<?php

/**
 * @package     Joomla.Administrator
 * @subpackage  com_mails
 *
 * @copyright   (C) 2019 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Mails\Administrator\Controller;

use Joomla\CMS\Application\CMSApplication;
use Joomla\CMS\Event\Model;
use Joomla\CMS\Language\Text;
use Joomla\CMS\MVC\Controller\FormController;
use Joomla\CMS\MVC\Factory\MVCFactoryInterface;
use Joomla\CMS\Router\Route;
use Joomla\CMS\Uri\Uri;
use Joomla\Input\Input;

// phpcs:disable PSR1.Files.SideEffects
\defined('_JEXEC') or die;
// phpcs:enable PSR1.Files.SideEffects

/**
 * The template controller
 *
 * @since  4.0.0
 */
class TemplateController extends FormController
{
    /**
     * Constructor.
     *
     * @param   array                $config   An optional associative array of configuration settings.
     *                                         Recognized key values include 'name', 'default_task', 'model_path', and
     *                                         'view_path' (this list is not meant to be comprehensive).
     * @param   MVCFactoryInterface  $factory  The factory.
     * @param   CMSApplication       $app      The Application for the dispatcher
     * @param   Input                $input    Input
     *
     * @since   4.0.0
     * @throws  \Exception
     */
    public function __construct($config = [], MVCFactoryInterface $factory = null, $app = null, $input = null)
    {
        parent::__construct($config, $factory, $app, $input);

        $this->view_item = 'template';
        $this->view_list = 'templates';
    }

    /**
     * Method 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 = [])
    {
        return false;
    }

    /**
     * Method to edit an existing record.
     *
     * @param   string  $key     The name of the primary key of the URL variable.
     * @param   string  $urlVar  The name of the URL variable if different from the primary key
     *                           (sometimes required to avoid router collisions).
     *
     * @return  boolean  True if access level check and checkout passes, false otherwise.
     *
     * @since   4.0.0
     */
    public function edit($key = null, $urlVar = null)
    {
        // Do not cache the response to this, its a redirect, and mod_expires and google chrome browser bugs cache it forever!
        $this->app->allowCache(false);

        $context = "$this->option.edit.$this->context";

        // Get the previous record id (if any) and the current record id.
        $template_id = $this->input->getCmd('template_id');
        $language    = $this->input->getCmd('language');

        // Access check.
        if (!$this->allowEdit(['template_id' => $template_id, 'language' => $language], $template_id)) {
            $this->setMessage(Text::_('JLIB_APPLICATION_ERROR_EDIT_NOT_PERMITTED'), 'error');

            $this->setRedirect(
                Route::_(
                    'index.php?option=' . $this->option . '&view=' . $this->view_list
                    . $this->getRedirectToListAppend(),
                    false
                )
            );

            return false;
        }

        // Check-out succeeded, push the new record id into the session.
        $this->holdEditId($context, $template_id . '.' . $language);
        $this->app->setUserState($context . '.data', null);

        $this->setRedirect(
            Route::_(
                'index.php?option=' . $this->option . '&view=' . $this->view_item
                . $this->getRedirectToItemAppend([$template_id, $language], 'template_id'),
                false
            )
        );

        return true;
    }

    /**
     * Gets the URL arguments to append to an item redirect.
     *
     * @param   string[]  $recordId  The primary key id for the item in the first element and the language of the
     *                               mail template in the second key.
     * @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 = null, $urlVar = 'id')
    {
        $language = array_pop($recordId);
        $return   = parent::getRedirectToItemAppend(array_pop($recordId), $urlVar);
        $return .= '&language=' . $language;

        return $return;
    }

    /**
     * Method to save a record.
     *
     * @param   string  $key     The name of the primary key of the URL variable.
     * @param   string  $urlVar  The name of the URL variable if different from the primary key (sometimes required to avoid router collisions).
     *
     * @return  boolean  True if successful, false otherwise.
     *
     * @since   4.0.0
     */
    public function save($key = null, $urlVar = null)
    {
        // Check for request forgeries.
        $this->checkToken();

        /** @var \Joomla\CMS\MVC\Model\AdminModel $model */
        $model   = $this->getModel();
        $data    = $this->input->post->get('jform', [], 'array');
        $context = "$this->option.edit.$this->context";
        $task    = $this->getTask();

