argos/dmp-frontend/src/app/unauthorized/unauthorized.component.ts

import { AuthService } from '../services/auth/auth.service';
import { Component, Input } from "@angular/core";
import { ActivatedRoute, Router } from "@angular/router";

@Component({
    selector: 'unauthorized-component',
    templateUrl: './unauthorized.component.html'
})
export class UnauthorizedComponent {
    @Input()
    public message: string;
    constructor(
        private authService: AuthService,
        private route: ActivatedRoute,
        private router: Router
    ) { }

    ngAfterViewInit() {
        let returnUrl = this.route.snapshot.queryParams['returnUrl'] || '/';
        let principal = this.authService.current();
        if (!principal) {
            this.router.navigate(['/login'], { queryParams: { returnUrl: returnUrl } });
        }
        else {
            this.authService.me().subscribe(
                principal => {
                    if (!principal) this.router.navigate(['/login'], { queryParams: { returnUrl: returnUrl } });
                    else this.router.navigate(["/"])
                },
                err => console.error('An error occurred', err));
        }
    }
}