import datetime as real_datetime
import smtplib

import pytest
from fastapi import HTTPException

from litellm.caching.caching import DualCache
from litellm.integrations.custom_guardrail import CustomGuardrail
from litellm.proxy._types import ProxyErrorTypes
from litellm.proxy.utils import ProxyLogging
from litellm.types.guardrails import GuardrailEventHooks


from unittest.mock import MagicMock, patch

from litellm.proxy.utils import get_custom_url, join_paths


def test_get_custom_url(monkeypatch):
    monkeypatch.setenv("SERVER_ROOT_PATH", "/litellm")
    custom_url = get_custom_url(request_base_url="http://0.0.0.0:4000", route="ui/")
    assert custom_url == "http://0.0.0.0:4000/litellm/ui/"


def test_proxy_only_error_true_for_llm_route():
    proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
    assert proxy_logging_obj._is_proxy_only_llm_api_error(
        original_exception=Exception(),
        error_type=ProxyErrorTypes.auth_error,
        route="/v1/chat/completions",
    )


def test_proxy_only_error_true_for_info_route():
    proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
    assert (
        proxy_logging_obj._is_proxy_only_llm_api_error(
            original_exception=Exception(),
            error_type=ProxyErrorTypes.auth_error,
            route="/key/info",
        )
        is True
    )


def test_proxy_only_error_false_for_non_llm_non_info_route():
    proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
    assert (
        proxy_logging_obj._is_proxy_only_llm_api_error(
            original_exception=Exception(),
            error_type=ProxyErrorTypes.auth_error,
            route="/key/generate",
        )
        is False
    )


def test_proxy_only_error_false_for_other_error_type():
    proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
    assert (
        proxy_logging_obj._is_proxy_only_llm_api_error(
            original_exception=Exception(),
            error_type=None,
            route="/v1/chat/completions",
        )
        is False
    )


@pytest.mark.asyncio
async def test_proxy_only_error_log_marks_no_upstream_llm_call():
    """A proxy-gate error (auth/rate-limit) synthesizes a ``Logging`` object and
    fires ``pre_call`` so the failure is logged — but it must tag the object with
    ``LITELLM_LOGGING_NO_UPSTREAM_LLM_CALL`` so tracing callbacks don't fabricate
    an LLM-call span for a request that never reached a provider (root cause of the
    misplaced gen-AI span on auth failure)."""
    from litellm.constants import LITELLM_LOGGING_NO_UPSTREAM_LLM_CALL
    from litellm.proxy._types import UserAPIKeyAuth

    proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
    captured = {}

    def fake_pre_call(self, *args, **kwargs):
        captured["flag"] = self.model_call_details.get(LITELLM_LOGGING_NO_UPSTREAM_LLM_CALL)

    from litellm.litellm_core_utils.litellm_logging import Logging

    orig_pre_call = Logging.pre_call
    orig_async_failure = Logging.async_failure_handler
    Logging.pre_call = fake_pre_call

    async def _noop_async_failure(self, *args, **kwargs):
        return None

    Logging.async_failure_handler = _noop_async_failure
    try:
        await proxy_logging_obj._handle_logging_proxy_only_error(
            request_data={
                "model": "gpt-4o",
                "messages": [{"role": "user", "content": "hi"}],
            },
            user_api_key_dict=UserAPIKeyAuth(api_key="sk-bad", request_route="/v1/chat/completions"),
            route="/v1/chat/completions",
            original_exception=Exception("bad key"),
        )
    finally:
        Logging.pre_call = orig_pre_call
        Logging.async_failure_handler = orig_async_failure

    assert captured.get("flag") is True


@pytest.mark.asyncio
async def test_proxy_only_error_log_keeps_litellm_metadata_in_litellm_params():
    """Responses API requests carry guardrail info under ``litellm_metadata``
    (not ``metadata``). It must land in litellm_params so
    ``merge_litellm_metadata`` can surface ``guardrail_information`` in the
    spend-log failure row, matching the chat completions path."""
    from litellm.proxy._types import UserAPIKeyAuth

    proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
    captured = {}
    guardrail_info = [{"guardrail_name": "test-guard", "guardrail_status": "blocked"}]

    def fake_update_environment_variables(self, *args, **kwargs):
        captured["litellm_params"] = kwargs.get("litellm_params")
        captured["optional_params"] = kwargs.get("optional_params")

    from litellm.litellm_core_utils.litellm_logging import Logging

    orig_update_env = Logging.update_environment_variables
    orig_pre_call = Logging.pre_call
    orig_async_failure = Logging.async_failure_handler

    async def _noop_async_failure(self, *args, **kwargs):
        return None

    Logging.update_environment_variables = fake_update_environment_variables
    Logging.pre_call = lambda self, *args, **kwargs: None
    Logging.async_failure_handler = _noop_async_failure
    try:
        await proxy_logging_obj._handle_logging_proxy_only_error(
            request_data={
                "model": "gpt-4o",
                "input": "blocked prompt",
                "litellm_metadata": {"standard_logging_guardrail_information": guardrail_info},
            },
            user_api_key_dict=UserAPIKeyAuth(api_key="sk-1234", request_route="/v1/responses"),
            route="/v1/responses",
            original_exception=HTTPException(status_code=400, detail="blocked"),
        )
    finally:
        Logging.update_environment_variables = orig_update_env
        Logging.pre_call = orig_pre_call
        Logging.async_failure_handler = orig_async_failure

    assert captured["litellm_params"]["litellm_metadata"]["standard_logging_guardrail_information"] == guardrail_info
    assert "litellm_metadata" not in captured["optional_params"]


def test_get_model_group_info_order():
    from litellm import Router
    from litellm.proxy.proxy_server import _get_model_group_info

    router = Router(
        model_list=[
            {
                "model_name": "openai/tts-1",
                "litellm_params": {
                    "model": "openai/tts-1",
                    "api_key": "sk-1234",
                },
            },
            {
                "model_name": "openai/gpt-3.5-turbo",
                "litellm_params": {
                    "model": "openai/gpt-3.5-turbo",
                    "api_key": "sk-1234",
                },
            },
        ]
    )
    model_list = _get_model_group_info(
        llm_router=router,
        all_models_str=["openai/tts-1", "openai/gpt-3.5-turbo"],
        model_group=None,
    )

    model_groups = [m.model_group for m in model_list]
    assert model_groups == ["openai/tts-1", "openai/gpt-3.5-turbo"]


def test_join_paths_no_duplication():
    """Test that join_paths doesn't duplicate route when base_path already ends with it"""
    result = join_paths(base_path="http://0.0.0.0:4000/my-custom-path/", route="/my-custom-path")
    assert result == "http://0.0.0.0:4000/my-custom-path"


def test_join_paths_normal_join():
    """Test normal path joining"""
    result = join_paths(base_path="http://0.0.0.0:4000", route="/api/v1")
    assert result == "http://0.0.0.0:4000/api/v1"


def test_join_paths_with_trailing_slash():
    """Test path joining with trailing slash on base_path"""
    result = join_paths(base_path="http://0.0.0.0:4000/", route="api/v1")
    assert result == "http://0.0.0.0:4000/api/v1"


def test_join_paths_empty_base():
    """Test path joining with empty base_path"""
    result = join_paths(base_path="", route="api/v1")
    assert result == "/api/v1"


def test_join_paths_empty_route():
    """Test path joining with empty route"""
    result = join_paths(base_path="http://0.0.0.0:4000", route="")
    assert result == "http://0.0.0.0:4000"


def test_join_paths_both_empty():
    """Test path joining with both empty"""
    result = join_paths(base_path="", route="")
    assert result == "/"


def test_join_paths_nested_path():
    """Test path joining with nested paths"""
    result = join_paths(base_path="http://0.0.0.0:4000/v1", route="chat/completions")
    assert result == "http://0.0.0.0:4000/v1/chat/completions"


def _patch_today(monkeypatch, year, month, day):
    class PatchedDate(real_datetime.date):
        @classmethod
        def today(cls):
            return real_datetime.date(year, month, day)

    monkeypatch.setattr("litellm.proxy.utils.date", PatchedDate)


def test_get_projected_spend_over_limit_day_one(monkeypatch):
    from litellm.proxy.utils import _get_projected_spend_over_limit

