<?php

/**
 * Example of retrieving an authentication token of the Ustream service
 *
 * PHP version 5.4
 *
 * @author     Attila Gonda <pcdevil7@gmail.com>
 * @copyright  Copyright (c) 2014 The authors
 * @license    http://www.opensource.org/licenses/mit-license.html  MIT License
 */

use OAuth\OAuth2\Service\Ustream;
use OAuth\Common\Storage\Session;
use OAuth\Common\Consumer\Credentials;

/**
 * Bootstrap the example
 */
require_once __DIR__ . '/bootstrap.php';

// Session storage
$storage = new Session();

// Setup the credentials for the requests
$credentials = new Credentials(
    $servicesCredentials['ustream']['key'],
    $servicesCredentials['ustream']['secret'],
    $currentUri->getAbsoluteUri()
);

// Instantiate the Ustream service using the credentials, http client and storage mechanism for the token
/** @var $ustream Ustream */
$ustream = $serviceFactory->createService('Ustream', $credentials, $storage, array('identity'));

if (!empty($_GET['code'])) {
    // retrieve the CSRF state parameter
    $state = isset($_GET['state']) ? $_GET['state'] : null;

    // This was a callback request from Ustream, get the token
    $ustream->requestAccessToken($_GET['code'], $state);

    $result = json_decode($ustream->request('users/self.json'), true);

    echo 'Your unique Ustream user id is: ' . $result['id'] . ' and your username is ' . $result['username'];

} elseif (!empty($_GET['go']) && $_GET['go'] === 'go') {
    $url = $ustream->getAuthorizationUri();
    header('Location: ' . $url);

} else {
    $url = $currentUri->getRelativeUri() . '?go=go';
    echo "<a href='$url'>Login with Ustream!</a>";
}