feat: Unterstützung von asynchroner Dateneingabe für DocFullView Komponente

- DocFullView aktualisiert, um Daten als Uint8Array oder Promise<Uint8Array> zu akzeptieren
- Asynchrones Handling in useEffect hinzugefügt, um Daten vor der Erstellung der Objekt-URL aufzulösen
- Verbesserte Bereinigungslogik, um die Objekt-URL richtig zu widerrufen
- Geänderte Format-Prop ist nun erforderlich

src/client/dd-hub-react/src/sections/document/view/doc-full-view.tsx

@@ -26,8 +26,8 @@ const getMimeType = (format: FileFormat): string => {
 };
 
 type DocFullViewProps = {
-    data: Uint8Array;
-    format?: FileFormat;
+    data: Uint8Array | Promise<Uint8Array>;
+    format: FileFormat;
     open: boolean;
     handleClose: () => void;
 }
@@ -46,16 +46,31 @@ export default function DocFullView({ data, format, open, handleClose }: DocFull
     const [objectUrl, setObjectUrl] = useState<string | null>(null);
 
     useEffect(() => {
-        if (!data || !format)
-            return undefined;
+        let isMounted = true;
+        let url: string | null = null;
 
-        const mimeType = getMimeType(format);
-        const blob = new Blob([data], { type: mimeType });
-        const url = URL.createObjectURL(blob);
-        setObjectUrl(url);
+        const processData = async () => {
+            try {
+                const resolvedData = await data;
+                const mimeType = getMimeType(format);
+                const blob = new Blob([resolvedData], { type: mimeType });
+                url = URL.createObjectURL(blob);
+
+                if (isMounted) {
+                    setObjectUrl(url);
+                }
+            } catch (err) {
+                console.error('Data resolution error:', err);
+            }
+        };
+
+        processData();
 
         return () => {
-            URL.revokeObjectURL(url);
+            isMounted = false;
+            if (url) {
+                URL.revokeObjectURL(url);
+            }
         };
     }, [data, format]);
 

src/client/dd-hub-react/src/services/document-service.ts

@@ -1,4 +1,4 @@
-import { _documents } from "src/_mock"
+import { _documents, _genFile } from "src/_mock"
 
 export type FileFormat =
     | 'pdf'
@@ -37,13 +37,16 @@ export class Doc {
 
     id!: number;
     name!: string;
-    data!: Uint8Array;
     addedWhen!: Date;
     addedWho!: string;
     changedWhen?: Date;
     changedWho?: string;
     attributes: Array<DocAttribute> = [];
 
+    get data(): Promise<Uint8Array> {
+        return Promise.resolve(_genFile(this.name)!);
+    }
+
     getChangedInfo(separator: string = " | "): string | null {
         const who = this.changedWho?.trim();
         const when = this.changedWhen?.toLocaleDateString('de-DE');
@@ -55,7 +58,7 @@ export class Doc {
         return [who, when].filter(Boolean).join(separator);
     }
 
-    get extension(): FileFormat | undefined {
+    get extension(): FileFormat {
         const parts = this.name.split('.');
         if (parts.length > 1 && parts[parts.length - 1].trim() !== '') {
             const ext = parts[parts.length - 1].toLowerCase();
@@ -63,7 +66,7 @@ export class Doc {
             if (validExtensions.includes(ext as FileFormat))
                 return ext as FileFormat;
         }
-        return undefined;
+        throw new Error(`Invalid or missing file extension in filename: "${this.name}". Supported extensions are: ${validExtensions.join(', ')}.`);
     }
 
     get iconSrc(): string {