/ongage-custom-sender.php

<?php

/**
 * Plugin Name: Ongage Custom Emails
 * Plugin URI:
 * Description: This plugin sends emails, generated by WordPress using Ongage. It also adds new emails to email list.
 * Version:     0.0.1
 * Author:      Kostiantyn Aleksieiev
 * Author URI:  http://itinarray.com
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * @author     Kostiantyn Aleksieiev
 * @version    0.0.1
 * @package    ITinArrayLab
 * @copyright  Copyright (c) 2016, Kostiantyn Aleksieiev
 * @link       http://itinarray.com
 * @license    http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 */

define('ONGAGE_PLUGIN_PATH', plugin_dir_path(__FILE__));

require plugin_dir_path(__FILE__) . '/dashboard/admin_panel.php';

final class ongageCustomPlugin
{

    static $conflict;
    static $error;
    static $settings;
    static $user_id;

    /**
     * Initialize all the things
     *
     * @since 0.0.1
     */
    static function init()
    {

        self::$conflict = false;
        self::$user_id = false;
        if (function_exists('wp_mail')) {
            self::$conflict = true;
            add_action('admin_notices', array(__CLASS__, 'adminNotices'));
            return;
        }

        if (self::isConfigured()) {
            self::$settings = self::getSettings();


            function wp_mail($to, $subject, $message, $headers = '', $attachments = array())
            {
                try {
                    $user = get_user_by('email', $to);
                    $first_name = '';
                    $last_name = '';
                    if (is_object($user)) {
                        if (property_exists($user, 'ID')) {
                            $user_meta = get_user_meta($user->ID);
                            if (isset($user_meta['business_email'][0]) && ongageCustomPlugin::validateEmail($user_meta['business_email'][0])) {
                                $to = $user_meta['business_email'][0];
                            }
                            //to be compatible with woocommerce plugin
                            if (isset($user_meta['billing_email'][0]) && ongageCustomPlugin::validateEmail($user_meta['billing_email'][0])) {
                                $to = $user_meta['billing_email'][0];
                            }
                            $first_name = (isset($user_meta['first_name'][0])) ? $user_meta['first_name'][0] : '';
                            $last_name = (isset($user_meta['last_name'][0])) ? $user_meta['last_name'][0] : '';
                        }
                        if (isset($_SESSION['user_id'])) {
//                            ongageCustomPlugin::subscribe($to, $first_name, $last_name);
                            unset($_SESSION['user_id']);
                        }
                    }

                    $sent = ongageCustomPlugin::mail($to, $subject, $message, $headers, $attachments);
                    $sent = json_decode($sent['response']);
                    if ($sent->metadata->error) {
                        return ongageCustomPlugin::wp_mail_native($to, $subject, $message, $headers, $attachments);
                    }
                    return true;
                } catch (Exception $e) {
                    return ongageCustomPlugin::wp_mail_native($to, $subject, $message, $headers, $attachments);
                }
            }


            add_action('user_register', 'ongage_custom_subscribe', 10, 1);

            function ongage_custom_subscribe($user_id)
            {

                $_SESSION['user_id'] = $user_id;


            }


        }
    }


    /**
     * Load the textdomain so we can support other languages
     *
     * @since 0.0.1
     */

    static function adminNotices()
    {
        if (self::$conflict) {
            echo '<div class="error"><p>' . __('Ongage: wp_mail has been declared by another process or plugin, so you won\'t be able to use Ongage until the problem is solved.', 'ongage') . '</p></div>';
        }
    }

    /**
     * Load the textdomain so we can support other languages
     *
     * @since 0.0.1
     */

    static function adminNoticesSubscribe()
    {
        if (self::$conflict) {
            echo '<div class="error"><p>' . __('You are testing subscription but "Subscribe New Users" mode is disabled', 'ongage') . '</p></div>';
        }
    }

    /**
     * @return boolean
     */
    static function isConfigured()
    {


        if (
            self::getOption('list_id')
            && self::getOption('mailing_id')
            && self::getOption('esp_id')
            && self::getOption('username')
            && self::getOption('password')
            && self::getOption('account_code')
            && !self::$conflict
        )
            return true;

        return false;
    }

    static function getSettings()
    {

        $settings['language_iso'] = self::getOption('language_iso', 'en');
        $settings['account_code'] = self::getOption('account_code');
        $settings['debug_mode'] = (self::getOption('debug_mode')) ? true : false;
        $settings['subscribe_mode'] = (self::getOption('subscribe_mode')) ? true : false;
        $settings['password'] = self::getOption('password');
        $settings['username'] = self::getOption('username');
        $settings['type'] = self::getOption('type', 'email');
        $settings['domain'] = self::getOption('domain', 'default');
        $settings['esp_id'] = self::getOption('esp_id');
        $settings['percentage'] = self::getOption('percentage', 100);
        $settings['from_address'] = self::getOption('from_address', 'ongage@wordpress.com');
        $settings['reply_address'] = self::getOption('reply_address', 'ongage@wordpress.com');
        $settings['from_name'] = self::getOption('from_name', 'Ongage Wordpress Plugin');
        $settings['mailing_id'] = self::getOption('mailing_id');
        $settings['list_id'] = self::getOption('list_id');
        $settings['name'] = self::getOption('name', '');
        $settings['description'] = self::getOption('description', '');


        return $settings;


