if (!check_perms('torrents_edit')) {
error(403);
}
$GroupID = $_POST['groupid'];
$OldGroupID = $GroupID;
$NewGroupID = db_string($_POST['targetgroupid']);
if (!$GroupID || !is_number($GroupID)) {
error(404);
}
if (!$NewGroupID || !is_number($NewGroupID)) {
error(404);
}
if ($NewGroupID == $GroupID) {
error('Old group ID is the same as new group ID!');
}
$DB->query("
SELECT CategoryID, Name
FROM torrents_group
WHERE ID = '$NewGroupID'");
if (!$DB->has_results()) {
error('Target group does not exist.');
}
list($CategoryID, $NewName) = $DB->next_record();
if ($Categories[$CategoryID - 1] != 'Music') {
error('Only music groups can be merged.');
}
$DB->query("
SELECT Name
FROM torrents_group
WHERE ID = $GroupID");
list($Name) = $DB->next_record();
// Everything is legit, let's just confim they're not retarded
if (empty($_POST['confirm'])) {
$Artists = Artists::get_artists(array($GroupID, $NewGroupID));
View::show_header();
?>
View::show_footer();
} else {
authorize();
// Votes ninjutsu. This is so annoyingly complicated.
// 1. Get a list of everybody who voted on the old group and clear their cache keys
$DB->query("
SELECT UserID
FROM users_votes
WHERE GroupID = '$GroupID'");
while (list($UserID) = $DB->next_record()) {
$Cache->delete_value("voted_albums_$UserID");
}
// 2. Update the existing votes where possible, clear out the duplicates left by key
// conflicts, and update the torrents_votes table
$DB->query("
UPDATE IGNORE users_votes
SET GroupID = '$NewGroupID'
WHERE GroupID = '$GroupID'");
$DB->query("
DELETE FROM users_votes
WHERE GroupID = '$GroupID'");
$DB->query("
INSERT INTO torrents_votes (GroupID, Ups, Total, Score)
SELECT $NewGroupID, UpVotes, TotalVotes, VoteScore
FROM (
SELECT
IFNULL(SUM(IF(Type = 'Up', 1, 0)), 0) As UpVotes,
COUNT(1) AS TotalVotes,
binomial_ci(IFNULL(SUM(IF(Type = 'Up', 1, 0)), 0), COUNT(1)) AS VoteScore
FROM users_votes
WHERE GroupID = $NewGroupID
GROUP BY GroupID
) AS a
ON DUPLICATE KEY UPDATE
Ups = a.UpVotes,
Total = a.TotalVotes,
Score = a.VoteScore;");
// 3. Clear the votes_pairs keys!
$DB->query("
SELECT v2.GroupID
FROM users_votes AS v1
INNER JOIN users_votes AS v2 USING (UserID)
WHERE (v1.Type = 'Up' OR v2.Type = 'Up')
AND (v1.GroupID IN($GroupID, $NewGroupID))
AND (v2.GroupID NOT IN($GroupID, $NewGroupID));");
while (list($CacheGroupID) = $DB->next_record()) {
$Cache->delete_value("vote_pairs_$CacheGroupID");
}
// 4. Clear the new groups vote keys
$Cache->delete_value("votes_$NewGroupID");
$DB->query("
UPDATE torrents
SET GroupID = '$NewGroupID'
WHERE GroupID = '$GroupID'");
$DB->query("
UPDATE wiki_torrents
SET PageID = '$NewGroupID'
WHERE PageID = '$GroupID'");
$DB->query("
UPDATE torrents_comments
SET GroupID = '$NewGroupID'
WHERE GroupID = '$GroupID'");
Torrents::delete_group($GroupID);
Torrents::write_group_log($NewGroupID, 0, $LoggedUser['ID'], "Merged Group $GroupID ($Name) to $NewGroupID ($NewName)", 0);
$DB->query("
UPDATE group_log
SET GroupID = $NewGroupID
WHERE GroupID = $GroupID");
$GroupID = $NewGroupID;
//Collages
$DB->query("
SELECT CollageID
FROM collages_torrents
WHERE GroupID = '$OldGroupID'"); // Select all collages that contain edited group
while (list($CollageID) = $DB->next_record()) {
$DB->query("
UPDATE IGNORE collages_torrents
SET GroupID = '$NewGroupID'
WHERE GroupID = '$OldGroupID'
AND CollageID = '$CollageID'"); // Change collage group ID to new ID
$DB->query("
DELETE FROM collages_torrents
WHERE GroupID = '$OldGroupID'
AND CollageID = '$CollageID'");
$Cache->delete_value("collage_$CollageID");
}
$Cache->delete_value("torrent_collages_$NewGroupID");
$Cache->delete_value("torrent_collages_personal_$NewGroupID");
// Requests
$DB->query("
SELECT ID
FROM requests
WHERE GroupID = '$OldGroupID'");
$Requests = $DB->collect('ID');
$DB->query("
UPDATE requests
SET GroupID = 'NewGroupID'
WHERE GroupID = '$OldGroupID'");
foreach ($Requests as $RequestID) {
$Cache->delete_value("request_$RequestID");
}
$DB->query("
SELECT ID
FROM torrents
WHERE GroupID = '$OldGroupID'");
while (list($TorrentID) = $DB->next_record()) {
$Cache->delete_value("torrent_download_$TorrentID");
}
$Cache->delete_value("torrents_details_$GroupID");
$Cache->delete_value("torrent_comments_{$GroupID}_catalogue_0");
$Cache->delete_value("torrent_comments_$GroupID");
$Cache->delete_value("groups_artists_$GroupID");
Torrents::update_hash($GroupID);
header("Location: torrents.php?id=" . $GroupID);
}
?>