Create fixed discount

Overview

Use setPromotionDiscount to set a fixed promotion discount.

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)
	Type			Required (String)
				Discount type: PERCENT, use in combination with Value FIXED, use in combination with Values and DefaultCurrency
	Value / Values			Required (Int / Array of objects)
				Value = Int, determines the discount percentage from 0 to 100 Values = Array of Value objects
		Value		Required (Object)
			Currency	Required (String)
				Discount currency ISO code (ISO 4217).
			Amount	Required (Int)
				Discount amount in corresponding currency.
	DefaultCurrency			Required (String)
				Default discount currency ISO code (ISO 4217).

Response

Parameter	Type/Description
promotionDiscount	Object

Request

<?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);