<?php

if (mt_rand(1, 10) === 1) {
	// One year of event log
	Database::exec("DELETE FROM eventlog WHERE (UNIX_TIMESTAMP() - 86400 * 365) > dateline");
	// Keep at least 20 events or 7 days worth of samples (whichever is more)
	$types = Database::simpleQuery("SELECT type, Count(*) AS num, Min(dateline) as oldest
			FROM `notification_sample` GROUP BY type");
	$cutoff = time() - 86400 * 7;
	$maxCutoff = time() - 86400 * 365; // But don't keep anything for more than a year
	foreach ($types as $type) {
		if ($type['num'] > 20 && $type['oldest'] < $cutoff) {
			// This type has more than 30 and the oldest one is older than 7 days
			// find out which one takes priority
			$thisCutoff = $cutoff;
			$find = Database::queryFirst("SELECT dateline FROM notification_sample
					WHERE type = :type AND dateline
					ORDER BY dateline DESC
					LIMIT 29, 1",
				['type' => $type['type']]);
			// The 30th entry is older than 7 days? Bump the cutoff dateline back to this date,
			// so we keep at least 20 entries
			if ($find !== false && $find['dateline'] < $thisCutoff) {
				$thisCutoff = $find['dateline'];
			}
			Database::exec("DELETE FROM notification_sample
					WHERE type = :type AND dateline < :dateline",
				['type' => $type['type'], 'dateline' => max($thisCutoff, $maxCutoff)]);
		}
	}
}

// Add missing/virtual columns to sample data
$todo = Database::simpleQuery("SELECT sampleid, data FROM notification_sample WHERE extended = 0 LIMIT 10");
foreach ($todo as $sample) {
	$data = json_decode($sample['data'], true);
	// First, add all the machine columns
	if (isset($data['machineuuid'])) {
		$row = Database::queryFirst("SELECT " . implode(',', FilterRuleProcessor::MACHINE_COLUMNS)
			. " FROM machine WHERE machineuuid = :uuid", ['uuid' => $data['machineuuid']]);
	} elseif (isset($data['clientip'])) {
		$row = Database::queryFirst("SELECT " . implode(',', FilterRuleProcessor::MACHINE_COLUMNS)
			. " FROM machine WHERE clientip = :ip ORDER BY lastseen DESC LIMIT 1", ['ip' => $data['clientip']]);
	} else {
		$row = false;
	}
	if ($row !== false) {
		$data += $row;
	}
	// Add virtual statistics columns
	if (isset($data['machineuuid']) && Module::isAvailable('statistics')) {
		foreach (FilterRuleProcessor::HW_QUERIES as $key => $elem) {
			if (isset($data[$key]))
				continue; // Already present...
			$q = new HardwareQuery($elem[0], $data['machineuuid']);
			$q->addColumn($elem[2], $elem[1]);
			$res = $q->query();
			if ($res !== false) {
				$row = $res->fetch();
				if ($row !== false && $row[$elem[1]] !== null) {
					$data[$key] = $row[$elem[1]];
				}
			}
		}
	}
	// Finally, update entry
	Database::exec("UPDATE notification_sample SET extended = 1, data = :data WHERE sampleid = :id",
			['id' => $sample['sampleid'], 'data' => json_encode($data)]);
}