feat: teacher invitation databank api verbinding aangemaakt, bug in data repo waar teacher invitation repo niet juist werd teruggegeven gefixt

backend/src/interfaces/teacher-invitation.ts

@@ -0,0 +1,25 @@
+import { TeacherInvitation } from "../entities/classes/teacher-invitation.entity";
+import { ClassDTO, mapToClassDTO } from "./classes";
+import { mapToTeacherDTO, TeacherDTO } from "./teacher";
+
+export interface TeacherInvitationDTO {
+    sender: string | TeacherDTO,
+    receiver: string | TeacherDTO,
+    class: string | ClassDTO,
+}
+
+export function mapToTeacherInvitationDTO(invitation: TeacherInvitation): TeacherInvitationDTO {
+    return {
+        sender: mapToTeacherDTO(invitation.sender),
+        receiver: mapToTeacherDTO(invitation.receiver),
+        class: mapToClassDTO(invitation.class),
+    };
+}
+
+export function mapToTeacherInvitationDTOIds(invitation: TeacherInvitation): TeacherInvitationDTO {
+    return {
+        sender: invitation.sender.username,
+        receiver: invitation.receiver.username,
+        class: invitation.class.classId,
+    };
+}