    _patch_today(monkeypatch, 2026, 1, 1)
    result = _get_projected_spend_over_limit(100.0, 1.0)

    assert result is not None
    projected_spend, projected_exceeded_date = result
    assert projected_spend == 3100.0
    assert projected_exceeded_date == real_datetime.date(2026, 1, 1)


def test_get_projected_spend_over_limit_december(monkeypatch):
    from litellm.proxy.utils import _get_projected_spend_over_limit

    _patch_today(monkeypatch, 2026, 12, 15)
    result = _get_projected_spend_over_limit(100.0, 1.0)

    assert result is not None
    projected_spend, projected_exceeded_date = result
    assert projected_spend == pytest.approx(214.28571428571428)
    assert projected_exceeded_date == real_datetime.date(2026, 12, 15)


def test_get_projected_spend_over_limit_includes_current_spend(monkeypatch):
    from litellm.proxy.utils import _get_projected_spend_over_limit

    _patch_today(monkeypatch, 2026, 4, 11)
    result = _get_projected_spend_over_limit(100.0, 200.0)

    assert result is not None
    projected_spend, projected_exceeded_date = result
    assert projected_spend == 290.0
    assert projected_exceeded_date == real_datetime.date(2026, 4, 21)


# ---------------------------------------------------------------------------
# L2: _enrich_http_exception_with_guardrail_context
# Regression coverage for case 2026-04-10-internal-bedrock-guardrail-streaming-error.
# ---------------------------------------------------------------------------


def test_enrich_http_exception_with_guardrail_context_dict_detail():
    """L2: dict-detail HTTPException is enriched with guardrail_name and mode."""
    from litellm.proxy.utils import _enrich_http_exception_with_guardrail_context

    class StubCallback:
        guardrail_name = "bedrock-pii-guard"
        event_hook = "post_call"

    exc = HTTPException(status_code=400, detail={"error": "Violated guardrail policy"})
    _enrich_http_exception_with_guardrail_context(exc, StubCallback())
    assert exc.detail["guardrail_name"] == "bedrock-pii-guard"
    assert exc.detail["guardrail_mode"] == "post_call"


def test_enrich_http_exception_string_detail_noop():
    """L2: string-detail HTTPException is not mutated (can't add fields to a str)."""
    from litellm.proxy.utils import _enrich_http_exception_with_guardrail_context

    class StubCallback:
        guardrail_name = "x"
        event_hook = "pre_call"

    exc = HTTPException(status_code=400, detail="Content blocked")
    _enrich_http_exception_with_guardrail_context(exc, StubCallback())
    assert exc.detail == "Content blocked"


def test_enrich_http_exception_setdefault_does_not_overwrite():
    """L2: a guardrail that already populates guardrail_name explicitly wins."""
    from litellm.proxy.utils import _enrich_http_exception_with_guardrail_context

    class StubCallback:
        guardrail_name = "inferred-name"
        event_hook = "pre_call"

    exc = HTTPException(
        status_code=400,
        detail={"error": "x", "guardrail_name": "explicit-name"},
    )
    _enrich_http_exception_with_guardrail_context(exc, StubCallback())
    assert exc.detail["guardrail_name"] == "explicit-name"


def test_enrich_http_exception_non_http_exception_noop():
    """L2: non-HTTPException is left alone and the helper does not raise."""
    from litellm.proxy.utils import _enrich_http_exception_with_guardrail_context

    class StubCallback:
        guardrail_name = "x"
        event_hook = "pre_call"

    exc = ValueError("not an HTTPException")
    _enrich_http_exception_with_guardrail_context(exc, StubCallback())
    assert str(exc) == "not an HTTPException"


def test_enrich_http_exception_callback_without_guardrail_name_noop():
    """L2: callback without guardrail_name attribute leaves detail alone."""
    from litellm.proxy.utils import _enrich_http_exception_with_guardrail_context

    class StubCallback:
        pass

    exc = HTTPException(status_code=400, detail={"error": "x"})
    _enrich_http_exception_with_guardrail_context(exc, StubCallback())
    assert exc.detail == {"error": "x"}


class TestPostCallFailureHookLiftsFirstApiCallStartTime:
    """post_call_failure_hook lifts first_api_call_start_time off the
    logging object into request_data (an internal top-level key) before
    the non-serialisable logging object is popped, so failure-path
    callbacks (OTel preprocessing latency) can still read it. It must
    never land in request_data["metadata"] (user request metadata,
    echoed downstream and typed Dict[str, str] in batch objects).
    """

    async def _run(self, request_data):
        from unittest.mock import AsyncMock, patch

        from litellm.proxy._types import UserAPIKeyAuth

        proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
        proxy_logging_obj.alert_types = []  # skip alerting branch
        with patch.object(proxy_logging_obj, "update_request_status", new=AsyncMock()):
            await proxy_logging_obj.post_call_failure_hook(
                request_data=request_data,
                original_exception=Exception("boom"),
                user_api_key_dict=UserAPIKeyAuth(),
            )

    @pytest.mark.asyncio
    async def test_lifts_to_top_level_and_pops_logging_obj(self):
        handoff = real_datetime.datetime(2026, 1, 1, 0, 0, 0)
        logging_obj = MagicMock()
        logging_obj.model_call_details = {"first_api_call_start_time": handoff}
        user_meta = {}
        request_data = {
            "litellm_logging_obj": logging_obj,
            "metadata": user_meta,
        }
        await self._run(request_data)

        assert request_data["first_api_call_start_time"] == handoff
        assert "litellm_logging_obj" not in request_data
        # user metadata is never touched
        assert user_meta == {}
        assert "first_api_call_start_time" not in request_data["metadata"]

    @pytest.mark.asyncio
    async def test_no_logging_obj_is_noop(self):
        request_data = {"metadata": {}}
        await self._run(request_data)
        assert "first_api_call_start_time" not in request_data

    @pytest.mark.asyncio
    async def test_logging_obj_without_anchor_is_noop(self):
        logging_obj = MagicMock()
        logging_obj.model_call_details = {}
        request_data = {"litellm_logging_obj": logging_obj}
        await self._run(request_data)
        assert "first_api_call_start_time" not in request_data
        assert "litellm_logging_obj" not in request_data


class TestPostCallFailureHookLiftsRecoveredPartialSpend:
    """A stream that broke mid-flight still billed the provider for the chunks
    already delivered. The streaming handler stashes that recovered usage and
    cost on the logging object; post_call_failure_hook must lift them onto
    request_data before the logging object is popped, so the failure-path spend
    callbacks (which run after the pop) record the real partial spend.
    """

    async def _run(self, request_data):
        from unittest.mock import AsyncMock, patch

        from litellm.proxy._types import UserAPIKeyAuth

        proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
        proxy_logging_obj.alert_types = []
        with patch.object(proxy_logging_obj, "update_request_status", new=AsyncMock()):
            await proxy_logging_obj.post_call_failure_hook(
                request_data=request_data,
                original_exception=Exception("boom"),
                user_api_key_dict=UserAPIKeyAuth(),
            )

    @pytest.mark.asyncio
    async def test_lifts_recovered_usage_and_cost(self):
        from litellm.types.utils import Usage

        recovered_usage = Usage(prompt_tokens=30, completion_tokens=1, total_tokens=31)
        logging_obj = MagicMock()
        logging_obj.model_call_details = {
            "combined_usage_object": recovered_usage,
            "response_cost": 3.5e-05,
        }
        request_data = {"litellm_logging_obj": logging_obj, "metadata": {}}
        await self._run(request_data)

        assert request_data["combined_usage_object"] is recovered_usage
        assert request_data["response_cost"] == 3.5e-05
        assert "litellm_logging_obj" not in request_data

