+ <li>[Feature] Add unread posts quick search option (Bug #46765 - Patch by rxu)</li>

+ 'U_SEARCH_UNREAD' => append_sid("{$phpbb_root_path}search.$phpEx", 'search_id=unreadposts'),

+/*

+* Get list of unread topics

+* only for registered users and non-cookie tracking this function is used

+*/

+function get_unread_topics_list($user_id = false, $sql_extra = '')

+{

+ global $config, $db, $user;

+

+ if($user_id === false)

+ {

+ $user_id = $user->data['user_id'];

+ }

+

+ $tracked_topics_list = $unread_topics_list = $read_topics_list = array();

+ $tracked_forums_list = array();

+

+ if ($config['load_db_lastread'] && $user->data['is_registered'])

+ {

+ // List of the tracked forums (not ideal, hope the better way will be found)

+ // This list is to fetch later the forums user never read (fully) before

+ $sql = 'SELECT forum_id FROM ' . FORUMS_TRACK_TABLE . "

+ WHERE user_id = {$user_id}";

+ $result = $db->sql_query($sql);

+ while($row = $db->sql_fetchrow($result))

+ {

+ $tracked_forums_list[] = $row['forum_id'];

+ }

+ $db->sql_freeresult($result);

+

+ // Get list of the unread topics - on topics tracking as the first step

+ $sql = 'SELECT t.topic_id, t.topic_last_post_time, tt.mark_time FROM ' . TOPICS_TABLE . ' t, ' . TOPICS_TRACK_TABLE . " tt

+ WHERE t.topic_id = tt.topic_id

+ AND t.topic_last_post_time >= tt.mark_time

+ AND tt.user_id = {$user_id}

+ $sql_extra";

+ $result = $db->sql_query($sql);

+ while($row = $db->sql_fetchrow($result))

+ {

+ if($row['topic_last_post_time'] == $row['mark_time'])

+ {

+ // Check if there're read topics for the forums having unread ones

+ $read_topics_list[$row['topic_id']] = $row['mark_time'];

+ }

+ else

+ {

+ $unread_topics_list[$row['topic_id']] = $row['mark_time'];

+ }

+ }

+ $db->sql_freeresult($result);

+

+ // Get the full list of the tracked topics

+ $tracked_topics_list = array_merge(array_keys($unread_topics_list), array_keys($read_topics_list));

+

+ // Get list of the unread topics - on forums tracking as the second step

+ // We don't take in account topics tracked before

+ $sql = 'SELECT t.topic_id, ft.mark_time FROM ' . TOPICS_TABLE . ' t, ' . FORUMS_TRACK_TABLE . ' ft

+ WHERE t.forum_id = ft.forum_id

+ AND t.topic_last_post_time > ft.mark_time

+ AND ' . $db->sql_in_set('t.topic_id', $tracked_topics_list, true, true) . "

+ AND ft.user_id = {$user_id}

+ $sql_extra";

+ $result = $db->sql_query($sql);

+ while($row = $db->sql_fetchrow($result))

+ {

+ $unread_topics_list[$row['topic_id']] = $row['mark_time'];

+ }

+ $db->sql_freeresult($result);

+

+ // And the last step - find unread topics were not found before (that can mean a user has never read some forums)

+ $sql = 'SELECT topic_id FROM ' . TOPICS_TABLE . "

+ WHERE topic_last_post_time > {$user->data['user_lastmark']}

+ AND " . $db->sql_in_set('topic_id', array_keys($unread_topics_list), true, true) . '

+ AND ' . $db->sql_in_set('forum_id', $tracked_forums_list, true, true) . "

+ $sql_extra";

+ $result = $db->sql_query_limit($sql, 1000);

+ while($row = $db->sql_fetchrow($result))

+ {

+ $unread_topics_list[$row['topic_id']] = $user->data['user_lastmark'];

+ }

+ $db->sql_freeresult($result);

+ }

+ else if ($config['load_anon_lastread'] || $user->data['is_registered'])

+ {

+ // We do not implement unread topics list for cookie based tracking

+ // because it would require expensive database queries

+ }

+

+ return $unread_topics_list;

+}

+

+ 'SEARCH_UNREAD' => 'View unread posts',

+ case 'unreadposts':

+ if ($config['load_db_lastread'] && $user->data['is_registered'])

+ {

+ $l_search_title = $user->lang['SEARCH_UNREAD'];

+ // force sorting

+ $show_results = 'topics';

+ $sort_key = 't';

+ $sort_dir = 'd';

+ $sort_by_sql['t'] = 't.topic_last_post_time';

+ $sql_sort = 'ORDER BY ' . $sort_by_sql[$sort_key] . (($sort_dir == 'a') ? ' ASC' : ' DESC');

+

+ gen_sort_selects($limit_days, $sort_by_text, $sort_days, $sort_key, $sort_dir, $s_limit_days, $s_sort_key, $s_sort_dir, $u_sort_param);

+ $s_sort_key = $s_sort_dir = $u_sort_param = $s_limit_days = '';

+

+ $unread_list = array();

+ $unread_list = get_unread_topics_list();

+

+ if(!empty($unread_list))

+ {

+ $sql = 'SELECT t.topic_id

+ FROM ' . TOPICS_TABLE . ' t

+ WHERE ' . $db->sql_in_set('t.topic_id', array_keys($unread_list)) . '

+ AND t.topic_moved_id = 0

+ ' . str_replace(array('p.', 'post_'), array('t.', 'topic_'), $m_approve_fid_sql) . '

+ ' . ((sizeof($ex_fid_ary)) ? 'AND ' . $db->sql_in_set('t.forum_id', $ex_fid_ary, true) : '') . "

+ $sql_sort";

+ $field = 'topic_id';

+ }

+ break;

+ }

+ // Do nothing if it's cookie based read tracking

+ // Just do not break and let user to see newposts

+

+ <li><a href="{U_SEARCH_UNANSWERED}">{L_SEARCH_UNANSWERED}</a><!-- IF S_USER_LOGGED_IN --> &bull; <a href="{U_SEARCH_UNREAD}">{L_SEARCH_UNREAD}</a> &bull; <a href="{U_SEARCH_NEW}">{L_SEARCH_NEW}</a><!-- ENDIF --> &bull; <a href="{U_SEARCH_ACTIVE_TOPICS}">{L_SEARCH_ACTIVE_TOPICS}</a></li>

+ <span style="float: {S_CONTENT_FLOW_END};"><a href="{U_SEARCH_UNREAD}">{L_SEARCH_UNREAD}</a> | <a href="{U_SEARCH_NEW}">{L_SEARCH_NEW}</a> | <a href="{U_SEARCH_SELF}">{L_SEARCH_SELF}</a></span>