<?
authorize();
if(!check_perms("site_moderate_forums")) {
	error(404);
}

$ThreadID = $_GET['threadid'];
$PollOption = $_GET['vote'];

if(is_number($ThreadID) && is_number($PollOption)) {
	$DB->query("SELECT ForumID FROM forums_topics WHERE ID = $ThreadID");
	list($ForumID) = $DB->next_record();
	if(!in_array($ForumID, $ForumsRevealVoters)) {
		error(403);
	}

	$DB->query("SELECT Answers FROM forums_polls WHERE TopicID = ".$ThreadID);
	if($DB->record_count() < 1) {
		error(404);
	}

	list($Answers) = $DB->next_record(MYSQLI_NUM, false);
	$Answers = unserialize($Answers);
	unset($Answers[$PollOption]);
	$Answers = serialize($Answers);

	$DB->query("UPDATE forums_polls SET Answers = '".db_string($Answers)."' WHERE TopicID = ".$ThreadID);
	$DB->query("DELETE FROM forums_polls_votes WHERE Vote = ".$PollOption." AND TopicID = ".$ThreadID);

	$Cache->delete_value('polls_'.$ThreadID);
	header("Location: forums.php?action=viewthread&threadid=".$ThreadID);
	
} else {
	error(404);
}