<?php

namespace Objects;

class User extends ApiObject {

  private $sql;
  private $configuration;
  private $loggedIn;
  private $session;
  private $uid;
  private $username;
  private $language;

  public function __construct($configuration) {
    $this->configuration = $configuration;
    $this->setLangauge(Language::DEFAULT_LANGUAGE());
    $this->reset();
    $this->connectDb();
    $this->parseCookies();
  }

  public function __destruct() {
    if($this->sql && $this->sql->isConnected()) {
      $this->sql->close();
    }
  }

  private function connectDb() {
    $databaseConf = $this->configuration->getDatabase();
    if($databaseConf) {
      $this->sql = \Driver\SQL::createConnection($databaseConf);
    }
  }

  public function getId() { return $this->uid; }
  public function isLoggedIn() { return $this->loggedIn; }
  public function getUsername() { return $this->username; }
  public function getSQL() { return $this->sql; }
  public function getLanguage() { return $this->language; }
  public function setLangauge($language) { $this->language = $language; $language->load(); }
  public function getSession() { return $this->session; }
  public function getConfiguration() { return $this->configuration; }

  public function __debugInfo() {
    $debugInfo = array(
      'loggedIn' => $this->loggedIn,
      'language' => $this->language->getName(),
    );

    if($this->loggedIn) {
      $debugInfo['uid'] = $this->uid;
      $debugInfo['username'] = $this->username;
    }

    return $debugInfo;
  }

  public function jsonSerialize() {
    return array(
      'uid' => $this->uid,
      'name' => $this->username,
      'language' => $this->language,
      'session' => $this->session,
    );
  }

  private function reset() {
    $this->uid = 0;
    $this->username = '';
    $this->loggedIn = false;
    $this->session = false;
  }

  public function logout() {
    if($this->loggedIn) {
      $this->session->destroy();
      $this->reset();
    }
  }

  public function updateLanguage($lang) {
    $request = new CSetLanguage($this);
    return $request->execute(array("langCode" => $lang));
  }

  public function sendCookies() {
    if($this->loggedIn) {
      $this->session->sendCookie();
    }

    $this->language->sendCookie();
  }

  public function readData($userId, $sessionId, $sessionUpdate = true) {
    $query = 'SELECT User.name as userName, Language.uid as langId, Language.code as langCode
              FROM User
              INNER JOIN Session ON User.uid=Session.uidUser
              LEFT JOIN Language ON User.uidLanguage=Language.uid
              WHERE User.uid=? AND Session.uid=? AND Session.expires>now()';
    $request = new CExecuteSelect($this);
    $success = $request->execute(array('query' => $query, $userId, $sessionId));

    if($success) {
      if(count($request->getResult()['rows']) === 0) {
        $success = false;
      } else {
        $row = $request->getResult()['rows'][0];
        $this->username = $row['userName'];
        $this->uid = $userId;
        $this->session = new CSession($this, $sessionId);
        if($sessionUpdate) $this->session->update();
        $this->loggedIn = true;

        if(!is_null($row['langId'])) {
          $this->setLangauge(CLanguage::newInstance($row['langId'], $row['langCode']));
        }
      }
    }

    return $success;
  }

  private function parseCookies() {
    if(isset($_COOKIE['session'])
      && is_string($_COOKIE['session'])
      && !empty($_COOKIE['session'])
      && ($jwt = $this->configuration->getJWT())) {
      try {
        $token = $_COOKIE['session'];
        $decoded = (array)External\JWT::decode($token, $jwt->getKey());
        if(!is_null($decoded)) {
          $userId = (isset($decoded['userId']) ? $decoded['userId'] : NULL);
          $sessionId = (isset($decoded['sessionId']) ? $decoded['sessionId'] : NULL);
          if(!is_null($userId) && !is_null($sessionId)) {
            $this->readData($userId, $sessionId);
          }
        }
      } catch(Exception $e) {
        echo $e;
      }
    }

    if(isset($_GET['lang']) && is_string($_GET["lang"]) && !empty($_GET["lang"])) {
      $this->updateLanguage($_GET['lang']);
    } else if(isset($_COOKIE['lang']) && is_string($_COOKIE["lang"]) && !empty($_COOKIE["lang"])) {
      $this->updateLanguage($_COOKIE['lang']);
    }
  }

  public function createSession($userId) {
    $this->uid = $userId;
    $this->session = new Session($this);
    $this->loggedIn = $this->session->insert();
    return $this->loggedIn;
  }

  public function authorize($apiKey) {
    if($this->loggedIn)
      return true;

    $query = 'SELECT ApiKey.uidUser as uid, User.name as username, Language.uid as langId, Language.code as langCode
              FROM ApiKey, User
              LEFT JOIN Language ON User.uidLanguage=Language.uid
              WHERE api_key=? AND valid_until > now() AND User.uid = ApiKey.uidUser';

    $request = new CExecuteSelect($this);
    $success = $request->execute(array('query' => $query, $apiKey));

    if($success) {
      if(count($request->getResult()['rows']) === 0) {
        $success = false;
      } else {
        $row = $request->getResult()['rows'][0];
        $this->uid = $row['uid'];
        $this->username = $row['username'];

        if(!is_null($row['langId'])) {
          $this->setLangauge(Language::newInstance($row['langId'], $row['langCode']));
        }
      }
    }

    return $success;
  }
}

?>