WEB-233: Improve the OIDC integration with 2FA (#2602)

src/app/zitadel/callback/callback.component.ts

@@ -0,0 +1,26 @@
+import { Component, OnInit } from '@angular/core';
+import { ActivatedRoute } from '@angular/router';
+import { AuthService } from '../auth.service';
+
+@Component({
+  selector: 'mifosx-callback',
+  template: `<p>Processing callback...</p>`
+})
+export class CallbackComponent implements OnInit {
+  constructor(
+    private route: ActivatedRoute,
+    private authService: AuthService
+  ) {}
+
+  ngOnInit(): void {
+    this.route.queryParams.subscribe((params) => {
+      const code = params['code'];
+      if (code) {
+        const codeVerifier = localStorage.getItem('code_verifier');
+        this.authService.exchangeCodeForTokens(code, codeVerifier);
+      } else {
+        console.warn('No code was received in the URL');
+      }
+    });
+  }
+}