Delphi DLL

Amazon Pay - Get Buyer

See more Amazon Pay Examples

Amazon Pay get buyer details. Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, StringBuilder, PrivateKey, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
http: HCkHttp;
privKey: HCkPrivateKey;
publicKeyId: PWideChar;
respStatusCode: Integer;
sbResponseBody: HCkStringBuilder;
jResp: HCkJsonObject;
name: PWideChar;
email: PWideChar;
postalCode: PWideChar;
countryCode: PWideChar;
buyerId: PWideChar;
phoneNumber: PWideChar;
shippingAddressName: PWideChar;
shippingAddressAddressLine1: PWideChar;
shippingAddressAddressLine2: PWideChar;
shippingAddressAddressLine3: PWideChar;
shippingAddressCity: PWideChar;
shippingAddressCounty: PWideChar;
shippingAddressDistrict: PWideChar;
shippingAddressStateOrRegion: PWideChar;
shippingAddressCountry: PWideChar;
shippingAddressPostalCode: PWideChar;
shippingAddressPhoneNumber: PWideChar;
billingAddress: PWideChar;
primeMembershipTypes: PWideChar;

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/buyers/:buyerToken" \
// 	-X GET
// 	-H "authorization:Px2e5oHhQZ88vVhc0DO%2FsShHj8MDDg%3DEXAMPLESIGNATURE"
// 	-H "x-amz-pay-date:20201012T235046Z"

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

// 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
// Authorization

CkHttp_putAccept(http,'application/json');

respStatusCode := 0;

sbResponseBody := CkStringBuilder_Create();
success := CkHttp_SetUrlVar(http,'buyerToken','BUYER_TOKEN');
// To use the live system, replace "sandbox" with "live" in the URL passed to QuickGetSb.
// Also, make sure to use the correct region: pay-api.amazon.com, pay-api.amazon.eu, or pay-api.amazon.jp
success := CkHttp_QuickGetSb(http,'https://pay-api.amazon.eu/sandbox/v2/buyers/{$buyerToken}',sbResponseBody);

// Examine the request header we just sent..
Memo1.Lines.Add(CkHttp__lastHeader(http));

// GET /sandbox/v2/buyers/BUYER_TOKEN HTTP/1.1
// Host: pay-api.amazon.eu
// Accept: application/json
// Accept-Encoding: gzip
// x-amz-pay-date: 20250822T183232Z
// x-amz-pay-host: pay-api.amazon.eu
// x-amz-pay-region: EU
// Authorization: AMZN-PAY-RSASSA-PSS PublicKeyId=SANDBOX-AF2AGWRNIPHP2S2TUFFBKDGM, SignedHeaders=accept;x-amz-pay-date;x-amz-pay-host;x-amz-pay-region, Signature=TK8gPPid/XN0mSNWpLlCX2AXPE .... dgzxSA+ZYrHt6Yg==

if (success = False) then
  begin
    // If the LastStatus is not equal to 0, then we received a response, but it was an error response.
    respStatusCode := CkHttp_getLastStatus(http);
    if (respStatusCode <> 0) then
      begin
        Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
        // Here is a sample response body for the case where the buyer token does not exist:
        // {"reasonCode":"InvalidBuyerToken","message":"The token provided is expired, revoked, malformed, or invalid for other reasons."}

        Memo1.Lines.Add('Response body:');
        Memo1.Lines.Add(CkHttp__lastResponseBody(http));
      end
    else
      begin
        Memo1.Lines.Add(CkHttp__lastErrorText(http));
      end;
    Exit;
  end;

jResp := CkJsonObject_Create();
CkJsonObject_LoadSb(jResp,sbResponseBody);
CkJsonObject_putEmitCompact(jResp,False);

Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(CkJsonObject__emit(jResp));

respStatusCode := CkHttp_getLastStatus(http);
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
// We expect a 200 status code for success.
// Note: Some Amazon Pay API calls return 200 for success, others return 201.
if (respStatusCode <> 200) then
  begin
    Memo1.Lines.Add('Failed.');
    Exit;
  end;

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

// {
// 	"name": "John Example",
// 	"email": "johnexample@amazon.com",
// 	"postalCode": "12345",
// 	"countryCode": "US",
// 	"buyerId": "DIRECTEDBUYERID",
// 	"phoneNumber": "1234567811" // default billing address phone number
// 	"shippingAddress": {
// 		"name": "John",
// 		"addressLine1": "15th Street",
// 		"addressLine2": "",
// 		"addressLine3": "",
// 		"city": "Seattle", 
// 		"county": "",
// 		"district": "",
// 		"stateOrRegion": "WA",
// 		"country": "USA",
// 		"postalCode": "98121",
// 		"phoneNumber": "1234567899"
// 	},
// 	"billingAddress": null,
// 	"primeMembershipTypes": 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

name := CkJsonObject__stringOf(jResp,'name');
email := CkJsonObject__stringOf(jResp,'email');
postalCode := CkJsonObject__stringOf(jResp,'postalCode');
countryCode := CkJsonObject__stringOf(jResp,'countryCode');
buyerId := CkJsonObject__stringOf(jResp,'buyerId');
phoneNumber := CkJsonObject__stringOf(jResp,'phoneNumber');
shippingAddressName := CkJsonObject__stringOf(jResp,'shippingAddress.name');
shippingAddressAddressLine1 := CkJsonObject__stringOf(jResp,'shippingAddress.addressLine1');
shippingAddressAddressLine2 := CkJsonObject__stringOf(jResp,'shippingAddress.addressLine2');
shippingAddressAddressLine3 := CkJsonObject__stringOf(jResp,'shippingAddress.addressLine3');
shippingAddressCity := CkJsonObject__stringOf(jResp,'shippingAddress.city');
shippingAddressCounty := CkJsonObject__stringOf(jResp,'shippingAddress.county');
shippingAddressDistrict := CkJsonObject__stringOf(jResp,'shippingAddress.district');
shippingAddressStateOrRegion := CkJsonObject__stringOf(jResp,'shippingAddress.stateOrRegion');
shippingAddressCountry := CkJsonObject__stringOf(jResp,'shippingAddress.country');
shippingAddressPostalCode := CkJsonObject__stringOf(jResp,'shippingAddress.postalCode');
shippingAddressPhoneNumber := CkJsonObject__stringOf(jResp,'shippingAddress.phoneNumber');
billingAddress := CkJsonObject__stringOf(jResp,'billingAddress');
primeMembershipTypes := CkJsonObject__stringOf(jResp,'primeMembershipTypes');

CkHttp_Dispose(http);
CkPrivateKey_Dispose(privKey);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jResp);

end;