// User.service.ts
import {RequestOptions, Headers, Response, Http} from '@angular/http';

import {AppConfig} from '../../app.config';
import {tokenNotExpired, JwtHelper} from "angular2-jwt";
import {HttpClient} from './httpclient';

@Injectable()
export class UserService {
  jwtHelper: JwtHelper = new JwtHelper();
  // private session_valid: boolean = false;
  session_token: any;
  auth_token: string;
  auth_refresh_token: string;
  lang_locale_token: string;
  private loading: boolean;


  constructor(@Inject(forwardRef(() => HttpClient)) private httpClient: HttpClient,
              private http: Http
              private config: AppConfig) {
    // if session_token is not stored in your localStorage initialize client
    if (!localStorage.getItem('session_token')) {
      this.getInitClient();
    }
    // if token(auth_token) is expired, refresh both tokens (auth_token, auth_refresh_token)
    if (!tokenNotExpired('auth_token')) {
      this.refreshAuthToken();
    }
  }

  // Check if the User is loggedIn
  // Return True; if auth_token is not expired
  // Return False; if auth_token is expired
  loggedIn() {
    let token = localStorage.getItem('auth_token');
    console.log(this.jwtHelper.getTokenExpirationDate(token));

    return tokenNotExpired('auth_token');
  };
}


//Httpclient.ts
import {Injectable} from '@angular/core';
import {
  Http,
  Headers
} from '@angular/http';

@Injectable()
export class HttpClient {
  constructor(private http: Http) {
  }
sessionToken(headers: Headers) {
    headers.append('Accept', '*/*');
    headers.append('X-Requested-With', 'XMLHttpRequest');
    headers.append('LANG-LOCALE', localStorage.getItem('lang_locale_token'));
    headers.append('SESSION', localStorage.getItem('session_token'));

    if (localStorage.getItem('auth_token')) {
      headers.append('Authorization', 'Bearer' + localStorage.getItem('auth_token'));
    }
    if (!this.userService.loggedIn()) {
      headers.append('Authorization', 'Bearer' + localStorage.getItem('refresh_token'));
    }
  }

  get(url) {
    const headers = new Headers();
    this.sessionToken(headers);
    return this.http.get(url, {
      headers: headers
    });
  }

  post(url, data) {
    const headers = new Headers();
    this.sessionToken(headers);
    return this.http.post(url, data, {
      headers: headers
    });
  }
}