, getClassStudentsIds, getClassTeacherInvitations } from '../services/classes.js';
 import { ClassDTO } from '../interfaces/class.js';
-import { getLogger } from '../logging/initalize.js';
 
 export async function getAllClassesHandler(req: Request, res: Response): Promise<void> {
     const full = req.query.full === 'true';
@@ -29,30 +28,19 @@ export async function createClassHandler(req: Request, res: Response): Promise<v
         return;
     }
 
-    res.status(201).json({ class: cls });
+    res.status(201).json(cls);
 }
 
 export async function getClassHandler(req: Request, res: Response): Promise<void> {
-    try {
+    const classId = req.params.id;
-        const classId = req.params.id;
+    const cls = await getClass(classId);
-        const cls = await getClass(classId);
 
-        if (!cls) {
+    if (!cls) {
-            res.status(404).json({ error: 'Class not found' });
+        res.status(404).json({ error: 'Class not found' });
-            return;
+        return;
-        }
-        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) {
-        getLogger().error('Error fetching learning objects:', error);
-        res.status(500).json({ error: 'Internal server error' });
     }
+
+    res.json(cls);
 }
 
 export async function getClassStudentsHandler(req: Request, res: Response): Promise<void> {
@@ -68,7 +56,7 @@ export async function getClassStudentsHandler(req: Request, res: Response): Prom
 
 export async function getTeacherInvitationsHandler(req: Request, res: Response): Promise<void> {
     const classId = req.params.id;
-    const full = req.query.full === 'true'; // TODO: not implemented yet
+    const full = req.query.full === 'true';
 
     const invitations = await getClassTeacherInvitations(classId, full);
 

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);
 }
 
@@ -66,12 +71,12 @@ export async function createGroupHandler(req: Request, res: Response): Promise<v
         return;
     }
 
-    res.status(201).json({ group: group });
+    res.status(201).json(group);
 }
 
 export async function getGroupSubmissionsHandler(req: Request, res: Response): Promise<void> {
     const classId = req.params.classid;
-    // Const full = req.query.full === 'true';
+    const full = req.query.full === 'true';
 
     const assignmentId = Number(req.params.assignmentid);
 
@@ -87,7 +92,7 @@ export async function getGroupSubmissionsHandler(req: Request, res: Response): P
         return;
     }
 
-    const submissions = await getGroupSubmissions(classId, assignmentId, groupId);
+    const submissions = await getGroupSubmissions(classId, assignmentId, groupId, full);
 
     res.json({
         submissions: submissions,

backend/src/controllers/learning-objects.ts

@@ -40,7 +40,7 @@ export async function getAllLearningObjects(req: Request, res: Response): Promis
         learningObjects = await learningObjectService.getLearningObjectIdsFromPath(learningPathId);
     }
 
-    res.json(learningObjects);
+    res.json({ learningObjects: learningObjects });
 }
 
 export async function getLearningObject(req: Request, res: Response): Promise<void> {

backend/src/controllers/questions.ts

@@ -48,7 +48,7 @@ export async function getAllQuestionsHandler(req: Request, res: Response): Promi
     if (!questions) {
         res.status(404).json({ error: `Questions not found.` });
     } else {
-        res.json(questions);
+        res.json({ questions: questions });
     }
 }
 
@@ -76,12 +76,12 @@ 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);
+        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

@@ -10,21 +10,20 @@ import {
     getStudentSubmissions,
 } from '../services/students.js';
 import { StudentDTO } from '../interfaces/student.js';
-import { getLogger } from '../logging/initalize.js';
 
 // TODO: accept arguments (full, ...)
 // TODO: endpoints
 export async function getAllStudentsHandler(req: Request, res: Response): Promise<void> {
     const full = req.query.full === 'true';
 
-    const students: StudentDTO[] | string[] = full ? await getAllStudents() : await getAllStudents();
+    const students = await getAllStudents(full);
 
     if (!students) {
         res.status(404).json({ error: `Student not found.` });
         return;
     }
 
-    res.status(201).json(students);
+    res.json({ students: students });
 }
 
 export async function getStudentHandler(req: Request, res: Response): Promise<void> {
@@ -44,7 +43,7 @@ export async function getStudentHandler(req: Request, res: Response): Promise<vo
         return;
     }
 
-    res.status(201).json(user);
+    res.json(user);
 }
 
 export async function createStudentHandler(req: Request, res: Response): Promise<void> {
@@ -58,6 +57,14 @@ export async function createStudentHandler(req: Request, res: Response): Promise
     }
 
     const newUser = await createStudent(userData);
+
+    if (!newUser) {
+        res.status(500).json({
+            error: 'Something went wrong while creating student'
+        });
+        return;
+    }
+
     res.status(201).json(newUser);
 }
 
@@ -81,25 +88,12 @@ export async function deleteStudentHandler(req: Request, res: Response): Promise
 }
 
 export async function getStudentClassesHandler(req: Request, res: Response): Promise<void> {
-    try {
+    const full = req.query.full === 'true';
-        const full = req.query.full === 'true';
+    const username = req.params.id;
-        const username = req.params.id;
 
