(Unicode C) Amazon Pay - Create Refund

See more Amazon Pay Examples

Initiate a full or partial refund for a charge.

Note: This example requires Chilkat v9.5.0.89 or later. Contact support@chilkatsoft.com to get a v9.5.0.89 pre-release for testing.

For more information, see https://developer.amazon.com/docs/amazon-pay-api-v2/refund.html#create-refund

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#include <C_CkHttpW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkPrivateKeyW.h>
#include <C_CkHttpResponseW.h>
#include <C_CkStringBuilderW.h>

void ChilkatSample(void)
    {
    HCkHttpW http;
    BOOL success;
    HCkJsonObjectW json;
    HCkPrivateKeyW privKey;
    const wchar_t *publicKeyId;
    HCkHttpResponseW resp;
    HCkStringBuilderW sbResponseBody;
    HCkJsonObjectW jResp;
    int respStatusCode;
    const wchar_t *refundId;
    const wchar_t *chargeId;
    const wchar_t *refundAmountAmount;
    const wchar_t *refundAmountCurrencyCode;
    const wchar_t *softDescriptor;
    const wchar_t *creationTimestamp;
    const wchar_t *statusDetailsState;
    const wchar_t *statusDetailsReasonCode;
    const wchar_t *statusDetailsReasonDescription;
    const wchar_t *statusDetailsLastUpdatedTimestamp;
    const wchar_t *releaseEnvironment;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    http = CkHttpW_Create();

    // Implements the following CURL command:

    // curl "https://pay-api.amazon.com/:version/refunds/" \
    // -X POST
    // -H "authorization:Px2e5oHhQZ88vVhc0DO%2FsShHj8MDDg%3DEXAMPLESIGNATURE"
    // -H "x-amz-pay-date:20201012T235046Z"
    // -H "x-amz-pay-idempotency-key:AVLo5tI10BHgEk2jEXAMPLEKEY"
    // -d '{
    //     "chargeId": "CHARGE_ID",
    //     "refundAmount": {
    //         "amount": "14.00",
    //         "currencyCode": "USD"
    //     },
    //     "softDescriptor": "Descriptor"
    // }'

    // Use the following online tool to generate HTTP code from a CURL command
    // Convert a cURL Command to HTTP Source Code

    // Use this online tool to generate code from sample JSON:
    // Generate Code to Create JSON

    // The following JSON is sent in the request body.

    // {
    //     "chargeId": "CHARGE_ID",
    //     "refundAmount": {
    //         "amount": "14.00",
    //         "currencyCode": "USD"
    //     },
    //     "softDescriptor": "Descriptor"
    // }

    json = CkJsonObjectW_Create();
    CkJsonObjectW_UpdateString(json,L"chargeId",L"CHARGE_ID");
    CkJsonObjectW_UpdateString(json,L"refundAmount.amount",L"14.00");
    CkJsonObjectW_UpdateString(json,L"refundAmount.currencyCode",L"USD");
    CkJsonObjectW_UpdateString(json,L"softDescriptor",L"Descriptor");

    // Load your Amazon Pay private key.  
    // There are many other ways to load private keys into the Chilkat private key object, such as from different formats,
    // or from in-memory strings or bytes.
    privKey = CkPrivateKeyW_Create();
    success = CkPrivateKeyW_LoadPemFile(privKey,L"C:/someDir/myAmazonPayPrivateKey.pem");
    if (success == FALSE) {
        wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(privKey));
        CkHttpW_Dispose(http);
        CkJsonObjectW_Dispose(json);
        CkPrivateKeyW_Dispose(privKey);
        return;
    }

    // Provide your Amazon Pay private key and Public Key ID 
    // Use your public key ID here.  It must be the one associated with the private key.
    // Note: The SetAuthPrivateKey method was added in Chilkat v9.5.0.89
    publicKeyId = L"SANDBOX-AHEGSJCM3L2S637RBGABLAFW";
    success = CkHttpW_SetAuthPrivateKey(http,publicKeyId,privKey);
    if (success == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkJsonObjectW_Dispose(json);
        CkPrivateKeyW_Dispose(privKey);
        return;
    }

