import { Component } from '@angular/core';
import { BreakpointObserver, Breakpoints } from '@angular/cdk/layout';
import { Observable } from 'rxjs';
import { map, shareReplay } from 'rxjs/operators';
import { TokenService } from '../token.service';
import { NavigationEnd, Router } from '@angular/router';

@Component({
  selector: 'app-navigation',
  templateUrl: './navigation.component.html',
  styleUrls: ['./navigation.component.css']
})
export class NavigationComponent {

  public authenticated: boolean

  isHandset$: Observable<boolean> = this.breakpointObserver.observe(Breakpoints.Handset)
    .pipe(
      map(result => result.matches),
      shareReplay()
    );

  constructor(
    private breakpointObserver: BreakpointObserver, 
    private tokenService: TokenService,
    private router: Router) {
    this.router.events.subscribe((e: any) => {
      if (e instanceof NavigationEnd) {
        this.authenticated = this.tokenService.checkAuthenticated()
      }
    })
  }

  ngOnInit() {
    this.authenticated = this.tokenService.checkAuthenticated()
  }

}