<?php

namespace database;

include_once "../../global.inc.php";
include_once PATH_UTILITTY . "/StringManager.php";
require_once PATH_DATABASE . "/SqlManager.php";

/**
 * Description of ZisSqlManager
 * 
 * @author stubbfel
 * @since 20.06.2013
 */
class PisSqlManager extends SQLManager {

    /**
     * Fieldname of the placeID
     * @var string
     */
    public static $placeId = "pid";

    /**
     * Fieldname of the name of the information
     * @var string
     */
    public static $infName = "iName";

    /**
     * Fieldname of the value of the information
     * @var string
     */
    public static $infValue = "iValue";

    /**
     * String for the select part of the query
     * @var string
     */
    private $selectTerm = "SELECT pid, iName, iValue FROM pis WHERE ";

    /**
     * String for the orderby part of the query
     * @var string
     */
    private $orderByTerm = " ORDER BY pid";

    /**
     * String for the pid part of the query
     * @var string
     */
    private $pidTerm = "pid = ";

    /**
     * Default-Constructor
     */
    public function __construct() {
        parent::__construct();
    }

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

    /**
     * Methods send an query for the pis-service
     * @param array $queryArgs
     * @return array [num][assoc]
     */
    public function sendPisQuery($queryArgs) {

        // build query string
        $query = $this->selectTerm;
        if ($this->validPidList($queryArgs)) {
            $query .= $this->createPidWhereString($queryArgs) . $this->orderByTerm;
        } else {
            return null;
        }
        // send query
        return $this->query($query);
    }

    /**
     * Method check if  all items of the pidlist are orly digits
     * @param array $poly
     * @return boolean
     */
    private function validPidList($pidList) {
        foreach ($pidList as $value) {

            if (!ctype_digit($value) || PHP_INT_MAX < $value) {
                return FALSE;
            }
        }
        return TRUE;
    }

    /**
     * Method convert a pidList to a where-string
     * @param array $pidList
     * @return string
     */
    private function createPidWhereString($pidList) {
        $pidListStr = \utiliy\StringManager::$emptyString;
        foreach ($pidList as $value) {
            $pidListStr .= $this->pidTerm . $value . $this->orTerm;
        }
        $result = substr($pidListStr, 0, strlen($pidListStr) - strlen($this->orTerm));
        return $result;
    }

}

?>