<?php

/**
 * 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
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2013 Drew McLellan
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

// class was renamed from MailChimp to MailChimp_Divi to avoid conflicts with some plugins. The body of class wasn't changed.
class MailChimp_Divi
{
    private $api_key;
    private $api_endpoint = 'https://<dc>.api.mailchimp.com/2.0';
    private $verify_ssl   = false;

    /**
     * Create a new instance
     * @param string $api_key Your MailChimp API key
     */
    function __construct($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';

        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_encode($args));
            $result = curl_exec($ch);
            curl_close($ch);
        } else {
            $json_data = json_encode($args);
            $result    = file_get_contents($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;
    }
}