Pascal (Lazarus/Delphi)
Pascal (Lazarus/Delphi)
Amazon Pay - Complete Checkout Session
See more Amazon Pay Examples
Complete Checkout Session after the buyer returns to checkoutResultReturnUrl to finalize the paymentIntent.Chilkat Pascal (Lazarus/Delphi) Downloads
program ChilkatDemo;
// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.
{$IFDEF FPC}
{$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}
uses
{$IFDEF UNIX}
cthreads,
{$ENDIF}
SysUtils,
CkDllLoader,
Chilkat.Http,
Chilkat.StringBuilder,
Chilkat.PrivateKey,
Chilkat.HttpResponse,
Chilkat.JsonObject;
// ---------------------------------------------------------------------------
procedure RunDemo;
var
success: Boolean;
http: THttp;
json: TJsonObject;
privKey: TPrivateKey;
publicKeyId: string;
resp: THttpResponse;
sbResponseBody: TStringBuilder;
jResp: TJsonObject;
respStatusCode: Integer;
nullVal: Boolean;
checkoutSessionId: string;
webCheckoutDetails: string;
chargePermissionType: string;
recurringMetadata: string;
productType: string;
paymentDetails: string;
merchantMetadata: string;
supplementaryData: string;
buyer: string;
billingAddress: string;
statusDetailsState: string;
statusDetailsReasonCode: string;
statusDetailsReasonDescription: string;
statusDetailsLastUpdatedTimestamp: string;
shippingAddress: string;
platformId: string;
chargePermissionId: string;
chargeId: string;
creationTimestamp: string;
expirationTimestamp: string;
storeId: string;
deliverySpecifications: string;
providerMetadata: string;
releaseEnvironment: string;
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 := THttp.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 := TJsonObject.Create;
json.UpdateString('chargeAmount.amount','14.00');
json.UpdateString('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 := TPrivateKey.Create;
success := privKey.LoadPemFile('C:/someDir/myAmazonPayPrivateKey.pem');
if (success = False) then
begin
WriteLn(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);
if (success = False) then
begin
WriteLn(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
success := http.SetUrlVar('sessionId','62b7d028-6c7c-4a43-b077-3897dff27c5b');
resp := THttpResponse.Create;
success := http.HttpJson('POST','https://pay-api.amazon.eu/sandbox/v2/checkoutSessions/{$sessionId}/complete',json,'application/json',resp);
if (success = False) then
begin
WriteLn(http.LastErrorText);
Exit;
end;
sbResponseBody := TStringBuilder.Create;
resp.GetBodySb(sbResponseBody);
jResp := TJsonObject.Create;
jResp.LoadSb(sbResponseBody);
jResp.EmitCompact := False;
// If the status code is not equal to 200, this will display error information.
WriteLn('Response Body:');
WriteLn(jResp.Emit());
respStatusCode := resp.StatusCode;
WriteLn('Response Status Code = ' + 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"
// }
WriteLn('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 := jResp.StringOf('checkoutSessionId');
webCheckoutDetails := jResp.StringOf('webCheckoutDetails');
chargePermissionType := jResp.StringOf('chargePermissionType');
recurringMetadata := jResp.StringOf('recurringMetadata');
productType := jResp.StringOf('productType');
paymentDetails := jResp.StringOf('paymentDetails');
merchantMetadata := jResp.StringOf('merchantMetadata');
supplementaryData := jResp.StringOf('supplementaryData');
buyer := jResp.StringOf('buyer');
billingAddress := jResp.StringOf('billingAddress');
statusDetailsState := jResp.StringOf('statusDetails.state');
statusDetailsReasonCode := jResp.StringOf('statusDetails.reasonCode');
statusDetailsReasonDescription := jResp.StringOf('statusDetails.reasonDescription');
statusDetailsLastUpdatedTimestamp := jResp.StringOf('statusDetails.lastUpdatedTimestamp');
shippingAddress := jResp.StringOf('shippingAddress');
platformId := jResp.StringOf('platformId');
chargePermissionId := jResp.StringOf('chargePermissionId');
chargeId := jResp.StringOf('chargeId');
creationTimestamp := jResp.StringOf('creationTimestamp');
expirationTimestamp := jResp.StringOf('expirationTimestamp');
storeId := jResp.StringOf('storeId');
deliverySpecifications := jResp.StringOf('deliverySpecifications');
providerMetadata := jResp.StringOf('providerMetadata');
releaseEnvironment := jResp.StringOf('releaseEnvironment');
i := 0;
count_i := jResp.SizeOfArray('paymentPreferences');
while i < count_i do
begin
jResp.I := i;
nullVal := jResp.IsNullOf('paymentPreferences[i]');
i := i + 1;
end;
i := 0;
count_i := jResp.SizeOfArray('constraints');
while i < count_i do
begin
jResp.I := i;
nullVal := jResp.IsNullOf('constraints[i]');
i := i + 1;
end;
http.Free;
json.Free;
privKey.Free;
resp.Free;
sbResponseBody.Free;
jResp.Free;
end;
// ---------------------------------------------------------------------------
begin
try
RunDemo;
except
on E: Exception do
WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
end;
WriteLn;
{$IFDEF MSWINDOWS}
WriteLn('Press Enter to exit...');
ReadLn;
{$ENDIF}
end.