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Pascal (Lazarus/Delphi)

Amazon Pay - Update Charge Permission

See more Amazon Pay Examples

Update the Charge Permission with your external order metadata or the recurringMetadata.

Chilkat Pascal (Lazarus/Delphi) Downloads

Pascal (Lazarus/Delphi)
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;
  sbRequestBody: TStringBuilder;
  privKey: TPrivateKey;
  publicKeyId: string;
  resp: THttpResponse;
  sbResponseBody: TStringBuilder;
  jResp: TJsonObject;
  respStatusCode: Integer;
  paymentDescriptor: string;
  chargePermissionId: string;
  chargePermissionReferenceId: string;
  buyerBuyerId: string;
  buyerName: string;
  buyerEmail: string;
  buyerPhoneNumber: string;
  buyerPrimeMembershipTypes: string;
  releaseEnvironment: string;
  shippingAddressName: string;
  shippingAddressAddressLine1: string;
  shippingAddressAddressLine2: string;
  shippingAddressAddressLine3: string;
  shippingAddressCity: string;
  shippingAddressCounty: string;
  shippingAddressDistrict: string;
  shippingAddressStateOrRegion: string;
  shippingAddressPostalCode: string;
  shippingAddressCountryCode: string;
  shippingAddressPhoneNumber: string;
  billingAddressName: string;
  billingAddressAddressLine1: string;
  billingAddressAddressLine2: string;
  billingAddressAddressLine3: string;
  billingAddressCity: string;
  billingAddressCounty: string;
  billingAddressDistrict: string;
  billingAddressStateOrRegion: string;
  billingAddressPostalCode: string;
  billingAddressCountryCode: string;
  billingAddressPhoneNumber: string;
  statusDetailsState: string;
  statusDetailsReasons: string;
  statusDetailsLastUpdatedTimestamp: string;
  creationTimestamp: string;
  expirationTimestamp: string;
  merchantMetadataMerchantReferenceId: string;
  merchantMetadataMerchantStoreName: string;
  merchantMetadataNoteToBuyer: string;
  merchantMetadataCustomInformation: string;
  platformId: string;
  limitsAmountLimitAmount: string;
  limitsAmountLimitCurrencyCode: string;
  limitsAmountBalanceAmount: string;
  limitsAmountBalanceCurrencyCode: string;
  presentmentCurrency: 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/chargePermissions/:chargePermissionId" \
  //  -X PATCH
  //  -H "authorization:Px2e5oHhQZ88vVhc0DO%2FsShHj8MDDg%3DEXAMPLESIGNATURE"
  //  -H "x-amz-pay-date:20201012T235046Z"
  //  -d '{
  //      "merchantMetadata": {
  //          "merchantReferenceId": "32-41-323141-32",
  //          "merchantStoreName": "AmazonTestStoreFront",
  //          "noteToBuyer": "Some Note to buyer",
  //          "customInformation": ""    
  //       }  
  //  }'

  //  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.

  //  {
  //      "merchantMetadata": {
  //          "merchantReferenceId": "32-41-323141-32",
  //          "merchantStoreName": "AmazonTestStoreFront",
  //          "noteToBuyer": "Some Note to buyer",
  //          "customInformation": ""    
  //       }  
  //  }

  json := TJsonObject.Create;
  json.UpdateString('merchantMetadata.merchantReferenceId','32-41-323141-32');
  json.UpdateString('merchantMetadata.merchantStoreName','AmazonTestStoreFront');
  json.UpdateString('merchantMetadata.noteToBuyer','Some Note to buyer');
  json.UpdateString('merchantMetadata.customInformation','');

  sbRequestBody := TStringBuilder.Create;
  json.EmitSb(sbRequestBody);

  //  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
  //  Authorization

  http.Accept := 'application/json';

  success := http.SetUrlVar('chargePermissionId','P21-1111111-1111111');
  //  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
  resp := THttpResponse.Create;
  success := http.HttpSb('PATCH','https://pay-api.amazon.eu/sandbox/v2/chargePermissions/{$chargePermissionId}',sbRequestBody,'utf-8','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
      WriteLn('Failed.');
      Exit;
    end;

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

  //  {
  //      "chargePermissionId": "chargePermission-1",
  //      "chargePermissionReferenceId": null,
  //      "buyer": {
  //          "buyerId": "buyerId",
  //          "name": "name-1",
  //          "email": "name@amazon.com",
  //          "phoneNumber": "800-000-0000",
  //          "primeMembershipTypes": null
  //      },
  //      "releaseEnvironment": "Live",
  //      "shippingAddress": {  // Null for PayOnly product type
  //          "name": "Work",
  //          "addressLine1": "440 Terry Ave",
  //          "addressLine2": "",
  //          "addressLine3": "",
  //          "city": "Seattle",
  //          "county": "King",
  //          "district": "Seattle",
  //          "stateOrRegion": "WA",
  //          "postalCode": "98121",
  //          "countryCode": "US",
  //          "phoneNumber": "800-000-0000"
  //      },
  //      "billingAddress": {  // Only available in EU or for PayOnly product type
  //          "name": "Work",
  //          "addressLine1": "440 Terry Ave",
  //          "addressLine2": "",
  //          "addressLine3": "",
  //          "city": "Seattle",
  //          "county": "King",
  //          "district": "Seattle",
  //          "stateOrRegion": "WA",
  //          "postalCode": "98121",
  //          "countryCode": "US",
  //          "phoneNumber": "800-000-0000"
  //      },
  //      "paymentPreferences": [
  //      {
  //          "paymentDescriptor": null
  //      }],
  //      "statusDetails": {
  //          "state": "Chargeable",
  //          "reasons": null,
  //          "lastUpdatedTimestamp": "20190714T155300Z"
  //      },
  //      "creationTimestamp": "20190714T155300Z",
  //      "expirationTimestamp": "20190715T155300Z",
  //      "merchantMetadata": {
  //          "merchantReferenceId": "123-77-876", 
  //          "merchantStoreName": "AmazonTestStoreFront",
  //          "noteToBuyer": "merchantNoteForBuyer",
  //          "customInformation": "This is custom information"  
  //      },
  //      "platformId": "SPId",
  //      "limits": {
  //          "amountLimit": {
  //              "amount": "14.00",
  //              "currencyCode": "USD"
  //          },
  //          "amountBalance": {
  //              "amount": "14.00",
  //              "currencyCode": "USD"
  //          }
  //      },
  //      "presentmentCurrency": "USD"
  //  }

