<?php
/**
 * @copyright	Copyright (C) 2016 Cédric KEIFLIN alias ced1870
 * https://www.template-creator.com
 * https://www.joomlack.fr
 * @license		GNU/GPL
 * */

use Joomla\String\StringHelper;
use Pagebuilderck\CKFof;

defined('_JEXEC') or die('Restricted access');
jimport('joomla.event.plugin');

class plgPagebuilderckContact2Helper {

	private static $options;

	private static $id;

	public static function processSubmit() {
		// Check for request forgeries.
		\Joomla\CMS\Session\Session::checkToken() or jexit(Pagebuilderck\CKText::_('JINVALID_TOKEN'));
		// get current uri
		$uri = Pagebuilderck\CKUri::getInstance();
		$current_url = $uri->toString();

		$app = Pagebuilderck\CKFof::getApplication();
		$input = $app->input;
		$id = $input->post->get('pagebuilderckid', '', 'string');
		self::$id = $id;
		$data = $_REQUEST[$id];

		// get the params from the plugin options
		$plugin = Pagebuilderck\CKFof::getPlugin('pagebuilderck', 'contact2');
		$pluginParams = new Pagebuilderck\CKRegistry($plugin->params);

		// check for the captcha validation
		// this does not work well in some case, disable 19-09-22
//		$plugin = Pagebuilderck\CKFof::getApplication()->getParams()->get('captcha', \Joomla\CMS\Factory::getConfig()->get('captcha'));
		// replaced with this line which get the plugin from the website config, by default the recaptcha
		$plugin = \Joomla\CMS\Factory::getConfig()->get('captcha', 'recaptcha');

		//log the action
//		self::writeLog($data); // disbaled for now, just uncomment this line to enable the logs

		if ($pluginParams->get('enablecaptcha', '1', 'int') == '1') {
			\Joomla\CMS\Plugin\PluginHelper::importPlugin('captcha');
			$captcha = '';
			$captcha = \Joomla\CMS\Captcha\Captcha::getInstance($plugin, array('namespace' => 'plg_pagebuilderck_contact'));
			if ($captcha != null) {
				// $dispatcher = JDispatcher::getInstance();
				try {
					if (version_compare(JVERSION,'4') < 1) {
						$dispatcher = JEventDispatcher::getInstance();
						$result = $dispatcher->trigger('onCheckAnswer', array());
					} else {
						// $result = Pagebuilderck\CKFof::getApplication()->triggerEvent('onCheckAnswer');
						$result = $captcha->checkAnswer(null);
					}
				// $result = Pagebuilderck\CKFof::getApplication()->triggerEvent('onCheckAnswer', array());
				// $result = $dispatcher->trigger('onCheckAnswer', $input->get('g-recaptcha-response', false));
				} catch (Exception $e) {
					// echo 'Exception reçue : ',  $e->getMessage(), "\n";die;
					$msg = Pagebuilderck\CKText::_('PLG_PAGEBUILDERCK_CONTACT_INVALID_CAPTCHA');
					CKFof::redirect($current_url, $msg, 'error');
					exit();
				}

				if(!$result[0] && $result !== true){
					$msg = Pagebuilderck\CKText::_('PLG_PAGEBUILDERCK_CONTACT_INVALID_CAPTCHA');
					CKFof::redirect($current_url, $msg, 'error');
					exit();
				}
			} else {
				$msg = Pagebuilderck\CKText::_('PLG_PAGEBUILDERCK_CONTACT_INVALID_CAPTCHA');
				CKFof::redirect($current_url, $msg, 'error');
				exit();
			}
		}

		$toEmail = base64_decode($input->post->get('pagebuilderckto', ''));

		// send the email
		$sent = self::_sendEmail($data, $toEmail, false);

		$key = 'successmessage_' . $id;
		$successMessage = self::getPluginOption('contact2', $key);
		$successMessage = $successMessage ? $successMessage : 'PLG_PAGEBUILDERCK_EMAIL_THANKS';

