(PureBasic) Amazon Pay - Create Charge

See more Amazon Pay Examples

Creates a Charge to authorize payment, if you have a Charge Permission in a Chargeable state. You can optionally capture payment immediately by setting captureNow to true. You can create up to 25 Charges per one-time Charge Permission.

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/charge.html#create-charge

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkHttpResponse.pb"
IncludeFile "CkHttp.pb"
IncludeFile "CkStringBuilder.pb"
IncludeFile "CkJsonObject.pb"
IncludeFile "CkPrivateKey.pb"

Procedure ChilkatExample()

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

    http.i = CkHttp::ckCreate()
    If http.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success.i

    ; Implements the following CURL command:

    ; curl "https://pay-api.amazon.com/:version/charges/" \
    ; -X POST
    ; -H "authorization:Px2e5oHhQZ88vVhc0DO%2FsShHj8MDDg%3DEXAMPLESIGNATURE"
    ; -H "x-amz-pay-date:20201012T235046Z"
    ; -H "x-amz-pay-idempotency-key:AVLo5tI10BHgEk2jEXAMPLEKEY"
    ; -d '{
    ;     "chargePermissionId": "P21-1111111-1111111",
    ;     "chargeAmount": {
    ;         "amount": "14.00",
    ;         "currencyCode": "USD"
    ;     },
    ;     "captureNow": true, // default is false
    ;     "softDescriptor": "Descriptor",
    ;     "canHandlePendingAuthorization": false //default is false
    ; }'

    ; 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.

    ; {
    ;     "chargePermissionId": "P21-1111111-1111111",
    ;     "chargeAmount": {
    ;         "amount": "14.00",
    ;         "currencyCode": "USD"
    ;     },
    ;     "captureNow": true, // default is false
    ;     "softDescriptor": "Descriptor",
    ;     "canHandlePendingAuthorization": false //default is false
    ; }

    json.i = CkJsonObject::ckCreate()
    If json.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::ckUpdateString(json,"chargePermissionId","P21-1111111-1111111")
    CkJsonObject::ckUpdateString(json,"chargeAmount.amount","14.00")
    CkJsonObject::ckUpdateString(json,"chargeAmount.currencyCode","USD")
    CkJsonObject::ckUpdateBool(json,"captureNow",1)
    CkJsonObject::ckUpdateString(json,"softDescriptor","Descriptor")
    CkJsonObject::ckUpdateBool(json,"canHandlePendingAuthorization",0)

    ; 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.i = CkPrivateKey::ckCreate()
    If privKey.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkPrivateKey::ckLoadPemFile(privKey,"C:/someDir/myAmazonPayPrivateKey.pem")
    If success = 0
        Debug CkPrivateKey::ckLastErrorText(privKey)
        CkHttp::ckDispose(http)
        CkJsonObject::ckDispose(json)
        CkPrivateKey::ckDispose(privKey)
        ProcedureReturn
    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.
    ; Note: The SetAuthPrivateKey method was added in Chilkat v9.5.0.89
    publicKeyId.s = "SANDBOX-AHEGSJCM3L2S637RBGABLAFW"
    success = CkHttp::ckSetAuthPrivateKey(http,publicKeyId,privKey)
    If success = 0
        Debug CkHttp::ckLastErrorText(http)
        CkHttp::ckDispose(http)
        CkJsonObject::ckDispose(json)
        CkPrivateKey::ckDispose(privKey)
        ProcedureReturn
    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
    ; x-amz-pay-idempotency-key
    ; Authorization

