Pascal (Lazarus/Delphi)

Refresh Wish for Merchants OAuth2 Access Token

See more OAuth2 Examples

Demonstrates how to refresh a Wish OAuth2 access token.

Note: This example requires Chilkat v9.5.0.85.

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.OAuth2,
  Chilkat.StringBuilder,
  Chilkat.JsonObject;

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

procedure RunDemo;
var
  success: Boolean;
  jsonToken: TJsonObject;
  oauth2: TOAuth2;
  sbJson: TStringBuilder;

begin
  success := False;

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

  //  See Get Wish OAuth2 Access Token 
  //  for sample code showing how to obtain a Wish access token for desktop apps.

  //  This example assumes we previously obtained an OAuth2 access token for Wish.

  jsonToken := TJsonObject.Create;
  success := jsonToken.LoadFile('qa_data/tokens/wish.json');
  if (success <> True) then
    begin
      WriteLn('Failed to load wish.json');
      Exit;
    end;

  //  The access token JSON looks something like this:

  //  {
  //    "message": "",
  //    "code": 0,
  //    "data": {
  //      "access_token": "15af1c191c1243b029bc1660b5c08ce7",
  //      "scopes": [
  //        "epc:read",
  //        "epc:write",
  //        "fbs:read",
  //        "fbs:write",
  //        "fbw:read",
  //        "fbw:write",
  //        "infractions:read",
  //        "infractions:write",
  //        "insurance:read",
  //        "insurance:write",
  //        "loans:read",
  //        "loans:write",
  //        "merchant:read",
  //        "merchant:write",
  //        "notifications:read",
  //        "notifications:write",
  //        "orders:read",
  //        "orders:write",
  //        "payments:read",
  //        "payments:write",
  //        "penalties:read",
  //        "penalties:write",
  //        "product_boost:read",
  //        "product_boost:write",
  //        "products:read",
  //        "products:write",
  //        "ratings:read",
  //        "ratings:write",
  //        "returns:read",
  //        "returns:write",
  //        "tickets:read",
  //        "tickets:write"
  //      ],
  //      "merchant_id": "5eb3f605178f5be2c784fa02",
  //      "expiry_time": "2020-12-17T16:55:09.594+00:00",
  //      "refresh_token": "55a38e44df674a1e859891624b2c4c23"
  //    }
  //  }

  oauth2 := TOAuth2.Create;

  //  Note: In most OAuth2 implementations, the token endpoint is the same for both the
  //  refresh request and the exchange-code-for-token request (which happens when getting
  //  the OAuth2 token for the 1st time).   Wish uses a different URL for the refresh:
  oauth2.TokenEndpoint := 'https://merchant.wish.com/api/v3/oauth/refresh_token';

  //  The following uncommon option was added in Chilkat v9.5.0.85
  oauth2.UncommonOptions := 'EXCHANGE_CODE_FOR_TOKEN_USING_GET';

  //  Replace these with actual values.
  oauth2.ClientId := 'WISH-CLIENT-ID';
  oauth2.ClientSecret := 'WISH-CLIENT-SECRET';

  //  Get the "refresh_token"
  oauth2.RefreshToken := jsonToken.StringOf('data.refresh_token');

  //  Send the HTTP request to refresh the access token..
  success := oauth2.RefreshAccessToken();
  if (success <> True) then
    begin
      WriteLn(oauth2.LastErrorText);
      Exit;
    end;

  //  Save the new JSON access token response to a file.
  //  The access + refresh tokens contained in this JSON will be needed for the next refresh.
  sbJson := TStringBuilder.Create;
  sbJson.Append(oauth2.AccessTokenResponse);
  sbJson.WriteFile('qa_data/tokens/wish.json','utf-8',False);

  WriteLn('OAuth2 token refreshed!');
  WriteLn('New Access Token = ' + oauth2.AccessToken);


  jsonToken.Free;
  oauth2.Free;
  sbJson.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.