<?php

/**
 * @package     Joomla.Administrator
 * @subpackage  com_workflow
 *
 * @copyright   (C) 2018 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Workflow\Administrator\Controller;

use Joomla\CMS\Application\CMSApplication;
use Joomla\CMS\Language\Text;
use Joomla\CMS\MVC\Controller\BaseController;
use Joomla\CMS\MVC\Factory\MVCFactoryInterface;
use Joomla\CMS\Router\Route;
use Joomla\Input\Input;
use Joomla\String\Inflector;

/**
 * Workflow base controller package.
 *
 * @since  4.0.0
 */
class DisplayController extends BaseController
{
    /**
     * The default view.
     *
     * @var    string
     * @since  4.0.0
     */
    protected $default_view = 'workflows';

    /**
     * The extension for which the workflow apply.
     *
     * @var    string
     * @since  4.0.0
     */
    protected $extension;

    /**
     * The section of the current extension
     *
     * @var    string
     * @since  4.0.0
     */
    protected $section;

    /**
     * Constructor.
     *
     * @param   array                $config   An optional associative array of configuration settings.
     * @param   MVCFactoryInterface  $factory  The factory.
     * @param   CMSApplication       $app      The Application for the dispatcher
     * @param   Input                $input    Input
     *
     * @since   4.0.0
     * @throws  \InvalidArgumentException when no extension is set
     */
    public function __construct($config = array(), MVCFactoryInterface $factory = null, $app = null, $input = null)
    {
        parent::__construct($config, $factory, $app, $input);

        // If extension is not set try to get it from input or throw an exception
        if (empty($this->extension)) {
            $extension = $this->input->getCmd('extension');

            $parts = explode('.', $extension);

            $this->extension = array_shift($parts);

            if (!empty($parts)) {
                $this->section = array_shift($parts);
            }

            if (empty($this->extension)) {
                throw new \InvalidArgumentException(Text::_('COM_WORKFLOW_ERROR_EXTENSION_NOT_SET'));
            }
        }
    }

    /**
     * Method to display a view.
     *
     * @param   boolean  $cachable   If true, the view output will be cached
     * @param   array    $urlparams  An array of safe URL parameters and their variable types, for valid values see {@link JFilterInput::clean()}.
     *
     * @return  BaseController|boolean  This object to support chaining.
     *
     * @since   1.5
     */
    public function display($cachable = false, $urlparams = array())
    {
        $view   = $this->input->get('view');
        $layout = $this->input->get('layout');
        $id     = $this->input->getInt('id');

        // Check for edit form.
        if (in_array($view, ['workflow', 'stage', 'transition']) && $layout == 'edit' && !$this->checkEditId('com_workflow.edit.' . $view, $id)) {
            // Somehow the person just went to the form - we don't allow that.
            if (!\count($this->app->getMessageQueue())) {
                $this->setMessage(Text::sprintf('JLIB_APPLICATION_ERROR_UNHELD_ID', $id), 'error');
            }

            $url = 'index.php?option=com_workflow&view=' . Inflector::pluralize($view) . '&extension=' . $this->input->getCmd('extension');

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

            return false;
        }

        return parent::display();
    }
}
