app/utils.py

from fastapi import UploadFile, HTTPException
from PIL import Image
import io
import logging
from typing import Tuple

def validate_image_size(image: Image.Image) -> Tuple[bool, str]:
    """Basic image validation"""
    try:
        # Just verify that we can get the image size
        _ = image.size
        return True, ""
    except Exception as e:
        return False, "Invalid image format"

def read_image(upload_file: UploadFile) -> Image.Image:
    """Read and validate image from uploaded file"""
    try:
        # Read image directly
        image_bytes = upload_file.file.read()
        image = Image.open(io.BytesIO(image_bytes))
        
        # Convert to RGB if needed
        if image.mode not in ('RGB', 'L'):
            image = image.convert('RGB')
            
        return image
        
    except IOError as e:
        logging.error(f"Failed to read image: {str(e)}")
        raise HTTPException(status_code=400, detail="Invalid image format")
    except Exception as e:
        logging.error(f"Unexpected error reading image: {str(e)}")
        raise HTTPException(status_code=500, detail="Failed to process image")