<?php

/**
 * @package    VM OG Meta Tag - System Plugin
 * @copyright  Copyright (C) 2012-2024 VirtuePlanet Services LLP. All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 * @author     Abhishek Das <info@virtueplanet.com>
 * @link       https://www.virtueplanet.com
 *
 * @phpcs:disable PSR1.Classes.ClassDeclaration.MissingNamespace
 */

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

/**
 * VM OG Meta Tag Helper class
 *
 * Compatible with Joomla! 3, Joomla! 4 and Joomla! 5
 *
 * @since 4.0
 */
class PlgSystemVmogmetatagHelper
{
    protected $app;

    protected $params;

    protected $excluded;

    protected $fallbackTitle = '';

    protected $fallbackDescription = '';

    protected $product;

    protected $productCategory;

    protected $content = array();

    protected $contentParams = array();

    protected $tags = array();

    protected static $instance = null;

    /**
     * Constructor method.
     *
     * @param  \Joomla\CMS\Application\CMSApplication   $app
     * @param  \Joomla\Registry\Registry                $params
     *
     * @return void
     */
    public function __construct($app, &$params)
    {
        $this->app    = $app;
        $this->params = $params;
    }

    public function __get($property)
    {
        if (!property_exists($this, $property)) {
            $method = 'get' . ucfirst(strtolower($property));

            if (method_exists($this, $method)) {
                return call_user_func(array($this, $method));
            }

            $trace = debug_backtrace();

            trigger_error('Undefined property via __get(): ' . $property . ' in ' . $trace[0]['file'] . ' on line ' . $trace[0]['line'], E_USER_NOTICE);

            return null;
        }

        return $this->{$property};
    }

    public static function getInstance($app, &$params)
    {
        if (self::$instance === null) {
            self::$instance = new self($app, $params);
        }

        return self::$instance;
    }

    public function getOption()
    {
        return strtolower($this->app->input->getCmd('option', ''));
    }

    public function getView()
    {
        return strtolower($this->app->input->getCmd('view', ''));
    }

    public function getTask()
    {
        $input = $this->app->input;
        $task  = $input->post->getCmd('task', '') ? strtolower($input->post->getCmd('task', '')) : $input->getCmd('task', '');

        return strtolower($task);
    }

    public function getTmpl()
    {
        return strtolower($this->app->input->getCmd('tmpl', ''));
    }

    public function getLayout()
    {
        return strtolower($this->app->input->getCmd('layout', ''));
    }

    /**
     * Method to check if application is administration
     *
     * @return void
     */
    public function isAdmin()
    {
        return version_compare(JVERSION, '3.7.0', 'ge') ? $this->app->isClient('administrator') : $this->app->isAdmin();
    }

    /**
     * Method to check if we are in a HTML page
     *
     * @return  boolean
     */
    public function isHTML()
    {
        $input    = $this->app->input;
        $document = JFactory::getDocument();
        $isFeed   = ($document->getType() == 'feed' || $input->getWord('format') == 'feed' || $input->getWord('type') == 'rss' || $input->getWord('type') == 'atom');
        $isHTML   = ($document->getType() == 'html' && !$isFeed);

        return $isHTML;
    }

    /**
     * Method to know if the current view needs to be excluded
     *
     * @return boolean True if the view needs to be excluded
     */
    public function isExcluded()
    {
        if ($this->excluded !== null) {
            return $this->excluded;
        }

        $this->excluded = false;
        $items          = (array) $this->params->get('excludes', array());

        if (!empty($items)) {
            if (is_string($items)) {
                if (strpos($items, ',')) {
                    $items = explode(',', $items);
                    $items = array_map('trim', $items);
                } else {
                    $items = array($items);
                }
            }

            foreach ($items as $item) {
                $item = json_decode(base64_decode($item), true);

                $option = $item['option'];
                $view   = $item['view'];
                $layout = $item['layout'];

                if ($option === $this->getOption() && $view === $this->getView() && (empty($layout) || $layout === $this->getLayout())) {
                    $this->excluded = true;

                    break;
                }
            }
        }

        return $this->excluded;
    }

    public function setFallbackTitle($title)
    {
        if (!empty($title)) {
            $this->fallbackTitle = $this->escape(strip_tags($title));
        }
    }

    public function getTitle()
    {
        $document = JFactory::getDocument();

        if ($document->getTitle()) {
            return $document->getTitle();
        }

        return $this->fallbackTitle;
    }

    public function setFallbackDescription($description)
    {
        if (!empty($description)) {
            $description = strip_tags($description);
            $description = str_replace(array(PHP_EOL, "\t"), array(' ', ' '), $description);
            $description = preg_replace('/\s+/', ' ', $description);

            $this->fallbackDescription = $this->escape($description);
        }
    }

    public function getDescription()
    {
        $document = JFactory::getDocument();

        if ($document->getDescription()) {
            return $document->getDescription();
        }

        return $this->fallbackDescription;
    }

    public function setContent($content, $type)
    {
        $this->content[$type] = $content;

        $cache    = JFactory::getCache('plg_system_vmogmetatag', '');
        $cacheKey = 'content.url:' . JUri::getInstance()->toString();

        $cache->store($this->content, $cacheKey);
    }

    public function getContent($type)
    {
        if (array_key_exists($type, $this->content)) {
            return $this->content[$type];
        }

        $cache    = JFactory::getCache('plg_system_vmogmetatag', '');
        $cacheKey = 'content.url:' . JUri::getInstance()->toString();
        $content  = $cache->get($cacheKey);

        if (is_array($content) && array_key_exists($type, $content)) {
            $this->content[$type] = $content[$type];

            return $this->content[$type];
        }

        return null;
    }

    public function setContentParams($params, $type)
    {
        $this->contentParams[$type] = $params;

