SAP Spartacus -如何查找用户是否已登录

import { Component } from '@angular/core';
import { AuthService } from '@spartacus/core';

@Component({
  selector: 'app-my-component',
  template: `
    <div *ngIf="isLoggedIn">
      <!-- 显示用户个人资料和注销按钮 -->
      <p>Welcome, {{ username }}!</p>
      <button (click)="logout()">Logout</button>
    </div>
    <div *ngIf="!isLoggedIn">
      <!-- 显示登录表单或重定向到登录页面 -->
      <p>Please login to continue.</p>
      <button (click)="redirectToLogin()">Login</button>
    </div>
  `,
})
export class MyComponent {
  isLoggedIn: boolean;
  username: string;

  constructor(private authService: AuthService) {}

  ngOnInit() {
    this.isLoggedIn = this.authService.isUserLoggedIn();
    this.username = this.authService.getUsername();
  }

  logout() {
    this.authService.logout();
  }

  redirectToLogin() {
    // 重定向到登录页面的代码
  }
}