* @package be.bastelstu.wcf.chat
* @subpackage util
*/
final class ChatUtil {
/**
* Matches a time-interval with modifiers.
* Each part may be optionally separated by a comma
*
* @see \wcf\util\ChatUtil::timeModifier()
*/
const TIME_MODIFIER_REGEX = '((?:[0-9]+[s|h|d|w|m|y|S|H|D|W|M|Y]?,?)+)';
/**
* Package identifier of Tims Chat.
*
* @var string
*/
const PACKAGE_IDENTIFIER = 'be.bastelstu.wcf.chat';
public static $serialize = array('color' => true);
/**
* Cached packageID of Tims Chat.
*
* @var integer
*/
private static $packageID = null;
/**
* Fetches the userIDs of died users.
*
* @return array
*/
public static function getDiedUsers() {
$packageID = \wcf\util\ChatUtil::getPackageID();
if (CHAT_SOCKET_IO_PATH && file_exists(WCF_DIR.'acp/be.bastelstu.wcf.chat.serverPush/data.sock')) {
$sql = "SELECT
time
FROM
wcf".WCF_N."_chat_message
ORDER BY
messageID DESC";
$stmt = WCF::getDB()->prepareStatement($sql, 1);
$stmt->execute();
$time = $stmt->fetchColumn();
}
else {
$time = TIME_NOW;
}
$sql = "SELECT
r.userID, r.fieldValue AS roomID
FROM
wcf".WCF_N."_user_storage r
LEFT JOIN
wcf".WCF_N."_user_storage a
ON a.userID = r.userID
AND a.field = ?
AND a.packageID = ?
WHERE
r.field = ?
AND r.packageID = ?
AND r.fieldValue IS NOT NULL
AND (
a.fieldValue < ?
OR a.fieldValue IS NULL
)";
$stmt = WCF::getDB()->prepareStatement($sql);
$stmt->execute(array('lastActivity', $packageID, 'roomID', $packageID, $time - 30));
$users = array();
while ($users[] = $stmt->fetchArray());
return $users;
}
/**
* Returns the packageID of Tims Chat.
*/
public static function getPackageID() {
if (self::$packageID === null) {
self::$packageID = PackageDependencyHandler::getInstance()->getPackageID(self::PACKAGE_IDENTIFIER);
}
return self::$packageID;
}
/**
* Returns a random number.
*
* @return integer
*/
public static function /* int */ getRandomNumber() {
return 4; // chosen by a fair dice roll
// guaranteed to be random
}
/**
* Creates a gradient out of two colors represented by an integer.
* The first byte is red, the second byte is green, the third one is blue.
* The numbers can be easily expressed in hexadecimal notation: 0xFF0000 being red.
*
* @param string $string
* @param integer $start
* @param integer $end
* @return string
*/
public static function gradient($string, $start, $end) {
$string = self::str_split($string);
if (count($string) === 0) return '';
$r = (int) ((($start >> 16 & 255) - ($end >> 16 & 255)) / (count($string) - 1));
$g = (int) ((($start >> 8 & 255) - ($end >> 8 & 255)) / (count($string) - 1));
$b = (int) ((($start & 255) - ($end & 255)) / (count($string) - 1));
$result = '';
for ($i = 0, $max = count($string); $i < $max; $i++) {
$result .= ''.StringUtil::encodeHTML($string[$i]).'';
}
return $result;
}
/**
* Reads user data.
*
* @param string $field
* @param \wcf\data\user\User $user
* @return mixed
*/
public static function readUserData($field, \wcf\data\user\User $user = null) {
if ($user === null) $user = WCF::getUser();
$ush = UserStorageHandler::getInstance();
$packageID = self::getPackageID();
// load storage
$ush->loadStorage(array($user->userID), $packageID);
$data = $ush->getStorage(array($user->userID), $field, $packageID);
if ($data[$user->userID] === null) {
switch ($field) {
case 'color':
$data[$user->userID] = array(1 => self::getRandomNumber(), 2 => self::getRandomNumber() * 0xFFFF);
break;
}
static::writeUserData(array($field => $data[$user->userID]));
return $data[$user->userID];
}
if (isset(static::$serialize[$field])) return unserialize($data[$user->userID]);
else return $data[$user->userID];
}
/**
* Splits a string into smaller chunks.
* UTF-8 safe version of str_split().
*
* @param string $string
* @param integer $length
* @return array
*/
public static function str_split($string, $length = 1) {
$result = array();
for ($i = 0, $max = StringUtil::length($string); $i < $max; $i += $length) {
$result[] = StringUtil::substring($string, $i, $length);
}
return $result;
}
/**
* Creates an interval out of a string with modifiers.
* Modifiers may be mixed. Valid modifiers are: _s_econd, _h_our, _d_ay, _w_week, _m_onth, _y_ear
* '2' -> 2 minutes
* '2h' -> 2 hours
* '1y12m2w3d12h' -> 1 year, 12 months, 2 weeks, 3 days, 12 hours
*
* @param string $time
* @return integer
*/
public static function timeModifier($time) {
$regex = new \wcf\system\Regex('([0-9]+[s|h|d|w|m|y]?)', \wcf\system\Regex::CASE_INSENSITIVE);
if (!$regex->match($time, true)) return 0;
$matches = $regex->getMatches();
$result = 0;
foreach ($matches[1] as $time) {
// 60 seconds a minute
$multiplier = 60;
$modifier = substr($time, -1);
switch ($modifier) {
case 'y':
case 'Y':
// twelve months a year
$multiplier *= 12;
case 'm':
case 'M':
// about 4.3 weeks per month
$multiplier *= 4.34812141;
case 'w':
case 'W':
// seven days a weeks
$multiplier *= 7;
case 'd':
case 'D':
// 24 hours a day
$multiplier *= 24;
case 'h':
case 'H':
// 60 minutes an hour
$multiplier *= 60;
$time = substr($time, 0, -1);
break;
case 's':
case 'S':
// 60 seconds per minute
$multiplier /= 60;
$time = substr($time, 0, -1);
}
$result += $time * $multiplier;
}
return (int) round($result, 0);
}
/**
* Writes user data
*
* @param \wcf\data\user\User $user
* @param array $data
*/
public static function writeUserData(array $data, \wcf\data\user\User $user = null) {
if ($user === null) $user = WCF::getUser();
$ush = UserStorageHandler::getInstance();
$packageID = self::getPackageID();
foreach($data as $key => $value) {
$ush->update($user->userID, $key, (isset(static::$serialize[$key])) ? serialize($value) : $value, $packageID);
}
}
private function __construct() { }
}