-        const classes = await getStudentClasses(username, full);
+    const classes = await getStudentClasses(username, full);
 
-        res.json({
+    res.json({ classes: classes });
-            classes: classes,
-            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`,
-            },
-        });
-    } catch (error) {
-        getLogger().error('Error fetching learning objects:', error);
-        res.status(500).json({ error: 'Internal server error' });
-    }
 }
 
 // TODO
@@ -130,8 +124,9 @@ export async function getStudentGroupsHandler(req: Request, res: Response): Prom
 
 export async function getStudentSubmissionsHandler(req: Request, res: Response): Promise<void> {
     const username = req.params.id;
+    const full = req.query.full === 'true';
 
-    const submissions = await getStudentSubmissions(username);
+    const submissions = await getStudentSubmissions(username, full);
 
     res.json({
         submissions: submissions,

backend/src/controllers/submissions.ts

@@ -36,10 +36,11 @@ export async function createSubmissionHandler(req: Request, res: Response): Prom
     const submission = await createSubmission(submissionDTO);
 
     if (!submission) {
-        res.status(404).json({ error: 'Submission not added' });
+        res.status(400).json({ error: 'Failed to create submission' });
-    } else {
+        return;
-        res.json(submission);
     }
+
+    res.json(submission);
 }
 
 export async function deleteSubmissionHandler(req: Request, res: Response): Promise<void> {
@@ -53,7 +54,8 @@ export async function deleteSubmissionHandler(req: Request, res: Response): Prom
 
     if (!submission) {
         res.status(404).json({ error: 'Submission not found' });
-    } else {
+        return;
-        res.json(submission);
     }
+
+    res.json(submission);
 }

backend/src/controllers/teachers.ts

@@ -4,30 +4,23 @@ import {
     deleteTeacher,
     getAllTeachers,
     getClassesByTeacher,
-    getClassIdsByTeacher,
-    getQuestionIdsByTeacher,
     getQuestionsByTeacher,
-    getStudentIdsByTeacher,
     getStudentsByTeacher,
     getTeacher,
 } from '../services/teachers.js';
-import { ClassDTO } from '../interfaces/class.js';
-import { StudentDTO } from '../interfaces/student.js';
-import { QuestionDTO, QuestionId } from '../interfaces/question.js';
 import { TeacherDTO } from '../interfaces/teacher.js';
-import { getLogger } from '../logging/initalize.js';
 
 export async function getAllTeachersHandler(req: Request, res: Response): Promise<void> {
     const full = req.query.full === 'true';
 
-    const teachers: TeacherDTO[] | string[] = full ? await getAllTeachers() : await getAllTeachers();
+    const teachers = await getAllTeachers(full);
 
     if (!teachers) {
         res.status(404).json({ error: `Teacher not found.` });
         return;
     }
 
-    res.status(201).json(teachers);
+    res.json({ teachers: teachers });
 }
 
 export async function getTeacherHandler(req: Request, res: Response): Promise<void> {
@@ -42,12 +35,12 @@ export async function getTeacherHandler(req: Request, res: Response): Promise<vo
 
     if (!user) {
         res.status(404).json({
-            error: `User with username '${username}' not found.`,
+            error: `Teacher '${username}' not found.`,
         });
         return;
     }
 
-    res.status(201).json(user);
+    res.json(user);
 }
 
 export async function createTeacherHandler(req: Request, res: Response): Promise<void> {
@@ -61,6 +54,12 @@ export async function createTeacherHandler(req: Request, res: Response): Promise
     }
 
     const newUser = await createTeacher(userData);
+
+    if (!newUser) {
+        res.status(400).json({ error: 'Failed to create teacher' });
+        return;
+    }
+
     res.status(201).json(newUser);
 }
 
@@ -75,7 +74,7 @@ export async function deleteTeacherHandler(req: Request, res: Response): Promise
     const deletedUser = await deleteTeacher(username);
     if (!deletedUser) {
         res.status(404).json({
-            error: `User with username '${username}' not found.`,
+            error: `User '${username}' not found.`,
         });
         return;
     }
@@ -84,58 +83,58 @@ export async function deleteTeacherHandler(req: Request, res: Response): Promise
 }
 
 export async function getTeacherClassHandler(req: Request, res: Response): Promise<void> {
-    try {
+    const username = req.params.username;
-        const username = req.params.username;
+    const full = req.query.full === 'true';
-        const full = req.query.full === 'true';
 
