<?php

/**
 * @package     Joomla.Administrator
 * @subpackage  com_content
 *
 * @copyright   (C) 2017 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Content\Administrator\Helper;

use Joomla\CMS\Factory;
use Joomla\CMS\Form\Form;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Table\Category;
use Joomla\CMS\Workflow\WorkflowServiceInterface;
use Joomla\Database\ParameterType;
use Joomla\Registry\Registry;

/**
 * Content component helper.
 *
 * @since  1.6
 */
class ContentHelper extends \Joomla\CMS\Helper\ContentHelper
{
    /**
     * Check if state can be deleted
     *
     * @param   int  $id  Id of state to delete
     *
     * @return  boolean
     *
     * @since   4.0.0
     */
    public static function canDeleteState(int $id): bool
    {
        $db    = Factory::getDbo();
        $query = $db->getQuery(true);

        $query->select('id')
            ->from($db->quoteName('#__content'))
            ->where($db->quoteName('state') . ' = :id')
            ->bind(':id', $id, ParameterType::INTEGER);
        $db->setQuery($query);
        $states = $db->loadResult();

        return empty($states);
    }

    /**
     * Method to filter transitions by given id of state
     *
     * @param   array  $transitions  Array of transitions
     * @param   int    $pk           Id of state
     * @param   int    $workflowId   Id of the workflow
     *
     * @return  array
     *
     * @since   4.0.0
     */
    public static function filterTransitions(array $transitions, int $pk, int $workflowId = 0): array
    {
        return array_values(
            array_filter(
                $transitions,
                function ($var) use ($pk, $workflowId) {
                    return in_array($var['from_stage_id'], [-1, $pk]) && $workflowId == $var['workflow_id'];
                }
            )
        );
    }

    /**
     * Prepares a form
     *
     * @param   Form          $form  The form to change
     * @param   array|object  $data  The form data
     *
     * @return void
     */
    public static function onPrepareForm(Form $form, $data)
    {
        if ($form->getName() != 'com_categories.categorycom_content') {
            return;
        }

        $db = Factory::getDbo();

        $data = (array) $data;

        // Make workflows translatable
        Factory::getLanguage()->load('com_workflow', JPATH_ADMINISTRATOR);

        $form->setFieldAttribute('workflow_id', 'default', 'inherit');

        $component = Factory::getApplication()->bootComponent('com_content');

        if (
            !$component instanceof WorkflowServiceInterface
            || !$component->isWorkflowActive('com_content.article')
        ) {
            $form->removeField('workflow_id', 'params');

            return;
        }

        $query = $db->getQuery(true);

        $query->select($db->quoteName('title'))
            ->from($db->quoteName('#__workflows'))
            ->where(
                [
                    $db->quoteName('default') . ' = 1',
                    $db->quoteName('published') . ' = 1',
                    $db->quoteName('extension') . ' = ' . $db->quote('com_content.article'),
                ]
            );

        $defaulttitle = $db->setQuery($query)->loadResult();

        $option = Text::_('COM_WORKFLOW_INHERIT_WORKFLOW_NEW');

        if (!empty($data['id'])) {
            $category = new Category($db);

            $categories = $category->getPath((int) $data['id']);

            // Remove the current category, because we search for inheritance from parent.
            array_pop($categories);

            $option = Text::sprintf('COM_WORKFLOW_INHERIT_WORKFLOW', Text::_($defaulttitle));

            if (!empty($categories)) {
                $categories = array_reverse($categories);

                $query = $db->getQuery(true);

                $query->select($db->quoteName('title'))
                    ->from($db->quoteName('#__workflows'))
                    ->where(
                        [
                            $db->quoteName('id') . ' = :workflowId',
                            $db->quoteName('published') . ' = 1',
                            $db->quoteName('extension') . ' = ' . $db->quote('com_content.article'),
                        ]
                    )
                    ->bind(':workflowId', $workflow_id, ParameterType::INTEGER);

                $db->setQuery($query);

                foreach ($categories as $cat) {
                    $cat->params = new Registry($cat->params);

                    $workflow_id = $cat->params->get('workflow_id');

                    if ($workflow_id == 'inherit') {
                        continue;
                    } elseif ($workflow_id == 'use_default') {
                        break;
                    } elseif ($workflow_id = (int) $workflow_id) {
                        $title = $db->loadResult();

                        if (!is_null($title)) {
                            $option = Text::sprintf('COM_WORKFLOW_INHERIT_WORKFLOW', Text::_($title));

                            break;
                        }
                    }
                }
            }
        }

        $field = $form->getField('workflow_id', 'params');

        $field->addOption($option, ['value' => 'inherit']);

        $field->addOption(Text::sprintf('COM_WORKFLOW_USE_DEFAULT_WORKFLOW', Text::_($defaulttitle)), ['value' => 'use_default']);

        $field->addOption('- ' . Text::_('COM_CONTENT_WORKFLOWS') . ' -', ['disabled' => 'true']);
    }
}