    @pytest.mark.asyncio
    async def test_recovered_usage_without_cost_clobbers_client_cost_with_zero(self):
        from litellm.types.utils import Usage

        recovered_usage = Usage(prompt_tokens=30, completion_tokens=1, total_tokens=31)
        logging_obj = MagicMock()
        logging_obj.model_call_details = {"combined_usage_object": recovered_usage}
        request_data = {
            "litellm_logging_obj": logging_obj,
            "response_cost": 999.0,
            "metadata": {},
        }
        await self._run(request_data)

        assert request_data["combined_usage_object"] is recovered_usage
        assert request_data["response_cost"] == 0.0

    @pytest.mark.asyncio
    async def test_no_recovered_usage_is_noop(self):
        logging_obj = MagicMock()
        logging_obj.model_call_details = {}
        request_data = {"litellm_logging_obj": logging_obj, "metadata": {}}
        await self._run(request_data)
        assert "combined_usage_object" not in request_data
        assert "response_cost" not in request_data


class TestPostCallFailureHookLiftsStandardLoggingObject:
    """Failure callbacks read standard_logging_object from request_data, but
    post_call_failure_hook pops litellm_logging_obj before they run. The hook
    must lift the logging obj's standard_logging_object onto request_data so
    failed-request spend logs keep deployment attribution (LIT-5795).
    """

    async def _run(self, request_data):
        from unittest.mock import AsyncMock, patch

        from litellm.proxy._types import UserAPIKeyAuth

        proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
        proxy_logging_obj.alert_types = []
        with patch.object(proxy_logging_obj, "update_request_status", new=AsyncMock()):
            await proxy_logging_obj.post_call_failure_hook(
                request_data=request_data,
                original_exception=Exception("boom"),
                user_api_key_dict=UserAPIKeyAuth(),
            )

    @pytest.mark.asyncio
    async def test_lifts_standard_logging_object(self):
        sl_object = {"model_id": "mid-123", "model_group": "group-x"}
        logging_obj = MagicMock()
        logging_obj.model_call_details = {"standard_logging_object": sl_object}
        request_data = {"litellm_logging_obj": logging_obj, "metadata": {}}
        await self._run(request_data)
        assert request_data["standard_logging_object"] is sl_object
        assert "litellm_logging_obj" not in request_data

    @pytest.mark.asyncio
    async def test_logging_obj_value_overwrites_preexisting_key(self):
        authoritative = {"model_id": "from-logging-obj"}
        logging_obj = MagicMock()
        logging_obj.model_call_details = {"standard_logging_object": authoritative}
        request_data = {
            "litellm_logging_obj": logging_obj,
            "standard_logging_object": {"model_id": "client-injected"},
            "metadata": {},
        }
        await self._run(request_data)
        assert request_data["standard_logging_object"] is authoritative

    @pytest.mark.asyncio
    async def test_client_supplied_key_is_stripped_when_logging_obj_supplies_none(self):
        spoofed = {"model_id": "client-injected"}
        request_data = {"standard_logging_object": spoofed, "metadata": {}}
        await self._run(request_data)
        assert "standard_logging_object" not in request_data

        logging_obj = MagicMock()
        logging_obj.model_call_details = {}
        request_data_with_obj = {
            "litellm_logging_obj": logging_obj,
            "standard_logging_object": spoofed,
            "metadata": {},
        }
        await self._run(request_data_with_obj)
        assert "standard_logging_object" not in request_data_with_obj

    @pytest.mark.asyncio
    async def test_pass_through_failure_never_relifts_client_supplied_key(self):
        from datetime import datetime
        from unittest.mock import AsyncMock, patch

        from fastapi import HTTPException

        from litellm.litellm_core_utils.litellm_logging import Logging
        from litellm.proxy._types import UserAPIKeyAuth

        logging_obj = Logging(
            model="claude-haiku-4-5",
            messages=[{"role": "user", "content": "hi"}],
            stream=False,
            call_type="pass_through_endpoint",
            start_time=datetime.now(),
            litellm_call_id="test-call-id",
            function_id="test-function-id",
        )
        request_data = {
            "litellm_logging_obj": logging_obj,
            "standard_logging_object": {"model_id": "client-injected"},
            "metadata": {},
        }
        proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
        proxy_logging_obj.alert_types = []
        with patch.object(proxy_logging_obj, "update_request_status", new=AsyncMock()):
            await proxy_logging_obj.post_call_failure_hook(
                request_data=request_data,
                original_exception=HTTPException(status_code=401, detail="unauthorized"),
                user_api_key_dict=UserAPIKeyAuth(request_route="/v1/chat/completions"),
            )
        assert "standard_logging_object" not in request_data
        assert "standard_logging_object" not in logging_obj.model_call_details

    @pytest.mark.asyncio
    async def test_no_standard_logging_object_is_noop(self):
        logging_obj = MagicMock()
        logging_obj.model_call_details = {}
        request_data = {"litellm_logging_obj": logging_obj, "metadata": {}}
        await self._run(request_data)
        assert "standard_logging_object" not in request_data


class TestPostCallFailureHookEstimatesDispatchedInputTokens:
    """A non-stream request that failed after dispatch (timeout, provider
    error) consumed provider-billed input tokens but recovered no usage.
    post_call_failure_hook must estimate the input side onto request_data so
    the spend log's failure row records what was sent instead of zero, while
    never charging spend for the failure (LIT-5690).
    """

    async def _run(self, request_data):
        from unittest.mock import AsyncMock, patch

        from litellm.proxy._types import UserAPIKeyAuth

        proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
        proxy_logging_obj.alert_types = []
        with patch.object(proxy_logging_obj, "update_request_status", new=AsyncMock()):
            await proxy_logging_obj.post_call_failure_hook(
                request_data=request_data,
                original_exception=Exception("boom"),
                user_api_key_dict=UserAPIKeyAuth(),
            )

    def _logging_obj(self, model_call_details):
        logging_obj = MagicMock()
        logging_obj.model_call_details = model_call_details
        return logging_obj

    @pytest.mark.asyncio
    async def test_dispatched_failure_estimates_input_tokens_with_zero_cost(self):
        from datetime import datetime

        from litellm.types.utils import Usage

        request_data = {
            "litellm_logging_obj": self._logging_obj(
                {
                    "first_api_call_start_time": datetime.now(),
                    "model": "gpt-3.5-turbo",
                    "messages": [{"role": "user", "content": "count these input tokens please"}],
                    "call_type": "acompletion",
                }
            ),
            "metadata": {},
            "response_cost": 123.0,
        }
        await self._run(request_data)

        estimated = request_data["combined_usage_object"]
        assert isinstance(estimated, Usage)
        assert estimated.prompt_tokens > 0
        assert estimated.completion_tokens == 0
        assert estimated.total_tokens == estimated.prompt_tokens
        assert request_data["response_cost"] == 0.0

    @pytest.mark.asyncio
    async def test_failure_before_dispatch_stays_zero(self):
        request_data = {
            "litellm_logging_obj": self._logging_obj(
                {
                    "model": "gpt-3.5-turbo",
                    "messages": [{"role": "user", "content": "never dispatched"}],
                }
            ),
            "metadata": {},
        }
        await self._run(request_data)

        assert "combined_usage_object" not in request_data
        assert "response_cost" not in request_data

    @pytest.mark.asyncio
    async def test_proxy_only_error_never_dispatched_stays_zero(self):
        from datetime import datetime

        from litellm.constants import LITELLM_LOGGING_NO_UPSTREAM_LLM_CALL

        request_data = {
            "litellm_logging_obj": self._logging_obj(
                {
                    "first_api_call_start_time": datetime.now(),
                    "model": "no-such-model",
                    "messages": [{"role": "user", "content": "hi"}],
                    LITELLM_LOGGING_NO_UPSTREAM_LLM_CALL: True,
                }
            ),
            "metadata": {},
        }
        await self._run(request_data)

        assert "combined_usage_object" not in request_data
        assert "response_cost" not in request_data

