<?php 
    session_start();

    require '../../../assets/utils/db_auth.php';

    // identity source of zone and aisle
    if(empty($data["type"])){
        $warehouse = (int)$data['warehouse'];
        $zone = $data['zone'];
        $aisle = $data["aisle"];
    }else{
        $warehouse = (int)$data['warehouse_'.$data["type"]];
        $zone = $data['zone_'.$data["type"]];
        $aisle = $data["aisle_".$data["type"]];
    }

    // Detect if numeric and zero-pad both input and query columns
    if (is_numeric($aisle)) {
        $aisle = str_pad($aisle, 5, '0', STR_PAD_LEFT);
        $condition = "LPAD(aisle_from, 5, '0') <= :aisle_from AND LPAD(aisle_to, 5, '0') >= :aisle_to";
    } else {
        $condition = ":aisle_from >= aisle_from AND :aisle_to <= aisle_to";
    }

    $id = (int)$data['id'];

    $sql = "SELECT * 
        FROM md_storage
        WHERE 
            company_id = :company_id and 
            warehouse = :warehouse and 
            `zone` = :zone and 
            $condition
        ";

    $sth = $pdo2->prepare($sql);
    $sth->execute([
        ":company_id" => $company_id,
        ":warehouse" => $warehouse,
        ":zone" => $zone,
        ":aisle_from" => $aisle,
        ":aisle_to" => $aisle
    ]);
    db_check($sth, $answer);

    $pre = $sth->fetchAll(PDO::FETCH_ASSOC);

    $output = [];
    foreach ($pre as $key => $value) {
        $output = array_merge($output, range($value["rack_from"], $value["rack_to"]));
    }

    $answer["output"] = $output;
    $answer["success"] = 1;
    exit(json_encode($answer));

?>