-        if (!username) {
+    if (!username) {
-            res.status(400).json({ error: 'Missing required field: username' });
+        res.status(400).json({ error: 'Missing required field: username' });
-            return;
+        return;
-        }
-
-        const classes: ClassDTO[] | string[] = full ? await getClassesByTeacher(username) : await getClassIdsByTeacher(username);
-
-        res.status(201).json(classes);
-    } catch (error) {
-        getLogger().error('Error fetching classes by teacher:', error);
-        res.status(500).json({ error: 'Internal server error' });
     }
+
+    const classes = await getClassesByTeacher(username, full);
+
+    if (!classes) {
+        res.status(404).json({ error: 'Teacher not found' });
+        return;
+    }
+
+    res.json({ classes: classes });
 }
 
 export async function getTeacherStudentHandler(req: Request, res: Response): Promise<void> {
-    try {
+    const username = req.params.username;
-        const username = req.params.username;
+    const full = req.query.full === 'true';
-        const full = req.query.full === 'true';
 
-        if (!username) {
+    if (!username) {
-            res.status(400).json({ error: 'Missing required field: username' });
+        res.status(400).json({ error: 'Missing required field: username' });
-            return;
+        return;
-        }
-
-        const students: StudentDTO[] | string[] = full ? await getStudentsByTeacher(username) : await getStudentIdsByTeacher(username);
-
-        res.status(201).json(students);
-    } catch (error) {
-        getLogger().error('Error fetching students by teacher:', error);
-        res.status(500).json({ error: 'Internal server error' });
     }
+
+    const students = await getStudentsByTeacher(username, full);
+
+    if (!students) {
+        res.status(404).json({ error: 'Teacher not found' });
+        return;
+    }
+
+    res.json({ students: students });
 }
 
 export async function getTeacherQuestionHandler(req: Request, res: Response): Promise<void> {
-    try {
+    const username = req.params.username;
-        const username = req.params.username;
+    const full = req.query.full === 'true';
-        const full = req.query.full === 'true';
 
-        if (!username) {
+    if (!username) {
-            res.status(400).json({ error: 'Missing required field: username' });
+        res.status(400).json({ error: 'Missing required field: username' });
-            return;
+        return;
-        }
-
-        const questions: QuestionDTO[] | QuestionId[] = full ? await getQuestionsByTeacher(username) : await getQuestionIdsByTeacher(username);
-
-        res.status(201).json(questions);
-    } catch (error) {
-        getLogger().error('Error fetching questions by teacher:', error);
-        res.status(500).json({ error: 'Internal server error' });
     }
+
+    const questions = await getQuestionsByTeacher(username, full);
+
+    if (!questions) {
+        res.status(404).json({ error: 'Teacher not found' });
+        return;
+    }
+
+    res.json({ questions: questions });
 }

backend/src/controllers/users.ts

@@ -1,92 +0,0 @@
-import { Request, Response } from 'express';
-import { UserService } from '../services/users.js';
-import { UserDTO } from '../interfaces/user.js';
-import { User } from '../entities/users/user.entity.js';
-import { getLogger } from '../logging/initalize.js';
-
-export async function getAllUsersHandler<T extends User>(req: Request, res: Response, service: UserService<T>): Promise<void> {
-    try {
-        const full = req.query.full === 'true';
-
-        const users: UserDTO[] | string[] = full ? await service.getAllUsers() : await service.getAllUserIds();
-
-        if (!users) {
-            res.status(404).json({ error: `Users not found.` });
-            return;
-        }
-
-        res.status(201).json(users);
-    } catch (error) {
-        getLogger().error('❌ Error fetching users:', error);
-        res.status(500).json({ error: 'Internal server error' });
-    }
-}
-
-export async function getUserHandler<T extends User>(req: Request, res: Response, service: UserService<T>): Promise<void> {
-    try {
-        const username = req.params.username;
-
-        if (!username) {
-            res.status(400).json({ error: 'Missing required field: username' });
-            return;
-        }
-
-        const user = await service.getUserByUsername(username);
-
-        if (!user) {
-            res.status(404).json({
-                error: `User with username '${username}' not found.`,
-            });
-            return;
-        }
-
-        res.status(201).json(user);
-    } catch (error) {
-        getLogger().error('❌ Error fetching users:', error);
-        res.status(500).json({ error: 'Internal server error' });
-    }
-}
-
-export async function createUserHandler<T extends User>(req: Request, res: Response, service: UserService<T>, userClass: new () => T): Promise<void> {
-    try {
-        getLogger().debug({ req: req });
-        const userData = req.body as UserDTO;
-
-        if (!userData.username || !userData.firstName || !userData.lastName) {
-            res.status(400).json({
-                error: 'Missing required fields: username, firstName, lastName',
-            });
-            return;
-        }
-
-        const newUser = await service.createUser(userData, userClass);
-        res.status(201).json(newUser);
-    } catch (error) {
-        getLogger().error('❌ Error creating user:', error);
-        res.status(500).json({ error: 'Internal server error' });
-    }
-}
-
-export async function deleteUserHandler<T extends User>(req: Request, res: Response, service: UserService<T>): Promise<void> {
-    try {
-        const username = req.params.username;
-
-        if (!username) {
-            res.status(400).json({ error: 'Missing required field: username' });
-            return;
-        }
-
-        const deletedUser = await service.deleteUser(username);
-        if (!deletedUser) {
-            res.status(404).json({
-                error: `User with username '${username}' not found.`,
-            });
-            return;
-        }
-
-        res.status(200).json(deletedUser);
-    } catch (error) {
-        getLogger().error('❌ Error deleting user:', error);
-        res.status(500).json({ error: 'Internal server error' });
-    }
-}

backend/src/entities/classes/class-join-request.entity.ts

@@ -3,6 +3,12 @@ import { Student } from '../users/student.entity.js';
 import { Class } from './class.entity.js';
 import { ClassJoinRequestRepository } from '../../data/classes/class-join-request-repository.js';
 