    @pytest.mark.asyncio
    async def test_recovered_partial_usage_wins_over_estimate(self):
        from datetime import datetime

        from litellm.types.utils import Usage

        recovered_usage = Usage(prompt_tokens=30, completion_tokens=7, total_tokens=37)
        request_data = {
            "litellm_logging_obj": self._logging_obj(
                {
                    "first_api_call_start_time": datetime.now(),
                    "model": "gpt-3.5-turbo",
                    "messages": [{"role": "user", "content": "mid-stream failure"}],
                    "call_type": "acompletion",
                    "combined_usage_object": recovered_usage,
                    "response_cost": 3.5e-05,
                }
            ),
            "metadata": {},
        }
        await self._run(request_data)

        assert request_data["combined_usage_object"] is recovered_usage
        assert request_data["response_cost"] == 3.5e-05

    @pytest.mark.asyncio
    async def test_dispatched_failure_with_text_completion_prompt(self):
        from datetime import datetime

        from litellm.types.utils import Usage

        request_data = {
            "litellm_logging_obj": self._logging_obj(
                {
                    "first_api_call_start_time": datetime.now(),
                    "model": "gpt-3.5-turbo",
                    "messages": "a plain text-completion prompt string",
                    "call_type": "atext_completion",
                }
            ),
            "metadata": {},
        }
        await self._run(request_data)

        estimated = request_data["combined_usage_object"]
        assert isinstance(estimated, Usage)
        assert estimated.prompt_tokens > 0
        assert estimated.completion_tokens == 0

    def _dispatched_request_data(self, messages, optional_params, call_type="acompletion"):
        from datetime import datetime

        return {
            "litellm_logging_obj": self._logging_obj(
                {
                    "first_api_call_start_time": datetime.now(),
                    "model": "gpt-3.5-turbo",
                    "messages": messages,
                    "optional_params": optional_params,
                    "call_type": call_type,
                }
            ),
            "metadata": {},
        }

    @pytest.mark.asyncio
    async def test_image_message_estimated_without_fetching_image(self):
        import litellm as litellm_module
        from litellm.types.utils import Usage

        messages = [
            {
                "role": "user",
                "content": [
                    {"type": "text", "text": "describe this image"},
                    {
                        "type": "image_url",
                        "image_url": {"url": "http://127.0.0.1:1/unreachable.png", "detail": "high"},
                    },
                ],
            }
        ]
        request_data = self._dispatched_request_data(messages, {})
        await self._run(request_data)

        estimated = request_data["combined_usage_object"]
        assert isinstance(estimated, Usage)
        expected = litellm_module.token_counter(
            model="gpt-3.5-turbo", messages=messages, use_default_image_token_count=True
        )
        assert estimated.prompt_tokens == expected
        assert estimated.prompt_tokens > 0

    @pytest.mark.asyncio
    async def test_embedding_string_list_input_counted_in_estimate(self):
        import litellm as litellm_module
        from litellm.types.utils import Usage

        embedding_input = ["first embedding text", "second embedding text"]
        request_data = self._dispatched_request_data(embedding_input, {}, call_type="aembedding")
        await self._run(request_data)

        estimated = request_data["combined_usage_object"]
        assert isinstance(estimated, Usage)
        expected = litellm_module.token_counter(model="gpt-3.5-turbo", text="".join(embedding_input))
        assert estimated.prompt_tokens == expected

    @pytest.mark.asyncio
    async def test_transcription_checksum_not_estimated(self):
        request_data = self._dispatched_request_data("a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6", {}, call_type="atranscription")
        await self._run(request_data)

        assert "combined_usage_object" not in request_data
        assert "response_cost" not in request_data

    @pytest.mark.asyncio
    async def test_anthropic_system_prompt_counted_in_estimate(self):
        import litellm as litellm_module
        from litellm.types.utils import Usage

        system_prompt = "You are a verbose historian who narrates every fact in exhaustive detail."
        messages = [{"role": "user", "content": "write a short essay"}]
        request_data = self._dispatched_request_data(messages, {"system": system_prompt, "max_tokens": 100})
        await self._run(request_data)

        estimated = request_data["combined_usage_object"]
        assert isinstance(estimated, Usage)
        expected = litellm_module.token_counter(
            model="gpt-3.5-turbo", messages=messages
        ) + litellm_module.token_counter(model="gpt-3.5-turbo", text=system_prompt)
        assert estimated.prompt_tokens == expected

    @pytest.mark.asyncio
    async def test_anthropic_system_text_blocks_counted_in_estimate(self):
        import litellm as litellm_module
        from litellm.types.utils import Usage

        system_blocks = [
            {"type": "text", "text": "part one of the system prompt. "},
            {"type": "text", "text": "part two of the system prompt."},
        ]
        messages = [{"role": "user", "content": "write a short essay"}]
        request_data = self._dispatched_request_data(messages, {"system": system_blocks})
        await self._run(request_data)

        estimated = request_data["combined_usage_object"]
        assert isinstance(estimated, Usage)
        expected = litellm_module.token_counter(
            model="gpt-3.5-turbo", messages=messages
        ) + litellm_module.token_counter(
            model="gpt-3.5-turbo", text="part one of the system prompt. part two of the system prompt."
        )
        assert estimated.prompt_tokens == expected

    @pytest.mark.asyncio
    async def test_responses_instructions_counted_in_estimate(self):
        import litellm as litellm_module
        from litellm.types.utils import Usage

        instructions = "Answer every question as a meticulous archivist."
        request_data = self._dispatched_request_data("summarize the archive", {"instructions": instructions})
        await self._run(request_data)

        estimated = request_data["combined_usage_object"]
        assert isinstance(estimated, Usage)
        expected = litellm_module.token_counter(
            model="gpt-3.5-turbo", text="summarize the archive"
        ) + litellm_module.token_counter(model="gpt-3.5-turbo", text=instructions)
        assert estimated.prompt_tokens == expected

    @pytest.mark.asyncio
    async def test_request_body_system_counted_when_optional_params_empty(self):
        import litellm as litellm_module
        from litellm.types.utils import Usage

        system_prompt = "You are a meticulous cartographer who labels every landmark."
        messages = [{"role": "user", "content": "draw me a map"}]
        request_data = {
            **self._dispatched_request_data(messages, {}, call_type="aanthropic_messages"),
            "system": system_prompt,
        }
        await self._run(request_data)

        estimated = request_data["combined_usage_object"]
        assert isinstance(estimated, Usage)
        expected = litellm_module.token_counter(
            model="gpt-3.5-turbo", messages=messages
        ) + litellm_module.token_counter(model="gpt-3.5-turbo", text=system_prompt)
        assert estimated.prompt_tokens == expected