        $recordId = $this->input->getCmd('template_id');
        $language = $this->input->getCmd('language');

        // Populate the row id from the session.
        $data['template_id'] = $recordId;
        $data['language']    = $language;

        // Access check.
        if (!$this->allowSave($data, 'template_id')) {
            $this->setMessage(Text::_('JLIB_APPLICATION_ERROR_SAVE_NOT_PERMITTED'), 'error');

            $this->setRedirect(
                Route::_(
                    'index.php?option=' . $this->option . '&view=' . $this->view_list
                    . $this->getRedirectToListAppend(),
                    false
                )
            );

            return false;
        }

        // Validate the posted data.
        // Sometimes the form needs some posted data, such as for plugins and modules.
        $form = $model->getForm($data, false);

        if (!$form) {
            $this->app->enqueueMessage($model->getError(), 'error');

            return false;
        }

        // Send an object which can be modified through the plugin event
        $objData = (object) $data;
        $this->getDispatcher()->dispatch(
            'onContentNormaliseRequestData',
            new Model\NormaliseRequestDataEvent('onContentNormaliseRequestData', [
                'context' => $this->option . '.' . $this->context,
                'data'    => $objData,
                'subject' => $form,
            ])
        );
        $data = (array) $objData;

        // Test whether the data is valid.
        $validData = $model->validate($form, $data);

        // Check for validation errors.
        if ($validData === false) {
            // Get the validation messages.
            $errors = $model->getErrors();

            // Push up to three validation messages out to the user.
            for ($i = 0, $n = \count($errors); $i < $n && $i < 3; $i++) {
                if ($errors[$i] instanceof \Exception) {
                    $this->app->enqueueMessage($errors[$i]->getMessage(), 'warning');
                } else {
                    $this->app->enqueueMessage($errors[$i], 'warning');
                }
            }

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

            // Redirect back to the edit screen.
            $this->setRedirect(
                Route::_(
                    'index.php?option=' . $this->option . '&view=' . $this->view_item
                    . $this->getRedirectToItemAppend([$recordId, $language], 'template_id'),
                    false
                )
            );

            return false;
        }

        // Attempt to save the data.
        if (!$model->save($validData)) {
            // Save the data in the session.
            $this->app->setUserState($context . '.data', $validData);

            // Redirect back to the edit screen.
            $this->setMessage(Text::sprintf('JLIB_APPLICATION_ERROR_SAVE_FAILED', $model->getError()), 'error');

            $this->setRedirect(
                Route::_(
                    'index.php?option=' . $this->option . '&view=' . $this->view_item
                    . $this->getRedirectToItemAppend([$recordId, $language], 'template_id'),
                    false
                )
            );

            return false;
        }

        $langKey = $this->text_prefix . ($recordId === 0 && $this->app->isClient('site') ? '_SUBMIT' : '') . '_SAVE_SUCCESS';
        $prefix  = $this->app->getLanguage()->hasKey($langKey) ? $this->text_prefix : 'COM_MAILS';

        $this->setMessage(Text::_($prefix . ($recordId === 0 && $this->app->isClient('site') ? '_SUBMIT' : '') . '_SAVE_SUCCESS'));

        // Redirect the user and adjust session state based on the chosen task.
        switch ($task) {
            case 'apply':
                // Set the record data in the session.
                $this->holdEditId($context, $recordId);
                $this->app->setUserState($context . '.data', null);

                // Redirect back to the edit screen.
                $this->setRedirect(
                    Route::_(
                        'index.php?option=' . $this->option . '&view=' . $this->view_item
                        . $this->getRedirectToItemAppend([$recordId, $language], 'template_id'),
                        false
                    )
                );
                break;

            default:
                // Clear the record id and data from the session.
                $this->releaseEditId($context, $recordId);
                $this->app->setUserState($context . '.data', null);

                $url = 'index.php?option=' . $this->option . '&view=' . $this->view_list
                    . $this->getRedirectToListAppend();

                // Check if there is a return value
                $return = $this->input->get('return', null, 'base64');

                if (!\is_null($return) && Uri::isInternal(base64_decode($return))) {
                    $url = base64_decode($return);
                }

                // Redirect to the list screen.
                $this->setRedirect(Route::_($url, false));
                break;
        }

        // Invoke the postSave method to allow for the child class to access the model.
        $this->postSaveHook($model, $validData);

        return true;
    }
}