+export enum ClassJoinRequestStatus {
+    Open = 'open',
+    Accepted = 'accepted',
+    Declined = 'declined',
+}
+
 @Entity({
     repository: () => ClassJoinRequestRepository,
 })
@@ -21,10 +27,4 @@ export class ClassJoinRequest {
 
     @Enum(() => ClassJoinRequestStatus)
     status!: ClassJoinRequestStatus;
-}
+}
-
-export enum ClassJoinRequestStatus {
-    Open = 'open',
-    Accepted = 'accepted',
-    Declined = 'declined',
-}

backend/src/interfaces/class.ts

@@ -9,12 +9,6 @@ export interface ClassDTO {
     teachers: string[];
     students: string[];
     joinRequests: string[];
-    endpoints?: {
-        self: string;
-        invitations: string;
-        assignments: string;
-        students: string;
-    };
 }
 
 export function mapToClassDTO(cls: Class): ClassDTO {

backend/src/interfaces/submission.ts

@@ -2,11 +2,10 @@ import { Submission } from '../entities/assignments/submission.entity.js';
 import { Language } from '../entities/content/language.js';
 import { GroupDTO, mapToGroupDTO } from './group.js';
 import { mapToStudent, mapToStudentDTO, StudentDTO } from './student.js';
+import { LearningObjectIdentifier } from './learning-content.js';
 
 export interface SubmissionDTO {
-    learningObjectHruid: string;
+    learningObjectIdentifier: LearningObjectIdentifier;
-    learningObjectLanguage: Language;
-    learningObjectVersion: number;
 
     submissionNumber?: number;
     submitter: StudentDTO;
@@ -15,11 +14,21 @@ export interface SubmissionDTO {
     content: string;
 }
 
+export interface SubmissionDTOId {
+    learningObjectHruid: string;
+    learningObjectLanguage: Language;
+    learningObjectVersion: number;
+
+    submissionNumber?: number;
+}
+
 export function mapToSubmissionDTO(submission: Submission): SubmissionDTO {
     return {
-        learningObjectHruid: submission.learningObjectHruid,
+        learningObjectIdentifier: {
-        learningObjectLanguage: submission.learningObjectLanguage,
+            hruid: submission.learningObjectHruid,
-        learningObjectVersion: submission.learningObjectVersion,
+            language: submission.learningObjectLanguage,
+            version: submission.learningObjectVersion,
+        },
 
         submissionNumber: submission.submissionNumber,
         submitter: mapToStudentDTO(submission.submitter),
@@ -29,11 +38,21 @@ export function mapToSubmissionDTO(submission: Submission): SubmissionDTO {
     };
 }
 
+export function mapToSubmissionDTOId(submission: Submission): SubmissionDTOId {
+    return {
+        learningObjectHruid: submission.learningObjectHruid,
+        learningObjectLanguage: submission.learningObjectLanguage,
+        learningObjectVersion: submission.learningObjectVersion,
+
+        submissionNumber: submission.submissionNumber,
+    };
+}
+
 export function mapToSubmission(submissionDTO: SubmissionDTO): Submission {
     const submission = new Submission();
-    submission.learningObjectHruid = submissionDTO.learningObjectHruid;
+    submission.learningObjectHruid = submissionDTO.learningObjectIdentifier.hruid;
-    submission.learningObjectLanguage = submissionDTO.learningObjectLanguage;
+    submission.learningObjectLanguage = submissionDTO.learningObjectIdentifier.language;
-    submission.learningObjectVersion = submissionDTO.learningObjectVersion;
+    submission.learningObjectVersion = submissionDTO.learningObjectIdentifier.version!;
     // Submission.submissionNumber = submissionDTO.submissionNumber;
     submission.submitter = mapToStudent(submissionDTO.submitter);
     // Submission.submissionTime = submissionDTO.time;

backend/src/routes/router.ts

@@ -1,10 +1,7 @@
 import { Response, Router } from 'express';
 import studentRouter from './students.js';
-import groupRouter from './groups.js';
+import teacherRouter from './teachers.js';
-import assignmentRouter from './assignments.js';
-import submissionRouter from './submissions.js';
 import classRouter from './classes.js';
-import questionRouter from './questions.js';
 import authRouter from './auth.js';
 import themeRoutes from './themes.js';
 import learningPathRoutes from './learning-paths.js';
@@ -22,11 +19,8 @@ router.get('/', (_, res: Response) => {
 });
 
