feat: POST method voor class geimplementeerd

backend/src/services/class.ts

@@ -1,7 +1,10 @@
 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 {
@@ -27,10 +30,39 @@ export async function getAllClasses(
         return classes.map(mapToClassDTO);
     }
     return classes.map((cls) => {
-        return cls.classId;
+        return cls.classId!;
     });
 }
 
+export async function createClass(classData: ClassDTO): Promise<Class | null> {
+    const teacherRepository = getTeacherRepository();
+    const teacherUsernames = classData.teachers || [];
+    const teachers = (await Promise.all(teacherUsernames.map(id => teacherRepository.findByUsername(id))))
+        .filter(teacher => teacher != null);
+
+    const studentRepository = getStudentRepository();
+    const studentUsernames = classData.students || [];
+    const students = (await Promise.all(studentUsernames.map(id => studentRepository.findByUsername(id))))
+        .filter(student => student != null);
+
+    //const cls = mapToClass(classData, teachers, students);
+
+    const classRepository = getClassRepository();
+
+    try {
+        const newClass = classRepository.create({
+            displayName: classData.displayName,
+            teachers: teachers,
+            students: students,
+        });
+        await classRepository.save(newClass);
+
+        return newClass;
+    } catch(e) {
+        return null;
+    }
+}
+
 export async function getClass(classId: string): Promise<ClassDTO | null> {
     const classRepository = getClassRepository();
     const cls = await classRepository.findById(classId);