Gazelle/sections/ajax/forum/forum.php
2013-06-04 08:00:34 +00:00

170 lines
5.1 KiB
PHP

<?
/**********|| Page to show individual forums || ********************************\
Things to expect in $_GET:
ForumID: ID of the forum curently being browsed
page: The page the user's on.
page = 1 is the same as no page
********************************************************************************/
//---------- Things to sort out before it can start printing/generating content
// Check for lame SQL injection attempts
$ForumID = $_GET['forumid'];
if (!is_number($ForumID)) {
print json_encode(array('status' => 'failure'));
die();
}
if (isset($_GET['pp'])) {
$PerPage = $_GET['pp'];
} elseif (isset($LoggedUser['PostsPerPage'])) {
$PerPage = $LoggedUser['PostsPerPage'];
} else {
$PerPage = POSTS_PER_PAGE;
}
list($Page, $Limit) = Format::page_limit(TOPICS_PER_PAGE);
//---------- Get some data to start processing
// Caching anything beyond the first page of any given forum is just wasting ram
// users are more likely to search then to browse to page 2
if ($Page == 1) {
list($Forum,,,$Stickies) = $Cache->get_value('forums_'.$ForumID);
}
if (!isset($Forum) || !is_array($Forum)) {
$DB->query("
SELECT
t.ID,
t.Title,
t.AuthorID,
t.IsLocked,
t.IsSticky,
t.NumPosts,
t.LastPostID,
t.LastPostTime,
t.LastPostAuthorID
FROM forums_topics AS t
WHERE t.ForumID = '$ForumID'
ORDER BY t.IsSticky DESC, t.LastPostTime DESC
LIMIT $Limit"); // Can be cached until someone makes a new post
$Forum = $DB->to_array('ID',MYSQLI_ASSOC, false);
if ($Page == 1) {
$DB->query("
SELECT COUNT(ID)
FROM forums_topics
WHERE ForumID='$ForumID'
AND IsSticky='1'");
list($Stickies) = $DB->next_record();
$Cache->cache_value('forums_'.$ForumID, array($Forum, '', 0, $Stickies), 0);
}
}
if (!isset($Forums[$ForumID])) {
json_die("failure");
}
// Make sure they're allowed to look at the page
if (!check_perms('site_moderate_forums')) {
if (isset($LoggedUser['CustomForums'][$ForumID]) && $LoggedUser['CustomForums'][$ForumID] === 0) {
json_die("failure", "insufficient permissions to view page");
}
}
if ($LoggedUser['CustomForums'][$ForumID] != 1 && $Forums[$ForumID]['MinClassRead'] > $LoggedUser['Class']) {
json_die("failure", "insufficient permissions to view page");
}
$ForumName = display_str($Forums[$ForumID]['Name']);
$JsonSpecificRules = array();
foreach ($Forums[$ForumID]['SpecificRules'] as $ThreadIDs) {
$Thread = get_thread_info($ThreadIDs);
$JsonSpecificRules[] = array(
'threadId' => (int) $ThreadIDs,
'thread' => display_str($Thread['Title'])
);
}
$Pages = Format::get_pages($Page, $Forums[$ForumID]['NumTopics'], TOPICS_PER_PAGE, 9);
if (count($Forum) == 0) {
print
json_encode(
array(
'status' => 'success',
'forumName' => $ForumName,
'threads' => array()
)
);
} else {
// forums_last_read_topics is a record of the last post a user read in a topic, and what page that was on
$DB->query('
SELECT
l.TopicID,
l.PostID,
CEIL(( SELECT COUNT(ID)
FROM forums_posts
WHERE forums_posts.TopicID = l.TopicID
AND forums_posts.ID <= l.PostID) / '.$PerPage.'
) AS Page
FROM forums_last_read_topics AS l
WHERE TopicID IN('.implode(', ', array_keys($Forum)).')
AND UserID=\''.$LoggedUser['ID'].'\'');
// Turns the result set into a multi-dimensional array, with
// forums_last_read_topics.TopicID as the key.
// This is done here so we get the benefit of the caching, and we
// don't have to make a database query for each topic on the page
$LastRead = $DB->to_array('TopicID');
$JsonTopics = array();
foreach ($Forum as $Topic) {
list($TopicID, $Title, $AuthorID, $Locked, $Sticky, $PostCount, $LastID, $LastTime, $LastAuthorID) = array_values($Topic);
// handle read/unread posts - the reason we can't cache the whole page
if ((!$Locked || $Sticky) && ((empty($LastRead[$TopicID]) || $LastRead[$TopicID]['PostID'] < $LastID) && strtotime($LastTime) > $LoggedUser['CatchupTime'])) {
$Read = 'unread';
} else {
$Read = 'read';
}
$UserInfo = Users::user_info($AuthorID);
$AuthorName = $UserInfo['Username'];
$UserInfo = Users::user_info($LastAuthorID);
$LastAuthorName = $UserInfo['Username'];
$JsonTopics[] = array(
'topicId' => (int) $TopicID,
'title' => display_str($Title),
'authorId' => (int) $AuthorID,
'authorName' => $AuthorName,
'locked' => ($Locked == 1),
'sticky' => ($Sticky == 1),
'postCount' => (int) $PostCount,
'lastID' => (($LastID == null) ? 0 : (int) $LastID),
'lastTime' => $LastTime,
'lastAuthorId' => (($LastAuthorID == null) ? 0 : (int) $LastAuthorID),
'lastAuthorName' => (($LastAuthorName == null) ? '' : $LastAuthorName),
'lastReadPage' => (($LastRead[$TopicID]['Page'] == null) ? 0 : (int) $LastRead[$TopicID]['Page']),
'lastReadPostId' => (($LastRead[$TopicID]['PostID'] == null) ? 0 : (int) $LastRead[$TopicID]['PostID']),
'read' => ($Read == 'read')
);
}
print
json_encode(
array(
'status' => 'success',
'response' => array(
'forumName' => $ForumName,
'specificRules' => $JsonSpecificRules,
'currentPage' => (int) $Page,
'pages' => ceil($Forums[$ForumID]['NumTopics'] / TOPICS_PER_PAGE),
'threads' => $JsonTopics
)
)
);
}
?>