 router.use('/student', studentRouter /* #swagger.tags = ['Student'] */);
-router.use('/group', groupRouter /* #swagger.tags = ['Group'] */);
+router.use('/teacher', teacherRouter /* #swagger.tags = ['Teacher'] */);
-router.use('/assignment', assignmentRouter /* #swagger.tags = ['Assignment'] */);
-router.use('/submission', submissionRouter /* #swagger.tags = ['Submission'] */);
 router.use('/class', classRouter /* #swagger.tags = ['Class'] */);
-router.use('/question', questionRouter /* #swagger.tags = ['Question'] */);
 router.use('/auth', authRouter /* #swagger.tags = ['Auth'] */);
 router.use('/theme', themeRoutes /* #swagger.tags = ['Theme'] */);
 router.use('/learningPath', learningPathRoutes /* #swagger.tags = ['Learning Path'] */);

backend/src/services/assignments.ts

@@ -1,7 +1,7 @@
 import { getAssignmentRepository, getClassRepository, getGroupRepository, getSubmissionRepository } from '../data/repositories.js';
-import { Assignment } from '../entities/assignments/assignment.entity.js';
 import { AssignmentDTO, mapToAssignment, mapToAssignmentDTO, mapToAssignmentDTOId } from '../interfaces/assignment.js';
-import { mapToSubmissionDTO, SubmissionDTO } from '../interfaces/submission.js';
+import { mapToSubmissionDTO, mapToSubmissionDTOId, SubmissionDTO, SubmissionDTOId } from '../interfaces/submission.js';
+import { getLogger } from '../logging/initalize.js';
 
 export async function getAllAssignments(classid: string, full: boolean): Promise<AssignmentDTO[]> {
     const classRepository = getClassRepository();
@@ -21,7 +21,7 @@ export async function getAllAssignments(classid: string, full: boolean): Promise
     return assignments.map(mapToAssignmentDTOId);
 }
 
-export async function createAssignment(classid: string, assignmentData: AssignmentDTO): Promise<Assignment | null> {
+export async function createAssignment(classid: string, assignmentData: AssignmentDTO): Promise<AssignmentDTO | null> {
     const classRepository = getClassRepository();
     const cls = await classRepository.findById(classid);
 
@@ -36,8 +36,9 @@ export async function createAssignment(classid: string, assignmentData: Assignme
         const newAssignment = assignmentRepository.create(assignment);
         await assignmentRepository.save(newAssignment);
 
-        return newAssignment;
+        return mapToAssignmentDTO(newAssignment);
-    } catch (_) {
+    } catch (e) {
+        getLogger().error(e);
         return null;
     }
 }
@@ -60,7 +61,11 @@ export async function getAssignment(classid: string, id: number): Promise<Assign
     return mapToAssignmentDTO(assignment);
 }
 
-export async function getAssignmentsSubmissions(classid: string, assignmentNumber: number): Promise<SubmissionDTO[]> {
+export async function getAssignmentsSubmissions(
+    classid: string,
+    assignmentNumber: number,
+    full: boolean
+): Promise<SubmissionDTO[] | SubmissionDTOId[]> {
     const classRepository = getClassRepository();
     const cls = await classRepository.findById(classid);
 
@@ -81,5 +86,9 @@ export async function getAssignmentsSubmissions(classid: string, assignmentNumbe
     const submissionRepository = getSubmissionRepository();
     const submissions = (await Promise.all(groups.map(async (group) => submissionRepository.findAllSubmissionsForGroup(group)))).flat();
 
-    return submissions.map(mapToSubmissionDTO);
+    if (full) {
+        return submissions.map(mapToSubmissionDTO);
+    }
+
+    return submissions.map(mapToSubmissionDTOId);
 }

backend/src/services/classes.ts

@@ -1,5 +1,4 @@
 import { getClassRepository, getStudentRepository, getTeacherInvitationRepository, getTeacherRepository } from '../data/repositories.js';
-import { Class } from '../entities/classes/class.entity.js';
 import { ClassDTO, mapToClassDTO } from '../interfaces/class.js';
 import { mapToStudentDTO, StudentDTO } from '../interfaces/student.js';
 import { mapToTeacherInvitationDTO, mapToTeacherInvitationDTOIds, TeacherInvitationDTO } from '../interfaces/teacher-invitation.js';
@@ -21,7 +20,7 @@ export async function getAllClasses(full: boolean): Promise<ClassDTO[] | string[
     return classes.map((cls) => cls.classId!);
 }
 
-export async function createClass(classData: ClassDTO): Promise<Class | null> {
+export async function createClass(classData: ClassDTO): Promise<ClassDTO | null> {
     const teacherRepository = getTeacherRepository();
     const teacherUsernames = classData.teachers || [];
     const teachers = (await Promise.all(teacherUsernames.map(async (id) => teacherRepository.findByUsername(id)))).filter(
@@ -34,8 +33,6 @@ export async function createClass(classData: ClassDTO): Promise<Class | null> {
         (student) => student !== null
     );
 
