from typing import Any, Final

import litellm
from litellm.litellm_core_utils.llm_cost_calc.utils import (
    calculate_image_response_cost_from_usage,
)
from litellm.types.utils import ImageResponse


def cost_calculator(
    model: str,
    image_response: Any,
) -> float:
    """
    Azure AI image generation cost calculator
    """
    _model_info: Final = litellm.get_model_info(
        model=model,
        custom_llm_provider=litellm.LlmProviders.AZURE_AI.value,
    )

    if isinstance(image_response, ImageResponse):
        token_based_cost: Final = calculate_image_response_cost_from_usage(
            model=model,
            image_response=image_response,
            custom_llm_provider=litellm.LlmProviders.AZURE_AI.value,
        )
        if token_based_cost is not None:
            return token_based_cost

        output_cost_per_image: Final[float] = _model_info.get("output_cost_per_image") or 0.0
        num_images: int = 0
        if image_response.data:
            num_images = len(image_response.data)
        return output_cost_per_image * num_images

    raise ValueError(f"image_response must be of type ImageResponse got type={type(image_response)}")