		$session = \Joomla\CMS\Factory::getSession();
		$custom_redirect = self::getPluginOption('contact2', 'successredirect_' . $id);
		$custom_redirect = strpos($custom_redirect, 'CURRENT_URI') > -1 ? str_replace('CURRENT_URI', $current_url, $custom_redirect) : $custom_redirect;
		$url = $custom_redirect ? $custom_redirect : $current_url;

		// Set the success message if it was a success
		if (!($sent instanceof Exception))
		{
			$msg = Pagebuilderck\CKText::_($successMessage);
			$session->set('pagebuilderck_contact_' . $key, array($msg, 'success'));
//			$app->redirect($current_url, $msg, 'success');
			CKFof::redirect($url);
		}
		else
		{
			
			$msg = Pagebuilderck\CKText::_('PLG_PAGEBUILDERCK_CONTACT_EMAIL_ERROR');
			$session->set('pagebuilderck_contact_' . $key, array($msg, 'error'));
//			$app->redirect($current_url, $msg, 'error');
			CKFof::redirect($url);
		}
		
	}

	private static function getPluginOption($plugin, $key) {
		if (empty(self::$options)) {
			$data = PagebuilderckHelper::getOption($plugin . '.' . self::$id);

			self::$options = unserialize((string)$data);

			if (empty(self::$options)) {
				$query = "SELECT custom_data FROM #__extensions WHERE type='plugin' AND element ='" . $plugin . "' AND folder='pagebuilderck'";
				$db = Pagebuilderck\CKFof::getDbo();
				$db->setQuery($query);
				$data = $db->loadResult();

				self::$options = unserialize((string)$data);
			}
		}
		return isset(self::$options[$key]) ? self::$options[$key] : false;
	}

	/**
	 * Method to get a model object, loading it if required.
	 *
	 * @param   array     $data                  The data to send in the email.
	 * @param   string  $to              		The user email to send the email to
	 * @param   boolean   $copy_email_activated  True to send a copy of the email to the user.
	 *
	 * @return  boolean  True on success sending the email, false on failure.
	 *
	 * @since   1.6.4
	 */
	private static function _sendEmail($data, $toEmail, $copy_email_activated = false)
	{
			$app = Pagebuilderck\CKFof::getApplication();
			$input = $app->input;

			$mailfrom = $app->get('mailfrom');
			$fromname = $app->get('fromname');
			$sitename = $app->get('sitename');

			$name    = isset($data['name']) ? $data['name'] : 'Contact Form';
			$email   = \Joomla\CMS\String\PunycodeHelper::emailToPunycode($data['email']); // not removable
			$subject = $data['subject']; // not removable
			
			$labels = unserialize($input->post->get('labels' , '', 'html'));

			$isValid = true;
			// check the filter to avoid unwanted emails
			$bannedEmail = self::getPluginOption('contact2', 'banned_email_' . self::$id);
			$bannedSubject = self::getPluginOption('contact2', 'banned_subject_' . self::$id);
			$bannedText = self::getPluginOption('contact2', 'banned_text_' . self::$id);
			if ($bannedEmail) $isValid = self::test($email, $bannedEmail);
			if (! $isValid) self::messageNotValid();
			if ($bannedSubject) $isValid = self::test($subject, $bannedSubject);
			if (! $isValid) self::messageNotValid();


			$body = '';
			foreach ($data as $k => $value) {
				if ($k === 'copyemail') continue;
				if (is_array($value)) {
					$value = implode(',', $value);
				}
				if ($bannedText) $isValid = self::test($value, $bannedText);
				if (! $isValid) self::messageNotValid();
				$body .= '<p><h4>' . Pagebuilderck\CKText::_($labels[$k]) . ' :</h4> <span>' . htmlspecialchars($value) . '</span></p>';
			}

