import base64
import io

from PIL import Image


def process_image(source_bytes: bytes, resize_px: int):
    image = Image.open(io.BytesIO(source_bytes))
    width, height = image.size

    if min(width, height) > resize_px:
        if width < height:
            new_width = resize_px
            new_height = int((height / width) * new_width)
        else:
            new_height = resize_px
            new_width = int((width / height) * new_height)
        image = image.resize((new_width, new_height))

    byte_arr = io.BytesIO()
    image.save(byte_arr, format='PNG')
    image_bytes = byte_arr.getvalue()
    return base64.b64encode(image_bytes).decode('utf-8')