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<?php
/**
 * @package     Joomla.Site
 * @subpackage  com_contact
 *
 * @copyright   (C) 2010 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Contact\Site\Controller;

\defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Log\Log;
use Joomla\CMS\Mail\Exception\MailDisabledException;
use Joomla\CMS\Mail\MailTemplate;
use Joomla\CMS\MVC\Controller\FormController;
use Joomla\CMS\Plugin\PluginHelper;
use Joomla\CMS\Router\Route;
use Joomla\CMS\String\PunycodeHelper;
use Joomla\CMS\Uri\Uri;
use Joomla\CMS\User\User;
use Joomla\CMS\Versioning\VersionableControllerTrait;
use Joomla\Component\Fields\Administrator\Helper\FieldsHelper;
use Joomla\Utilities\ArrayHelper;
use PHPMailer\PHPMailer\Exception as phpMailerException;

/**
 * Controller for single contact view
 *
 * @since  1.5.19
 */
class ContactController extends FormController
{
	use VersionableControllerTrait;

/**
	 * The URL view item variable.
	 *
	 * @var    string
	 * @since  4.0.0
	 */
	protected $view_item = 'form';

/**
	 * The URL view list variable.
	 *
	 * @var    string
	 * @since  4.0.0
	 */
	protected $view_list = 'categories';

/**
	 * Method to get a model object, loading it if required.
	 *
	 * @param   string  $name    The model name. Optional.
	 * @param   string  $prefix  The class prefix. Optional.
	 * @param   array   $config  Configuration array for model. Optional.
	 *
	 * @return  \Joomla\CMS\MVC\Model\BaseDatabaseModel  The model.
	 *
	 * @since   1.6.4
	 */
	public function getModel($name = 'form', $prefix = '', $config = array('ignore_request' => true))
	{
		return parent::getModel($name, $prefix, array('ignore_request' => false));
	}

/**
	 * Method to submit the contact form and send an email.
	 *
	 * @return  boolean  True on success sending the email. False on failure.
	 *
	 * @since   1.5.19
	 */
	public function submit()
	{
		// Check for request forgeries.
		$this->checkToken();

$app    = Factory::getApplication();
		$model  = $this->getModel('contact');
		$stub   = $this->input->getString('id');
		$id     = (int) $stub;

// Get the data from POST
		$data = $this->input->post->get('jform', array(), 'array');

// Get item
		$model->setState('filter.published', 1);
		$contact = $model->getItem($id);

if ($contact === false)
		{
			$this->setMessage($model->getError(), 'error');

return false;
		}

// Get item params, take menu parameters into account if necessary
		$active = $app->getMenu()->getActive();
		$stateParams = clone $model->getState()->get('params');

// If the current view is the active item and a contact view for this contact, then the menu item params take priority
		if ($active && strpos($active->link, 'view=contact') && strpos($active->link, '&id=' . (int) $contact->id))
		{
			// $item->params are the contact params, $temp are the menu item params
			// Merge so that the menu item params take priority
			$contact->params->merge($stateParams);
		}
		else
		{
			// Current view is not a single contact, so the contact params take priority here
			$stateParams->merge($contact->params);
			$contact->params = $stateParams;
		}

// Check if the contact form is enabled
		if (!$contact->params->get('show_email_form'))
		{
			$this->setRedirect(Route::_('index.php?option=com_contact&view=contact&id=' . $stub . '&catid=' . $contact->catid, false));

return false;
		}

// Check for a valid session cookie
		if ($contact->params->get('validate_session', 0))
		{
			if (Factory::getSession()->getState() !== 'active')
			{
				$this->app->enqueueMessage(Text::_('JLIB_ENVIRONMENT_SESSION_INVALID'), 'warning');

// Save the data in the session.
				$this->app->setUserState('com_contact.contact.data', $data);

// Redirect back to the contact form.
				$this->setRedirect(Route::_('index.php?option=com_contact&view=contact&id=' . $stub . '&catid=' . $contact->catid, false));

return false;
			}
		}

// Contact plugins
		PluginHelper::importPlugin('contact');