    CkHttp::setCkAccept(http, "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.i = CkHttp::ckPostJson3(http,"https://pay-api.amazon.eu/sandbox/v2/charges/","application/json",json)
    If CkHttp::ckLastMethodSuccess(http) = 0
        Debug CkHttp::ckLastErrorText(http)
        CkHttp::ckDispose(http)
        CkJsonObject::ckDispose(json)
        CkPrivateKey::ckDispose(privKey)
        ProcedureReturn
    EndIf

    sbResponseBody.i = CkStringBuilder::ckCreate()
    If sbResponseBody.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkHttpResponse::ckGetBodySb(resp,sbResponseBody)
    jResp.i = CkJsonObject::ckCreate()
    If jResp.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::ckLoadSb(jResp,sbResponseBody)
    CkJsonObject::setCkEmitCompact(jResp, 0)

    ; If the status code is not equal to 201, this will display error information.
    Debug "Response Body:"
    Debug CkJsonObject::ckEmit(jResp)

    respStatusCode.i = CkHttpResponse::ckStatusCode(resp)
    Debug "Response Status Code = " + Str(respStatusCode)
    If respStatusCode <> 201
        Debug "Failed."
        CkHttpResponse::ckDispose(resp)

        CkHttp::ckDispose(http)
        CkJsonObject::ckDispose(json)
        CkPrivateKey::ckDispose(privKey)
        CkStringBuilder::ckDispose(sbResponseBody)
        CkJsonObject::ckDispose(jResp)
        ProcedureReturn
    EndIf

    CkHttpResponse::ckDispose(resp)

    ; 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": "Descriptor",
    ;      "merchantMetadata": null,
    ;      "providerMetadata": {
    ;          "providerReferenceId": null
    ;      },
    ;      "statusDetails":{
    ;          "state": "Captured",
    ;          "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

    chargeId.s = CkJsonObject::ckStringOf(jResp,"chargeId")
    chargePermissionId.s = CkJsonObject::ckStringOf(jResp,"chargePermissionId")
    chargeAmountAmount.s = CkJsonObject::ckStringOf(jResp,"chargeAmount.amount")
    chargeAmountCurrencyCode.s = CkJsonObject::ckStringOf(jResp,"chargeAmount.currencyCode")
    captureAmountAmount.s = CkJsonObject::ckStringOf(jResp,"captureAmount.amount")
    captureAmountCurrencyCode.s = CkJsonObject::ckStringOf(jResp,"captureAmount.currencyCode")
    refundedAmountAmount.s = CkJsonObject::ckStringOf(jResp,"refundedAmount.amount")
    refundedAmountCurrencyCode.s = CkJsonObject::ckStringOf(jResp,"refundedAmount.currencyCode")
    convertedAmount.s = CkJsonObject::ckStringOf(jResp,"convertedAmount")
    conversionRate.s = CkJsonObject::ckStringOf(jResp,"conversionRate")
    softDescriptor.s = CkJsonObject::ckStringOf(jResp,"softDescriptor")
    merchantMetadata.s = CkJsonObject::ckStringOf(jResp,"merchantMetadata")
    providerMetadataProviderReferenceId.s = CkJsonObject::ckStringOf(jResp,"providerMetadata.providerReferenceId")
    statusDetailsState.s = CkJsonObject::ckStringOf(jResp,"statusDetails.state")
    statusDetailsReasonCode.s = CkJsonObject::ckStringOf(jResp,"statusDetails.reasonCode")
    statusDetailsReasonDescription.s = CkJsonObject::ckStringOf(jResp,"statusDetails.reasonDescription")
    statusDetailsLastUpdatedTimestamp.s = CkJsonObject::ckStringOf(jResp,"statusDetails.lastUpdatedTimestamp")
    creationTimestamp.s = CkJsonObject::ckStringOf(jResp,"creationTimestamp")
    expirationTimestamp.s = CkJsonObject::ckStringOf(jResp,"expirationTimestamp")
    releaseEnvironment.s = CkJsonObject::ckStringOf(jResp,"releaseEnvironment")


    CkHttp::ckDispose(http)
    CkJsonObject::ckDispose(json)
    CkPrivateKey::ckDispose(privKey)
    CkStringBuilder::ckDispose(sbResponseBody)
    CkJsonObject::ckDispose(jResp)


    ProcedureReturn
EndProcedure