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Lianja

Amazon Pay - Cancel Charge

See more Amazon Pay Examples

Moves Charge to Canceled state and releases any authorized payments.

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Lianja 
llSuccess = .F.

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

loHttp = createobject("CkHttp")

// Implements the following CURL command:

// curl "https://pay-api.amazon.com/:version/charges/:chargeId/cancel" \
// -X DELETE
// -H "authorization:Px2e5oHhQZ88vVhc0DO%2FsShHj8MDDg%3DEXAMPLESIGNATURE"
// -H "x-amz-pay-date:20201012T235046Z"
// -d '{
//     "cancellationReason": "REASON DESCRIPTION"
// }'

// 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.

// {
//   "cancellationReason": "REASON DESCRIPTION"
// }

loJson = createobject("CkJsonObject")
loJson.UpdateString("cancellationReason","REASON DESCRIPTION")

loSbRequestBody = createobject("CkStringBuilder")
loJson.EmitSb(loSbRequestBody)

// 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.
loPrivKey = createobject("CkPrivateKey")
llSuccess = loPrivKey.LoadPemFile("C:/someDir/myAmazonPayPrivateKey.pem")
if (llSuccess = .F.) then
    ? loPrivKey.LastErrorText
    release loHttp
    release loJson
    release loSbRequestBody
    release loPrivKey
    return
endif

// 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.
lcPublicKeyId = "SANDBOX-AHEGSJCM3L2S637RBGABLAFW"
llSuccess = loHttp.SetAuthPrivateKey(lcPublicKeyId,loPrivKey)
if (llSuccess = .F.) then
    ? loHttp.LastErrorText
    release loHttp
    release loJson
    release loSbRequestBody
    release loPrivKey
    return
endif

// 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
// Authorization

loHttp.Accept = "application/json"

// Use the actual chargeId here:
llSuccess = loHttp.SetUrlVar("chargeId","bd504926-f659-4ad7-a1a9-9a747aaf5275")
// To use the live system, replace "sandbox" with "live" in the URL passed to HttpSb.
// Also, make sure to use the correct region: pay-api.amazon.com, pay-api.amazon.eu, or pay-api.amazon.jp
loResp = createobject("CkHttpResponse")
llSuccess = loHttp.HttpSb("DELETE","https://pay-api.amazon.eu/sandbox/v2/charges/{$chargeId}/cancel",loSbRequestBody,"utf-8","application/json",loResp)
if (llSuccess = .F.) then
    ? loHttp.LastErrorText
    release loHttp
    release loJson
    release loSbRequestBody
    release loPrivKey
    release loResp
    return
endif

loSbResponseBody = createobject("CkStringBuilder")
loResp.GetBodySb(loSbResponseBody)
loJResp = createobject("CkJsonObject")
loJResp.LoadSb(loSbResponseBody)
loJResp.EmitCompact = .F.

// If the status code is not equal to 200, this will display error information.
? "Response Body:"
? loJResp.Emit()

lnRespStatusCode = loResp.StatusCode
? "Response Status Code = " + str(lnRespStatusCode)
if (lnRespStatusCode <> 200) then
    ? "Failed."
    release loHttp
    release loJson
    release loSbRequestBody
    release loPrivKey
    release loResp
    release loSbResponseBody
    release loJResp
    return
endif

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

// {
//   "chargeId": "P21-1111111-1111111-C111111",
//   "chargePermissionId": "P21-1111111-1111111",
//   "chargeAmount": {
//     "amount": "14.00",
//     "currencyCode": "USD"
//   },
//   "captureAmount": {
//     "amount": "14.00",
//     "currencyCode": "USD"
//   },
//   "refundedAmount": {
//     "amount": "0.00",
//     "currencyCode": "USD"
//   },
//   "convertedAmount": "14.00",
//   "conversionRate": "1.00",
//   "softDescriptor": "SOFT DESCRIPTOR",
//   "merchantMetadata": null,
//   "providerMetadata": {
//     "providerReferenceId": null
//   },
//   "statusDetails": {
//     "state": "Canceled",
//     "reasonCode": null,
//     "reasonDescription": null,
//     "lastUpdatedTimestamp": "20190714T155300Z"
//   },
//   "creationTimestamp": "20190714T155300Z",
//   "expirationTimestamp": "20190715T155300Z",
//   "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

lcChargeId = loJResp.StringOf("chargeId")
lcChargePermissionId = loJResp.StringOf("chargePermissionId")
lcChargeAmountAmount = loJResp.StringOf("chargeAmount.amount")
lcChargeAmountCurrencyCode = loJResp.StringOf("chargeAmount.currencyCode")
lcCaptureAmountAmount = loJResp.StringOf("captureAmount.amount")
lcCaptureAmountCurrencyCode = loJResp.StringOf("captureAmount.currencyCode")
lcRefundedAmountAmount = loJResp.StringOf("refundedAmount.amount")
lcRefundedAmountCurrencyCode = loJResp.StringOf("refundedAmount.currencyCode")
lcConvertedAmount = loJResp.StringOf("convertedAmount")
lcConversionRate = loJResp.StringOf("conversionRate")
lcSoftDescriptor = loJResp.StringOf("softDescriptor")
lcMerchantMetadata = loJResp.StringOf("merchantMetadata")
lcProviderMetadataProviderReferenceId = loJResp.StringOf("providerMetadata.providerReferenceId")
lcStatusDetailsState = loJResp.StringOf("statusDetails.state")
lcStatusDetailsReasonCode = loJResp.StringOf("statusDetails.reasonCode")
lcStatusDetailsReasonDescription = loJResp.StringOf("statusDetails.reasonDescription")
lcStatusDetailsLastUpdatedTimestamp = loJResp.StringOf("statusDetails.lastUpdatedTimestamp")
lcCreationTimestamp = loJResp.StringOf("creationTimestamp")
lcExpirationTimestamp = loJResp.StringOf("expirationTimestamp")
lcReleaseEnvironment = loJResp.StringOf("releaseEnvironment")


release loHttp
release loJson
release loSbRequestBody
release loPrivKey
release loResp
release loSbResponseBody
release loJResp