    @pytest.mark.asyncio
    async def test_optional_params_system_wins_over_request_body_system(self):
        import litellm as litellm_module
        from litellm.types.utils import Usage

        dispatched_system = "short dispatched system prompt"
        messages = [{"role": "user", "content": "hello"}]
        request_data = {
            **self._dispatched_request_data(messages, {"system": dispatched_system}),
            "system": "a much longer request body system prompt that must not be double counted here",
        }
        await self._run(request_data)

        estimated = request_data["combined_usage_object"]
        assert isinstance(estimated, Usage)
        expected = litellm_module.token_counter(
            model="gpt-3.5-turbo", messages=messages
        ) + litellm_module.token_counter(model="gpt-3.5-turbo", text=dispatched_system)
        assert estimated.prompt_tokens == expected


from typing import cast

import litellm
from litellm.proxy.utils import create_model_info_response
from litellm.types.utils import ModelInfo


def _fake_model_info(**fields: object) -> ModelInfo:
    return cast(ModelInfo, dict(fields))


def _raise_unmapped(model_id: str) -> ModelInfo:
    raise ValueError(f"This model isn't mapped yet: {model_id}")


def test_create_model_info_response_includes_max_tokens_from_lookup():
    response = create_model_info_response(
        model_id="some-model",
        provider="openai",
        llm_router=None,
        get_model_info=lambda _model: _fake_model_info(max_input_tokens=128000, max_output_tokens=16384),
    )

    assert response["id"] == "some-model"
    assert response["object"] == "model"
    assert response["max_input_tokens"] == 128000
    assert response["max_output_tokens"] == 16384


def test_create_model_info_response_does_not_call_router_group_info():
    router = MagicMock()
    router.get_configured_token_limits.return_value = (None, None)

    response = create_model_info_response(
        model_id="some-model",
        provider="openai",
        llm_router=router,
        get_model_info=lambda _model: _fake_model_info(max_input_tokens=128000, max_output_tokens=16384),
    )

    router.get_model_group_info.assert_not_called()
    assert response["max_input_tokens"] == 128000


def test_create_model_info_response_uses_deployment_limits_when_not_in_cost_map():
    router = MagicMock()
    router.get_configured_token_limits.return_value = (32000, 8000)

    response = create_model_info_response(
        model_id="my-custom-deployment",
        provider="openai",
        llm_router=router,
        get_model_info=_raise_unmapped,
    )

    router.get_model_group_info.assert_not_called()
    assert response["max_input_tokens"] == 32000
    assert response["max_output_tokens"] == 8000


def test_create_model_info_response_uses_deployment_mode_for_auto_router():
    router = litellm.Router(
        model_list=[
            {
                "model_name": "claude-sonnet",
                "litellm_params": {"model": "openai/gpt-4o-mini", "api_key": "test-key"},
            },
            {
                "model_name": "claude-auto",
                "litellm_params": {
                    "model": "auto_router/complexity_router",
                    "complexity_router_config": {
                        "tiers": {
                            "SIMPLE": "claude-sonnet",
                            "MEDIUM": "claude-sonnet",
                            "COMPLEX": "claude-sonnet",
                        }
                    },
                    "complexity_router_default_model": "claude-sonnet",
                },
                "model_info": {
                    "mode": "chat",
                    "max_input_tokens": 1_000_000,
                    "max_output_tokens": 128_000,
                },
            },
        ]
    )

    response = create_model_info_response(
        model_id="claude-auto",
        provider="openai",
        llm_router=router,
        get_model_info=_raise_unmapped,
    )

    assert response["mode"] == "chat"
    assert response["max_input_tokens"] == 1_000_000
    assert response["max_output_tokens"] == 128_000


def test_create_model_info_response_deployment_limits_override_cost_map():
    router = MagicMock()
    router.get_configured_token_limits.return_value = (200000, None)

    response = create_model_info_response(
        model_id="gpt-4o",
        provider="openai",
        llm_router=router,
        get_model_info=lambda _model: _fake_model_info(max_input_tokens=128000, max_output_tokens=16384),
    )

    assert response["max_input_tokens"] == 200000
    assert response["max_output_tokens"] == 16384


def test_create_model_info_response_survives_malformed_configured_limits():
    from litellm import Router

    router = Router(
        model_list=[
            {
                "model_name": "bad-limit-model",
                "litellm_params": {"model": "openai/some-unmapped-model"},
                "model_info": {"max_input_tokens": "128,000"},
            }
        ]
    )

    response = create_model_info_response(
        model_id="bad-limit-model",
        provider="openai",
        llm_router=router,
        get_model_info=_raise_unmapped,
    )

    assert response["id"] == "bad-limit-model"
    assert "max_input_tokens" not in response
    assert "max_output_tokens" not in response


@pytest.mark.parametrize("bad_value", ["128,000", "", "unlimited", [128000], {"max": 128000}, True])
def test_create_model_info_response_survives_malformed_cost_map_limits(bad_value):
    response = create_model_info_response(
        model_id="some-model",
        provider="openai",
        llm_router=None,
        get_model_info=lambda _model: _fake_model_info(max_input_tokens=bad_value, max_output_tokens=bad_value),
    )

    assert response["id"] == "some-model"
    assert "max_input_tokens" not in response
    assert "max_output_tokens" not in response


def test_create_model_info_response_keeps_valid_cost_map_limit_beside_malformed_one():
    response = create_model_info_response(
        model_id="some-model",
        provider="openai",
        llm_router=None,
        get_model_info=lambda _model: _fake_model_info(max_input_tokens="128,000", max_output_tokens=16384),
    )

    assert "max_input_tokens" not in response
    assert response["max_output_tokens"] == 16384


def test_create_model_info_response_survives_malformed_limits_registered_by_router():
    """A deployment's model_info is registered into litellm.model_cost verbatim, so a
    malformed configured limit reaches the listing through the real cost-map lookup and
    not just the router index. Guarding only the index path still 500s the whole listing."""
    from litellm import Router

    saved_model_cost = dict(litellm.model_cost)
    try:
        router = Router(
            model_list=[
                {
                    "model_name": "openai/some-unmapped-model",
                    "litellm_params": {"model": "openai/some-unmapped-model"},
                    "model_info": {"max_input_tokens": "128,000"},
                }
            ]
        )

        response = create_model_info_response(
            model_id="openai/some-unmapped-model",
            provider="openai",
            llm_router=router,
        )
    finally:
        litellm.model_cost.clear()
        litellm.model_cost.update(saved_model_cost)

    assert response["id"] == "openai/some-unmapped-model"
    assert "max_input_tokens" not in response


def test_create_model_info_response_emits_integer_token_counts():
    response = create_model_info_response(
        model_id="some-model",
        provider="openai",
        llm_router=None,
        get_model_info=lambda _model: _fake_model_info(max_input_tokens=128000, max_output_tokens=16384),
    )

    assert isinstance(response["max_input_tokens"], int)
    assert isinstance(response["max_output_tokens"], int)


def test_create_model_info_response_omits_unknown_individual_limit():
    response = create_model_info_response(
        model_id="some-embedding",
        provider="openai",
        llm_router=None,
        get_model_info=lambda _model: _fake_model_info(max_input_tokens=8191),
    )

    assert response["max_input_tokens"] == 8191
    assert "max_output_tokens" not in response


def test_create_model_info_response_omits_limits_when_lookup_raises():
    response = create_model_info_response(
        model_id="openai/*",
        provider="openai",
        llm_router=None,
        get_model_info=_raise_unmapped,
    )

    assert response["id"] == "openai/*"
    assert "max_input_tokens" not in response
    assert "max_output_tokens" not in response


def test_create_model_info_response_no_router_keeps_base_fields():
    response = create_model_info_response(
        model_id="totally-unknown-model-xyz",
        provider="openai",
        llm_router=None,
        get_model_info=_raise_unmapped,
    )

    assert response == {
        "id": "totally-unknown-model-xyz",
        "object": "model",
        "created": response["created"],
        "owned_by": "openai",
    }


def test_create_model_info_response_reads_real_cost_map():
    response = create_model_info_response(model_id="gpt-4o", provider="openai", llm_router=None)

    assert isinstance(response["max_input_tokens"], int)
    assert response["max_input_tokens"] > 0
    assert isinstance(response["max_output_tokens"], int)
    assert response["max_output_tokens"] > 0


def test_create_model_info_response_includes_mode_from_lookup():
    response = create_model_info_response(
        model_id="text-embedding-3-small",
        provider="openai",
        llm_router=None,
        get_model_info=lambda _model: _fake_model_info(mode="embedding"),
    )

    assert response["mode"] == "embedding"


def test_create_model_info_response_omits_mode_when_lookup_raises():
    response = create_model_info_response(
        model_id="my-custom-deployment",
        provider="openai",
        llm_router=None,
        get_model_info=_raise_unmapped,
    )

    assert "mode" not in response


def test_create_model_info_response_omits_non_string_mode():
    response = create_model_info_response(
        model_id="some-model",
        provider="openai",
        llm_router=None,
        get_model_info=lambda _model: _fake_model_info(mode=None),
    )

    assert "mode" not in response


class TestPostCallFailureHookLLMExceptionAlerting:
    """The llm_exceptions alert is for infra / LLM-API failures, not user
    errors (https://github.com/BerriAI/litellm/issues/3395). Already-normalized
    client errors must be excluded so a guardrail content-policy block never
    pages on-call. ProxyException is such an error; before LIT-3751 only
    HTTPException was excluded, so AIM blocks paged as if the LLM API failed."""

