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   1  <?php
   2  
   3  /**
   4   * @package     Joomla.Site
   5   * @subpackage  com_newsfeeds
   6   *
   7   * @copyright   (C) 2006 Open Source Matters, Inc. <https://www.joomla.org>
   8   * @license     GNU General Public License version 2 or later; see LICENSE.txt
   9   */
  10  
  11  namespace Joomla\Component\Newsfeeds\Site\View\Newsfeed;
  12  
  13  use Joomla\CMS\Categories\Categories;
  14  use Joomla\CMS\Factory;
  15  use Joomla\CMS\Feed\FeedFactory;
  16  use Joomla\CMS\Helper\TagsHelper;
  17  use Joomla\CMS\Language\Text;
  18  use Joomla\CMS\MVC\View\GenericDataException;
  19  use Joomla\CMS\MVC\View\HtmlView as BaseHtmlView;
  20  use Joomla\Component\Newsfeeds\Site\Helper\RouteHelper;
  21  
  22  // phpcs:disable PSR1.Files.SideEffects
  23  \defined('_JEXEC') or die;
  24  // phpcs:enable PSR1.Files.SideEffects
  25  
  26  /**
  27   * HTML View class for the Newsfeeds component
  28   *
  29   * @since  1.0
  30   */
  31  class HtmlView extends BaseHtmlView
  32  {
  33      /**
  34       * The model state
  35       *
  36       * @var     object
  37       *
  38       * @since   1.6
  39       */
  40      protected $state;
  41  
  42      /**
  43       * The newsfeed item
  44       *
  45       * @var     object
  46       *
  47       * @since   1.6
  48       */
  49      protected $item;
  50  
  51      /**
  52       * UNUSED?
  53       *
  54       * @var     boolean
  55       *
  56       * @since   1.6
  57       */
  58      protected $print;
  59  
  60      /**
  61       * The current user instance
  62       *
  63       * @var    \Joomla\CMS\User\User|null
  64       *
  65       * @since  4.0.0
  66       */
  67      protected $user = null;
  68  
  69      /**
  70       * The page class suffix
  71       *
  72       * @var    string
  73       *
  74       * @since  4.0.0
  75       */
  76      protected $pageclass_sfx = '';
  77  
  78      /**
  79       * The page parameters
  80       *
  81       * @var    \Joomla\Registry\Registry|null
  82       *
  83       * @since  4.0.0
  84       */
  85      protected $params;
  86  
  87      /**
  88       * Execute and display a template script.
  89       *
  90       * @param   string  $tpl  The name of the template file to parse; automatically searches through the template paths.
  91       *
  92       * @return  void
  93       *
  94       * @since   1.6
  95       */
  96      public function display($tpl = null)
  97      {
  98          $app  = Factory::getApplication();
  99          $user = $this->getCurrentUser();
 100  
 101          // Get view related request variables.
 102          $print = $app->input->getBool('print');
 103  
 104          // Get model data.
 105          $state = $this->get('State');
 106          $item  = $this->get('Item');
 107  
 108          // Check for errors.
 109          // @TODO: Maybe this could go into ComponentHelper::raiseErrors($this->get('Errors'))
 110          if (count($errors = $this->get('Errors'))) {
 111              throw new GenericDataException(implode("\n", $errors), 500);
 112          }
 113  
 114          // Add router helpers.
 115          $item->slug = $item->alias ? ($item->id . ':' . $item->alias) : $item->id;
 116          $item->catslug = $item->category_alias ? ($item->catid . ':' . $item->category_alias) : $item->catid;
 117          $item->parent_slug = $item->category_alias ? ($item->parent_id . ':' . $item->parent_alias) : $item->parent_id;
 118  
 119          // Merge newsfeed params. If this is single-newsfeed view, menu params override newsfeed params
 120          // Otherwise, newsfeed params override menu item params
 121          $params = $state->get('params');
 122          $newsfeed_params = clone $item->params;
 123          $active = $app->getMenu()->getActive();
 124          $temp = clone $params;
 125  
 126          // Check to see which parameters should take priority
 127          if ($active) {
 128              $currentLink = $active->link;
 129  
 130              // If the current view is the active item and a newsfeed view for this feed, then the menu item params take priority
 131              if (strpos($currentLink, 'view=newsfeed') && strpos($currentLink, '&id=' . (string) $item->id)) {
 132                  // $item->params are the newsfeed params, $temp are the menu item params
 133                  // Merge so that the menu item params take priority
 134                  $newsfeed_params->merge($temp);
 135                  $item->params = $newsfeed_params;
 136  
 137                  // Load layout from active query (in case it is an alternative menu item)
 138                  if (isset($active->query['layout'])) {
 139                      $this->setLayout($active->query['layout']);
 140                  }
 141              } else {
 142                  // Current view is not a single newsfeed, so the newsfeed params take priority here
 143                  // Merge the menu item params with the newsfeed params so that the newsfeed params take priority
 144                  $temp->merge($newsfeed_params);
 145                  $item->params = $temp;
 146  
 147                  // Check for alternative layouts (since we are not in a single-newsfeed menu item)
 148                  if ($layout = $item->params->get('newsfeed_layout')) {
 149                      $this->setLayout($layout);
 150                  }
 151              }
 152          } else {
 153              // Merge so that newsfeed params take priority
 154              $temp->merge($newsfeed_params);
 155              $item->params = $temp;
 156  
