Dart SDK

dependencies:
  WinWinKit:
    git: https://github.com/winwinkit/winwinkit-dart.git

import "package:WinWinKit/api.dart";

// Create or update user.
final userApi = UsersApi();
final userRequest = UserCreateRequest(
  appUserId: 'your-app-user-id',
);

try {
    final user = await userApi.createOrUpdateUser('your-api-key', userRequest);
    print(user);
}
catch (e) {
    print('Exception when calling UsersApi->createOrUpdateUser: $e\n');
}

...

// Claim code.
final claimActionsApi = ClaimActionsApi();
final claimRequest = UserClaimCodeRequest(
  code: 'code-to-claim',
);

try {
    final response = await claimActionsApi.claimCode('your-app-user-id', 'your-api-key', claimRequest);
    print(response);
}
catch (e) {
    print('Exception when calling ClaimActionsApi->claimCode: $e\n');
}

...

// Fetch offer code
final offerCodeApi = AppStoreApi();

try {
    final result = offerCodeApi.getOfferCode('your-offer-code-id', 'your-api-key');
    print(result);
} catch (e) {
    print('Exception when calling AppStoreApi->getOfferCode: $e\n');
}