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//------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------//

/**
 *
 * @param mixed $var
 * @param string $userclass
 * @param mixed $peer
 * @param boolean $debug
 * @return boolean
 */
function check_class($var, $userclass = USERCLASS, $peer = FALSE, $debug = FALSE)
{
    global $tp,$pref;
    if($var == e_LANGUAGE){
        return TRUE;
    }

    if (is_numeric($var) && !$var) return TRUE;     // Accept numeric class zero - 'PUBLIC'

    if (!$var || $var == '')
    {   // ....but an empty string or NULL variable is not valid
        return FALSE;
    }

    if(strpos($var, ',') !== FALSE)
    {
        $lans = explode(',', e_LANLIST);
        $varList = explode(',', $var);
        rsort($varList); // check the language first.(ie. numbers come last)
        foreach($varList as $v)
        {
            if (in_array($v,$lans) && strpos($v, e_LANGUAGE) === FALSE) {
                return FALSE;
            }

            if(check_class($v, $userclass, $debug)) {
                return TRUE;
            }
        }
        return FALSE;
    }

    //if peer is array, assume it's a user record
    if(is_array($peer)) {
        $_adminperms = ($peer['user_admin'] === 1 ? $peer['user_perms'] : '');
        $_user = true;
        $_admin = $peer['user_admin'] === 1;
        $peer = false;
        $_userjoined = $peer['user_joined'];
    } else {
        $_adminperms = defined('ADMINPERMS') ? ADMINPERMS : '';
        $_user = USER;
        $_admin = ADMIN;
        $_userjoined = USERJOINED;
    }

    //Test 'special' userclass numbers
    if (preg_match("/^([0-9]+)$/", $var) && !$peer)
    {
        if ($var == e_UC_MAINADMIN && getperms('0', $_adminperms))
        {
            return TRUE;
        }
        //&& $_admin == FALSE
        if ($var == e_UC_NEWUSER  && (time() < ($_userjoined + (varset($pref['user_new_period'],0)*86400))))
        {
            return TRUE;
        }

        if ($var == e_UC_MEMBER && $_user == TRUE)
        {
            return TRUE;
        }

        if ($var == e_UC_GUEST && $_user == FALSE) {
            return TRUE;
        }

        if ($var == e_UC_PUBLIC) {
            return TRUE;
        }

        if ($var == e_UC_NOBODY) {
            return FALSE;
        }

        if ($var == e_UC_ADMIN && $_admin) {
            return TRUE;
        }
        if ($var == e_UC_READONLY) {
            return TRUE;
        }
    }

    if ($debug) {
        echo "USERCLASS: ".$userclass.", \$var = $var : ";
    }

    if (!defined("USERCLASS") || $userclass == "") {
        if ($debug) {
            echo "FALSE<br />";
        }
        return FALSE;
    }

    // user has classes set - continue
    if (preg_match("/^([0-9]+)$/", $var)) {
        $tmp=explode(',', $userclass);
        if (is_numeric(array_search($var, $tmp))) {
            if ($debug) {
                echo "TRUE<br />";
            }
            return TRUE;
        }
    } else {
        // var is name of class ...
        $sql=new db;
        if ($sql->db_Select("userclass_classes", "*", "userclass_name='".$tp -> toDB($var)."' ")) {
            $row=$sql->db_Fetch();
            $tmp=explode(',', $userclass);
            if (is_numeric(array_search($row['userclass_id'], $tmp))) {
                if ($debug) {
                    echo "TRUE<br />";
                }
                return TRUE;
            }
        }
    }

    if ($debug) {
        echo "NOTNUM! FALSE<br />";
    }

    return FALSE;
}

function getperms($arg, $ap = ADMINPERMS)
{
    global $PLUGINS_DIRECTORY;

    if(!ADMIN)
    {
        return FALSE;
    }
    if ($ap == "0")
    {
        return TRUE;
    }
    if ($ap == "")
    {
        return FALSE;
    }
    $ap='.'.$ap;
    if ($arg == 'P' && preg_match("#(.*?)/".$PLUGINS_DIRECTORY."(.*?)/(.*?)#", e_SELF, $matches))
    {
        $psql=new db;
        if ($psql->db_Select('plugin', 'plugin_id', "plugin_path = '".$matches[2]."' "))
        {
            $row=$psql->db_Fetch();
            $arg='P'.$row[0];
        }
    }
    if (strpos($ap, ".".$arg.".") !== FALSE)
    {
        return TRUE;
    }
    else
    {
        return FALSE;
    }
}

/**
 * Get the user data from user and user_extended tables
 *
 * @return array
 */
function get_user_data($uid, $extra = "")
{
    global $pref, $sql;
    $uid = intval($uid);
    $var = array();
    if($uid == 0) { return $var; }
    if($ret = getcachedvars("userdata_{$uid}"))
    {
        return $ret;
    }

    $qry = "
    SELECT u.*, ue.* FROM #user AS u
    LEFT JOIN #user_extended AS ue ON ue.user_extended_id = u.user_id
    WHERE u.user_id = {$uid} {$extra}
    ";
    if (!$sql->db_Select_gen($qry))
    {
        $qry = "SELECT * FROM #user AS u WHERE u.user_id = {$uid} {$extra}";
        if(!$sql->db_Select_gen($qry))
        {
            return FALSE;
        }
    }

    $var = $sql->db_Fetch(MYSQL_ASSOC);
    $extended_struct = getcachedvars("extended_struct");
    if(!$extended_struct)
    {
        unset($extended_struct);
        $qry = "SHOW COLUMNS FROM #user_extended ";
        if($sql->db_Select_gen($qry))
        {
            while($row = $sql->db_Fetch(MYSQL_ASSOC))
            {
                if($row['Default'] != "")
                {
                    $extended_struct[] = $row;
                }
            }
            if(isset($extended_struct))
            {
                cachevars("extended_struct", $extended_struct);
            }
        }
    }

    if(isset($extended_struct))
    {
        foreach($extended_struct as $row)
        {
            if($row['Default'] != "" && ($var[$row['Field']] == NULL || $var[$row['Field']] == "" ))
            {
                $var[$row['Field']] = $row['Default'];
            }
        }
    }
    if ($var['user_perms'] == '0.') $var['user_perms'] = '0';       // Handle some legacy situations
    cachevars("userdata_{$uid}", $var);
    return $var;
}

//------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------//

function save_prefs($table = 'core', $uid = USERID, $row_val = '')
{
  global $pref, $user_pref, $tp, $PrefCache, $sql, $eArrayStorage;
  if ($table == 'core')
  {
    if ($row_val == '')
    {       // Save old version as a backup first
      $sql->db_Select_gen("REPLACE INTO `#core` (e107_name,e107_value) values ('SitePrefs_Backup', '".addslashes($PrefCache)."') ");

      // Now save the updated values
      // traverse the pref array, with toDB on everything
      $_pref = $tp -> toDB($pref, true, true, 'pReFs');
      // Create the data to be stored
      $sql->db_Select_gen("REPLACE INTO `#core` (e107_name,e107_value) values ('SitePrefs', '".$eArrayStorage->WriteArray($_pref)."') ");
      ecache::clear('SitePrefs');
    }
  }
  else
  {
    $_user_pref = $tp -> toDB($user_pref);
    $tmp=addslashes(serialize($_user_pref));
    $sql->db_Update("user", "user_prefs='$tmp' WHERE user_id=".intval($uid));
    return $tmp;
  }
}