feat: add invoice download action (#3424)

Author: uds5501

app/controllers/event-invoice/paid.js

@@ -0,0 +1,24 @@
+import Controller from '@ember/controller';
+import { action } from '@ember/object';
+
+export default class extends Controller {
+  @action
+  async downloadEventInvoice(eventName, orderId) {
+    this.set('isLoading', true);
+    try {
+      const result = this.loader.downloadFile(`/events/invoices/${this.orderId}`);
+      const anchor = document.createElement('a');
+      anchor.style.display = 'none';
+      anchor.href = URL.createObjectURL(new Blob([result], { type: 'application/pdf' }));
+      anchor.download = `${eventName}-EventInvoice-${orderId}.pdf`;
+      document.body.appendChild(anchor);
+      anchor.click();
+      this.notify.success(this.l10n.t('Here is your Event Invoice'));
+      document.body.removeChild(anchor);
+    } catch (e) {
+      console.warn(e);
+      this.notify.error(this.l10n.t('Unexpected error occurred.'));
+    }
+    this.set('isLoading', false);
+  }
+}