<?php
/**
 * @package     JCE
 * @subpackage  Editors.Jce
 *
 * @copyright   Copyright (C) 2005 - 2023 Open Source Matters, Inc. All rights reserved.
 * @copyright   Copyright (c) 2009-2024 Ryan Demmer. All rights reserved
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Plugin\System\JcePro\PluginTraits;

use Joomla\CMS\Component\ComponentHelper;
use Joomla\CMS\Editor\Editor;
use Joomla\CMS\Factory;
use Joomla\CMS\Form\Form;
use Joomla\CMS\Form\FormHelper;
use Joomla\CMS\HTML\HTMLHelper;
use Joomla\CMS\Plugin\PluginHelper;
use Joomla\CMS\Uri\Uri;
use Joomla\Registry\Registry;
use WFBrowserHelper;

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

/**
 * Handles the onDisplay event for the JCE editor.
 *
 * @since  3.9.59
 */
trait MediaFieldTrait
{
    /**
     * Flag to set / check if media assests have been loaded
     *
     * @var boolean
     */
    private $mediaLoaded = false;

    private $supportedFieldTypes = array('media', 'fcmedia', 'mediajce', 'extendedmedia');

    private function getMediaRedirectOptions()
    {
        static $options = array();

        $app = Factory::getApplication();

        $id = $app->input->get('fieldid', '');
        $mediatype = $app->input->getVar('mediatype', $app->input->getVar('view', 'images'));
        $context = $app->input->getVar('context', '');
        $plugin = $app->input->getCmd('plugin', '');
        $mediafolder = $app->input->getVar('mediafolder', '');

        $config = array(
            'element' => $id,
            'mediatype' => $mediatype,
            'context' => $context,
            'plugin' => $plugin,
        );

        if ($mediafolder) {
            $config['mediafolder'] = $mediafolder;
        }

        $signature = md5(serialize($config));

        if (!isset($options[$signature])) {
            $options[$signature] = WFBrowserHelper::getMediaFieldOptions($config);
        }

        if (empty($options[$signature]['url'])) {
            return false;
        }

        return $options[$signature];
    }

    private function redirectMedia()
    {
        $options = $this->getMediaRedirectOptions();

        if ($options && isset($options['url'])) {
            Factory::getApplication()->redirect($options['url']);
        }
    }

    private function isEditorEnabled()
    {
        return ComponentHelper::isEnabled('com_jce') && PluginHelper::isEnabled('editors', 'jce') && PluginHelper::isEnabled('system', 'jce');
    }

    private function canRedirectMedia()
    {
        $app = Factory::getApplication();

        // must have fieldid
        if (!$app->input->get('fieldid')) {
            return false;
        }

        // jce converted mediafield
        if ($app->input->getCmd('option') == 'com_jce' && $app->input->getCmd('task') == 'mediafield.display') {
            return true;
        }

        $params = ComponentHelper::getParams('com_jce');

        if ((int) $params->get('replace_media_manager', 1)) {
            // flexi-content mediafield
            if ($app->input->getCmd('option') == 'com_media' && $app->input->getCmd('asset') == 'com_flexicontent') {
                return true;
            }
        }

        return false;
    }

    public function onAfterRoute()
    {
        if (false == $this->isEditorEnabled()) {
            return false;
        }

        // merge params with component
        $componentParams = ComponentHelper::getParams('com_jce');
        $this->params->merge($componentParams);

        if ($this->canRedirectMedia() && $this->isEditorEnabled()) {
            // redirect to file browser
            $this->redirectMedia();
        }
    }

    private function loadMediaFiles($options = array())
    {
        if ($this->mediaLoaded) {
            return;
        }

        $document = Factory::getDocument();

        $document->addScriptOptions('plg_system_jce', array(
            'convert' => isset($options['converted']) ? (int) $options['converted'] : 0,
            'context' => isset($options['context']) ? (int) $options['context'] : 0,
            'upload' => isset($options['upload']) ? (int) $options['upload'] : 0,
        ), true);

        // Include jQuery
        HTMLHelper::_('jquery.framework');

        $document = Factory::getDocument();
        $document->addScript(Uri::root(true) . '/media/plg_system_jcepro/site/js/media.min.js', array('version' => 'auto'));
        // load core css files
        $document->addStyleSheet(Uri::root(true) . '/media/com_jce/site/css/media.min.css', array('version' => 'auto'));

