from typing import Any, Dict, List
from unittest.mock import MagicMock, patch

import pytest

import litellm
from litellm.images.utils import ImageEditRequestUtils
from litellm.llms.base_llm.image_edit.transformation import BaseImageEditConfig
from litellm.types.images.main import ImageEditOptionalRequestParams


class MockImageEditConfig(BaseImageEditConfig):
    def get_supported_openai_params(self, model: str) -> List[str]:
        return ["size", "quality"]

    def map_openai_params(
        self,
        image_edit_optional_params: ImageEditOptionalRequestParams,
        model: str,
        drop_params: bool,
    ) -> Dict[str, Any]:
        return dict(image_edit_optional_params)

    def get_complete_url(
        self, model: str, api_base: str, litellm_params: dict
    ) -> str:
        return "https://example.com/api"

    def validate_environment(
        self, headers: dict, model: str, api_key: str = None
    ) -> dict:
        return headers

    def transform_image_edit_request(self, *args, **kwargs):
        return {}, []

    def transform_image_edit_response(self, *args, **kwargs):
        return MagicMock()


class TestImageEditRequestUtilsDropParams:
    def setup_method(self):
        self.config = MockImageEditConfig()
        self.model = "test-model"
        self._original_drop_params = getattr(litellm, "drop_params", None)

    def teardown_method(self):
        if self._original_drop_params is None:
            if hasattr(litellm, "drop_params"):
                delattr(litellm, "drop_params")
        else:
            litellm.drop_params = self._original_drop_params

    def test_unsupported_params_raises_without_drop(self):
        litellm.drop_params = False
        optional_params: ImageEditOptionalRequestParams = {
            "size": "1024x1024",
            "unsupported_param": "value",
        }

        with pytest.raises(litellm.UnsupportedParamsError) as exc_info:
            ImageEditRequestUtils.get_optional_params_image_edit(
                model=self.model,
                image_edit_provider_config=self.config,
                image_edit_optional_params=optional_params,
            )

        assert "unsupported_param" in str(exc_info.value)

    def test_drop_params_global_setting(self):
        litellm.drop_params = True
        optional_params: ImageEditOptionalRequestParams = {
            "size": "1024x1024",
            "unsupported_param": "value",
        }

        result = ImageEditRequestUtils.get_optional_params_image_edit(
            model=self.model,
            image_edit_provider_config=self.config,
            image_edit_optional_params=optional_params,
        )

        assert "size" in result
        assert "unsupported_param" not in result

    def test_drop_params_explicit_parameter(self):
        litellm.drop_params = False
        optional_params: ImageEditOptionalRequestParams = {
            "size": "1024x1024",
            "unsupported_param": "value",
        }

        result = ImageEditRequestUtils.get_optional_params_image_edit(
            model=self.model,
            image_edit_provider_config=self.config,
            image_edit_optional_params=optional_params,
            drop_params=True,
        )

        assert "size" in result
        assert "unsupported_param" not in result

    def test_additional_drop_params(self):
        litellm.drop_params = False
        optional_params: ImageEditOptionalRequestParams = {
            "size": "1024x1024",
            "quality": "high",
        }

        result = ImageEditRequestUtils.get_optional_params_image_edit(
            model=self.model,
            image_edit_provider_config=self.config,
            image_edit_optional_params=optional_params,
            additional_drop_params=["quality"],
        )

        assert "size" in result
        assert "quality" not in result

    def test_drop_params_false_with_global_true(self):
        litellm.drop_params = True
        optional_params: ImageEditOptionalRequestParams = {
            "size": "1024x1024",
            "unsupported_param": "value",
        }

        result = ImageEditRequestUtils.get_optional_params_image_edit(
            model=self.model,
            image_edit_provider_config=self.config,
            image_edit_optional_params=optional_params,
            drop_params=False,
        )

        assert "size" in result
        assert "unsupported_param" not in result

    def test_supported_params_pass_through(self):
        litellm.drop_params = False
        optional_params: ImageEditOptionalRequestParams = {
            "size": "1024x1024",
            "quality": "high",
        }

        result = ImageEditRequestUtils.get_optional_params_image_edit(
            model=self.model,
            image_edit_provider_config=self.config,
            image_edit_optional_params=optional_params,
        )

        assert result["size"] == "1024x1024"
        assert result["quality"] == "high"

    def test_additional_drop_params_with_unsupported_and_drop_true(self):
        litellm.drop_params = True
        optional_params: ImageEditOptionalRequestParams = {
            "size": "1024x1024",
            "quality": "high",
            "unsupported_param": "value",
        }

        result = ImageEditRequestUtils.get_optional_params_image_edit(
            model=self.model,
            image_edit_provider_config=self.config,
            image_edit_optional_params=optional_params,
            additional_drop_params=["quality"],
        )

        assert "size" in result
        assert "quality" not in result
        assert "unsupported_param" not in result