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<?php
class Session
{
const VISITOR_SESSION_ID = -1;
public static $DATA_COOKIE_NAME;
public static $AUTOCONNECT_COOKIE_NAME;
private static $request;
private static $response;
public static function __static()
{
$config = SessionsConfig::load();
self::$DATA_COOKIE_NAME = $config->get_cookie_name() . '_data';
self::$AUTOCONNECT_COOKIE_NAME = $config->get_cookie_name() . '_autoconnect';
self::$request = AppContext::get_request();
self::$response = AppContext::get_response();
}
public static function gc()
{
SessionData::gc();
}
public static function start()
{
try
{
if (self::$request->has_cookieparameter(self::$DATA_COOKIE_NAME))
{
return self::connect();
}
if (self::$request->has_cookieparameter(self::$AUTOCONNECT_COOKIE_NAME))
{
return self::autoconnect();
}
return self::create_visitor();
}
catch (UnexpectedValueException $ex)
{
return self::create_visitor();
}
}
public static function create($user_id, $autoconnect = false)
{
if ($user_id == Session::VISITOR_SESSION_ID)
{
return self::create_visitor();
}
else
{
$data = SessionData::create_from_user_id($user_id);
if ($autoconnect)
{
AutoConnectData::create_cookie($user_id);
}
return $data;
}
}
public static function delete(SessionData $session)
{
$session->delete();
self::$response->delete_cookie(self::$AUTOCONNECT_COOKIE_NAME);
}
private static function connect()
{
try
{
return SessionData::from_cookie(self::$request->get_cookie(self::$DATA_COOKIE_NAME));
}
catch (SessionNotFoundException $ex)
{
if (self::$request->has_cookieparameter(self::$AUTOCONNECT_COOKIE_NAME))
{
return self::autoconnect();
}
return self::create_visitor();
}
}
private static function autoconnect()
{
$cookie = self::$request->get_cookie(self::$AUTOCONNECT_COOKIE_NAME);
$user_id = AutoConnectData::get_user_id_from_cookie($cookie);
if ($user_id != Session::VISITOR_SESSION_ID)
{
return SessionData::create_from_user_id($user_id);
}
else
{
self::$response->delete_cookie(self::$AUTOCONNECT_COOKIE_NAME);
return self::create_visitor();
}
}
private static function create_visitor()
{
return SessionData::create_visitor();
}
}
?>