<?php
$url = 'https://service.tradesoft.ru/3/';
$user = 'victormek';
$password = 'MEKSTER11';
$eurotradeUrl = 'shop_eurotradeplus_pl';
$eurotradeLogin = 'NORDIC';
$eurotradePassword = 'NORDIC11';

$request = getRequest('GetPriceList', getContainer('1069','A.B.S.'));

function getContainer($code, $producer, $itemHash = null) {
    return array(
        'container' => array(
            array(
                'provider' => $GLOBALS['eurotradeUrl'],
                'login' => $GLOBALS['eurotradeLogin'],
                'password' => $GLOBALS['eurotradePassword'],
                'code' => $code,
                'producer' => $producer,
                'itemHash' => $itemHash
            )
        ));
}

function getRequest($action, $extra = array()) {
    $params = array(
        'service' => 'provider',
        'action' => $action,
        'user' => $GLOBALS['user'],
        'password' => $GLOBALS['password'],
    ) + $extra;
    return $params;
}

$response = getResponse($request);
$response = current($response['container']);
$response = $response['data'];
$responce = parseResponseByProducer($response, 'A.B.S.');
$chepestKey = findCheapestByPrice($responce);
$itemHash = $responce[$chepestKey]['itemHash'];
print_r($responce[$chepestKey]);

$preOrderSearch = getRequest('PreOrderSearch', getContainer('1069','A.B.S.','e0c99bf30838b1a742c62aaafdf60446'));

$preOrderSearch1 = array(
    'service' => 'provider',
    'user' => $GLOBALS['user'],
    'password' => $GLOBALS['password'],
    'timeLimit' => '10',
    'action' => 'PreOrderSearch',
    'container' => array(
        array(
            'provider' => $GLOBALS['eurotradeUrl'],
            'login' => $GLOBALS['eurotradeLogin'],
            'password' => $GLOBALS['eurotradePassword'],
            'code' => '1069',
            'producer' => 'A.B.S.',
            'itemHash' => 'e0c99bf30838b1a742c62aaafdf60446'
        )
    )
);

print_r(getResponse($preOrderSearch));
die;

function findCheapestByPrice($big) {
    $lowest = array();
    foreach($big as $id => $array) {
        $low = false;
        $prev = false;
        foreach($array as $k => $a) {
            if(!$low) {
                $low = $k;
                $prev = $a['price'];
            } else {
                if($a['price'] < $prev) {
                    $prev = $a['price'];
                    $low = $k;
                }
            }
        }
        $lowest[$id] = array( $low => $array[$low]);
    }
    return key(array_column($lowest, 'price'));
}

function parseResponseByProducer($responce, $producer) {
    return array_filter($responce, function ($var) use ($producer) {
        return ($var['producer'] == $producer);
    });
}

function getResponse($request) {
    try {
        $post = json_encode($request);
        $ch = curl_init($GLOBALS['url']);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
        $data = curl_exec($ch);
        curl_close($ch);
        $responce = json_decode($data,true);
        return $responce;
    } catch (Exception $e) {
        return $e->getMessage();
    }
}