<?php

namespace api;

include_once "../../global.inc.php";
include_once PATH_DATABASE . "/PisSqlManager.php";
include_once PATH_UTILITTY . "/XmlManager.php";
require_once PATH_API . "/Api.php";

/**
 * This class provides some spezial SpsAPI methods
 * @author stubbfel
 * @since 20.06.2013
 */
class PisApi extends Api {

    /**
     * Route string for the alias paramter
     * @var string
     */
    public static $routeParameterPids = "/pid/:pid+";

    /**
     * max number of pid for each query
     * @var int
     */
    private $maxPid = 10;

    /**
     * Default-Constructor
     */
    public function __construct() {
        $this->sqlManager = new \database\PisSqlManager();
        parent::__construct();
    }

    /**
     * Default-DeConstructor
     */
    public function __destruct() {
        parent::__destruct();
    }

    /**
     * Method start a pis-query
     * @param array $queryArgs
     * @return query result as xml
     */
    public function sendPisQuery($queryArgs) {
        $pidList = $this->removeEmptyItmes($queryArgs);
        if (count($pidList) < $this->maxPid) {
            $result = $this->sqlManager->sendPisQuery($pidList);
            return \utiliy\XmlManager::arrayToPisXml($result);
        }
        return NULL;
    }

    /**
     * Method remove all empty string
     * @param array $queryArgs
     * @return array
     */
    private function removeEmptyItmes($queryArgs) {
        foreach ($queryArgs as $key => $value) {
            if (empty($value)) {
                unset($queryArgs[$key]);
            }
        }
        return $queryArgs;
    }

}

?>