//			$id = $input->post->get('pagebuilderckid', '', 'string');
			$emailMessage = self::getPluginOption('contact2', 'emailmessage_' . self::$id);
			if (trim($emailMessage)) {
				if (! strpos($emailMessage, '{fieldslist}')) {
					$emailMessage .= '{fieldslist}';
				}
				$body = str_replace('{fieldslist}', $body, $emailMessage);
			}

			// Prepare email body
			$prefix = Pagebuilderck\CKText::sprintf('PLG_PAGEBUILDERCK_CONTACT_EMAIL_REQUEST', Pagebuilderck\CKUri::base());
			$body = $prefix . "\r\n<p>" . $name . " - " . $email . " " . "</p>\r\n\r\n" . stripslashes($body);

			// B/C before 2.1.0
			$toEmail_BC = $toEmail;
			$toEmail = self::getPluginOption('contact2', 'contactemail_' . self::$id);
			$toEmail = $toEmail ? $toEmail : $toEmail_BC;

			$toCC = self::getPluginOption('contact2', 'contactccemail_' . self::$id);
			$toBCC = self::getPluginOption('contact2', 'contactbccemail_' . self::$id);

			$mail = \Joomla\CMS\Factory::getMailer();
			$mail->isHTML(true);
			$mail->addRecipient($toEmail);
			if ($toCC) $mail->addCc($toCC);
			if ($toBCC) $mail->addBcc($toBCC);
			if ($email) $mail->addReplyTo($email, $name);
			$mail->setSender(array($mailfrom, $fromname));
			$mail->setSubject($sitename . ': ' . $subject);
			$mail->setBody($body);

			$sent = $mail->Send();

			// If we are supposed to copy the sender, do so.

			// Check whether email copy function activated
			if (isset($data['copyemail'][0]) && $data['copyemail'][0] == '1')
			{
				$copytext    = Pagebuilderck\CKText::sprintf('PLG_PAGEBUILDERCK_CONTACT_COPYTEXT_OF', $contact->name, $sitename);
				$copytext    .= "\r\n\r\n" . $body;
				$copysubject = Pagebuilderck\CKText::sprintf('PLG_PAGEBUILDERCK_CONTACT_COPYSUBJECT_OF', $subject);

				$mail = \Joomla\CMS\Factory::getMailer();
				$mail->isHTML(true);
				$mail->addRecipient($email);
				$mail->addReplyTo($email, $name);
				$mail->setSender(array($mailfrom, $fromname));
				$mail->setSubject($copysubject);
				$mail->setBody($copytext);
				$sent = $mail->Send();
			}

			return $sent;
	}

	private function writeLog($data) {
		$path = JPATH_ROOT . '/plugins/pagebuilderck/contact2/logs';
		if (! file_exists($path)) {
			mkdir($path);
		}
		$logFile = $path . '/' . date('d-M-Y-H-i-s') . '.txt';
		$logContent = @json_encode($data);
		@file_put_contents($logFile, $logContent);
	}

	/**
     * Method to test for banned email data
     *
     * @param   mixed              $value    The form field value to validate.
     * @param   string             $filter   The filter to check.
     *
     * @return  boolean  True if the value is valid, false otherwise.
     */
	private static function test($value, $filter)
	{

		if ($filter) {
			foreach (explode(';', $filter) as $item) {
				$item = trim($item);
				if ($item != '' && StringHelper::stristr($value, $item) !== false) {
					return false;
				}
			}
		}

		return true;
	}

	private static function messageNotValid() {
		$uri = Pagebuilderck\CKUri::getInstance();
		$current_url = $uri->toString();
		$app = Pagebuilderck\CKFof::getApplication();
		$msg = Pagebuilderck\CKText::_('PLG_PAGEBUILDERCK_CONTACT_INVALID_MESSAGE');
		$app->enqueueMessage($msg, 'error');
		$app->redirect($current_url);
		exit();
	}
}