<?php

/**
 * @package     Joomla.Administrator
 * @subpackage  com_categories
 *
 * @copyright   (C) 2008 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Categories\Administrator\View\Categories;

use Joomla\CMS\Component\ComponentHelper;
use Joomla\CMS\Factory;
use Joomla\CMS\Filesystem\Path;
use Joomla\CMS\Helper\ContentHelper;
use Joomla\CMS\Language\Multilanguage;
use Joomla\CMS\Language\Text;
use Joomla\CMS\MVC\View\GenericDataException;
use Joomla\CMS\MVC\View\HtmlView as BaseHtmlView;
use Joomla\CMS\Pagination\Pagination;
use Joomla\CMS\Toolbar\Button\DropdownButton;
use Joomla\CMS\Toolbar\Toolbar;
use Joomla\CMS\Toolbar\ToolbarHelper;

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

/**
 * Categories view class for the Category package.
 *
 * @since  1.6
 */
class HtmlView extends BaseHtmlView
{
    /**
     * An array of items
     *
     * @var  array
     */
    protected $items;

    /**
     * The pagination object
     *
     * @var  Pagination
     */
    protected $pagination;

    /**
     * The model state
     *
     * @var  object
     */
    protected $state;

    /**
     * Flag if an association exists
     *
     * @var  boolean
     */
    protected $assoc;

    /**
     * Form object for search filters
     *
     * @var  \Joomla\CMS\Form\Form
     */
    public $filterForm;

    /**
     * The active search filters
     *
     * @var  array
     */
    public $activeFilters;

    /**
     * Is this view an Empty State
     *
     * @var  boolean
     * @since 4.0.0
     */
    private $isEmptyState = false;

    /**
     * Display the view
     *
     * @param   string|null  $tpl  The name of the template file to parse; automatically searches through the template paths.
     *
     * @throws  GenericDataException
     *
     * @return  void
     */
    public function display($tpl = null)
    {
        $this->state         = $this->get('State');
        $this->items         = $this->get('Items');
        $this->pagination    = $this->get('Pagination');
        $this->assoc         = $this->get('Assoc');
        $this->filterForm    = $this->get('FilterForm');
        $this->activeFilters = $this->get('ActiveFilters');

        // Written this way because we only want to call IsEmptyState if no items, to prevent always calling it when not needed.
        if (!count($this->items) && $this->isEmptyState = $this->get('IsEmptyState')) {
            $this->setLayout('emptystate');
        }

        // Check for errors.
        if (count($errors = $this->get('Errors'))) {
            throw new GenericDataException(implode("\n", $errors), 500);
        }

        // Preprocess the list of items to find ordering divisions.
        foreach ($this->items as &$item) {
            $this->ordering[$item->parent_id][] = $item->id;
        }

        // We don't need toolbar in the modal window.
        if ($this->getLayout() !== 'modal') {
            $this->addToolbar();

            // We do not need to filter by language when multilingual is disabled
            if (!Multilanguage::isEnabled()) {
                unset($this->activeFilters['language']);
                $this->filterForm->removeField('language', 'filter');
            }
        } else {
            // In article associations modal we need to remove language filter if forcing a language.
            if ($forcedLanguage = Factory::getApplication()->getInput()->get('forcedLanguage', '', 'CMD')) {
                // If the language is forced we can't allow to select the language, so transform the language selector filter into a hidden field.
                $languageXml = new \SimpleXMLElement('<field name="language" type="hidden" default="' . $forcedLanguage . '" />');
                $this->filterForm->setField($languageXml, 'filter', true);

                // Also, unset the active language filter so the search tools is not open by default with this filter.
                unset($this->activeFilters['language']);
            }
        }

        parent::display($tpl);
    }

    /**
     * Add the page title and toolbar.
     *
     * @return  void
     *
     * @throws \Exception
     * @since   1.6
     */
    protected function addToolbar()
    {
        $categoryId = $this->state->get('filter.category_id');
        $component  = $this->state->get('filter.component');
        $section    = $this->state->get('filter.section');
        $canDo      = ContentHelper::getActions($component, 'category', $categoryId);
        $user       = Factory::getApplication()->getIdentity();
        $toolbar    = Toolbar::getInstance();

        // Avoid nonsense situation.
        if ($component == 'com_categories') {
            return;
        }

        // Need to load the menu language file as mod_menu hasn't been loaded yet.
        $lang = Factory::getLanguage();
        $lang->load($component, JPATH_BASE)
        || $lang->load($component, JPATH_ADMINISTRATOR . '/components/' . $component);

        // If a component categories title string is present, let's use it.
        if ($lang->hasKey($component_title_key = strtoupper($component . ($section ? "_$section" : '')) . '_CATEGORIES_TITLE')) {
            $title = Text::_($component_title_key);
        } elseif ($lang->hasKey($component_section_key = strtoupper($component . ($section ? "_$section" : '')))) {
            // Else if the component section string exists, let's use it.
            $title = Text::sprintf('COM_CATEGORIES_CATEGORIES_TITLE', $this->escape(Text::_($component_section_key)));
        } else { // Else use the base title
            $title = Text::_('COM_CATEGORIES_CATEGORIES_BASE_TITLE');
        }

