fix: import errors van gabe gefixt, teacher en student abstractie weggedaan

backend/src/interfaces/answer.ts

@@ -17,7 +17,7 @@ export function mapToAnswerDTO(answer: Answer): AnswerDTO {
     return {
         author: mapToUserDTO(answer.author),
         toQuestion: mapToQuestionDTO(answer.toQuestion),
-        sequenceNumber: answer.sequenceNumber,
+        sequenceNumber: answer.sequenceNumber!,
         timestamp: answer.timestamp.toISOString(),
         content: answer.content,
     };

backend/src/interfaces/question.ts

@@ -1,11 +1,13 @@
 import { Question } from '../entities/questions/question.entity.js';
 import {UserDTO} from "./user.js";
 import {LearningObjectIdentifier} from "../entities/content/learning-object-identifier.js";
+import { mapToStudentDTO, StudentDTO } from './student.js';
+import { TeacherDTO } from './teacher.js';
 
 export interface QuestionDTO {
     learningObjectIdentifier: LearningObjectIdentifier;
     sequenceNumber?: number;
-    author: UserDTO;
+    author: StudentDTO;
     timestamp?: string;
     content: string;
 }
@@ -23,7 +25,7 @@ export function mapToQuestionDTO(question: Question): QuestionDTO {
     return {
         learningObjectIdentifier,
         sequenceNumber: question.sequenceNumber!,
-        author: question.author,
+        author: mapToStudentDTO(question.author),
         timestamp: question.timestamp.toISOString(),
         content: question.content,
     };

backend/src/interfaces/student.ts

@@ -23,10 +23,11 @@ export function mapToStudentDTO(student: Student): StudentDTO {
 }
 
 export function mapToStudent(studentData: StudentDTO): Student {
-    const student = new Student();
-    student.username = studentData.username;
-    student.firstName = studentData.firstName;
-    student.lastName = studentData.lastName;
+    const student = new Student(
+        studentData.username,
+        studentData.firstName,
+        studentData.lastName,
+    );
 
     return student;
 }

backend/src/interfaces/submission.ts

@@ -8,7 +8,7 @@ import {Student} from "../entities/users/student.entity";
 export interface SubmissionDTO {
     learningObjectHruid: string,
     learningObjectLanguage: Language,
-    learningObjectVersion: string,
+    learningObjectVersion: number,
 
     submissionNumber?: number,
     submitter: StudentDTO,

backend/src/interfaces/teacher.ts

@@ -0,0 +1,33 @@
+import { Teacher } from '../entities/users/teacher.entity.js';
+
+export interface TeacherDTO {
+    id: string;
+    username: string;
+    firstName: string;
+    lastName: string;
+    endpoints?: {
+        classes: string;
+        questions: string;
+        invitations: string;
+        groups: string;
+    };
+}
+
+export function mapToTeacherDTO(teacher: Teacher): TeacherDTO {
+    return {
+        id: teacher.username,
+        username: teacher.username,
+        firstName: teacher.firstName,
+        lastName: teacher.lastName,
+    };
+}
+
+export function mapToTeacher(TeacherData: TeacherDTO): Teacher {
+    const teacher = new Teacher(
+        TeacherData.username,
+        TeacherData.firstName,
+        TeacherData.lastName,
+    );
+
+    return teacher;
+}