id(); * @internal */ class Visitor { private $id; private $geoposition; private $current_session; /** * New instances should be created with a string ip address * * @param string $ip * @param string $user_agent */ public function __construct(string $ip, string $user_agent) { $this->id = $this->fetch_visitor_id_by_hash($this->calculate_hash($ip, $user_agent)); $this->geoposition = new Geoposition($ip); $this->current_session = $this->fetch_current_session(); } public function geoposition() : Geoposition { return $this->geoposition; } public function has_recorded_session() : bool { return \is_object($this->current_session); } public function most_recent_session_id() : ?int { $session_id = \IAWPSCOPED\iawp_intify($this->current_session->session_id); if ($this->has_recorded_session() && \is_int($session_id)) { return $session_id; } else { return null; } } public function most_recent_initial_view_id() : ?int { $initial_view_id = \IAWPSCOPED\iawp_intify($this->current_session->initial_view_id); if ($this->has_recorded_session() && \is_int($initial_view_id)) { return $initial_view_id; } else { return null; } } public function most_recent_final_view_id() : ?int { $final_view_id = \IAWPSCOPED\iawp_intify($this->current_session->final_view_id); if ($this->has_recorded_session() && \is_int($final_view_id)) { return $final_view_id; } else { return null; } } public function most_recent_view_id() : ?int { return $this->most_recent_final_view_id() ?? $this->most_recent_initial_view_id(); } /** * Return the database id for a visitor * * @return string */ public function id() : string { return $this->id; } public function is_first_session() : bool { $sessions_table = Query::get_table_name(Query::SESSIONS); return Illuminate_Builder::new()->select('session_id')->from($sessions_table, 'sessions')->where('visitor_id', '=', $this->id)->doesntExist(); } /** * @param string $ip * @param string $user_agent * @return string */ private function calculate_hash(string $ip, string $user_agent) : string { $salt = Salt::visitor_token_salt(); $result = $salt . $ip . $user_agent; return \md5($result); } private function fetch_current_session() { $sessions_table = Query::get_table_name(Query::SESSIONS); $session = Illuminate_Builder::new()->from($sessions_table, 'sessions')->selectRaw('IFNULL(ended_at, created_at) AS latest_view_at')->selectRaw('sessions.*')->where('visitor_id', '=', $this->id)->havingRaw('latest_view_at > DATE_SUB(UTC_TIMESTAMP(), INTERVAL 30 MINUTE)')->orderBy('latest_view_at', 'DESC')->first(); return $session; } public static function fetch_visitor_id_by_hash(string $hash) : int { $visitors_table = Query::get_table_name(Query::VISITORS); Illuminate_Builder::new()->from($visitors_table)->insertOrIgnore([['hash' => $hash]]); return Illuminate_Builder::new()->from($visitors_table)->where('hash', '=', $hash)->value('visitor_id'); } public static function fetch_current_visitor() : self { return new \IAWP\Models\Visitor(Request::ip(), Request::user_agent()); } }