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<?php
namespace PressGang\Widget;
/**
* Plugin Name: Pressgang Mailchimp Widget
* Description: A simple widget that embeds a Mailchimp Signup form
* Version: 0.1
* Author: Ben Wallis
* Author URI: http://www.benedict-wallis.com
*
*/
class MailchimpSignup extends \Pressgang\Widget {
protected $fields = array(
'title' => array(
'view' => 'admin.text.twig',
'class' => 'widefat',
'label' => "Title",
),
'api_key' => array(
'view' => 'admin.text.twig',
'class' => 'widefat',
'label' => "API Key",
),
'list_id' => array(
'view' => 'admin.text.twig',
'class' => 'widefat',
'label' => "List ID",
),
);
/**
* __construct
*
* Constructor
*
*/
public function __construct() {
\Pressgang\Scripts::$scripts['mailchimp'] = array(
'src' => get_template_directory_uri() . '/js/src/custom/mailchimp.js',
'deps' => array('jquery'),
'ver' => '1.0',
'hook' => 'render_widget_mailchimp_signup',
);
$this->description = __("A simple widget that embeds a Mailchimp signup form", THEMENAME);
add_action('wp_ajax_mailchimp_signup', array($this, 'signup'));
add_action('wp_ajax_nopriv_mailchimp_signup', array($this, 'signup'));
parent::__construct();
}
/**
* Signup
*
*/
function signup() {
$opts = get_option($this->option_name);
$opts = $opts[$this->number];
$success = false;
$message = '';
$email = filter_input(INPUT_POST, 'email',FILTER_VALIDATE_EMAIL);
try {
$mailchimp = new MailChimp($opts['api_key']);
$response = $mailchimp->call('lists/subscribe', array(
'email' => array('email' => $email),
'id' => $opts['list_id'],
));
} catch(Exception $ex) {
$message = __("Sorry! There was an error connecting to Mailchimp'", THEMENAME);
}
if (isset($response['email'])) {
$success = true;
} else {
$message = $response['error'];
}
if (!$success && empty($message)) {
$message = __("Sorry! There was an error in the newsletter configuration, contact the website admin", THEMENAME);
}
echo json_encode(array('success' => $success, 'message' => $message));
die();
}
}
/**
* Super-simple, minimum abstraction MailChimp API v2 wrapper
*
* Uses curl if available, falls back to file_get_contents and HTTP stream.
* This probably has more comments than code.
*
* Contributors:
* Michael Minor <me@pixelbacon.com>
* Lorna Jane Mitchell, github.com/lornajane
*
* @author Drew McLellan <drew.mclellan@gmail.com>
* @version 1.1.1
*/
class MailChimp
{
private $api_key;
private $api_endpoint = 'https://<dc>.api.mailchimp.com/2.0';
private $verify_ssl = false;
/**
* Create a new instance
* @param string $api_key Your MailChimp API key
*/
public function __construct($api_key)
{
$this->api_key = $api_key;
list(, $datacentre) = explode('-', $this->api_key);
$this->api_endpoint = str_replace('<dc>', $datacentre, $this->api_endpoint);
}
/**
* Call an API method. Every request needs the API key, so that is added automatically -- you don't need to pass it in.
* @param string $method The API method to call, e.g. 'lists/list'
* @param array $args An array of arguments to pass to the method. Will be json-encoded for you.
* @return array Associative array of json decoded API response.
*/
public function call($method, $args = array(), $timeout = 10)
{
return $this->makeRequest($method, $args, $timeout);
}
/**
* Performs the underlying HTTP request. Not very exciting
* @param string $method The API method to be called
* @param array $args Assoc array of parameters to be passed
* @return array Assoc array of decoded result
*/
private function makeRequest($method, $args = array(), $timeout = 10)
{
$args['apikey'] = $this->api_key;
$url = $this->api_endpoint.'/'.$method.'.json';
$json_data = json_encode($args);
if (function_exists('curl_init') && function_exists('curl_setopt')) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
curl_setopt($ch, CURLOPT_USERAGENT, 'PHP-MCAPI/2.0');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, $this->verify_ssl);
curl_setopt($ch, CURLOPT_POSTFIELDS, $json_data);
$result = curl_exec($ch);
curl_close($ch);
} else {
$result = file_get_contents($url, null, stream_context_create(array(
'http' => array(
'protocol_version' => 1.1,
'user_agent' => 'PHP-MCAPI/2.0',
'method' => 'POST',
'header' => "Content-type: application/json\r\n".
"Connection: close\r\n" .
"Content-length: " . strlen($json_data) . "\r\n",
'content' => $json_data,
),
)));
}
return $result ? json_decode($result, true) : false;
}
}
register_widget('PressGang\Widget\MailchimpSignup');