    async def _alerted(self, exc) -> bool:
        import asyncio
        from unittest.mock import AsyncMock

        from litellm.proxy._types import AlertType, UserAPIKeyAuth

        proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
        proxy_logging_obj.alert_types = [AlertType.llm_exceptions]
        alerting_handler = AsyncMock()
        with (
            patch.object(proxy_logging_obj, "update_request_status", new=AsyncMock()),
            patch.object(proxy_logging_obj, "alerting_handler", new=alerting_handler),
        ):
            await proxy_logging_obj.post_call_failure_hook(
                request_data={},
                original_exception=exc,
                user_api_key_dict=UserAPIKeyAuth(),
            )
        await asyncio.sleep(0)  # let the fire-and-forget alert task run
        return alerting_handler.called

    @pytest.mark.asyncio
    async def test_proxy_exception_does_not_alert(self):
        from litellm.proxy._types import ProxyException

        exc = ProxyException(
            message="content blocked",
            type="invalid_request_error",
            param=None,
            code=400,
            openai_code="content_policy_violation",
        )
        assert await self._alerted(exc) is False

    @pytest.mark.asyncio
    async def test_http_exception_does_not_alert(self):
        assert await self._alerted(HTTPException(status_code=400, detail="blocked")) is False

    @pytest.mark.asyncio
    async def test_genuine_llm_api_error_still_alerts(self):
        assert await self._alerted(Exception("upstream 503")) is True


class TestPostCallFailureHookProxyExceptionLogging:
    """A guardrail block raises a ProxyException; on an LLM route it must still
    drive proxy-only failure logging (_handle_logging_proxy_only_error) so the
    blocked request is recorded, exactly as the old HTTPException did. Before
    LIT-3751 the classifier only matched HTTPException, so switching AIM to
    ProxyException silently dropped the rejected prompt from failure logs."""

    async def _logged(self, exc, *, request_route) -> bool:
        from unittest.mock import AsyncMock

        from litellm.proxy._types import UserAPIKeyAuth

        proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
        proxy_logging_obj.alert_types = []
        handle_mock = AsyncMock()
        with (
            patch.object(proxy_logging_obj, "update_request_status", new=AsyncMock()),
            patch.object(
                proxy_logging_obj,
                "_handle_logging_proxy_only_error",
                new=handle_mock,
            ),
        ):
            await proxy_logging_obj.post_call_failure_hook(
                request_data={},
                original_exception=exc,
                user_api_key_dict=UserAPIKeyAuth(api_key="sk-test", request_route=request_route),
            )
        return handle_mock.await_count > 0

    def _block(self):
        from litellm.proxy._types import ProxyException

        return ProxyException(
            message="content blocked",
            type="invalid_request_error",
            param=None,
            code=400,
            openai_code="content_policy_violation",
        )

    @pytest.mark.asyncio
    async def test_proxy_exception_on_llm_route_is_logged(self):
        assert await self._logged(self._block(), request_route="/v1/chat/completions") is True

    @pytest.mark.asyncio
    async def test_generic_exception_on_llm_route_is_not_logged(self):
        # A raw provider/unknown exception is logged by the LLM call path, not here.
        assert await self._logged(Exception("upstream 503"), request_route="/v1/chat/completions") is False


class TestShouldUseSmtpSsl:
    def test_port_465_uses_ssl(self, monkeypatch):
        from litellm.proxy.utils import _should_use_smtp_ssl

        monkeypatch.delenv("SMTP_USE_SSL", raising=False)
        assert _should_use_smtp_ssl(smtp_port=465) is True

    def test_smtp_use_ssl_env_var_forces_ssl_on_any_port(self, monkeypatch):
        from litellm.proxy.utils import _should_use_smtp_ssl

        monkeypatch.setenv("SMTP_USE_SSL", "True")
        assert _should_use_smtp_ssl(smtp_port=2465) is True

    def test_port_587_uses_plain_smtp(self, monkeypatch):
        from litellm.proxy.utils import _should_use_smtp_ssl

        monkeypatch.delenv("SMTP_USE_SSL", raising=False)
        assert _should_use_smtp_ssl(smtp_port=587) is False


class TestCreateSmtpConnection:
    def test_port_465_creates_smtp_ssl_with_verified_context(self, monkeypatch):
        import ssl

        from litellm.proxy.utils import _create_smtp_connection

        monkeypatch.delenv("SMTP_USE_SSL", raising=False)
        with (
            patch("smtplib.SMTP_SSL") as mock_smtp_ssl,
            patch("smtplib.SMTP") as mock_smtp,
        ):
            result = _create_smtp_connection(smtp_host="mail.example.com", smtp_port=465, timeout=30.0)

        mock_smtp.assert_not_called()
        assert result is mock_smtp_ssl.return_value
        _, kwargs = mock_smtp_ssl.call_args
        assert kwargs["host"] == "mail.example.com"
        assert kwargs["port"] == 465
        assert kwargs["timeout"] == 30.0
        context = kwargs["context"]
        assert isinstance(context, ssl.SSLContext)
        assert context.verify_mode == ssl.CERT_REQUIRED
        assert context.check_hostname is True

    def test_port_587_creates_plain_smtp(self, monkeypatch):
        from litellm.proxy.utils import _create_smtp_connection

        monkeypatch.delenv("SMTP_USE_SSL", raising=False)
        with (
            patch("smtplib.SMTP_SSL") as mock_smtp_ssl,
            patch("smtplib.SMTP") as mock_smtp,
        ):
            result = _create_smtp_connection(smtp_host="mail.example.com", smtp_port=587, timeout=30.0)

        mock_smtp_ssl.assert_not_called()
        assert result is mock_smtp.return_value
        mock_smtp.assert_called_once_with(host="mail.example.com", port=587, timeout=30.0)


class TestSendEmailStartTls:
    @pytest.mark.asyncio
    async def test_starttls_uses_verified_context(self, monkeypatch):
        import ssl

        from litellm.proxy.utils import send_email

        monkeypatch.setenv("SMTP_HOST", "mail.example.com")
        monkeypatch.setenv("SMTP_PORT", "587")
        monkeypatch.setenv("SMTP_SENDER_EMAIL", "sender@example.com")
        monkeypatch.delenv("SMTP_TLS", raising=False)
        monkeypatch.delenv("SMTP_USE_SSL", raising=False)

        mock_server = MagicMock(spec=smtplib.SMTP)
        with patch("litellm.proxy.utils._create_smtp_connection") as mock_create_connection:
            mock_create_connection.return_value.__enter__.return_value = mock_server
            await send_email(
                receiver_email="receiver@example.com",
                subject="test",
                html="<p>test</p>",
            )

        _, kwargs = mock_server.starttls.call_args
        context = kwargs["context"]
        assert isinstance(context, ssl.SSLContext)
        assert context.verify_mode == ssl.CERT_REQUIRED
        assert context.check_hostname is True


class _RecordingMCPGuardrail(CustomGuardrail):
    """Unified guardrail that masks every text it is handed."""

    def __init__(self, event_hook, masked_text="<MASKED>", raises=None):
        super().__init__(guardrail_name="mcp-output-guardrail", event_hook=event_hook, default_on=True)
        self.masked_text = masked_text
        self.raises = raises
        self.call_count = 0
        self.last_input_type = None

    async def apply_guardrail(self, inputs, request_data, input_type, **kwargs):
        self.call_count += 1
        self.last_input_type = input_type
        if self.raises is not None:
            raise self.raises
        return {"texts": [self.masked_text for _ in inputs.get("texts", [])]}


class _NativeMCPGuardrail(CustomGuardrail):
    """Guardrail that only implements the MCP logging hook (cisco-style)."""

    def __init__(self):
        super().__init__(
            guardrail_name="native-mcp-guardrail",
            event_hook=GuardrailEventHooks.post_mcp_call,
            default_on=True,
        )
        self.considered_count = 0

    def should_run_guardrail(self, data, event_type):
        self.considered_count += 1
        return super().should_run_guardrail(data=data, event_type=event_type)

    async def async_post_mcp_tool_call_hook(self, kwargs, response_obj, start_time, end_time):
        return None


@pytest.fixture
def restore_callbacks():
    """Restore the process-wide callback state post_mcp_call_hook reads.

