import { Injectable } from '@angular/core';
import { HttpClient, HttpHeaders} from '@angular/common/http';
import { Observable } from 'rxjs/Observable';
import { Cookie } from 'ng2-cookies';
import  'rxjs/add/operator/map';

@Injectable()
export class AuthenticationService {
    constructor(private http: HttpClient){}

    login(username:string,password:string){
        return this.http.post<any>('/api/auth',{username:username,password:password},)
            .map(user => {
                //login successful if there a jwt token in the response
                if(user && user.token){
                    localStorage.setItem('currentUser',JSON.stringify(user));
                }
                return user;
            })
    }

    logout(){
        //remove user from local storage to log user out
        localStorage.removeItem('CurrentUser');
    }
}