<?php
/**
* Since 2013 Ovidiu Cimpean.
*
* Ovidiu Cimpean - Newsletter Pro © All rights reserved.
*
* DISCLAIMER
*
* Do not edit, modify or copy this file.
* If you wish to customize it, contact us at addons4prestashop@gmail.com.
*
* @author    Ovidiu Cimpean <addons4prestashop@gmail.com>
* @copyright Since 2013 Ovidiu Cimpean
* @license   Do not edit, modify or copy this file
*
* @version   Release: 4
*/

class NewsletterProMailChimpWebhooks
{
    private $module;

    public function __construct()
    {
        $this->module = NewsletterPro::getInstance();
    }

    public static function newInstance()
    {
        return new self();
    }

    public function process()
    {
        $type = Tools::getValue('type');
        $data = Tools::getValue('data');
        switch ($type) {
            case 'subscribe':
                return $this->subscribe($data);

            case 'unsubscribe':
                return $this->unsubscribe($data);

            case 'cleaned':
                return $this->cleaned($data);

            case 'upemail':
                return $this->upemail();

            case 'profile':
                return $this->profile();

            default:
                throw new Exception(sprintf($this->module->l('Invalid MailChimp webhook request type.'), $type));
        }

        return false;
    }

    private function subscribe($data)
    {
        $email = $data['email'];
        $errors = $this->module->subscribe($email, Configuration::get('PS_LANG_DEFAULT'), Configuration::get('PS_SHOP_DEFAULT'));

        if (!empty($errors)) {
            $errors_msg = implode("\n", $errors);
            NewsletterProLog::writeStrip($errors_msg, NewsletterProLog::ERROR_FILE);

            return $errors_msg;
        } else {
            return sprintf($this->module->l('The email address "%s" has been subscribed at the newsletter.'), $email);
        }
    }

    private function unsubscribe($data)
    {
        $email = $data['email'];
        $action = $data['action'];

        switch ($action) {
            case 'delete':
                if ($this->module->ini_config['mailchimp_allow_unsubscribe_delete']) {
                    return $this->deleteEmail($email);
                } else {
                    return $this->unsubscribeEmail($email);
                }

                // no break
            case 'unsub':
            default:
                return $this->unsubscribeEmail($email);
        }

        return false;
    }

    private function cleaned($data)
    {
        $email = $data['email'];
        if ($this->module->ini_config['mailchimp_allow_cleaned_emails']) {
            return $this->deleteEmail($email);
        }

        return $this->module->l('The mailchimp webhook "cleaned emails" feature is not activated.');
    }

    private function upemail()
    {
        return $this->featureUnavailableMessage();
    }

    private function profile()
    {
        return $this->featureUnavailableMessage();
    }

    private function deleteEmail($email)
    {
        if (NewsletterProBounce::execute($email, [], -1)) {
            return sprintf($this->module->l('The email address "%s" has been removed from the newsletter.'), $email);
        } else {
            return sprintf($this->module->l('The email address "%s" has not been removed from the newsletter. Maybe the email does not exists into database.'), $email);
        }
    }

    private function unsubscribeEmail($email)
    {
        if (NewsletterProBounce::execute($email, [], 0)) {
            return sprintf($this->module->l('The email address "%s" has been unsubscribed from the newsletter.'), $email);
        } else {
            return sprintf($this->module->l('The email address "%s" has not been unsubscribed from the newsletter. Maybe the email does not exists into database.'), $email);
        }
    }

    private function featureUnavailableMessage()
    {
        return $this->module->l('This webhook feature is unavailable.');
    }
}