exchange-2.0/app/Classes/Modules/Vouchers/Services/RedeemsVoucher.php

<?php

namespace App\Classes\Modules\Vouchers\Services;

use ErrorException;

class RedeemsVoucher
{

    /** @var VoucherifyClient */
    private $voucherifyClient;


    /**
     * RedeemsVoucher constructor.
     *
     */
    public function __construct()
    {
        $this->voucherifyClient = createVoucherifyClient();
    }

     /**
     * @param string $promoCode
     * @param string $amount
     * @param object $employee
     * @return null|object
     * @throws ErrorException
     */
    public function execute(string $promoCode, string $amount, object $employee)
    {
        try {
            $result = $this->voucherifyClient->redemptions->redeem($promoCode, [
                "customer" => [
                    // "id" => $employee->id,
                    "name" => $employee->name,
                    "email" => $employee->email,
                ],
                "order" => [
                    "amount" => $amount * 100  //converting it to cents
                ]
            ]);
            return $result;
        } catch (\Voucherify\ClientException $e) {
            throw $e;
        }
    }
}