import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';

@Injectable({
  providedIn: 'root'
})
export class ApiAuthenticationService {
    private authenticated: boolean;
    private lastCheck: Date;

  constructor(private http: HttpClient) {
    this.authenticated = false;
    this.lastCheck = new Date();
  }

  isAuthenticated() {
    return this.authenticated;
  }

  update() {
    const jwt = localStorage.getItem('jwt');
    if (!jwt) {
        this.updateAuthenticated(false);
        return;
    }

    // /api/auth/jwt
    this.http.get('/api/auth/jwt', {
        headers: {
            'Authorization': 'Bearer ' + jwt
        }
    }).subscribe((data: any) => {
        console.log('jwt validation', data);
        this.updateAuthenticated(data?.authenticated);
    });
  }

  private updateAuthenticated(value: boolean) {
    this.authenticated = value;
    this.lastCheck = new Date();
  }
}