// Validate the posted data.
		$form = $model->getForm();

if (!$form)
		{
			throw new \Exception($model->getError(), 500);
		}

if (!$model->validate($form, $data))
		{
			$errors = $model->getErrors();

foreach ($errors as $error)
			{
				$errorMessage = $error;

if ($error instanceof \Exception)
				{
					$errorMessage = $error->getMessage();
				}

$app->enqueueMessage($errorMessage, 'error');
			}

$app->setUserState('com_contact.contact.data', $data);

$this->setRedirect(Route::_('index.php?option=com_contact&view=contact&id=' . $stub . '&catid=' . $contact->catid, false));

return false;
		}

// Validation succeeded, continue with custom handlers
		$results = $this->app->triggerEvent('onValidateContact', array(&$contact, &$data));

foreach ($results as $result)
		{
			if ($result instanceof \Exception)
			{
				return false;
			}
		}

// Passed Validation: Process the contact plugins to integrate with other applications
		$this->app->triggerEvent('onSubmitContact', array(&$contact, &$data));

// Send the email
		$sent = false;

if (!$contact->params->get('custom_reply'))
		{
			$sent = $this->_sendEmail($data, $contact, $contact->params->get('show_email_copy', 0));
		}

$msg = '';

// Set the success message if it was a success
		if ($sent)
		{
			$msg = Text::_('COM_CONTACT_EMAIL_THANKS');
		}

// Flush the data from the session
		$this->app->setUserState('com_contact.contact.data', null);

// Redirect if it is set in the parameters, otherwise redirect back to where we came from
		if ($contact->params->get('redirect'))
		{
			$this->setRedirect($contact->params->get('redirect'), $msg);
		}
		else
		{
			$this->setRedirect(Route::_('index.php?option=com_contact&view=contact&id=' . $stub . '&catid=' . $contact->catid, false), $msg);
		}

return true;
	}

/**
	 * Method to get a model object, loading it if required.
	 *
	 * @param   array      $data               The data to send in the email.
	 * @param   \stdClass  $contact            The user information to send the email to
	 * @param   boolean    $emailCopyToSender  True to send a copy of the email to the user.
	 *
	 * @return  boolean  True on success sending the email, false on failure.
	 *
	 * @since   1.6.4
	 */
	private function _sendEmail($data, $contact, $emailCopyToSender)
	{
		$app = $this->app;

if ($contact->email_to == '' && $contact->user_id != 0)
		{
			$contact_user      = User::getInstance($contact->user_id);
			$contact->email_to = $contact_user->get('email');
		}

$templateData = [
			'sitename' => $app->get('sitename'),
			'name'     => $data['contact_name'],
			'contactname' => $contact->name,
			'email'    => PunycodeHelper::emailToPunycode($data['contact_email']),
			'subject'  => $data['contact_subject'],
			'body'     => stripslashes($data['contact_message']),
			'url'      => Uri::base(),
			'customfields' => ''
		];

// Load the custom fields
		if (!empty($data['com_fields']) && $fields = FieldsHelper::getFields('com_contact.mail', $contact, true, $data['com_fields']))
		{
			$output = FieldsHelper::render(
				'com_contact.mail',
				'fields.render',
				array(
					'context' => 'com_contact.mail',
					'item'    => $contact,
					'fields'  => $fields,
				)
			);

if ($output)
			{
				$templateData['customfields'] = $output;
			}
		}

try
		{
			$mailer = new MailTemplate('com_contact.mail', $app->getLanguage()->getTag());
			$mailer->addRecipient($contact->email_to);
			$mailer->setReplyTo($templateData['email'], $templateData['name']);
			$mailer->addTemplateData($templateData);
			$sent = $mailer->send();

// If we are supposed to copy the sender, do so.
			if ($emailCopyToSender == true && !empty($data['contact_email_copy']))
			{
				$mailer = new MailTemplate('com_contact.mail.copy', $app->getLanguage()->getTag());
				$mailer->addRecipient($templateData['email']);
				$mailer->setReplyTo($templateData['email'], $templateData['name']);
				$mailer->addTemplateData($templateData);
				$sent = $mailer->send();
			}
		}
		catch (MailDisabledException | phpMailerException $exception)
		{
			try
			{
				Log::add(Text::_($exception->getMessage()), Log::WARNING, 'jerror');

