using Gr4vy;
using Gr4vy.Models.Components;
using System.Collections.Generic;

var sdk = new Gr4vySDK(
    id: "example",
    server: SDKConfig.Server.Sandbox,
    bearerAuthSource: Auth.WithToken(privateKey),
    merchantAccountId: "default"
);

var res = await sdk.GiftCards.Balances.ListAsync(giftCardBalanceRequest: new GiftCardBalanceRequest() {
    Items = new List<Item>() {
        Item.CreateGiftCardStoredRequest(
            new GiftCardStoredRequest() {
                Id = "356d56e5-fe16-42ae-97ee-8d55d846ae2e",
            }
        ),
        Item.CreateGiftCardStoredRequest(
            new GiftCardStoredRequest() {
                Id = "356d56e5-fe16-42ae-97ee-8d55d846ae2e",
            }
        ),
        Item.CreateGiftCardRequest(
            new GiftCardRequest() {
                Number = "4123455541234561234",
                Pin = "1234",
            }
        ),
    },
});

// handle response

{
  "items": [
    {
      "merchant_account_id": "<string>",
      "bin": "<string>",
      "sub_bin": "<string>",
      "last4": "<string>",
      "usage_count": 123,
      "cit_usage_count": 123,
      "type": "gift-card",
      "id": "356d56e5-fe16-42ae-97ee-8d55d846ae2e",
      "currency": "AUD",
      "expiration_date": "2013-07-16T19:23:00.000+00:00",
      "balance": 1299,
      "balance_error_code": "incorrect_currency",
      "balance_raw_error_code": "10363",
      "balance_raw_error_message": "This currency is not supported by the merchant.",
      "last_used_at": "2013-07-16T19:23:00.000+00:00",
      "cit_last_used_at": "2013-07-16T19:23:00.000+00:00"
    }
  ]
}