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   1  <?php
   2  /**
   3   *
   4   * This file is part of the phpBB Forum Software package.
   5   *
   6   * @copyright (c) phpBB Limited <https://www.phpbb.com>
   7   * @license GNU General Public License, version 2 (GPL-2.0)
   8   *
   9   * For full copyright and license information, please see
  10   * the docs/CREDITS.txt file.
  11   *
  12   */
  13  
  14  namespace phpbb\feed;
  15  
  16  /**
  17   * Active Topics feed
  18   *
  19   * This will give you the last {$this->num_items} topics
  20   * with replies made within the last {$this->sort_days} days
  21   * including the last post.
  22   */
  23  class topics_active extends topic_base
  24  {
  25      protected $sort_days = 7;
  26  
  27      /**
  28       * {@inheritdoc}
  29       */
  30  	public function set_keys()
  31      {
  32          parent::set_keys();
  33  
  34          $this->set('author_id',    'topic_last_poster_id');
  35          $this->set('creator',    'topic_last_poster_name');
  36      }
  37  
  38      /**
  39       * {@inheritdoc}
  40       */
  41  	protected function get_sql()
  42      {
  43          $forum_ids_read = $this->get_readable_forums();
  44          if (empty($forum_ids_read))
  45          {
  46              return false;
  47          }
  48  
  49          $in_fid_ary = array_intersect($forum_ids_read, $this->get_forum_ids());
  50          $in_fid_ary = array_diff($in_fid_ary, $this->get_passworded_forums());
  51          if (empty($in_fid_ary))
  52          {
  53              return false;
  54          }
  55  
  56          // Search for topics in last X days
  57          $last_post_time_sql = ($this->sort_days) ? ' AND topic_last_post_time > ' . (time() - ($this->sort_days * 24 * 3600)) : '';
  58  
  59          // We really have to get the post ids first!
  60          $sql = 'SELECT topic_last_post_id, topic_last_post_time
  61              FROM ' . TOPICS_TABLE . '
  62              WHERE topic_moved_id = 0
  63                  AND ' . $this->content_visibility->get_forums_visibility_sql('topic', $in_fid_ary) . '
  64                  ' . $last_post_time_sql . '
  65              ORDER BY topic_last_post_time DESC, topic_last_post_id DESC';
  66          $result = $this->db->sql_query_limit($sql, $this->num_items);
  67  
  68          $post_ids = array();
  69          while ($row = $this->db->sql_fetchrow($result))
  70          {
  71              $post_ids[] = (int) $row['topic_last_post_id'];
  72          }
  73          $this->db->sql_freeresult($result);
  74  
  75          if (empty($post_ids))
  76          {
  77              return false;
  78          }
  79  
  80          parent::fetch_attachments($post_ids);
  81  
  82          $this->sql = array(
  83              'SELECT'    => 'f.forum_id, f.forum_name,
  84                              t.topic_id, t.topic_title, t.topic_posts_approved, t.topic_posts_unapproved, t.topic_posts_softdeleted, t.topic_views,
  85                              t.topic_last_poster_id, t.topic_last_poster_name, t.topic_last_post_time,
  86                              p.post_id, p.post_time, p.post_edit_time, p.post_text, p.bbcode_bitfield, p.bbcode_uid, p.enable_bbcode, p.enable_smilies, p.enable_magic_url, p.post_attachment, t.topic_visibility',
  87              'FROM'        => array(
  88                  TOPICS_TABLE    => 't',
  89                  POSTS_TABLE        => 'p',
  90              ),
  91              'LEFT_JOIN'    => array(
  92                  array(
  93                      'FROM'    => array(FORUMS_TABLE => 'f'),
  94                      'ON'    => 'p.forum_id = f.forum_id',
  95                  ),
  96              ),
  97              'WHERE'        => 'p.topic_id = t.topic_id
  98                              AND ' . $this->db->sql_in_set('p.post_id', $post_ids),
  99              'ORDER_BY'    => 'p.post_time DESC, p.post_id DESC',
 100          );
 101  
 102          return true;
 103      }
 104  
 105      /**
 106       * Returns the ids of the forums not excluded from the active list
 107       *
 108       * @return int[]
 109       */
 110  	private function get_forum_ids()
 111      {
 112          static $forum_ids;
 113  
 114          $cache_name    = 'feed_topic_active_forum_ids';
 115  
 116          if (!isset($forum_ids) && ($forum_ids = $this->cache->get('_' . $cache_name)) === false)
 117          {
 118              $sql = 'SELECT forum_id
 119                  FROM ' . FORUMS_TABLE . '
 120                  WHERE forum_type = ' . FORUM_POST . '
 121                      AND ' . $this->db->sql_bit_and('forum_options', FORUM_OPTION_FEED_EXCLUDE, '= 0') . '
 122                      AND ' . $this->db->sql_bit_and('forum_flags', round(log(FORUM_FLAG_ACTIVE_TOPICS, 2)), '<> 0');
 123              $result = $this->db->sql_query($sql);
 124  
 125              $forum_ids = array();
 126              while ($forum_id = (int) $this->db->sql_fetchfield('forum_id'))
 127              {
 128                  $forum_ids[$forum_id] = $forum_id;
 129              }
 130              $this->db->sql_freeresult($result);
 131  
 132              $this->cache->put('_' . $cache_name, $forum_ids, 180);
 133          }
 134  
 135          return $forum_ids;
 136      }
 137  
 138      /**
 139       * {@inheritdoc}
 140       */
 141  	public function adjust_item(&$item_row, &$row)
 142      {
 143          parent::adjust_item($item_row, $row);
 144  
 145          $item_row['title'] = (isset($row['forum_name']) && $row['forum_name'] !== '') ? $row['forum_name'] . ' ' . $this->separator . ' ' . $item_row['title'] : $item_row['title'];
 146      }
 147  }