createMultimodalMessage static method

Message createMultimodalMessage({ required String text, required ProcessedImage processedImage, required ModelType modelType, bool isUser = true, })

Creates a properly formatted message for multimodal AI models

Implementation

static Message createMultimodalMessage({
  required String text,
  required ProcessedImage processedImage,
  required ModelType modelType,
  bool isUser = true,
}) {
  try {
    gemmaLog(
        'MultimodalImageHandler: Creating multimodal message for $modelType...');

    // Validate inputs
    if (text.isEmpty) {
      throw ArgumentError('Text content cannot be empty');
    }

    if (processedImage.base64String.isEmpty) {
      throw ArgumentError('Processed image Base64 string cannot be empty');
    }

    // Create the message with proper image handling
    return Message.withImage(
      text: text,
      imageBytes: processedImage.processedBytes,
      isUser: isUser,
    );
  } catch (e) {
    gemmaLog(
        'MultimodalImageHandler: Failed to create multimodal message - $e');

    // Do NOT silently drop the image into a text-only message — that makes
    // the model answer as if no image was sent. Surface the failure so the
    // caller can react (no-silent-fallbacks).
    rethrow;
  }
}