        $this->mediaLoaded = true;
    }

    /**
     * Process the Joomla Media Field
     *
     * @param JForm $form The form to be altered
     * @param mixed $data The associated data for the form
     *
     * @return bool
     *
     * @since   2.5.20
     */
    public function processMediaFieldForm($form, $data)
    {
        $app = Factory::getApplication();
        $docType = Factory::getDocument()->getType();

        // must be an html doctype
        if ($docType !== 'html') {
            return true;
        }

        // Update MediaField parameters
        if (strpos($form->getName(), 'com_fields.field') === 0) {
            $tmpData = new Registry($data);

            // only for JCE Media Fields!
            if ($tmpData->get('type', '') == 'mediajce') {
                $mediafield = JPATH_PLUGINS . '/system/jcepro/forms/mediajce.xml';

                if (is_file($mediafield)) {
                    if ($mediafield_xml = simplexml_load_file($mediafield)) {
                        $form->setField($mediafield_xml);
                    }
                }
            }
        }

        // editor not enabled
        if (false == $this->isEditorEnabled()) {
            return true;
        }

        // Get File Browser options
        $options = $this->getMediaRedirectOptions();

        // not enabled
        if (false == $options) {
            return true;
        }

        $hasMedia = false;
        $fields = $form->getFieldset();

        $form->addFieldPath(JPATH_PLUGINS . '/fields/mediajce/fields');

        foreach ($fields as $field) {
            $type = $field->getAttribute('type');

            if (!$type) {
                continue;
            }

            // check if field type is supported
            if (!in_array(strtolower($type), $this->supportedFieldTypes)) {
                continue;
            }

            $name = $field->getAttribute('name');

            // avoid processing twice
            if ($form->getFieldAttribute($name, 'class') && strpos($form->getFieldAttribute($name, 'class'), 'wf-media-input') !== false) {
                continue;
            }

            if ($type == 'media' || $type == 'fcmedia') {
                // media replacement disabled, skip...
                if ($options['converted'] == false) {
                    continue;
                }

                $group = (string) $field->group;
                $form->setFieldAttribute($name, 'type', 'mediajce', $group);
                $form->setFieldAttribute($name, 'converted', '1', $group);

                // set converted attribute flag instead of class attribute (extension conflict?)
                $form->setFieldAttribute($name, 'data-wf-converted', '1', $group);
            }

            $hasMedia = true;
        }

        // form has a media field
        if ($hasMedia) {
            $this->loadMediaFiles($options);
        }

        return true;
    }

    /**
     * Process custom media fields
     *
     * @param   stdClass    $field   The field.
     * @param   DOMElement  $parent  The field node parent.
     * @param   Form        $form    The form.
     *
     * @return void
     */
    public function onCustomFieldsPrepareDom($field, \DOMElement $parent, Form $form)
    {
        // check if field type is supported
        if (!in_array(strtolower($field->type), $this->supportedFieldTypes)) {
            return;
        }

        if (!$this->isEditorEnabled()) {
            return;
        }

        // Get File Browser options
        $options = $this->getMediaRedirectOptions();

        // not enabled
        if (false == $options) {
            $field->disabled = true;
        }
        
        // media files must still be loaded
        $this->loadMediaFiles($options);
    }

    /**
     * Proxy function for PlgFieldsMediaJce::onCustomFieldsPrepareDom
     * Allows the JCE Pro System Plugin to edit the field before it is rendered
     *
     * @param FormField $field
     * @param DOMElement $fieldNode
     * @param Form $form
     * @return void
     */
    public function onWfCustomFieldsPrepareDom($field, $fieldNode, Form $form)
    {
        // is the field disabled? This value is set in the onCustomFieldsPrepareDom event based on the media options
        if (isset($field->disabled)) {
            return;
        }
        
        $form->addFieldPath(JPATH_PLUGINS . '/system/jcepro/fields');

        // Joomla 3 requires the fieldtype to be loaded
        FormHelper::loadFieldType('extendedmedia', false);

        // Set type as extendedmedia. This is the default type for JCE Pro and includes support for a simple media field
        $fieldNode->setAttribute('type', 'extendedmedia');

        // set extendedmedia flag
        if ((int) $field->fieldparams->get('extendedmedia', 0) == 1) {
            $fieldNode->setAttribute('data-extendedmedia', '1');
        }

        // allow for legacy media support, which removes the Description field
        if ((int) $field->fieldparams->get('legacymedia', 0) == 1) {
            $fieldNode->setAttribute('type', 'mediajce');
        }
    }
}