-    //Const cls = mapToClass(classData, teachers, students);
-
     const classRepository = getClassRepository();
 
     try {
@@ -46,7 +43,7 @@ export async function createClass(classData: ClassDTO): Promise<Class | null> {
         });
         await classRepository.save(newClass);
 
-        return newClass;
+        return mapToClassDTO(newClass);
     } catch (e) {
         logger.error(e);
         return null;

backend/src/services/groups.ts

@@ -7,7 +7,7 @@ import {
 } from '../data/repositories.js';
 import { Group } from '../entities/assignments/group.entity.js';
 import { GroupDTO, mapToGroupDTO, mapToGroupDTOId } from '../interfaces/group.js';
-import { mapToSubmissionDTO, SubmissionDTO } from '../interfaces/submission.js';
+import { mapToSubmissionDTO, mapToSubmissionDTOId, SubmissionDTO, SubmissionDTOId } from '../interfaces/submission.js';
 import { getLogger } from '../logging/initalize.js';
 
 export async function getGroup(classId: string, assignmentNumber: number, groupNumber: number, full: boolean): Promise<GroupDTO | null> {
@@ -104,7 +104,12 @@ export async function getAllGroups(classId: string, assignmentNumber: number, fu
     return groups.map(mapToGroupDTOId);
 }
 
-export async function getGroupSubmissions(classId: string, assignmentNumber: number, groupNumber: number): Promise<SubmissionDTO[]> {
+export async function getGroupSubmissions(
+    classId: string,
+    assignmentNumber: number,
+    groupNumber: number,
+    full: boolean
+): Promise<SubmissionDTO[] | SubmissionDTOId[]> {
     const classRepository = getClassRepository();
     const cls = await classRepository.findById(classId);
 
@@ -129,5 +134,9 @@ export async function getGroupSubmissions(classId: string, assignmentNumber: num
     const submissionRepository = getSubmissionRepository();
     const submissions = await submissionRepository.findAllSubmissionsForGroup(group);
 
-    return submissions.map(mapToSubmissionDTO);
+    if (full) {
+        return submissions.map(mapToSubmissionDTO);
+    }
+
+    return submissions.map(mapToSubmissionDTOId);
 }

backend/src/services/learning-objects.ts

@@ -46,6 +46,13 @@ export async function getLearningObjectById(hruid: string, language: string): Pr
     return filterData(metadata, htmlUrl);
 }
 
+/**
+ * Generic function to fetch learning paths
+ */
+function fetchLearningPaths(_arg0: string[], _language: string, _arg2: string): LearningPathResponse | PromiseLike<LearningPathResponse> {
+    throw new Error('Function not implemented.');
+}
+
 /**
  * Generic function to fetch learning objects (full data or just HRUIDs)
  */
@@ -86,6 +93,3 @@ export async function getLearningObjectsFromPath(hruid: string, language: string
 export async function getLearningObjectIdsFromPath(hruid: string, language: string): Promise<string[]> {
     return (await fetchLearningObjects(hruid, false, language)) as string[];
 }
-function fetchLearningPaths(_arg0: string[], _language: string, _arg2: string): LearningPathResponse | PromiseLike<LearningPathResponse> {
-    throw new Error('Function not implemented.');
-}

backend/src/services/questions.ts

@@ -86,7 +86,7 @@ export async function createQuestion(questionDTO: QuestionDTO): Promise<Question
     return questionDTO;
 }
 
-export async function deleteQuestion(questionId: QuestionId): Promise<Question | null> {
+export async function deleteQuestion(questionId: QuestionId): Promise<QuestionDTO | null> {
     const questionRepository = getQuestionRepository();
 
     const question = await fetchQuestion(questionId);
@@ -101,5 +101,5 @@ export async function deleteQuestion(questionId: QuestionId): Promise<Question |
         return null;
     }
 
-    return question;
+    return mapToQuestionDTO(question);
 }

backend/src/services/students.ts

@@ -1,21 +1,26 @@
-import { getClassRepository, getGroupRepository, getStudentRepository, getSubmissionRepository } from '../data/repositories.js';
+import {
+    getClassRepository,
+    getGroupRepository,
+    getStudentRepository,
+    getSubmissionRepository,
+} from '../data/repositories.js';
 import { AssignmentDTO } from '../interfaces/assignment.js';
 import { ClassDTO, mapToClassDTO } from '../interfaces/class.js';
 import { GroupDTO, mapToGroupDTO, mapToGroupDTOId } from '../interfaces/group.js';
 import { mapToStudent, mapToStudentDTO, StudentDTO } from '../interfaces/student.js';
-import { mapToSubmissionDTO, SubmissionDTO } from '../interfaces/submission.js';
+import { mapToSubmissionDTO, mapToSubmissionDTOId, SubmissionDTO, SubmissionDTOId } from '../interfaces/submission.js';
 import { getAllAssignments } from './assignments.js';
 import { getLogger } from '../logging/initalize.js';
 
