4. login.service

imports

import { Http, Response, Headers, RequestOptions } from '@angular/http';
import { Injectable } from '@angular/core';
import { Observable } from 'rxjs/Rx';


import { User } from './user.model';


@Injectable()
export class LoginService {

    private _endpointUrl: string = "http://127.0.0.1:8080/";

    constructor(private _http: Http) {

    }

    login(user: any): Observable<string> {

        var headers = new Headers();
        headers.append('Content-Type', 'application/json');

        let body = JSON.stringify(user);
     

        let msg = this._http
            .post(this._endpointUrl + "user/login", body, { headers: headers })
            .map(
                res => {
                    if (res.status == 202) {
                        console.log("200 " + res.json() || {});
                        console.log('+++++++++++++++++++++++++++ '+res.json().userName);
                        return res.json().userName;

                    } else{
                        console.log("406 " + res.json);
                        return "Login Denied";
                    }
                }
            )
            .catch(handleError);

        return msg;

    }

}


function handleError(error: any) {
    // log error
    // could be something more sofisticated
    console.log("handling the error");
    let errorMsg = error.message || `Yikes! There was was a problem with our hyperdrive device and we couldn't retrieve your data!`;
    console.log(errorMsg);
    console.error(errorMsg);

    // throw an application level error
    return Observable.throw(errorMsg);
}