$sent = false;
			}
			catch (\RuntimeException $exception)
			{
				Factory::getApplication()->enqueueMessage(Text::_($exception->errorMessage()), 'warning');

$sent = false;
			}
		}

return $sent;
	}

/**
	 * Method override to check if you can add a new record.
	 *
	 * @param   array  $data  An array of input data.
	 *
	 * @return  boolean
	 *
	 * @since   4.0.0
	 */
	protected function allowAdd($data = array())
	{
		if ($categoryId = ArrayHelper::getValue($data, 'catid', $this->input->getInt('catid'), 'int'))
		{
			$user = $this->app->getIdentity();

// If the category has been passed in the data or URL check it.
			return $user->authorise('core.create', 'com_contact.category.' . $categoryId);
		}

// In the absence of better information, revert to the component permissions.
		return parent::allowAdd();
	}

/**
	 * Method override to check if you can edit an existing record.
	 *
	 * @param   array   $data  An array of input data.
	 * @param   string  $key   The name of the key for the primary key; default is id.
	 *
	 * @return  boolean
	 *
	 * @since   4.0.0
	 */
	protected function allowEdit($data = array(), $key = 'id')
	{
		$recordId = (int) isset($data[$key]) ? $data[$key] : 0;

if (!$recordId)
		{
			return false;
		}

// Need to do a lookup from the model.
		$record     = $this->getModel()->getItem($recordId);
		$categoryId = (int) $record->catid;

if ($categoryId)
		{
			$user = $this->app->getIdentity();

// The category has been set. Check the category permissions.
			if ($user->authorise('core.edit', $this->option . '.category.' . $categoryId))
			{
				return true;
			}

// Fallback on edit.own.
			if ($user->authorise('core.edit.own', $this->option . '.category.' . $categoryId))
			{
				return ($record->created_by === $user->id);
			}

return false;
		}

// Since there is no asset tracking, revert to the component permissions.
		return parent::allowEdit($data, $key);
	}

/**
	 * Method to cancel an edit.
	 *
	 * @param   string  $key  The name of the primary key of the URL variable.
	 *
	 * @return  boolean  True if access level checks pass, false otherwise.
	 *
	 * @since   4.0.0
	 */
	public function cancel($key = null)
	{
		$result = parent::cancel($key);

$this->setRedirect(Route::_($this->getReturnPage(), false));

return $result;
	}

/**
	 * Gets the URL arguments to append to an item redirect.
	 *
	 * @param   integer  $recordId  The primary key id for the item.
	 * @param   string   $urlVar    The name of the URL variable for the id.
	 *
	 * @return  string    The arguments to append to the redirect URL.
	 *
	 * @since   4.0.0
	 */
	protected function getRedirectToItemAppend($recordId = 0, $urlVar = 'id')
	{
		// Need to override the parent method completely.
		$tmpl = $this->input->get('tmpl');

$append = '';

// Setup redirect info.
		if ($tmpl)
		{
			$append .= '&tmpl=' . $tmpl;
		}

$append .= '&layout=edit';

$append .= '&' . $urlVar . '=' . (int) $recordId;

$itemId = $this->input->getInt('Itemid');
		$return = $this->getReturnPage();
		$catId  = $this->input->getInt('catid');

if ($itemId)
		{
			$append .= '&Itemid=' . $itemId;
		}

if ($catId)
		{
			$append .= '&catid=' . $catId;
		}

if ($return)
		{
			$append .= '&return=' . base64_encode($return);
		}

return $append;
	}

/**
	 * Get the return URL.
	 *
	 * If a "return" variable has been passed in the request
	 *
	 * @return  string    The return URL.
	 *
	 * @since   4.0.0
	 */
	protected function getReturnPage()
	{
		$return = $this->input->get('return', null, 'base64');

if (empty($return) || !Uri::isInternal(base64_decode($return)))
		{
			return Uri::base();
		}

return base64_decode($return);
	}
}