Handle empty response when status 204

apps/mina-sidor-fa/src/app/shared/models/export.model.ts

@@ -0,0 +1,4 @@
+export interface Export {
+  blob?: Blob;
+  empty: boolean;
+}

apps/mina-sidor-fa/src/app/shared/services/api/export.api.service.ts

@@ -1,12 +1,13 @@
-import { HttpClient } from '@angular/common/http';
+import { HttpClient, HttpResponse } from '@angular/common/http';
 import { Injectable } from '@angular/core';
 import { Params } from '@angular/router';
 import { ErrorType } from '@msfa-enums/error-type.enum';
 import { environment } from '@msfa-environment';
 import { DeltagareExportRequest } from '@msfa-models/api/deltagare-export.request.model';
 import { CustomError } from '@msfa-models/error/custom-error';
+import { Export } from '@msfa-models/export.model';
 import { Observable } from 'rxjs';
-import { catchError } from 'rxjs/operators';
+import { catchError, map } from 'rxjs/operators';
 
 @Injectable({
   providedIn: 'root',
@@ -16,15 +17,22 @@ export class ExportApiService {
 
   constructor(private httpClient: HttpClient) {}
 
-  public fetchDeltagareExportFile$(requestData: DeltagareExportRequest): Observable<Blob> {
+  public fetchDeltagareExportFile$(requestData: DeltagareExportRequest): Observable<Export> {
     const params: Params = {
       ...requestData,
       includeExportedDeltagare: requestData.includeExportedDeltagare.toString(),
     };
 
     return this.httpClient
-      .get<Blob>(`${this._apiBaseUrl}/deltagare`, { params, responseType: 'blob' as 'json' })
+      .get(`${this._apiBaseUrl}/deltagare`, {
+        params,
+        observe: 'response',
+        responseType: 'blob' as 'json',
+      })
       .pipe(
+        map((response: HttpResponse<Blob>) => {
+          return response.status === 204 ? { empty: true } : { empty: false, blob: response.body };
+        }),
         catchError((error: Error) => {
           throw new CustomError({
             error,