<?php
/**
 *
 * Collects and analyzes searches
 *
 * @author Stephen Billard (sbillard)
 * @package plugins
 */
define ('OFFSET_PATH', 4);
require_once(dirname(dirname(dirname(__FILE__))).'/admin-globals.php');
admin_securityChecks(OVERVIEW_RIGHTS, currentRelativeURL(__FILE__));

if (isset($_GET['reset'])) {
	admin_securityChecks(ADMIN_RIGHTS, currentRelativeURL(__FILE__));
	XSRFdefender('search_statistics');
	$sql = 'DELETE FROM '.prefix('plugin_storage').' WHERE `type`="search_statistics"';
	query($sql);
	header('Location: ' . FULLWEBPATH . '/' . ZENFOLDER . '/'. PLUGIN_FOLDER . '/search_statistics/search_analysis.php');
	exit();
}

printAdminHeader(gettext('utilities'),gettext('search analysis'));
echo '</head>';

$sql = 'SELECT * FROM '.prefix('plugin_storage').' WHERE `type`="search_statistics"';
$data = query_full_array($sql);
$ip_maxvalue = $criteria_maxvalue = $criteria_maxvalue_f = $terms_maxvalue = 1;
$results_f = $results = $terms = $sites = array();
$bargraphmaxsize = 400;
$maxiterations = array();
$opChars = array ('(', ')', '&', '|', '!', ',');
foreach ($data as $datum) {
	$element = unserialize($datum['data']);
	$ip = $datum['aux'];
	if (array_key_exists($ip,$sites)) {
		$sites[$ip]++;
		if ($ip_maxvalue < $sites[$ip]) {
			$ip_maxvalue = $sites[$ip];
		}
	} else {
		$sites[$ip] = 1;
	}
	if (is_array($element)) {
		$maxiterations[$element['iteration']] = 1;
		$searchset = $element['data'];
		$type = $element['type'];
		$success = $element['success'];
		$instance = implode(' ',$searchset);
		if ($success) {
			if (array_key_exists($instance, $results)) {
				$results[$instance]++;
				if ($criteria_maxvalue < $results[$instance]) {
					$criteria_maxvalue = $results[$instance];
				}
			} else {
				$results[$instance] = 1;
			}
		} else {
			if (array_key_exists($instance, $results_f)) {
				$results_f[$instance]++;
				if ($criteria_maxvalue_f < $results_f[$instance]) {
					$criteria_maxvalue_f = $results_f[$instance];
				}
			} else {
				$results_f[$instance] = 1;
			}
		}
		foreach ($searchset as $instance) {
			if (!in_array($instance, $opChars)) {
				if (array_key_exists($instance, $terms)) {
					$terms[$instance]++;
					if ($terms_maxvalue < $terms[$instance]) {
						$terms_maxvalue = $terms[$instance];
					}
				} else {
					$terms[$instance] = 1;
				}
			}
		}
	}
}
foreach ($results_f as $key=>$failed) {
	if (array_key_exists($key, $results)) {	// really a successful search
		unset($results_f[$key]);
		$results[$key]++;
	}
}
$maxiterations = count($maxiterations);

$limit_i = getOption('search_statistics_ip_threshold');
$sitelimited = count($sites) > $limit_i;
asort($sites);
arsort($sites);
$sites = array_slice($sites, 0, $limit_i, true);

$limit_t = getOption('search_statistics_terms_threshold');
$termlimited = count($terms) > $limit_t;
asort($terms);
arsort($terms);
$terms = array_slice($terms, 0, $limit_t, true);

$limit_s = getOption('search_statistics_threshold');
$criterialimited = count($results) > $limit_s;
asort($results);
arsort($results);
$results = array_slice($results, 0, $limit_s, true);

$limit_f = getOption('search_statistics_failed_threshold');
$criterialimited_f = count($results_f) > $limit_f;
asort($results_f);
arsort($results_f);
$results_f = array_slice($results_f, 0, $limit_f, true);

