Pascal (Lazarus/Delphi)

Amazon SP-API Sellers Get Marketplace Participations

See more Amazon SP-API Examples

Demonstrates Amazon SP-API Sellers API -- get marketplace participations. 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.AuthAws,
  Chilkat.Rest,
  Chilkat.JsonObject,
  Chilkat.StringBuilder;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  authAws: TAuthAws;
  rest: TRest;
  bTls: Boolean;
  port: Integer;
  bAutoReconnect: Boolean;
  jsonToken: TJsonObject;
  lwa_token: string;
  sbResponse: TStringBuilder;
  uri: string;
  statusCode: Integer;
  json: TJsonObject;
  Id: string;
  CountryCode: string;
  Name: string;
  DefaultCurrencyCode: string;
  DefaultLanguageCode: string;
  DomainName: string;
  IsParticipating: Boolean;
  HasSuspendedListings: Boolean;
  i: Integer;
  count_i: Integer;

begin
  success := False;

  //  This example requires the Chilkat API to have been previously unlocked.
  //  See Global Unlock Sample for sample code.

  authAws := TAuthAws.Create;
  authAws.AccessKey := 'AWS_ACCESS_KEY';
  authAws.SecretKey := 'AWS_SECRET_KEY';
  authAws.ServiceName := 'execute-api';
  //  Use the region that is correct for your needs.
  authAws.Region := 'eu-west-1';

  rest := TRest.Create;
  bTls := True;
  port := 443;
  bAutoReconnect := True;
  //  Make sure to use the correct domain.
  //  In this example, we are using "sandbox.sellingpartnerapi-eu.amazon.com"
  success := rest.Connect('sandbox.sellingpartnerapi-eu.amazon.com',port,bTls,bAutoReconnect);
  if (success = False) then
    begin
      WriteLn(rest.LastErrorText);
      Exit;
    end;

  success := rest.SetAuthAws(authAws);

  //  Load the previously obtained LWA access token.
  //  See Fetch SP-API LWA Access Token
  jsonToken := TJsonObject.Create;
  success := jsonToken.LoadFile('qa_data/tokens/sp_api_lwa_token.json');
  if (success = False) then
    begin
      WriteLn('Failed to load LWA access token.');
      Exit;
    end;

  //  Add the x-amz-access-token request header.
  lwa_token := jsonToken.StringOf('access_token');
  rest.ClearAllHeaders();
  rest.AddHeader('x-amz-access-token',lwa_token);

  sbResponse := TStringBuilder.Create;
  uri := '/sellers/v1/marketplaceParticipations';
  success := rest.FullRequestNoBodySb('GET',uri,sbResponse);
  if (success = False) then
    begin
      WriteLn(rest.LastErrorText);
      Exit;
    end;

  //  Examine the response status.
  statusCode := rest.ResponseStatusCode;
  if (statusCode <> 200) then
    begin
      WriteLn('Response status text: ' + rest.ResponseStatusText);
      WriteLn('Response body: ');
      WriteLn(sbResponse.GetAsString());
      WriteLn('Failed.');
      Exit;
    end;

  WriteLn(sbResponse.GetAsString());

  //  If successful, gets a JSON response such as the following:

  //  {
  //    "payload": [
  //      {
  //        "marketplace": {
  //          "id": "ATVPDKIKX0DER",
  //          "countryCode": "US",
  //          "name": "Amazon.com",
  //          "defaultCurrencyCode": "USD",
  //          "defaultLanguageCode": "en_US",
  //          "domainName": "www.amazon.com"
  //        },
  //        "participation": {
  //          "isParticipating": true,
  //          "hasSuspendedListings": false
  //        }
  //      }
  //    ]
  //  }

  //  Use this online tool to generate parsing code from sample JSON: 
  //  Generate Parsing Code from JSON

  json := TJsonObject.Create;

  json.LoadSb(sbResponse);

  i := 0;
  count_i := json.SizeOfArray('payload');
  while i < count_i do
    begin
      json.I := i;
      Id := json.StringOf('payload[i].marketplace.id');
      CountryCode := json.StringOf('payload[i].marketplace.countryCode');
      Name := json.StringOf('payload[i].marketplace.name');
      DefaultCurrencyCode := json.StringOf('payload[i].marketplace.defaultCurrencyCode');
      DefaultLanguageCode := json.StringOf('payload[i].marketplace.defaultLanguageCode');
      DomainName := json.StringOf('payload[i].marketplace.domainName');
      IsParticipating := json.BoolOf('payload[i].participation.isParticipating');
      HasSuspendedListings := json.BoolOf('payload[i].participation.hasSuspendedListings');
      i := i + 1;
    end;

  WriteLn('Success!');


  authAws.Free;
  rest.Free;
  jsonToken.Free;
  sbResponse.Free;
  json.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.