Pascal (Lazarus/Delphi)

Amazon Pay - Create Delivery Tracker

See more Amazon Pay Examples

Create a Delivery Tracker once an order has been shipped and a tracking code has been generated. 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;
  privKey: TPrivateKey;
  publicKeyId: string;
  resp: THttpResponse;
  sbResponseBody: TStringBuilder;
  jResp: TJsonObject;
  respStatusCode: Integer;
  trackingNumber: string;
  carrierCode: string;
  amazonOrderReferenceId: 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 POST:

  //  POST /:version/deliveryTrackers HTTP/1.1
  //  Host: pay-api.amazon.com
  //  Accept: application/json
  //  Authorization: AMZN-PAY-RSASSA-PSS PublicKeyId=f4fc06fc-c5a7-11e7-abc4-cec278b6b50a, SignedHeaders=content-type;x-amz-pay-date, Signature=4164128ec5d1b9da1700167ab2ccda8125f472c8bb9de447cebf5d741ee317c8       
  //  X-Amz-Pay-Date: 20190305T024410Z
  //  Content-type: application/json
  //  
  //  {
  //      "amazonOrderReferenceId" : "P00-0000000-0000000",
  //      "deliveryDetails" : [{
  //      "trackingNumber" : "1Z999AA10123456784",
  //      "carrierCode" : "UPS"
  //    }]
  //  }

  //  Use the following online tool to generate HTTP code from a CURL command
  //  Convert a Raw HTTP Request to 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.

  //  {
  //      "amazonOrderReferenceId" : "P00-0000000-0000000",
  //      "deliveryDetails" : [{
  //      "trackingNumber" : "1Z999AA10123456784",
  //      "carrierCode" : "UPS"
  //    }]
  //  }

  json := TJsonObject.Create;
  json.UpdateString('amazonOrderReferenceId','P00-0000000-0000000');
  json.UpdateString('deliveryDetails[0].trackingNumber','1Z999AA10123456784');
  json.UpdateString('deliveryDetails[0].carrierCode','UPS');

  //  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
  resp := THttpResponse.Create;
  success := http.HttpJson('POST','https://pay-api.amazon.eu/sandbox/v2/deliveryTrackers',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
      WriteLn('Failed.');
      Exit;
    end;

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

  //  {
  //      "amazonOrderReferenceId": "P00-0000000-0000000",
  //      "deliveryDetails": [{
  //          "trackingNumber": "1Z999AA10123456784",
  //          "carrierCode": "UPS"
  //      }]
  //  }

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

  amazonOrderReferenceId := jResp.StringOf('amazonOrderReferenceId');
  i := 0;
  count_i := jResp.SizeOfArray('deliveryDetails');
  while i < count_i do
    begin
      jResp.I := i;
      trackingNumber := jResp.StringOf('deliveryDetails[i].trackingNumber');
      carrierCode := jResp.StringOf('deliveryDetails[i].carrierCode');
      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.