Gazelle/sections/forums/poll_vote.php

<?

if(!isset($_POST['topicid']) || !is_number($_POST['topicid'])) { error(0,true); }
$TopicID = $_POST['topicid'];

if (!empty($_POST['large'])) {
	$Size = 750;
} else {
	$Size = 140;
}

if(!$ThreadInfo = $Cache->get_value('thread_'.$TopicID.'_info')) {
	$DB->query("SELECT
		t.Title,
		t.ForumID,
		t.IsLocked,
		t.IsSticky,
		COUNT(fp.id) AS Posts,
		t.LastPostAuthorID,
		ISNULL(p.TopicID) AS NoPoll
		FROM forums_topics AS t
		JOIN forums_posts AS fp ON fp.TopicID = t.ID
		LEFT JOIN forums_polls AS p ON p.TopicID=t.ID
		WHERE t.ID = '$TopicID'
		GROUP BY fp.TopicID");
	if($DB->record_count()==0) { die(); }
	$ThreadInfo = $DB->next_record(MYSQLI_ASSOC);
	if (!$ThreadInfo['IsLocked'] || $ThreadInfo['IsSticky']) {
		$Cache->cache_value('thread_'.$TopicID.'_info', $ThreadInfo, 0);
	}
}
$ForumID = $ThreadInfo['ForumID'];

if (!list($Question,$Answers,$Votes,$Featured,$Closed) = $Cache->get_value('polls_'.$TopicID)) {
	$DB->query("SELECT Question, Answers, Featured, Closed FROM forums_polls WHERE TopicID='".$TopicID."'");
	list($Question, $Answers, $Featured, $Closed) = $DB->next_record(MYSQLI_NUM, array(1));
	$Answers = unserialize($Answers);
	$DB->query("SELECT Vote, COUNT(UserID) FROM forums_polls_votes WHERE TopicID='$TopicID' AND Vote <> '0' GROUP BY Vote");
	$VoteArray = $DB->to_array(false, MYSQLI_NUM);
	
	$Votes = array();
	foreach ($VoteArray as $VoteSet) {
		list($Key,$Value) = $VoteSet; 
		$Votes[$Key] = $Value;
	}
	
	for ($i = 1, $il = count($Answers); $i <= $il; ++$i) {
		if (!isset($Votes[$i])) {
			$Votes[$i] = 0;
		}
	}
	$Cache->cache_value('polls_'.$TopicID, array($Question,$Answers,$Votes,$Featured,$Closed), 0);
}


if ($Closed) {
	error(403,true);
}

if (!empty($Votes)) {
	$TotalVotes = array_sum($Votes);
	$MaxVotes = max($Votes);
} else {
	$TotalVotes = 0;
	$MaxVotes = 0;
}

if (!isset($_POST['vote']) || !is_number($_POST['vote'])) {
?>
<span class="error">Please select an option.</span><br />
<form id="polls">
	<input type="hidden" name="action" value="poll"/>
	<input type="hidden" name="auth" value="<?=$LoggedUser['AuthKey']?>" />
	<input type="hidden" name="large" value="<?=display_str($_POST['large'])?>"/>
	<input type="hidden" name="topicid" value="<?=$TopicID?>" />
<? for ($i = 1, $il = count($Answers); $i <= $il; $i++) { ?>
	<input type="radio" name="vote" id="answer_<?=$i?>" value="<?=$i?>" />
	<label for="answer_<?=$i?>"><?=display_str($Answers[$i])?></label><br />
<? } ?>
	<br /><input type="radio" name="vote" id="answer_0" value="0" /> <label for="answer_0">Blank - Show the results!</label><br /><br />
	<input type="button" onclick="ajax.post('index.php','polls',function(response){$('#poll_results').raw().innerHTML = response});" value="Vote">
</form>
<?
} else {
	authorize();
	$Vote = $_POST['vote'];
	if (!isset($Answers[$Vote]) && $Vote != 0) { error(0,true); }

	//Add our vote
	$DB->query('INSERT IGNORE INTO forums_polls_votes (TopicID, UserID, Vote) VALUES ('.$TopicID.','.$LoggedUser['ID'].','.$Vote.')');
	if ($DB->affected_rows() == 1 && $Vote != 0) {
		$Cache->begin_transaction('polls_'.$TopicID);
		$Cache->update_row(2, array($Vote => '+1'));
		$Cache->commit_transaction(0);
		$Votes[$Vote]++;
		$TotalVotes++;
		$MaxVotes++;
	}

	if ($Vote != 0) {
		$Answers[$Vote] = '=> '.$Answers[$Vote];
	}

?>
		<ul class="poll nobullet">
<?
		if($ForumID != STAFF_FORUM) {
			for ($i = 1, $il = count($Answers); $i <= $il; $i++) {
				if (!empty($Votes[$i]) && $TotalVotes > 0) {
					$Ratio = $Votes[$i]/$MaxVotes;
					$Percent = $Votes[$i]/$TotalVotes;
				} else {
					$Ratio=0;
					$Percent=0;
				} 
?>
					<li><?=display_str($Answers[$i])?> (<?=number_format($Percent*100,2)?>%)</li>
					<li class="graph">
						<span class="left_poll"></span>
						<span class="center_poll" style="width:<?=round($Ratio*$Size)?>px;"></span>
						<span class="right_poll"></span>
					</li>
<?			}
		} else {
			//Staff forum, output voters, not percentages
			$DB->query("SELECT GROUP_CONCAT(um.Username SEPARATOR ', '), 
							fpv.Vote 
						FROM users_main AS um 
							JOIN forums_polls_votes AS fpv ON um.ID = fpv.UserID
						WHERE TopicID = ".$TopicID."
						GROUP BY fpv.Vote");
			
			$StaffVotes = $DB->to_array();
			foreach($StaffVotes as $StaffVote) {
				list($StaffString, $StaffVoted) = $StaffVote;
?>
				<li><a href="forums.php?action=change_vote&amp;threadid=<?=$TopicID?>&amp;auth=<?=$LoggedUser['AuthKey']?>&amp;vote=<?=(int) $StaffVoted?>"><?=display_str(empty($Answers[$StaffVoted]) ? "Blank" : $Answers[$StaffVoted])?></a> - <?=$StaffString?></li>
<?
			}
		}
?>
		</ul>
		<br /><strong>Votes:</strong> <?=number_format($TotalVotes)?>
<?
}