-export async function getAllStudents(): Promise<StudentDTO[]> {
+export async function getAllStudents(full: boolean): Promise<StudentDTO[] | string[]> {
     const studentRepository = getStudentRepository();
-    const users = await studentRepository.findAll();
+    const students = await studentRepository.findAll();
-    return users.map(mapToStudentDTO);
-}
 
-export async function getAllStudentIds(): Promise<string[]> {
+    if (full) {
-    const users = await getAllStudents();
+        return students.map(mapToStudentDTO);
-    return users.map((user) => user.username);
+    }
+
+    return students.map((student) => student.username);
 }
 
 export async function getStudent(username: string): Promise<StudentDTO | null> {
@@ -86,9 +91,7 @@ export async function getStudentAssignments(username: string, full: boolean): Pr
     const classRepository = getClassRepository();
     const classes = await classRepository.findByStudent(student);
 
-    const assignments = (await Promise.all(classes.map(async (cls) => await getAllAssignments(cls.classId!, full)))).flat();
+    return (await Promise.all(classes.map(async (cls) => await getAllAssignments(cls.classId!, full)))).flat();
-
-    return assignments;
 }
 
 export async function getStudentGroups(username: string, full: boolean): Promise<GroupDTO[]> {
@@ -109,7 +112,7 @@ export async function getStudentGroups(username: string, full: boolean): Promise
     return groups.map(mapToGroupDTOId);
 }
 
-export async function getStudentSubmissions(username: string): Promise<SubmissionDTO[]> {
+export async function getStudentSubmissions(username: string, full: boolean): Promise<SubmissionDTO[] | SubmissionDTOId[]> {
     const studentRepository = getStudentRepository();
     const student = await studentRepository.findByUsername(username);
 
@@ -120,5 +123,9 @@ export async function getStudentSubmissions(username: string): Promise<Submissio
     const submissionRepository = getSubmissionRepository();
     const submissions = await submissionRepository.findAllSubmissionsForStudent(student);
 
-    return submissions.map(mapToSubmissionDTO);
+    if (full) {
+        return submissions.map(mapToSubmissionDTO);
+    }
+
+    return submissions.map(mapToSubmissionDTOId);
 }

backend/src/services/submissions.ts

@@ -2,7 +2,6 @@ import { getSubmissionRepository } from '../data/repositories.js';
 import { Language } from '../entities/content/language.js';
 import { LearningObjectIdentifier } from '../entities/content/learning-object-identifier.js';
 import { mapToSubmission, mapToSubmissionDTO, SubmissionDTO } from '../interfaces/submission.js';
-import { Submission } from '../entities/assignments/submission.entity.js';
 
 export async function getSubmission(
     learningObjectHruid: string,
@@ -22,7 +21,7 @@ export async function getSubmission(
     return mapToSubmissionDTO(submission);
 }
 
-export async function createSubmission(submissionDTO: SubmissionDTO): Promise<Submission | null> {
+export async function createSubmission(submissionDTO: SubmissionDTO): Promise<SubmissionDTO | null> {
     const submissionRepository = getSubmissionRepository();
     const submission = mapToSubmission(submissionDTO);
 
@@ -33,7 +32,7 @@ export async function createSubmission(submissionDTO: SubmissionDTO): Promise<Su
         return null;
     }
 
-    return submission;
+    return mapToSubmissionDTO(submission);
 }
 
 export async function deleteSubmission(

backend/src/services/teachers.ts

@@ -1,20 +1,25 @@
-import { getClassRepository, getLearningObjectRepository, getQuestionRepository, getTeacherRepository } from '../data/repositories.js';
+import {
+    getClassRepository,
+    getLearningObjectRepository,
+    getQuestionRepository,
+    getTeacherRepository,
+} from '../data/repositories.js';
 import { ClassDTO, mapToClassDTO } from '../interfaces/class.js';
-import { getClassStudents } from './class.js';
+import { getClassStudents } from './classes.js';
 import { StudentDTO } from '../interfaces/student.js';
 import { mapToQuestionDTO, mapToQuestionId, QuestionDTO, QuestionId } from '../interfaces/question.js';
 import { mapToTeacher, mapToTeacherDTO, TeacherDTO } from '../interfaces/teacher.js';
 import { getLogger } from '../logging/initalize.js';
 
-export async function getAllTeachers(): Promise<TeacherDTO[]> {
+export async function getAllTeachers(full: boolean): Promise<TeacherDTO[] | string[]> {
     const teacherRepository = getTeacherRepository();
-    const users = await teacherRepository.findAll();
+    const teachers = await teacherRepository.findAll();
-    return users.map(mapToTeacherDTO);
-}
 
-export async function getAllTeacherIds(): Promise<string[]> {
+    if (full) {
-    const users = await getAllTeachers();
+        return teachers.map(mapToTeacherDTO);
-    return users.map((user) => user.username);
+    }
+
+    return teachers.map((teacher) => teacher.username);
 }
 
 export async function getTeacher(username: string): Promise<TeacherDTO | null> {
@@ -56,11 +61,11 @@ export async function deleteTeacher(username: string): Promise<TeacherDTO | null
     }
 }
 
