import { Component, OnDestroy, OnInit } from '@angular/core';
import { Router } from '@angular/router';
import { OidcSecurityService } from 'angular-auth-oidc-client';

@Component({
    selector: 'app-root',
    templateUrl: 'app.component.html',
})
export class AppComponent implements OnInit, OnDestroy {
    constructor(public oidcSecurityService: OidcSecurityService, private router: Router) {}

    ngOnInit() {
        this.oidcSecurityService
            .checkAuth()

            .subscribe((isAuthenticated) => {
                if (!isAuthenticated) {
                    if ('/autologin' !== window.location.pathname) {
                        this.write('redirect', window.location.pathname);
                        this.router.navigate(['/autologin']);
                    }
                }
                if (isAuthenticated) {
                    this.navigateToStoredEndpoint();
                }
            });
    }

    ngOnDestroy(): void {}

    private navigateToStoredEndpoint() {
        const path = this.read('redirect');

        if (this.router.url === path) {
            return;
        }

        if (path.toString().includes('/unauthorized')) {
            this.router.navigate(['/']);
        } else {
            this.router.navigate([path]);
        }
    }

    private read(key: string): any {
        const data = localStorage.getItem(key);
        if (data != null) {
            return JSON.parse(data);
        }

        return;
    }

    private write(key: string, value: any): void {
        localStorage.setItem(key, JSON.stringify(value));
    }
}