<?php

/**
 * @copyright
 * @package    Easybook Reloaded - EBR for Joomla! 3.x
 * @author     Viktor Vogel <admin@kubik-rubik.de>
 * @version    3.4.1.1-FREE - 2021-08-29
 * @link       https://kubik-rubik.de/ebr-easybook-reloaded
 *
 * @license    GNU/GPL
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
defined('_JEXEC') || die('Restricted access');

use EasybookReloaded\{Helper, Content};
use Joomla\CMS\MVC\View\HtmlView;
use Joomla\CMS\{Factory, Uri\Uri, HTML\HTMLHelper, Router\Route, Menu\AbstractMenu, Document\HtmlDocument};

/**
 * Class EasybookReloadedViewEasybookReloaded
 *
 * @since   3.4.0-FREE
 * @version 3.4.1.0-FREE
 */
class EasybookReloadedViewEasybookReloaded extends HtmlView
{
    /**
     * @var object $entries
     * @since 3.4.0-FREE
     */
    protected $entries;

    /**
     * @var object $gbData
     * @since 3.4.0-FREE
     */
    protected $gbData;

    /**
     * @var int $count
     * @since 3.4.0-FREE
     */
    protected $count;

    /**
     * @var object $pagination
     * @since 3.4.0-FREE
     */
    protected $pagination;

    /**
     * @var string $heading
     * @since 3.4.0-FREE
     */
    protected $heading;

    /**
     * @var int $entryId
     * @since 3.4.0-FREE
     */
    protected $entryId;

    /**
     * @var int $gbId
     * @since 3.4.0-FREE
     */
    protected $gbId;

    /**
     * Executes and displays a template file
     *
     * @param string|null $tpl
     *
     * @return mixed
     * @throws Exception
     * @since   3.4.0-FREE
     * @version 3.4.1.0-FREE
     */
    public function display($tpl = null)
    {
        // Check whether a guestbook ID is set in the request
        $gbId = $this->get('GbId');

        if (!is_int($gbId)) {
            return parent::display('error');
        }

        // Get the required data
        $this->entries = $this->get('Data');
        $this->gbData = $this->get('GbData');
        $this->count = $this->get('Total');
        $this->pagination = $this->get('Pagination');
        $this->entryId = Factory::getApplication()->input->getInt('entryid');
        $this->gbId = $gbId;

        // Set the head data
        $this->addHeadData();

        // Remove cache from Page Cache plugin if required
        Content::cleanCache($gbId);

        if ($gbId === 0) {
            $this->setLayout('all');

            return parent::display();
        }

        parent::display($tpl);
    }

    /**
     * Adds the head data
     *
     * @throws Exception
     * @since   3.4.0-FREE
     * @version 3.4.1.0-FREE
     */
    private function addHeadData(): void
    {
        /** @var HtmlDocument $document */
        $document = Factory::getDocument();

        // Set CSS File
        $cssFile = 'easybookreloaded';
        $template = (int)Helper::getParams('template', 0);

        if ($template === 1) {
            $cssFile .= 'dark';
        } elseif ($template === 2) {
            $cssFile .= 'transparent';
        }

        $document->addStyleSheet(Uri::root() . 'components/com_easybookreloaded/css/' . $cssFile . '.css');

        // JavaScript
        HTMLHelper::_('jquery.framework');

        $jsCode = 'jQuery(document).ready(function() {
                        jQuery(".easy_top", this).each(function() {
                            jQuery(this).css("cursor", "pointer");
                            jQuery(this).click(function() {
                                let url = new URL(window.location.href);
                                if (!url.href.match(/entryid/)) {
                                    url.searchParams.append("entryid", jQuery(this).attr("data-id"));
                                    window.location.href = url.href;
                                }
                            });
                        });
                    });';

        $document->addScriptDeclaration($jsCode);

        // Show RSS Feed
        $link = '&format=feed&limitstart=';
        $attribs = ['type' => 'application/rss+xml', 'title' => 'RSS 2.0'];
        $document->addHeadLink(Route::_($link . '&type=rss'), 'alternate', 'rel', $attribs);
        $attribs = ['type' => 'application/atom+xml', 'title' => 'Atom 1.0'];
        $document->addHeadLink(Route::_($link . '&type=atom'), 'alternate', 'rel', $attribs);

        // Add meta data from menu link
        $menus = AbstractMenu::getInstance('site');
        $menu = $menus->getActive();

        if (!empty($menu)) {
            if ($menu->params->get('menu-meta_description')) {
                $document->setDescription($menu->params->get('menu-meta_description'));
            }

            if ($menu->params->get('menu-meta_keywords')) {
                $document->setMetaData('keywords', $menu->params->get('menu-meta_keywords'));
            }

            if ($menu->params->get('robots')) {
                $document->setMetaData('robots', $menu->params->get('robots'));
            }
        }

        $this->heading = $document->getTitle();

        // Add HTML Head Link
        if (method_exists($document, 'addHeadLink')) {
            $paginationData = $this->pagination->getData();

            if ($paginationData->start->link) {
                $document->addHeadLink($paginationData->start->link, 'first');
            }

            if ($paginationData->previous->link) {
                $document->addHeadLink($paginationData->previous->link, 'prev');
            }

            if ($paginationData->next->link) {
                $document->addHeadLink($paginationData->next->link, 'next');
            }

            if ($paginationData->end->link) {
                $document->addHeadLink($paginationData->end->link, 'last');
            }
        }
    }
}