@app.get("/calculate-food")
def calculate_food_endpoint(activity: int, weight: int):
    """
    Calculates the recommended amount of dog food based on activity level and weight.

    Args:
        activity: The dog's activity level, as a number from 1 to 5.
        weight: The dog's weight in kilograms.

    Returns:
        A JSON object containing the recommended amount of food in cups.
    """

    # Check if the activity and weight parameters are present in the API request.
    if activity is None or weight is None:
        return {"error": "Please provide both activity level and weight."}

    # Calculate the recommended amount of food.
    result = calculate_food(activity, weight)

    # Respond with the result as JSON.
    return result