Delphi ActiveX

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. Delphi ActiveX

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
http: TChilkatHttp;
json: TChilkatJsonObject;
privKey: TPrivateKey;
publicKeyId: WideString;
resp: TChilkatHttpResponse;
sbResponseBody: TChilkatStringBuilder;
jResp: TChilkatJsonObject;
respStatusCode: Integer;
chargeId: WideString;
chargePermissionId: WideString;
chargeAmountAmount: WideString;
chargeAmountCurrencyCode: WideString;
captureAmountAmount: WideString;
captureAmountCurrencyCode: WideString;
refundedAmountAmount: WideString;
refundedAmountCurrencyCode: WideString;
convertedAmount: WideString;
conversionRate: WideString;
softDescriptor: WideString;
merchantMetadata: WideString;
providerMetadataProviderReferenceId: WideString;
statusDetailsState: WideString;
statusDetailsReasonCode: WideString;
statusDetailsReasonDescription: WideString;
statusDetailsLastUpdatedTimestamp: WideString;
creationTimestamp: WideString;
expirationTimestamp: WideString;
releaseEnvironment: WideString;

begin
success := 0;

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

http := TChilkatHttp.Create(Self);

// 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 := TChilkatJsonObject.Create(Self);
json.UpdateString('chargePermissionId','P21-1111111-1111111');
json.UpdateString('chargeAmount.amount','14.00');
json.UpdateString('chargeAmount.currencyCode','USD');
json.UpdateBool('captureNow',1);
json.UpdateString('softDescriptor','Descriptor');
json.UpdateBool('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 := TPrivateKey.Create(Self);
success := privKey.LoadPemFile('C:/someDir/myAmazonPayPrivateKey.pem');
if (success = 0) then
  begin
    Memo1.Lines.Add(privKey.LastErrorText);
    Exit;
  end;

// 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 := 'SANDBOX-AHEGSJCM3L2S637RBGABLAFW';
success := http.SetAuthPrivateKey(publicKeyId,privKey.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

// 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

http.Accept := 'application/json';

// To use the live system, replace "sandbox" with "live" in the URL passed to HttpJson.
// Also, make sure to use the correct region: pay-api.amazon.com, pay-api.amazon.eu, or pay-api.amazon.jp
resp := TChilkatHttpResponse.Create(Self);
success := http.HttpJson('POST','https://pay-api.amazon.eu/sandbox/v2/charges/',json.ControlInterface,'application/json',resp.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

sbResponseBody := TChilkatStringBuilder.Create(Self);
resp.GetBodySb(sbResponseBody.ControlInterface);
jResp := TChilkatJsonObject.Create(Self);
jResp.LoadSb(sbResponseBody.ControlInterface);
jResp.EmitCompact := 0;

// If the status code is not equal to 201, this will display error information.
Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(jResp.Emit());

respStatusCode := resp.StatusCode;
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode <> 201) then
  begin
    Memo1.Lines.Add('Failed.');
    Exit;
  end;

// 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 := jResp.StringOf('chargeId');
chargePermissionId := jResp.StringOf('chargePermissionId');
chargeAmountAmount := jResp.StringOf('chargeAmount.amount');
chargeAmountCurrencyCode := jResp.StringOf('chargeAmount.currencyCode');
captureAmountAmount := jResp.StringOf('captureAmount.amount');
captureAmountCurrencyCode := jResp.StringOf('captureAmount.currencyCode');
refundedAmountAmount := jResp.StringOf('refundedAmount.amount');
refundedAmountCurrencyCode := jResp.StringOf('refundedAmount.currencyCode');
convertedAmount := jResp.StringOf('convertedAmount');
conversionRate := jResp.StringOf('conversionRate');
softDescriptor := jResp.StringOf('softDescriptor');
merchantMetadata := jResp.StringOf('merchantMetadata');
providerMetadataProviderReferenceId := jResp.StringOf('providerMetadata.providerReferenceId');
statusDetailsState := jResp.StringOf('statusDetails.state');
statusDetailsReasonCode := jResp.StringOf('statusDetails.reasonCode');
statusDetailsReasonDescription := jResp.StringOf('statusDetails.reasonDescription');
statusDetailsLastUpdatedTimestamp := jResp.StringOf('statusDetails.lastUpdatedTimestamp');
creationTimestamp := jResp.StringOf('creationTimestamp');
expirationTimestamp := jResp.StringOf('expirationTimestamp');
releaseEnvironment := jResp.StringOf('releaseEnvironment');
end;