Delphi DLL
Delphi DLL
Amazon Pay - Complete Checkout Session
See more Amazon Pay Examples
Complete Checkout Session after the buyer returns to checkoutResultReturnUrl to finalize the paymentIntent.Chilkat Delphi DLL Downloads
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, StringBuilder, PrivateKey, HttpResponse, JsonObject;
...
procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
http: HCkHttp;
json: HCkJsonObject;
privKey: HCkPrivateKey;
publicKeyId: PWideChar;
resp: HCkHttpResponse;
sbResponseBody: HCkStringBuilder;
jResp: HCkJsonObject;
respStatusCode: Integer;
nullVal: Boolean;
checkoutSessionId: PWideChar;
webCheckoutDetails: PWideChar;
chargePermissionType: PWideChar;
recurringMetadata: PWideChar;
productType: PWideChar;
paymentDetails: PWideChar;
merchantMetadata: PWideChar;
supplementaryData: PWideChar;
buyer: PWideChar;
billingAddress: PWideChar;
statusDetailsState: PWideChar;
statusDetailsReasonCode: PWideChar;
statusDetailsReasonDescription: PWideChar;
statusDetailsLastUpdatedTimestamp: PWideChar;
shippingAddress: PWideChar;
platformId: PWideChar;
chargePermissionId: PWideChar;
chargeId: PWideChar;
creationTimestamp: PWideChar;
expirationTimestamp: PWideChar;
storeId: PWideChar;
deliverySpecifications: PWideChar;
providerMetadata: PWideChar;
releaseEnvironment: PWideChar;
i: Integer;
count_i: Integer;
begin
success := False;
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
http := CkHttp_Create();
// Implements the following CURL command:
// curl "https://pay-api.amazon.com/:version/checkoutSessions/:checkoutSessionId/complete" \
// -X POST
// -H "authorization:Px2e5oHhQZ88vVhc0DO%2FsShHj8MDDg%3DEXAMPLESIGNATURE"
// -H "x-amz-pay-date:20201012T235046Z"
// -H "x-amz-pay-idempotency-key:AVLo5tI10BHgEk2jEXAMPLEKEY"
// -d '{
// "chargeAmount": {
// "amount": "14.00",
// "currencyCode": "USD"
// }
// }'
// 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.
// {
// "chargeAmount": {
// "amount": "14.00",
// "currencyCode": "USD"
// }
// }
json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'chargeAmount.amount','14.00');
CkJsonObject_UpdateString(json,'chargeAmount.currencyCode','USD');
// 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 := CkPrivateKey_Create();
success := CkPrivateKey_LoadPemFile(privKey,'C:/someDir/myAmazonPayPrivateKey.pem');
if (success = False) then
begin
Memo1.Lines.Add(CkPrivateKey__lastErrorText(privKey));
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 := CkHttp_SetAuthPrivateKey(http,publicKeyId,privKey);
if (success = False) then
begin
Memo1.Lines.Add(CkHttp__lastErrorText(http));
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
CkHttp_putAccept(http,'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
success := CkHttp_SetUrlVar(http,'sessionId','62b7d028-6c7c-4a43-b077-3897dff27c5b');
resp := CkHttpResponse_Create();
success := CkHttp_HttpJson(http,'POST','https://pay-api.amazon.eu/sandbox/v2/checkoutSessions/{$sessionId}/complete',json,'application/json',resp);
if (success = False) then
begin
Memo1.Lines.Add(CkHttp__lastErrorText(http));
Exit;
end;
sbResponseBody := CkStringBuilder_Create();
CkHttpResponse_GetBodySb(resp,sbResponseBody);
jResp := CkJsonObject_Create();
CkJsonObject_LoadSb(jResp,sbResponseBody);
CkJsonObject_putEmitCompact(jResp,False);
// If the status code is not equal to 200, this will display error information.
Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(CkJsonObject__emit(jResp));
respStatusCode := CkHttpResponse_getStatusCode(resp);
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode <> 200) then
begin
// A sample response body for the case where the session ID does not exist:
// {
// "reasonCode": "ResourceNotFound",
// "message": "Resource you are trying to access is not available. Requested path '/sandbox/v2/checkoutSessions/bd504926-f659-4ad7-a1a9-9a747aaf5275'"
// }
// Another sample failure response (status code = 422)
// {
// "reasonCode": "InvalidCheckoutSessionStatus",
// "message": "You tried to call an operation on a Checkout Session that is in a state where that operation is not allowed"
// }
Memo1.Lines.Add('Failed.');
Exit;
end;
// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)
// {
// "checkoutSessionId": "bd504926-f659-4ad7-a1a9-9a747aaf5275",
// "webCheckoutDetails": null,
// "chargePermissionType": "OneTime",
// "recurringMetadata": null,
// "productType": null,
// "paymentDetails": null,
// "merchantMetadata": null,
// "supplementaryData": null,
// "buyer": null,
// "billingAddress": null,
// "paymentPreferences": [
// null
// ],
// "statusDetails": {
// "state": "Completed",
// "reasonCode": null,
// "reasonDescription": null,
// "lastUpdatedTimestamp": "20191015T204327Z"
// },
// "shippingAddress": null,
// "platformId": null,
// "chargePermissionId": "S01-5105180-3221187",
// "chargeId": "S01-5105180-3221187-C056351",
// "constraints": [
// null
// ],
// "creationTimestamp": "20191015T204313Z",
// "expirationTimestamp": null,
// "storeId": null,
// "deliverySpecifications": null,
// "providerMetadata": null,
// "releaseEnvironment": null
// }
// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON
checkoutSessionId := CkJsonObject__stringOf(jResp,'checkoutSessionId');
webCheckoutDetails := CkJsonObject__stringOf(jResp,'webCheckoutDetails');
chargePermissionType := CkJsonObject__stringOf(jResp,'chargePermissionType');
recurringMetadata := CkJsonObject__stringOf(jResp,'recurringMetadata');
productType := CkJsonObject__stringOf(jResp,'productType');
paymentDetails := CkJsonObject__stringOf(jResp,'paymentDetails');
merchantMetadata := CkJsonObject__stringOf(jResp,'merchantMetadata');
supplementaryData := CkJsonObject__stringOf(jResp,'supplementaryData');
buyer := CkJsonObject__stringOf(jResp,'buyer');
billingAddress := CkJsonObject__stringOf(jResp,'billingAddress');
statusDetailsState := CkJsonObject__stringOf(jResp,'statusDetails.state');
statusDetailsReasonCode := CkJsonObject__stringOf(jResp,'statusDetails.reasonCode');
statusDetailsReasonDescription := CkJsonObject__stringOf(jResp,'statusDetails.reasonDescription');
statusDetailsLastUpdatedTimestamp := CkJsonObject__stringOf(jResp,'statusDetails.lastUpdatedTimestamp');
shippingAddress := CkJsonObject__stringOf(jResp,'shippingAddress');
platformId := CkJsonObject__stringOf(jResp,'platformId');
chargePermissionId := CkJsonObject__stringOf(jResp,'chargePermissionId');
chargeId := CkJsonObject__stringOf(jResp,'chargeId');
creationTimestamp := CkJsonObject__stringOf(jResp,'creationTimestamp');
expirationTimestamp := CkJsonObject__stringOf(jResp,'expirationTimestamp');
storeId := CkJsonObject__stringOf(jResp,'storeId');
deliverySpecifications := CkJsonObject__stringOf(jResp,'deliverySpecifications');
providerMetadata := CkJsonObject__stringOf(jResp,'providerMetadata');
releaseEnvironment := CkJsonObject__stringOf(jResp,'releaseEnvironment');
i := 0;
count_i := CkJsonObject_SizeOfArray(jResp,'paymentPreferences');
while i < count_i do
begin
CkJsonObject_putI(jResp,i);
nullVal := CkJsonObject_IsNullOf(jResp,'paymentPreferences[i]');
i := i + 1;
end;
i := 0;
count_i := CkJsonObject_SizeOfArray(jResp,'constraints');
while i < count_i do
begin
CkJsonObject_putI(jResp,i);
nullVal := CkJsonObject_IsNullOf(jResp,'constraints[i]');
i := i + 1;
end;
CkHttp_Dispose(http);
CkJsonObject_Dispose(json);
CkPrivateKey_Dispose(privKey);
CkHttpResponse_Dispose(resp);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jResp);
end;