chore(backend): Aanpassingen Dwengo Learning-Object-Repository

Processing uit Dwengo Learning-Object-Repository geconverteerd naar TypeScript en aangepast aan onze app.

Functionaliteit van Dwengo Learning-Object-Repository in ons project gekopiëerd en deels aanBestanden die enkel types of interfaces exporteren hernoemd naar *.d.tsgepast aan TypeScript en ons project.

backend/src/data/content/attachment-repository.ts

@@ -1,15 +1,40 @@
 import { DwengoEntityRepository } from '../dwengo-entity-repository.js';
 import { Attachment } from '../../entities/content/attachment.entity.js';
-import { LearningObject } from '../../entities/content/learning-object.entity.js';
+import {Language} from "../../entities/content/language";
+import {LearningObjectIdentifier} from "../../entities/content/learning-object-identifier";
 
 export class AttachmentRepository extends DwengoEntityRepository<Attachment> {
-    public findByLearningObjectAndNumber(
-        learningObject: LearningObject,
-        sequenceNumber: number
-    ) {
+    public findByLearningObjectIdAndName(
+        learningObjectId: LearningObjectIdentifier,
+        name: string
+    ): Promise<Attachment | null> {
         return this.findOne({
-            learningObject: learningObject,
-            sequenceNumber: sequenceNumber,
+            learningObject: {
+                hruid: learningObjectId.hruid,
+                language: learningObjectId.language,
+                version: learningObjectId.version,
+            },
+            name: name,
+        });
+    }
+
+    public findByMostRecentVersionOfLearningObjectAndName(
+        hruid: string,
+        language: Language,
+        attachmentName: string
+    ): Promise<Attachment | null> {
+        return this.findOne({
+            learningObject: {
+                hruid: hruid,
+                language: language
+            },
+            name: attachmentName
+        }, {
+            orderBy: {
+                learningObject: {
+                    version: 'DESC'
+                }
+            }
         });
     }
     // This repository is read-only for now since creating own learning object is an extension feature.