        $cache    = JFactory::getCache('plg_system_vmogmetatag', '');
        $cacheKey = 'params.url:' . JUri::getInstance()->toString();

        $cache->store($this->contentParams, $cacheKey);
    }

    public function getContentParams($type)
    {
        if (array_key_exists($type, $this->contentParams)) {
            return $this->contentParams[$type];
        }

        $cache    = JFactory::getCache('plg_system_vmogmetatag', '');
        $cacheKey = 'params.url:' . JUri::getInstance()->toString();
        $params   = $cache->get($cacheKey);

        if (is_array($params) && array_key_exists($type, $params)) {
            $this->contentParams[$type] = $params[$type];

            return $this->contentParams[$type];
        }

        return null;
    }

    public function setProduct($product)
    {
        $this->product = $product;
    }

    public function getProduct()
    {
        return $this->product;
    }

    public function setProductCategory($productCategory)
    {
        $this->productCategory = $productCategory;
    }

    public function getProductCategory()
    {
        return $this->productCategory;
    }

    public function getVirtueMartImageList($item)
    {
        $imageList = array();

        if (!empty($item->images)) {
            foreach ($item->images as $image) {
                $imageData = new stdClass();

                $imageData->url    = '';
                $imageData->width  = '';
                $imageData->height = '';
                $imageData->type   = '';

                if (!$image->file_is_forSale) {
                    if (substr($image->file_url, 0, 4) == 'http') {
                        $imageData->url = $image->file_url;
                    } else {
                        $mediaPath = JPath::clean(JPATH_SITE . '/' . $image->file_url);

                        if (!file_exists($mediaPath)) {
                            $imageData = $this->getImageData($image->theme_url . 'assets/images/vmgeneral/' . VmConfig::get('no_image_set'));
                        } else {
                            $imageData = $this->getImageData($image->file_url);
                        }
                    }
                } else {
                    if (empty($image->file_name)) {
                        if ($image->file_is_downloadable) {
                            $imageData = $this->getImageData($image->theme_url . 'assets/images/vmgeneral/' . VmConfig::get('downloadable', 'zip.png'));
                        } else {
                            $imageData = $this->getImageData($image->theme_url . 'assets/images/vmgeneral/' . VmConfig::get('no_image_set'));
                        }
                    } elseif (!empty($image->file_url_thumb)) {
                        if (substr($image->file_url_thumb, 0, 4) == 'http') {
                            $imageData->url = $image->file_url_thumb;
                        } else {
                            $mediaPath = JPath::clean(JPATH_SITE . '/' . $image->file_url_thumb);

                            if (!file_exists($mediaPath)) {
                                $imageData = $this->getImageData($image->theme_url . 'assets/images/vmgeneral/' . VmConfig::get('no_image_set'));
                            } else {
                                $imageData = $this->getImageData($image->file_url);
                            }
                        }
                    }
                }

                $imageList[] = $imageData;
            }
        }

        return $imageList;
    }

    /**
     * Method to set meta tag
     *
     * @param  string  $name  Name of the tag
     * @param  string  $value Tag value
     *
     * @return void
     */
    public function setTag(string $name, string $value)
    {
        if (!empty($value)) {
            $this->tags[$name] = $value;
        }
    }

    /**
     * Method to get the array of tags
     *
     * @return JRegistry object
     */
    public function getTags()
    {
        $tags = new JRegistry();

        $tags->loadArray($this->tags);

        return $tags;
    }

    /**
     * Method to check if current page is home page.
     *
     * @return boolean
     */
    public function isHomePage()
    {
        $menus      = $this->app->getMenu();
        $activeMenu = $menus->getActive();

        if (is_object($activeMenu) && property_exists($activeMenu, 'home') && $activeMenu->home) {
            return true;
        }

        return false;
    }

    /**
     * Method to get image data.
     *
     * @param  string  $url URL of the image.
     *
     * @return object Image data object.
     */
    public function getImageData($url)
    {
        $image = new stdClass();

        $image->url    = '';
        $image->width  = '';
        $image->height = '';
        $image->type   = '';

        if (version_compare(JVERSION, '4.0.0', 'ge') && $url) {
            $url = Joomla\CMS\Helper\MediaHelper::getCleanMediaFieldValue($url);
        }

        $path = JPath::clean(JPATH_ROOT . '/' . $url);

        if (file_exists($path)) {
            $url  = substr($path, strlen(JPATH_ROOT . DIRECTORY_SEPARATOR));
            $url  = implode('/', explode(DIRECTORY_SEPARATOR, $url));
            $root = rtrim(JUri::root(), '/');

            $image->url  = $root . '/' . str_replace(' ', '%20', $url);

            if (function_exists('getimagesize')) {
                $imageInfo = @getimagesize($path);

                if (!empty($imageInfo) && isset($imageInfo[0]) && isset($imageInfo[1])) {
                    $image->width  = $imageInfo[0];
                    $image->height = $imageInfo[1];
                }

                if (!empty($imageInfo) && !empty($imageInfo['mime'])) {
                    $image->type = $imageInfo['mime'];
                }
            }
        }

        return $image;
    }

    /**
     * Escapes a value for output in a view script.
     *
     * If escaping mechanism is htmlspecialchars, use
     * {@link $_charset} setting.
     *
     * @param   mixed  $var  The output to escape.
     *
     * @return  mixed  The escaped value.
     *
     * @note the ENT_COMPAT flag was replaced by ENT_QUOTES in Joomla 4.0 to also escape single quotes
     */
    public function escape($var)
    {
        if ($var === null) {
            return '';
        }

        return htmlspecialchars($var, ENT_QUOTES, 'UTF-8');
    }
}