editImage method

Implementation

Future<ImagesResult> editImage({
  required List<Uint8List> imageBytes,
  required List<String> filenames,
  required String prompt,
  ImageGenerationBackground? background,
  Uint8List? maskBytes,
  String? maskFilename,
  String? model,
  int? n,
  int? outputCompression,
  ImageOutputFormat? outputFormat,
  ImageOutputQuality? quality,
  ImageResponseFormat? responseFormat,
  ImageOutputSize? size,
  String? user,
}) async {
  final boundary = '----dart-openai-image-edit-${DateTime.now().microsecondsSinceEpoch.toRadixString(16)}';

  final fields = <String, String>{
    'prompt': prompt,
    if (background != null) 'background': background.toJson(),
    if (model != null) 'model': model,
    if (n != null) 'n': '$n',
    if (outputCompression != null) 'output_compression': '$outputCompression',
    if (outputFormat != null) 'output_format': outputFormat.toJson(),
    if (quality != null) 'quality': quality.toJson(),
    if (responseFormat != null) 'response_format': responseFormat.toJson(),
    if (size != null) 'size': size.toJson(),
    if (user != null) 'user': user,
  };

  final body = _buildMultipartBodyMultiple(
    boundary: boundary,
    files: [
      for (var i = 0; i < imageBytes.length; i++) _MultipartFileSpec(field: 'image', bytes: imageBytes[i], filename: filenames[i]),
      if (maskBytes != null) _MultipartFileSpec(field: 'mask', bytes: maskBytes, filename: maskFilename ?? 'mask.png'),
    ],
    fields: fields,
  );

  final resp = await httpClient.post(
    baseUrl.resolve('images/edits'),
    headers: getHeaders({'Content-Type': 'multipart/form-data; boundary=$boundary'}),
    body: body,
  );

  if (resp.statusCode == 200) {
    return ImagesResult.fromJson(jsonDecode(resp.body));
  }
  throw OpenAIRequestException.fromHttpResponse(resp);
}