    ProxyLogging caches callback capabilities keyed on id()s of litellm.callbacks,
    so a restored-but-different list can collide with a stale entry after GC and
    leak a has_guardrail verdict into unrelated tests in the same worker.
    """
    original = list(litellm.callbacks)
    yield
    litellm.callbacks = original
    ProxyLogging._callback_capabilities_cache.clear()


@pytest.mark.asyncio
async def test_post_mcp_call_hook_masks_tool_result(restore_callbacks):
    """A post_mcp_call guardrail must see the tool result text and mask it in the returned result."""
    from mcp.types import CallToolResult, TextContent

    guardrail = _RecordingMCPGuardrail(event_hook=GuardrailEventHooks.post_mcp_call)
    litellm.callbacks = [guardrail]
    proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
    result = CallToolResult(content=[TextContent(type="text", text="jane@example.com")], isError=False)

    returned = await proxy_logging_obj.post_mcp_call_hook(
        response=result,
        request_data={"mcp_tool_name": "echo"},
        user_api_key_dict=None,
    )

    assert guardrail.call_count == 1
    assert guardrail.last_input_type == "response"
    assert [item.text for item in returned.content] == ["<MASKED>"]


@pytest.mark.asyncio
async def test_post_mcp_call_hook_skips_guardrail_configured_for_other_hooks(restore_callbacks):
    """A guardrail not configured for post_mcp_call must not scan MCP tool results."""
    from mcp.types import CallToolResult, TextContent

    guardrail = _RecordingMCPGuardrail(event_hook=GuardrailEventHooks.post_call)
    litellm.callbacks = [guardrail]
    proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
    result = CallToolResult(content=[TextContent(type="text", text="jane@example.com")], isError=False)

    returned = await proxy_logging_obj.post_mcp_call_hook(
        response=result,
        request_data={"mcp_tool_name": "echo"},
        user_api_key_dict=None,
    )

    assert guardrail.call_count == 0
    assert [item.text for item in returned.content] == ["jane@example.com"]


@pytest.mark.asyncio
async def test_post_mcp_call_hook_skips_guardrail_without_apply_guardrail(restore_callbacks):
    """Guardrails that implement async_post_mcp_tool_call_hook are dispatched by the
    logging object, so this hook must not run them a second time."""
    from mcp.types import CallToolResult, TextContent

    guardrail = _NativeMCPGuardrail()
    litellm.callbacks = [guardrail]
    proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
    result = CallToolResult(content=[TextContent(type="text", text="jane@example.com")], isError=False)

    returned = await proxy_logging_obj.post_mcp_call_hook(
        response=result,
        request_data={"mcp_tool_name": "echo"},
        user_api_key_dict=None,
    )

    assert guardrail.considered_count == 0
    assert [item.text for item in returned.content] == ["jane@example.com"]


@pytest.mark.asyncio
async def test_post_mcp_call_hook_propagates_guardrail_block(restore_callbacks):
    """A guardrail rejecting the tool result must raise out of the hook."""
    from mcp.types import CallToolResult, TextContent

    from litellm.exceptions import BlockedPiiEntityError

    guardrail = _RecordingMCPGuardrail(
        event_hook=GuardrailEventHooks.post_mcp_call,
        raises=BlockedPiiEntityError(entity_type="EMAIL_ADDRESS", guardrail_name="mcp-output-guardrail"),
    )
    litellm.callbacks = [guardrail]
    proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
    result = CallToolResult(content=[TextContent(type="text", text="jane@example.com")], isError=False)

    with pytest.raises(BlockedPiiEntityError):
        await proxy_logging_obj.post_mcp_call_hook(
            response=result,
            request_data={"mcp_tool_name": "echo"},
            user_api_key_dict=None,
        )


@pytest.mark.asyncio
async def test_prisma_health_check_failure_names_itself_at_operator_visible_level(caplog):
    """A failing DB health check has to name the check that failed, at a level
    operators actually run at.

    Reporting it as ``disconnect()`` sends anyone grepping the logs to the wrong
    function and reads as "the check never ran", and reporting it only at debug
    level hides a database fault behind a flag nobody enables in production."""
    import logging
    from functools import partial
    from unittest.mock import AsyncMock

    from litellm.proxy.utils import PrismaClient

    client = MagicMock()
    client.db.query_raw = AsyncMock(side_effect=Exception("connection refused"))
    client.proxy_logging_obj.failure_handler = AsyncMock()
    client._probe_target_wrapper = MagicMock(return_value=client.db)
    client._run_health_probe = partial(PrismaClient._run_health_probe, client)
    client._report_health_check_failure = AsyncMock()

    with caplog.at_level(logging.WARNING, logger="LiteLLM Proxy"):
        with pytest.raises(Exception, match="connection refused"):
            await PrismaClient.health_check(client)

    assert "health_check()" in caplog.text
    assert "disconnect()" not in caplog.text
    assert "connection refused" in caplog.text


@pytest.mark.asyncio
async def test_prisma_connect_failure_is_reported_at_operator_visible_level(caplog):
    """The sibling connect failure is labelled correctly but was equally
    invisible. A database the proxy could not connect to at startup must not be
    a debug-only record."""
    import logging
    from unittest.mock import AsyncMock

    from litellm.proxy.utils import PrismaClient

    client = MagicMock()
    client.db.is_connected = MagicMock(return_value=False)
    client.db.connect = AsyncMock(side_effect=Exception("could not reach database"))
    client.proxy_logging_obj.failure_handler = AsyncMock()

    with caplog.at_level(logging.WARNING, logger="LiteLLM Proxy"):
        with pytest.raises(Exception, match="could not reach database"):
            await PrismaClient.connect(client)

    assert "connect()" in caplog.text
    assert "could not reach database" in caplog.text


@pytest.mark.asyncio
async def test_prisma_health_check_failure_redacts_database_credentials(caplog):
    """Raising the level must not widen what reaches the logs. The exception
    text can carry a full connection string, so the credential has to be gone
    from the emitted record."""
    import logging
    from functools import partial
    from unittest.mock import AsyncMock

    from litellm.proxy.utils import PrismaClient

    client = MagicMock()
    client.db.query_raw = AsyncMock(
        side_effect=Exception("could not connect to postgresql://admin:hunter2@db.internal:5432/litellm")
    )
    client.proxy_logging_obj.failure_handler = AsyncMock()
    client._probe_target_wrapper = MagicMock(return_value=client.db)
    client._run_health_probe = partial(PrismaClient._run_health_probe, client)
    client._report_health_check_failure = AsyncMock()

    with caplog.at_level(logging.WARNING, logger="LiteLLM Proxy"):
        with pytest.raises(Exception, match="could not connect to"):
            await PrismaClient.health_check(client)

    emitted = [record.getMessage() for record in caplog.records if record.name == "LiteLLM Proxy"]

    assert emitted
    assert all("hunter2" not in message for message in emitted)
    assert any("postgresql://REDACTED@db.internal" in message for message in emitted)