  //  Sample code for parsing the JSON response...
  //  Use the following online tool to generate parsing code from sample JSON:
  //  Generate Parsing Code from JSON

  chargePermissionId := jResp.StringOf('chargePermissionId');
  chargePermissionReferenceId := jResp.StringOf('chargePermissionReferenceId');
  buyerBuyerId := jResp.StringOf('buyer.buyerId');
  buyerName := jResp.StringOf('buyer.name');
  buyerEmail := jResp.StringOf('buyer.email');
  buyerPhoneNumber := jResp.StringOf('buyer.phoneNumber');
  buyerPrimeMembershipTypes := jResp.StringOf('buyer.primeMembershipTypes');
  releaseEnvironment := jResp.StringOf('releaseEnvironment');
  shippingAddressName := jResp.StringOf('shippingAddress.name');
  shippingAddressAddressLine1 := jResp.StringOf('shippingAddress.addressLine1');
  shippingAddressAddressLine2 := jResp.StringOf('shippingAddress.addressLine2');
  shippingAddressAddressLine3 := jResp.StringOf('shippingAddress.addressLine3');
  shippingAddressCity := jResp.StringOf('shippingAddress.city');
  shippingAddressCounty := jResp.StringOf('shippingAddress.county');
  shippingAddressDistrict := jResp.StringOf('shippingAddress.district');
  shippingAddressStateOrRegion := jResp.StringOf('shippingAddress.stateOrRegion');
  shippingAddressPostalCode := jResp.StringOf('shippingAddress.postalCode');
  shippingAddressCountryCode := jResp.StringOf('shippingAddress.countryCode');
  shippingAddressPhoneNumber := jResp.StringOf('shippingAddress.phoneNumber');
  billingAddressName := jResp.StringOf('billingAddress.name');
  billingAddressAddressLine1 := jResp.StringOf('billingAddress.addressLine1');
  billingAddressAddressLine2 := jResp.StringOf('billingAddress.addressLine2');
  billingAddressAddressLine3 := jResp.StringOf('billingAddress.addressLine3');
  billingAddressCity := jResp.StringOf('billingAddress.city');
  billingAddressCounty := jResp.StringOf('billingAddress.county');
  billingAddressDistrict := jResp.StringOf('billingAddress.district');
  billingAddressStateOrRegion := jResp.StringOf('billingAddress.stateOrRegion');
  billingAddressPostalCode := jResp.StringOf('billingAddress.postalCode');
  billingAddressCountryCode := jResp.StringOf('billingAddress.countryCode');
  billingAddressPhoneNumber := jResp.StringOf('billingAddress.phoneNumber');
  statusDetailsState := jResp.StringOf('statusDetails.state');
  statusDetailsReasons := jResp.StringOf('statusDetails.reasons');
  statusDetailsLastUpdatedTimestamp := jResp.StringOf('statusDetails.lastUpdatedTimestamp');
  creationTimestamp := jResp.StringOf('creationTimestamp');
  expirationTimestamp := jResp.StringOf('expirationTimestamp');
  merchantMetadataMerchantReferenceId := jResp.StringOf('merchantMetadata.merchantReferenceId');
  merchantMetadataMerchantStoreName := jResp.StringOf('merchantMetadata.merchantStoreName');
  merchantMetadataNoteToBuyer := jResp.StringOf('merchantMetadata.noteToBuyer');
  merchantMetadataCustomInformation := jResp.StringOf('merchantMetadata.customInformation');
  platformId := jResp.StringOf('platformId');
  limitsAmountLimitAmount := jResp.StringOf('limits.amountLimit.amount');
  limitsAmountLimitCurrencyCode := jResp.StringOf('limits.amountLimit.currencyCode');
  limitsAmountBalanceAmount := jResp.StringOf('limits.amountBalance.amount');
  limitsAmountBalanceCurrencyCode := jResp.StringOf('limits.amountBalance.currencyCode');
  presentmentCurrency := jResp.StringOf('presentmentCurrency');
  i := 0;
  count_i := jResp.SizeOfArray('paymentPreferences');
  while i < count_i do
    begin
      jResp.I := i;
      paymentDescriptor := jResp.StringOf('paymentPreferences[i].paymentDescriptor');
      i := i + 1;
    end;



  http.Free;
  json.Free;
  sbRequestBody.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.