    }

    private static function getOption($name, $default = false)
    {


        /**
         * @return mixed
         */
        $options = get_option('ongage_ongage');

        if (isset($options[$name]))
            return $options[$name];

        return $default;

    }


    /**
     * @return boolean
     */
    static function wp_mail_native($to, $subject, $message, $headers = '', $attachments = array())
    {
        error_log("\nwp-ongageCustomPlugin::wp_mail_native: $to ($subject)\n");
        require plugin_dir_path(__FILE__) . '/legacy/function.wp_mail.php';
    }

    /**
     * Working Horse
     */


    static function sendTest($email)
    {

        if (self::isConfigured()) {
            $subject = "You are testing Ongage plugin installation";
            $success = false;
            $html = "<html><body><p>If you can see this email, it means you configured plugin correctly.</p></body></html>";
            $test_debug_mode = self::$settings['debug_mode'];
            $result = self::mail($email, $subject, $html, $test_debug_mode);
            $errno = "Message not sent. Check your settings";


            if (isset($result['response'])) {
                $array_response = json_decode($result['response'], true);
                $errno = $array_response['metadata']['error'];
                if ($errno === false) {
                    $success = true;
                }

            }


            $log = "<b>Send Test Email Result</b>:<br/>";

            if ($errno) {
                $log .= "<b>error</b>: " . $errno . "<br/>+++++++++++++++++++++++<br/>";
            } else if ($success) {

                $log .= "<b>Success</b>: Message Sent Successfully. Check Your Inbox in a Few Minutes.<br/>";

            } else {
                echo "there is no errors in response, but no success" . PHP_EOL;
                var_dump($result);

            }


            return $log;
        }


    }

    static function subscribe($email, $first_name, $last_name, $test_mode=false)
    {
        if (self::isConfigured()) {


            if (!self::$settings['subscribe_mode'] && !$test_mode) {

                return false;
            }

            $list_id = self::$settings['list_id'];
            $request['email'] = $email;
            $request['list_id'] = $list_id;
            $request['fields']['email'] = $first_name;
            $request['fields']['fname'] = $first_name;
            $request['fields']['lname'] = $last_name;
            $link = $list_id . '/api/contacts/';
            include_once(plugin_dir_path(__FILE__) . '/lib/Ongage.php');
            $ongage = new Ongage(self::$settings);
            $response_raw = $ongage->postRequest($request, $link);
            $result = json_encode($response_raw);

            if ($test_mode) {
                if (!self::$settings['subscribe_mode']) {

                    //@TODO Make response nicer for testEmail and Test Subscribtion

                    echo '<h3 style="color: red">You are testing subscription but Subscribe New Users mode is disabled</h3>';

                }
                if (self::$settings['debug_mode'])

                    var_dump($result);
            }

            return $result;
        }

        return false;

    }

    static function mail($to, $subject, $html, $test_debug=false, $headers = '', $attachments = [], $content_text = '')
    {


        $request = array(
            'language_iso' => self::$settings['language_iso'],
            'type' => self::$settings['type'],
            'distribution' =>
                array(
                    0 =>
                        array(
                            'esp_id' => (string)self::$settings['esp_id'],
                            'domain' => self::$settings['domain'],
                            'percent' => self::$settings['percentage'],
                        ),
                ),
            'email_message' =>
                array(
                    'addresses' =>
                        array(
                            self::$settings['esp_id'] =>
                                array(
                                    'from_address' => self::$settings['from_address'],
                                    'reply_address' => self::$settings['reply_address'],
                                    'from_name' => self::$settings['from_name'],
                                    'esp_connection_id' => self::$settings['esp_id']
                                ),
                        ),
                    'subject' => $subject,
                    'content_html' => $html,
                    'content_text' => $content_text,
                ),
            'mailing_id' => (string)self::$settings['mailing_id'],
            'list_id' => (string)self::$settings['list_id'],
            'name' => self::$settings['name'],
            'description' => self::$settings['description'],
        );
        $request["recipients"] = [$to];
        $request["disable_unsubscribe"] = true;

        include_once(plugin_dir_path(__FILE__) . '/lib/Ongage.php');
        $ongage = new Ongage(self::$settings);
        $link = "api/notify_transactions";
        $response_raw = $ongage->postRequest($request, $link);
        $result = json_decode($response_raw);
        if (isset($result->metadata->error) && $result->metadata->error == FALSE) {
            $ret = array(
                'response' => $response_raw,
            );
        } else {
            $ret = array(
                'response' => $response_raw,
            );
        }
        return $ret;
    }

    static function validateEmail($email)
    {
        $pattern = "/^(([^<>()\[\]\\.,;:\s@\"]+(\.[^<>()\[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/";

        if (!preg_match($pattern, $email)) {
            return false;
        }

        return true;
    }


}

ongageCustomPlugin::init();


register_deactivation_hook(__FILE__, 'ongage_custom_plugin_deactivation');
function ongage_custom_plugin_deactivation()
{
    delete_option('ongage_ongage');
}