from typing import IO
from preprocessor import preprocessor
from inferencer import interferencer

class ClassificationController:
    """
    Controller to handle the image classification logic.
    """
    def classify_image(self, image_file: IO) -> dict:
        """
        Orchestrates the classification of a single image file.

        Args:
            image_file (IO): The image file to classify.

        Returns:
            dict: The classification result.
        """
        try:
            # Step 1: Preprocess the image
            image_tensor = preprocessor.process(image_file)

            # Step 2: Perform inference
            result = interferencer.predict(image_tensor)

            return result
        except ValueError as e:
            # Handle specific errors like invalid images
            return {"error": str(e)}
        except Exception as e:
            # Handle unexpected errors
            print(f"An unexpected error occurred: {e}")
            return {"error": "An internal error occurred during classification."}

# Create a single instance of the controller
controller = ClassificationController()