import base64
import os
import uuid

def save_base64_image(data_uri):
    if not isinstance(data_uri, str):
        return data_uri
    if not data_uri.startswith("data:image"):
        return data_uri
    try:
        header, encoded = data_uri.split(",", 1)
        ext = header.split(";")[0].split("/")[1]
        filepath = f"/tmp/{uuid.uuid4().hex}.{ext}"
        with open(filepath, "wb") as f:
            f.write(base64.b64decode(encoded))
        return filepath
    except Exception as e:
        print(f"Error decoding base64 image: {e}")
        return data_uri