-export async function fetchClassesByTeacher(username: string): Promise<ClassDTO[]> {
+export async function fetchClassesByTeacher(username: string): Promise<ClassDTO[] | null> {
     const teacherRepository = getTeacherRepository();
     const teacher = await teacherRepository.findByUsername(username);
     if (!teacher) {
-        return [];
+        return null;
     }
 
     const classRepository = getClassRepository();
@@ -68,35 +73,49 @@ export async function fetchClassesByTeacher(username: string): Promise<ClassDTO[
     return classes.map(mapToClassDTO);
 }
 
-export async function getClassesByTeacher(username: string): Promise<ClassDTO[]> {
+export async function getClassesByTeacher(username: string, full: boolean): Promise<ClassDTO[] | string[] | null> {
-    return await fetchClassesByTeacher(username);
-}
-
-export async function getClassIdsByTeacher(username: string): Promise<string[]> {
     const classes = await fetchClassesByTeacher(username);
+
+    if (!classes) {
+        return null;
+    }
+
+    if (full) {
+        return classes;
+    }
+
     return classes.map((cls) => cls.id);
 }
 
-export async function fetchStudentsByTeacher(username: string): Promise<StudentDTO[]> {
+export async function fetchStudentsByTeacher(username: string): Promise<StudentDTO[] | null> {
-    const classes = await getClassIdsByTeacher(username);
+    const classes = (await getClassesByTeacher(username, false)) as string[];
+
+    if (!classes) {
+        return null;
+    }
 
     return (await Promise.all(classes.map(async (id) => getClassStudents(id)))).flat();
 }
 
-export async function getStudentsByTeacher(username: string): Promise<StudentDTO[]> {
+export async function getStudentsByTeacher(username: string, full: boolean): Promise<StudentDTO[] | string[] | null> {
-    return await fetchStudentsByTeacher(username);
-}
-
-export async function getStudentIdsByTeacher(username: string): Promise<string[]> {
     const students = await fetchStudentsByTeacher(username);
+
+    if (!students) {
+        return null;
+    }
+
+    if (full) {
+        return students;
+    }
+
     return students.map((student) => student.username);
 }
 
-export async function fetchTeacherQuestions(username: string): Promise<QuestionDTO[]> {
+export async function fetchTeacherQuestions(username: string): Promise<QuestionDTO[] | null> {
     const teacherRepository = getTeacherRepository();
     const teacher = await teacherRepository.findByUsername(username);
     if (!teacher) {
-        throw new Error(`Teacher with username '${username}' not found.`);
+        return null;
     }
 
     // Find all learning objects that this teacher manages
@@ -110,12 +129,16 @@ export async function fetchTeacherQuestions(username: string): Promise<QuestionD
     return questions.map(mapToQuestionDTO);
 }
 
-export async function getQuestionsByTeacher(username: string): Promise<QuestionDTO[]> {
+export async function getQuestionsByTeacher(username: string, full: boolean): Promise<QuestionDTO[] | QuestionId[] | null> {
-    return await fetchTeacherQuestions(username);
-}
-
-export async function getQuestionIdsByTeacher(username: string): Promise<QuestionId[]> {
     const questions = await fetchTeacherQuestions(username);
 
+    if (!questions) {
+        return null;
+    }
+
+    if (full) {
+        return questions;
+    }
+
     return questions.map(mapToQuestionId);
 }

backend/src/services/users.ts

@@ -1,41 +0,0 @@
-import { UserRepository } from '../data/users/user-repository.js';
-import { UserDTO, mapToUser, mapToUserDTO } from '../interfaces/user.js';
-import { User } from '../entities/users/user.entity.js';
-
-export class UserService<T extends User> {
-    protected repository: UserRepository<T>;
-
-    constructor(repository: UserRepository<T>) {
-        this.repository = repository;
-    }
-
-    async getAllUsers(): Promise<UserDTO[]> {
-        const users = await this.repository.findAll();
-        return users.map(mapToUserDTO);
-    }
-
-    async getAllUserIds(): Promise<string[]> {
-        const users = await this.getAllUsers();
-        return users.map((user) => user.username);
-    }
-
-    async getUserByUsername(username: string): Promise<UserDTO | null> {
-        const user = await this.repository.findByUsername(username);
-        return user ? mapToUserDTO(user) : null;
-    }
-
-    async createUser(userData: UserDTO, userClass: new () => T): Promise<T> {
-        const newUser = mapToUser(userData, new userClass());
-        await this.repository.save(newUser);
-        return newUser;
-    }
-
-    async deleteUser(username: string): Promise<UserDTO | null> {
-        const user = await this.getUserByUsername(username);
-        if (!user) {
-            return null;
-        }
-        await this.repository.deleteByUsername(username);
-        return mapToUserDTO(user);
-    }
-}