        // Load specific css component
        /** @var \Joomla\CMS\WebAsset\WebAssetManager $wa */
        $wa = $this->document->getWebAssetManager();
        $wa->getRegistry()->addExtensionRegistryFile($component);

        if ($wa->assetExists('style', $component . '.admin-categories')) {
            $wa->useStyle($component . '.admin-categories');
        } else {
            $wa->registerAndUseStyle($component . '.admin-categories', $component . '/administrator/categories.css');
        }

        // Prepare the toolbar.
        ToolbarHelper::title($title, 'folder categories ' . substr($component, 4) . ($section ? "-$section" : '') . '-categories');

        if ($canDo->get('core.create') || count($user->getAuthorisedCategories($component, 'core.create')) > 0) {
            $toolbar->addNew('category.add');
        }

        if (!$this->isEmptyState && ($canDo->get('core.edit.state') || $user->authorise('core.admin'))) {
            /** @var  DropdownButton $dropdown */
            $dropdown = $toolbar->dropdownButton('status-group', 'JTOOLBAR_CHANGE_STATUS')
                ->toggleSplit(false)
                ->icon('icon-ellipsis-h')
                ->buttonClass('btn btn-action')
                ->listCheck(true);

            $childBar = $dropdown->getChildToolbar();

            if ($canDo->get('core.edit.state')) {
                $childBar->publish('categories.publish')->listCheck(true);

                $childBar->unpublish('categories.unpublish')->listCheck(true);

                $childBar->archive('categories.archive')->listCheck(true);
            }

            if ($user->authorise('core.admin')) {
                $childBar->checkin('categories.checkin');
            }

            if ($canDo->get('core.edit.state') && $this->state->get('filter.published') != -2) {
                $childBar->trash('categories.trash')->listCheck(true);
            }

            // Add a batch button
            if (
                $canDo->get('core.create')
                && $canDo->get('core.edit')
                && $canDo->get('core.edit.state')
            ) {
                $childBar->popupButton('batch', 'JTOOLBAR_BATCH')
                    ->selector('collapseModal')
                    ->listCheck(true);
            }
        }

        if (!$this->isEmptyState && $canDo->get('core.admin')) {
            $toolbar->standardButton('refresh', 'JTOOLBAR_REBUILD')
                ->task('categories.rebuild');
        }

        if (!$this->isEmptyState && $this->state->get('filter.published') == -2 && $canDo->get('core.delete', $component)) {
            $toolbar->delete('categories.delete', 'JTOOLBAR_EMPTY_TRASH')
                ->message('JGLOBAL_CONFIRM_DELETE')
                ->listCheck(true);
        }

        if ($canDo->get('core.admin') || $canDo->get('core.options')) {
            $toolbar->preferences($component);
        }

        // Get the component form if it exists for the help key/url
        $name = 'category' . ($section ? ('.' . $section) : '');

        // Looking first in the component forms folder
        $path = Path::clean(JPATH_ADMINISTRATOR . "/components/$component/forms/$name.xml");

        // Looking in the component models/forms folder (J! 3)
        if (!file_exists($path)) {
            $path = Path::clean(JPATH_ADMINISTRATOR . "/components/$component/models/forms/$name.xml");
        }

        $ref_key = '';
        $url     = '';

        // Look first in form for help key and url
        if (file_exists($path)) {
            if (!$xml = simplexml_load_file($path)) {
                throw new \Exception(Text::_('JERROR_LOADFILE_FAILED'));
            }

            $ref_key = (string) $xml->listhelp['key'];
            $url     = (string) $xml->listhelp['url'];
        }

        if (!$ref_key) {
            // Compute the ref_key if it does exist in the component
            $languageKey = strtoupper($component . ($section ? "_$section" : '')) . '_CATEGORIES_HELP_KEY';

            if ($lang->hasKey($languageKey)) {
                $ref_key = $languageKey;
            } else {
                $languageKey = 'JHELP_COMPONENTS_' . strtoupper(substr($component, 4) . ($section ? "_$section" : '')) . '_CATEGORIES';

                if ($lang->hasKey($languageKey)) {
                    $ref_key = $languageKey;
                }
            }
        }

        /*
         * Get help for the categories view for the component by
         * -remotely searching in a URL defined in the category form
         * -remotely searching in a language defined dedicated URL: *component*_HELP_URL
         * -locally  searching in a component help file if helpURL param exists in the component and is set to ''
         * -remotely searching in a component URL if helpURL param exists in the component and is NOT set to ''
         */
        if (!$url) {
            if ($lang->hasKey($lang_help_url = strtoupper($component) . '_HELP_URL')) {
                $debug = $lang->setDebug(false);
                $url   = Text::_($lang_help_url);
                $lang->setDebug($debug);
            }
        }

        $toolbar->help($ref_key, ComponentHelper::getParams($component)->exists('helpURL'), $url);
    }
}
