<?php

/**
 * @package     Joomla.Administrator
 * @subpackage  com_installer
 *
 * @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\Installer\Administrator\View\Discover;

use Joomla\CMS\MVC\View\GenericDataException;
use Joomla\Component\Installer\Administrator\Model\DiscoverModel;
use Joomla\Component\Installer\Administrator\View\Installer\HtmlView as InstallerViewDefault;

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

/**
 * Extension Manager Discover View
 *
 * @since  1.6
 */
class HtmlView extends InstallerViewDefault
{
    /**
     * An array of items
     *
     * @var   array
     *
     * @since  5.2.0
     */
    protected $items;

    /**
     * The pagination object
     *
     * @var    \Joomla\CMS\Pagination\Pagination
     *
     * @since  5.2.0
     */
    protected $pagination;

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

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

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

    /**
     * Display the view.
     *
     * @param   string  $tpl  Template
     *
     * @return  void
     *
     * @since   1.6
     */
    public function display($tpl = null)
    {
        /** @var DiscoverModel $model */
        $model = $this->getModel();

        // Run discover from the model.
        if (!$model->checkExtensions()) {
            $model->discover();
        }

        // Get data from the model.
        $this->items         = $model->getItems();
        $this->pagination    = $model->getPagination();
        $this->filterForm    = $model->getFilterForm();
        $this->activeFilters = $model->getActiveFilters();

        if (!\count($this->items) && $this->isEmptyState = $model->getIsEmptyState()) {
            $this->setLayout('emptystate');
        }

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

        parent::display($tpl);
    }

    /**
     * Add the page title and toolbar.
     *
     * @return  void
     *
     * @since   3.1
     */
    protected function addToolbar()
    {
        $toolbar = $this->getDocument()->getToolbar();

        if (!$this->isEmptyState) {
            $toolbar->standardButton('upload', 'JTOOLBAR_INSTALL', 'discover.install')
                ->listCheck(true)
                ->icon('icon-upload');
        }

        $toolbar->standardButton('discover', 'COM_INSTALLER_TOOLBAR_DISCOVER', 'discover.refresh')
            ->icon('icon-refresh');
        $toolbar->divider();

        parent::addToolbar();

        $toolbar->help('Extensions:_Discover');
    }
}
