update

src/app/pages/login-totp/login-totp.component.ts

@@ -0,0 +1,54 @@
+import { Component, OnInit } from '@angular/core';
+import { FormBuilder, FormGroup, Validators } from '@angular/forms';
+import { AuthService } from '../../services/auth.service';
+import { Router, ActivatedRoute } from '@angular/router';
+
+import { environment } from '../../../environments/environment';
+
+@Component({
+  selector: 'app-login',
+  templateUrl: './login-totp.component.html',
+  styleUrls: ['./login-totp.component.scss']
+})
+export class LoginTotpComponent implements OnInit {
+
+  form: FormGroup;
+  public loginInvalid: boolean;
+  public apiUrl = environment.apiUrl;
+  targetRoute = '/account/info';
+
+  constructor(private formBuilder: FormBuilder, private authService: AuthService, private router: Router, private route: ActivatedRoute) { }
+
+
+  ngOnInit() {
+    this.form = this.formBuilder.group({
+      code: ['', Validators.required],
+      keep: ['']
+    });
+
+    this.route.queryParams.subscribe(params => {
+      if (params['target']) {
+        this.targetRoute = params['target'];
+      }
+    });
+  }
+
+  async loginTotp() {
+    this.loginInvalid = false;
+    if (this.form.valid) {
+
+      const totpModel = {
+        code: this.form.get('code').value,
+        keep: this.form.get('keep').value
+      };
+
+      this.authService.loginTotp(totpModel).subscribe((response: any) => {
+        this.router.navigate([this.targetRoute]);
+      }, error => {
+        this.loginInvalid = true;
+      });
+
+    }
+  }
+
+}