Create fixed discount

Use setPromotionDiscount to set a fixed promotion discount.

Request parameters

Parameter	Type / Description
sessionID	Required (string) Output of the Login method.
promotionCode	Required (string) The code corresponding to the promotion that you want to set the discount for.
promotionDiscount	Required (object)
promotionDiscount.Type	Required (string) Discount type: PERCENT, use in combination with Value FIXED, use in combination with Values and DefaultCurrency
promotionDiscount.Value/Values	Required (int / array of objects) Value = Int, determines the discount percentage from 0 to 100 Values = Array of Value objects
promotionDiscount.Value/Values.Value	Required (object)
promotionDiscount.Value/Values.Value.Currency	Required (string) Discount currency ISO code (ISO 4217).
promotionDiscount.Value/Values.Value.Amount	Required (int) Discount amount in corresponding currency.
promotionDiscount.DefaultCurrency	Required (string) Default discount currency ISO code (ISO 4217).

Request sample

<?php
declare(strict_types=1);

class Configuration
{
    public const MERCHANT_CODE = '';
    public const MERCHANT_KEY = '';
    public const URL = 'http://api.2checkout.com/soap/6.0';
    public const ACTION = 'setPromotionDiscount';
    public const PROMOTION_CODE = "AB3WMME0UA";
    //array or JSON
    public const PAYLOAD = <<<JSON
{
  "Type": "FIXED",
  "DefaultCurrency": "USD",
  "Values": [\
    {\
        "Currency": "USD",\
        "Amount": 10\
    },\
    {\
        "Currency": "EUR",\
        "Amount": 10\
    }\
  ]
}
JSON;
}

class Client
{
    private const LOGIN_METHOD = 'login';
    private $calls = 1;
    private $sessionId;

    private function generateAuth(): array
    {
        $merchantCode = Configuration::MERCHANT_CODE;
        $key = Configuration::MERCHANT_KEY;
        $date = gmdate('Y-m-d H:i:s');
        $string = strlen($merchantCode) . $merchantCode . strlen($date) . $date;
        $hash = hash_hmac('md5', $string, $key);

        return compact('merchantCode', 'date', 'hash');
    }

    public function login(string $url)
    {
        $payload = $this->generateAuth();
        $response = $this->call($url, array_values($payload), self::LOGIN_METHOD);
        $this->sessionId = $response['result'];
    }

    public function call(
        string $url = Configuration::URL,
        $payload = Configuration::PAYLOAD,
        string $action = Configuration::ACTION,
        string $promotionCode = Configuration::PROMOTION_CODE
    ): ?array {
        if (empty($this->sessionId) && $action !== self::LOGIN_METHOD) {
            $this->login($url);
        }
        if(is_string($payload)) {
            $payload = json_decode($payload, true);
        }
        if (!empty($this->sessionId)) {
            $payload = [$this->sessionId, $promotionCode, $payload];
        }
        $payload = array_filter($payload);

        $request = json_encode([\
            'jsonrpc' => '2.0',\
            'method' => $action,\
            'params' => $payload,\
            'id' => $this->calls++,\
        ]);
        $curl = curl_init($url);
        curl_setopt($curl, CURLOPT_POST, 1);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
        curl_setopt($curl, CURLOPT_SSLVERSION, 0);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: application/json', 'Accept: application/json', 'Cookie: XDEBUG_SESSION=PHPSTORM'));
        curl_setopt($curl, CURLOPT_POSTFIELDS, $request);
        $response = curl_exec($curl);
        if(empty($response)) {
            die('Server unavailable');
        }
        echo $response . '</br>';
        return json_decode($response, true);;
    }
}
$client = new Client();
$result = $client->call();
var_dump($result);

Response parameters

Parameter	Type
promotionDiscount	Object