 157              // Check for alternative layouts (since we are not in a single-newsfeed menu item)
 158              if ($layout = $item->params->get('newsfeed_layout')) {
 159                  $this->setLayout($layout);
 160              }
 161          }
 162  
 163          // Check the access to the newsfeed
 164          $levels = $user->getAuthorisedViewLevels();
 165  
 166          if (!in_array($item->access, $levels) || (in_array($item->access, $levels) && (!in_array($item->category_access, $levels)))) {
 167              $app->enqueueMessage(Text::_('JERROR_ALERTNOAUTHOR'), 'error');
 168              $app->setHeader('status', 403, true);
 169  
 170              return;
 171          }
 172  
 173          // Get the current menu item
 174          $params = $app->getParams();
 175  
 176          $params->merge($item->params);
 177  
 178          try {
 179              $feed = new FeedFactory();
 180              $this->rssDoc = $feed->getFeed($item->link);
 181          } catch (\InvalidArgumentException $e) {
 182              $msg = Text::_('COM_NEWSFEEDS_ERRORS_FEED_NOT_RETRIEVED');
 183          } catch (\RuntimeException $e) {
 184              $msg = Text::_('COM_NEWSFEEDS_ERRORS_FEED_NOT_RETRIEVED');
 185          }
 186  
 187          if (empty($this->rssDoc)) {
 188              $msg = Text::_('COM_NEWSFEEDS_ERRORS_FEED_NOT_RETRIEVED');
 189          }
 190  
 191          $feed_display_order = $params->get('feed_display_order', 'des');
 192  
 193          if ($feed_display_order === 'asc') {
 194              $this->rssDoc->reverseItems();
 195          }
 196  
 197          // Escape strings for HTML output
 198          $this->pageclass_sfx = htmlspecialchars($params->get('pageclass_sfx', ''));
 199  
 200          $this->params = $params;
 201          $this->state  = $state;
 202          $this->item   = $item;
 203          $this->user   = $user;
 204  
 205          if (!empty($msg)) {
 206              $this->msg = $msg;
 207          }
 208  
 209          $this->print = $print;
 210  
 211          $item->tags = new TagsHelper();
 212          $item->tags->getItemTags('com_newsfeeds.newsfeed', $item->id);
 213  
 214          // Increment the hit counter of the newsfeed.
 215          $model = $this->getModel();
 216          $model->hit();
 217  
 218          $this->_prepareDocument();
 219  
 220          parent::display($tpl);
 221      }
 222  
 223      /**
 224       * Prepares the document
 225       *
 226       * @return  void
 227       *
 228       * @since   1.6
 229       */
 230      protected function _prepareDocument()
 231      {
 232          $app     = Factory::getApplication();
 233          $pathway = $app->getPathway();
 234  
 235          // Because the application sets a default page title,
 236          // we need to get it from the menu item itself
 237          $menu = $app->getMenu()->getActive();
 238  
 239          if ($menu) {
 240              $this->params->def('page_heading', $this->params->get('page_title', $menu->title));
 241          } else {
 242              $this->params->def('page_heading', Text::_('COM_NEWSFEEDS_DEFAULT_PAGE_TITLE'));
 243          }
 244  
 245          $title = $this->params->get('page_title', '');
 246  
 247          $id = (int) @$menu->query['id'];
 248  
 249          // If the menu item does not concern this newsfeed
 250          if (
 251              $menu && (!isset($menu->query['option']) || $menu->query['option'] !== 'com_newsfeeds' || $menu->query['view'] !== 'newsfeed'
 252              || $id != $this->item->id)
 253          ) {
 254              // If this is not a single newsfeed menu item, set the page title to the newsfeed title
 255              if ($this->item->name) {
 256                  $title = $this->item->name;
 257              }
 258  
 259              $path = array(array('title' => $this->item->name, 'link' => ''));
 260              $category = Categories::getInstance('Newsfeeds')->get($this->item->catid);
 261  
 262              while (
 263                  (!isset($menu->query['option']) || $menu->query['option'] !== 'com_newsfeeds' || $menu->query['view'] === 'newsfeed'
 264                  || $id != $category->id) && $category->id > 1
 265              ) {
 266                  $path[] = array('title' => $category->title, 'link' => RouteHelper::getCategoryRoute($category->id));
 267                  $category = $category->getParent();
 268              }
 269  
 270              $path = array_reverse($path);
 271  
 272              foreach ($path as $item) {
 273                  $pathway->addItem($item['title'], $item['link']);
 274              }
 275          }
 276  
 277          if (empty($title)) {
 278              $title = $this->item->name;
 279          }
 280  
 281          $this->setDocumentTitle($title);
 282  
 283          if ($this->item->metadesc) {
 284              $this->document->setDescription($this->item->metadesc);
 285          } elseif ($this->params->get('menu-meta_description')) {
 286              $this->document->setDescription($this->params->get('menu-meta_description'));
 287          }
 288  
 289          if ($this->params->get('robots')) {
 290              $this->document->setMetaData('robots', $this->params->get('robots'));
 291          }
 292  
 293          if ($app->get('MetaAuthor') == '1') {
 294              $this->document->setMetaData('author', $this->item->author);
 295          }
 296  
 297          $mdata = $this->item->metadata->toArray();
 298  
 299          foreach ($mdata as $k => $v) {
 300              if ($v) {
 301                  $this->document->setMetaData($k, $v);
 302              }
 303          }
 304      }
 305  }