TwitterTokenFactory.php

<?php


namespace Antanova\Wordpress;

class TwitterTokenFactory
{
    protected $api_key;

    protected $secret;

    protected $headers = array();

    protected $url = 'https://api.twitter.com/oauth2/token';

    public function __construct($key, $secret)
    {
        $this->api_key = $key;
        $this->secret = $secret;

        $this->setAuthorizationHeader();
    }

    public function setAuthorizationHeader()
    {
        $token = base64_encode(rawurlencode($this->api_key).':'.rawurlencode($this->secret));
        $this->headers['Authorization'] = "Basic $token";
    }

    /**
     * Create our bearer token.
     * 
     * @return array The response from the twitter server
     */
    public function createToken()
    {
        $request_body = array(
            'grant_type' => 'client_credentials',
        );
        $request = \wp_safe_remote_post($this->url, array(
            'body' => $request_body,
            'headers' => $this->headers,
        ));

        if (is_wp_error($request)) {
            //return new \WP_Error('token_error', 'There was a problem requesting a Twitter token: ' . $request->get_error_message());
            die('There was a problem requesting a Twitter token: '.$request->get_error_message());
        }

        return $request;
    }
}