Pascal (Lazarus/Delphi)

WooCommerce OAuth 1.0a “one-legged” Authentication

See more REST Examples

Demonstrates how to use OAuth 1.0a "one legged" authentication with Woo Commerce. 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.OAuth1,
  Chilkat.Rest;

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

procedure RunDemo;
var
  success: Boolean;
  oauth1: TOAuth1;
  rest: TRest;
  bUseQueryParams: Boolean;
  bTls: Boolean;
  port: Integer;
  bAutoReconnect: Boolean;
  responseJson: string;

begin
  success := False;

  //  Demonstrates how to do OAuth1 authentication for a Wordpress site using Woo Commerce.

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

  //  Prepare an OAuth 1.0 object for use with the Chilkat REST API.
  oauth1 := TOAuth1.Create;
  oauth1.ConsumerKey := 'WOO_COMMERCE_CONSUMER_KEY';
  oauth1.ConsumerSecret := 'WOO_COMMERCE_CONSUMER_SECRET';

  //  The signature method can be HMAC-SHA1 or HMAC-SHA256
  oauth1.SignatureMethod := 'HMAC-SHA256';

  //  The OauthUrl property will need to be updated each time a request is sent.
  //  The domain here must match the domain passed to the Connect method (below).
  //  The domain must be exact.  For example, "www.your-wordpress-site.com" vs. "your-wordpress-site.com".
  //  One might work while the other does not..
  oauth1.OauthUrl := 'http://your-wordpress-site.com/wc-api/v3/orders';

  //  The OAuthMethod property will be set automatically when the REST request is sent.
  //  Setting it here is not actually necessary.
  oauth1.OauthMethod := 'GET';

  //  Generate an initial nonce so that Chilkat knows the desired size of the nonce.
  success := oauth1.GenNonce(32);

  rest := TRest.Create;

  //  Tell the REST object to use the OAuth1 object for authentication.
  //  Also, indicate that the OAuth authentication parameters should be query parameters
  //  and not located within the Authorization header.
  bUseQueryParams := True;
  success := rest.SetAuthOAuth1(oauth1,bUseQueryParams);

  //  Make the initial connection (without sending a request yet) to the WooCommerce endpoint at your Wordpress blog.
  bTls := False;
  port := 80;
  bAutoReconnect := True;
  success := rest.Connect('your-wordpress-site.com',port,bTls,bAutoReconnect);
  if (success <> True) then
    begin
      WriteLn(rest.LastErrorText);
      Exit;
    end;

  //  Send a GET request to list orders.

  //  When the request is sent, the OAuth1 object's Timestamp and Nonce properties are automatically
  //  regenerated.  Also, the OAuth1 object's OauthMethod property is automatically set to the HTTP method
  //  used for the request (in this case it is "GET").
  responseJson := rest.FullRequestNoBody('GET','/wc-api/v3/orders');
  if (rest.LastMethodSuccess <> True) then
    begin
      WriteLn(rest.LastErrorText);
      Exit;
    end;

  //  When successful, the response status code will equal 200.
  if (rest.ResponseStatusCode <> 200) then
    begin
      //  Examine the request/response to see what happened.
      WriteLn('response status code = ' + rest.ResponseStatusCode);
      WriteLn('response status text = ' + rest.ResponseStatusText);
      WriteLn('response header: ' + rest.ResponseHeader);
      WriteLn('response body (if any): ' + responseJson);
      WriteLn('---');
      WriteLn('LastRequestStartLine: ' + rest.LastRequestStartLine);
      WriteLn('LastRequestHeader: ' + rest.LastRequestHeader);
      Exit;
    end;

  WriteLn(responseJson);
  WriteLn('Success.');


  oauth1.Free;
  rest.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.