    // Note: When the private key is provided as shown above, Chilkat will automatically add the required x-amz-pay-* headers to the HTTP request,
    // and will also sign the request.  Nothing more is needed.
    // Chilkat automatically generates and adds the following headers:
    // 
    // x-amz-pay-date
    // x-amz-pay-host
    // x-amz-pay-region
    // x-amz-pay-idempotency-key
    // Authorization

    CkHttpW_putAccept(http,L"application/json");

    // To use the live system, replace "sandbox" with "live" in the URL passed to PostJson3.
    // Also, make sure to use the correct region: pay-api.amazon.com, pay-api.amazon.eu, or pay-api.amazon.jp
    resp = CkHttpW_PostJson3(http,L"https://pay-api.amazon.eu/sandbox/v2/refunds/",L"application/json",json);
    if (CkHttpW_getLastMethodSuccess(http) == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkJsonObjectW_Dispose(json);
        CkPrivateKeyW_Dispose(privKey);
        return;
    }

    sbResponseBody = CkStringBuilderW_Create();
    CkHttpResponseW_GetBodySb(resp,sbResponseBody);
    jResp = CkJsonObjectW_Create();
    CkJsonObjectW_LoadSb(jResp,sbResponseBody);
    CkJsonObjectW_putEmitCompact(jResp,FALSE);

    // If the status code is not equal to 201, this will display error information.
    wprintf(L"Response Body:\n");
    wprintf(L"%s\n",CkJsonObjectW_emit(jResp));

    respStatusCode = CkHttpResponseW_getStatusCode(resp);
    wprintf(L"Response Status Code = %d\n",respStatusCode);
    if (respStatusCode != 201) {
        wprintf(L"Failed.\n");
        CkHttpResponseW_Dispose(resp);
        CkHttpW_Dispose(http);
        CkJsonObjectW_Dispose(json);
        CkPrivateKeyW_Dispose(privKey);
        CkStringBuilderW_Dispose(sbResponseBody);
        CkJsonObjectW_Dispose(jResp);
        return;
    }

    CkHttpResponseW_Dispose(resp);

    // Sample JSON response:
    // (Sample code for parsing the JSON response is shown below)

    // {
    //      "refundId": "S01-5105180-3221187-R022311",
    //      "chargeId": "S01-5105180-3221187-C056351",
    //      "refundAmount": {
    //          "amount": "14.00",
    //          "currencyCode": "USD"
    //      },
    //      "softDescriptor": "Descriptor",
    //      "creationTimestamp": "20190714T155300Z",
    //      "statusDetails": {
    //          "state": "RefundInitiated",
    //          "reasonCode": null,
    //          "reasonDescription": null,
    //          "lastUpdatedTimestamp": "20190714T155300Z"
    //      },
    //      "releaseEnvironment": "Sandbox"
    // }

    // Sample code for parsing the JSON response...
    // Use the following online tool to generate parsing code from sample JSON:
    // Generate Parsing Code from JSON

    // Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
    // See this example explaining how this memory should be used: const char * functions.

    refundId = CkJsonObjectW_stringOf(jResp,L"refundId");
    chargeId = CkJsonObjectW_stringOf(jResp,L"chargeId");
    refundAmountAmount = CkJsonObjectW_stringOf(jResp,L"refundAmount.amount");
    refundAmountCurrencyCode = CkJsonObjectW_stringOf(jResp,L"refundAmount.currencyCode");
    softDescriptor = CkJsonObjectW_stringOf(jResp,L"softDescriptor");
    creationTimestamp = CkJsonObjectW_stringOf(jResp,L"creationTimestamp");
    statusDetailsState = CkJsonObjectW_stringOf(jResp,L"statusDetails.state");
    statusDetailsReasonCode = CkJsonObjectW_stringOf(jResp,L"statusDetails.reasonCode");
    statusDetailsReasonDescription = CkJsonObjectW_stringOf(jResp,L"statusDetails.reasonDescription");
    statusDetailsLastUpdatedTimestamp = CkJsonObjectW_stringOf(jResp,L"statusDetails.lastUpdatedTimestamp");
    releaseEnvironment = CkJsonObjectW_stringOf(jResp,L"releaseEnvironment");


    CkHttpW_Dispose(http);
    CkJsonObjectW_Dispose(json);
    CkPrivateKeyW_Dispose(privKey);
    CkStringBuilderW_Dispose(sbResponseBody);
    CkJsonObjectW_Dispose(jResp);

    }