* @package be.bastelstu.chat * @subpackage util */ final class ChatUtil { /** * Matches a time-interval with modifiers. * Each part may be optionally separated by a comma * * @see \chat\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.chat'; /** * Which user-storage-keys need serialization. * The value should always be true. * * @var array */ private static $serialize = array('color' => true, 'suspensions' => true); /** * Cached packageID of Tims Chat. * * @var integer */ private static $packageID = null; /** * Fetches the userIDs of died users. * * @return array */ public static function getDiedUsers() { if (self::nodePushRunning()) { $time = TIME_NOW - 120; } 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 = ? WHERE r.field = ? AND r.fieldValue IS NOT NULL AND ( a.fieldValue < ? OR a.fieldValue IS NULL )"; $stmt = WCF::getDB()->prepareStatement($sql); $stmt->execute(array('lastActivity', 'roomID', $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::$packageID = PackageCache::getInstance()->getPackageID(self::PACKAGE_IDENTIFIER); } return self::$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++) { $result .= ''.\wcf\util\StringUtil::encodeHTML($string[$i]).''; } return $result; } /** * Checks whether nodePush is running. * * @return boolean */ public static function nodePushRunning() { if (!CHAT_SOCKET_IO_PATH) return false; if (!file_exists(CHAT_DIR.'acp/be.bastelstu.chat.nodePush/data.sock')) return false; if (!is_writable(CHAT_DIR.'acp/be.bastelstu.chat.nodePush/data.sock')) return false; return true; } /** * 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(); // load storage $ush->loadStorage(array($user->userID)); $data = $ush->getStorage(array($user->userID), $field); if ($data[$user->userID] === null) { switch ($field) { case 'color': $data[$user->userID] = array(1 => self::getRandomNumber(), 2 => self::getRandomNumber() * 0xFFFF); break; } if ($data[$user->userID] !== null) 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, $max = \wcf\util\StringUtil::length($string); $i < $max; $i += $length) { $result[] = \wcf\util\StringUtil::substring($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 array $data * @param \wcf\data\user\User $user */ public static function writeUserData(array $data, \wcf\data\user\User $user = null) { if ($user === null) $user = WCF::getUser(); $ush = UserStorageHandler::getInstance(); foreach ($data as $key => $value) { $ush->update($user->userID, $key, (isset(static::$serialize[$key])) ? serialize($value) : $value); } } /** * Disables the constructor. */ private function __construct() { } }