?>
<link rel="stylesheet" href="../../admin-statistics.css" type="text/css" media="screen" />
<body>
<?php printLogoAndLinks(); ?>
	<div id="main">
		<?php printTabs(); ?>
		<div id="content">
			<?php zp_apply_filter('admin_note','albums', ''); ?>
			<h1><?php echo (gettext('Search analysis')); ?></h1>
			<?php
			if (empty($results) && empty($results_f)) {
				echo gettext('No search criteria collected.');
			} else {
				if (!empty($results)) {
					?>
					<table class="bordered">
						<tr class="statistic_wrapper">
							<th class="statistic_short_title"><?php
							if ($criterialimited) {
								printf(gettext('Top %u successful search criteria'),$limit_s);
							} else {
								 echo gettext('Successful search criteria');
							}
							?></th>
							<th class="statistic_graphwrap"></th>
						</tr>
						<?php
						foreach ($results as $criteria=>$count) {
							$count = round($count/$maxiterations);
							$barsize = round($count / $criteria_maxvalue * $bargraphmaxsize);
							?>
							<tr class="statistic_wrapper">
								<td class="statistic_short_title" >
									<strong><?php echo $criteria; ?></strong>
								</td>
								<td class="statistic_graphwrap" >
									<div class="statistic_bargraph" style="width: <?php echo $barsize; ?>px"></div>
									<div class="statistic_value"><?php echo $count; ?></div>
								</td>
							</tr>

							<?php
						}
						?>
					</table>
					<?php
				}
				if (!empty($results_f)) {
					?>
					<table class="bordered">
						<tr class="statistic_wrapper">
							<th class="statistic_short_title"><?php
							if ($criterialimited_f) {
								printf(gettext('Top %u failed search criteria'),$limit_f);
							} else {
								 echo gettext('Failed search criteria');
							}
							?></th>
							<th class="statistic_graphwrap"></th>
						</tr>
						<?php
						foreach ($results_f as $criteria=>$count) {
							$count = round($count/$maxiterations);
							$barsize = round($count / $criteria_maxvalue_f * $bargraphmaxsize);
							?>
							<tr class="statistic_wrapper">
								<td class="statistic_short_title" >
									<strong><?php echo $criteria; ?></strong>
								</td>
								<td class="statistic_graphwrap" >
									<div class="statistic_bargraph" style="width: <?php echo $barsize; ?>px"></div>
									<div class="statistic_value"><?php echo $count; ?></div>
								</td>
							</tr>
							<?php
						}
						?>
					</table>
					<?php
				}
				if (!empty($terms)) {
					?>
					<table class="bordered">
						<tr class="statistic_wrapper">
							<th class="statistic_link"><?php
							if ($termlimited) {
								printf(gettext('Top %u search terms used'),$limit_t);
							} else {
								 echo gettext('Search terms used');
							}
							?></th>
							<th class="statistic_graphwrap"></th>
						</tr>
						<?php
						foreach ($terms as $criteria=>$count) {
							$count = round($count/$maxiterations);
							$barsize = round($count / $terms_maxvalue * $bargraphmaxsize);
							?>
							<tr class="statistic_wrapper">
								<td class="statistic_link" >
									<strong><?php echo $criteria; ?></strong>
								</td>
								<td class="statistic_graphwrap" >
									<div class="statistic_bargraph" style="width: <?php echo $barsize; ?>px"></div>
									<div class="statistic_value"><?php echo $count; ?></div>
								</td>
							</tr>
							<?php
						}
						?>
					</table>
					<?php
				}
				if (!empty($sites)) {
					?>
					<table class="bordered">
						<tr class="statistic_wrapper">
							<th class="statistic_link"><?php
							if ($sitelimited) {
								printf(gettext('Top %u Search IPs'),$limit_i);
							} else {
								echo gettext('Search IPs');
							}
							?></th>
							<th class="statistic_graphwrap"></th>
						</tr>
						<?php
						foreach ($sites as $ip=>$count) {
							$count = round($count/$maxiterations);
							$barsize = round($count / $ip_maxvalue * $bargraphmaxsize);
							?>
							<tr class="statistic_wrapper">
								<td class="statistic_link" >
									<strong><?php echo $ip; ?></strong>
								</td>
								<td class="statistic_graphwrap" >
									<div class="statistic_bargraph" style="width: <?php echo $barsize; ?>px"></div>
									<div class="statistic_value"><?php echo $count; ?></div>
								</td>
							</tr>
							<?php
						}
						?>
					</table>
					<?php
				}
				if (zp_loggedin(ADMIN_RIGHTS)) {
					?>
					<p class="buttons">
						<a href="?reset&amp;XSRFToken=<?php echo getXSRFToken('search_statistics'); ?>"><?php echo gettext('reset'); ?></a>
					</p>
					<br clear="all" />
					<p>
						<a href="<?php echo WEBPATH.'/'.ZENFOLDER?>/admin-options.php?tab=plugin&amp;show-search_statistics#search_statistics" ><?php echo gettext('Change <em>Threshold</em> values')?></a>
					</p>
					<br clear="all" />
					<?php
				} else {
					?>
					<br clear="all" />
					<?php
				}
			}
		?>
		</div>
	</div>
<?php printAdminFooter(); ?>
</body>
<?php
echo "</html>";
?>