add viewer do task details

src/app/shared/API/middleware/middleware-service.service.ts

@@ -182,4 +182,19 @@ export class MiddlewareServiceService {
 
     return this.http.post<IuploadFileLK>(`${geturl}`, formData, options)
   }
+
+
+    GetViewer(DocId: string, FsId: string) {
+
+    const geturl = environment.apiURL + 'ecm/document/viewfile';
+    let params = new HttpParams();
+
+    params = params.set("docId", DocId);
+    params = params.set("applicationId", FsId);
+
+    let options = {
+      params: params
+    };
+    return this.http.get<string>(`${geturl}`, options);
+  }
 }