@pytest.mark.asyncio
async def test_update_data_key_branch_stamps_settings_updated_at():
    """`updated_at` carries Prisma's @updatedAt and is rewritten by every spend
    flush, so key config edits need their own audit column."""
    from datetime import datetime, timezone
    from unittest.mock import AsyncMock

    from litellm.proxy.utils import PrismaClient

    client = MagicMock()
    client.jsonify_object = MagicMock(side_effect=lambda data: dict(data))
    client.db.litellm_verificationtoken.update = AsyncMock(return_value=None)

    before = datetime.now(timezone.utc)
    await PrismaClient.update_data(client, token="sk-test-key", data={"models": ["gpt-4"]})
    after = datetime.now(timezone.utc)

    sent = client.db.litellm_verificationtoken.update.call_args.kwargs["data"]
    assert sent["models"] == ["gpt-4"]
    assert before <= sent["settings_updated_at"] <= after


@pytest.mark.asyncio
async def test_post_mcp_call_hook_skips_opted_out_guardrail(restore_callbacks):
    """A guardrail that keeps its native lifecycle hooks must not have MCP tool results
    scanned through the unified path, even though it implements apply_guardrail."""
    from mcp.types import CallToolResult, TextContent

    class _OptedOutMCPGuardrail(_RecordingMCPGuardrail):
        # apply_guardrail is redefined rather than inherited because the dispatch check
        # reads the leaf class __dict__, so an inherited override would skip for the
        # wrong reason and leave the flag untested
        use_native_lifecycle_hooks = True

        async def apply_guardrail(self, inputs, request_data, input_type, **kwargs):
            return await super().apply_guardrail(inputs, request_data, input_type, **kwargs)

    guardrail = _OptedOutMCPGuardrail(event_hook=GuardrailEventHooks.post_mcp_call)
    litellm.callbacks = [guardrail]
    proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
    result = CallToolResult(content=[TextContent(type="text", text="jane@example.com")], isError=False)

    returned = await proxy_logging_obj.post_mcp_call_hook(
        response=result,
        request_data={"mcp_tool_name": "echo"},
        user_api_key_dict=None,
    )

    assert guardrail.call_count == 0
    assert [item.text for item in returned.content] == ["jane@example.com"]


FAILURE_USAGE_MODEL = "gpt-4o"
ONE_USER_MESSAGE = [{"role": "user", "content": "hi"}]


class _LoggingObj:
    def __init__(self, model_call_details):
        self.model_call_details = model_call_details


@pytest.mark.parametrize(
    "system_input, expected",
    [
        ("be brief", "be brief"),
        ([{"type": "text", "text": "a"}, {"type": "text", "text": "b"}], "ab"),
        (["a", {"text": "b"}], "ab"),
        ([{"type": "image"}], ""),
        (None, ""),
        (17, ""),
    ],
)
def test_a_system_prompt_reads_the_same_whatever_shape_it_arrived_in(system_input, expected):
    from litellm.proxy.utils import _system_prompt_text

    assert _system_prompt_text(system_input) == expected


def test_a_system_prompt_is_counted_on_top_of_the_request():
    from litellm.proxy.utils import _count_request_input_tokens

    without = _count_request_input_tokens(FAILURE_USAGE_MODEL, "hello world", None)
    with_system = _count_request_input_tokens(FAILURE_USAGE_MODEL, "hello world", "be brief")

    assert without > 0
    assert with_system > without


def test_a_request_with_nothing_in_it_counts_zero():
    from litellm.proxy.utils import _count_request_input_tokens

    assert _count_request_input_tokens(FAILURE_USAGE_MODEL, [], None) == 0
    assert _count_request_input_tokens(FAILURE_USAGE_MODEL, None, None) == 0


def test_a_failed_dispatch_is_estimated_as_input_only():
    from litellm.proxy.utils import _count_request_input_tokens, _estimate_dispatched_failure_usage

    usage = _estimate_dispatched_failure_usage(FAILURE_USAGE_MODEL, ONE_USER_MESSAGE, None)

    assert usage is not None
    assert usage.prompt_tokens == _count_request_input_tokens(FAILURE_USAGE_MODEL, ONE_USER_MESSAGE, None)
    assert usage.completion_tokens == 0
    assert usage.total_tokens == usage.prompt_tokens


@pytest.mark.parametrize("request_input", [[], object()])
def test_nothing_is_estimated_when_there_is_nothing_to_count(request_input):
    from litellm.proxy.utils import _estimate_dispatched_failure_usage

    assert _estimate_dispatched_failure_usage(FAILURE_USAGE_MODEL, request_input, None) is None


def test_usage_the_stream_already_recovered_beats_an_estimate():
    from litellm.proxy.utils import _failure_usage_to_lift
    from litellm.types.utils import Usage

    recovered = Usage(prompt_tokens=5, completion_tokens=7, total_tokens=12)

    lifted = _failure_usage_to_lift(
        model_call_details={"combined_usage_object": recovered, "response_cost": 0.25},
        request_body={},
        dispatched=True,
    )

    assert lifted == (recovered, 0.25)


def test_a_request_that_reached_a_provider_bills_its_input_at_no_cost():
    from litellm.proxy.utils import _failure_usage_to_lift

    lifted = _failure_usage_to_lift(
        model_call_details={
            "call_type": "acompletion",
            "model": FAILURE_USAGE_MODEL,
            "messages": ONE_USER_MESSAGE,
        },
        request_body={},
        dispatched=True,
    )

    assert lifted is not None
    usage, response_cost = lifted
    assert usage.prompt_tokens > 0
    assert usage.completion_tokens == 0
    assert response_cost == 0.0


@pytest.mark.parametrize(
    "model_call_details, dispatched",
    [
        ({"call_type": "acompletion", "model": FAILURE_USAGE_MODEL, "messages": ONE_USER_MESSAGE}, False),
        (
            {
                "litellm_no_upstream_llm_call": True,
                "call_type": "acompletion",
                "model": FAILURE_USAGE_MODEL,
                "messages": ONE_USER_MESSAGE,
            },
            True,
        ),
        ({"call_type": "afile_content", "model": FAILURE_USAGE_MODEL, "messages": ONE_USER_MESSAGE}, True),
    ],
    ids=["never dispatched", "no upstream call", "call type has no input to price"],
)
def test_a_failure_that_cost_the_provider_nothing_lifts_nothing(model_call_details, dispatched):
    from litellm.proxy.utils import _failure_usage_to_lift

    assert _failure_usage_to_lift(model_call_details=model_call_details, request_body={}, dispatched=dispatched) is None


def test_the_no_upstream_call_key_the_module_uses_is_the_one_asserted_above():
    from litellm.constants import LITELLM_LOGGING_NO_UPSTREAM_LLM_CALL

    assert LITELLM_LOGGING_NO_UPSTREAM_LLM_CALL == "litellm_no_upstream_llm_call"


def test_the_dispatched_system_prompt_wins_over_the_one_in_the_request_body():
    from litellm.proxy.utils import _failure_usage_to_lift

    def lift(model_call_details, request_body):
        lifted = _failure_usage_to_lift(
            model_call_details=model_call_details, request_body=request_body, dispatched=True
        )
        assert lifted is not None
        return lifted[0].prompt_tokens

    base = {
        "call_type": "aanthropic_messages",
        "model": FAILURE_USAGE_MODEL,
        "messages": ONE_USER_MESSAGE,
    }
    long_system = "answer as briefly as you possibly can, in one short sentence"

    from_body = lift(base, {"system": long_system})
    from_params = lift({**base, "optional_params": {"system": "x"}}, {"system": long_system})
    body_only_short = lift(base, {"system": "x"})

    assert from_body > body_only_short
    assert from_params == body_only_short


def test_a_failure_with_no_logging_object_lifts_nothing():
    from litellm.proxy.utils import _failure_fields_to_lift

    assert dict(_failure_fields_to_lift({})) == {}
    assert dict(_failure_fields_to_lift({"litellm_logging_obj": _LoggingObj({})})) == {}


def test_a_dispatched_failure_lifts_the_four_fields_the_spend_log_needs():
    from litellm.proxy.utils import _failure_fields_to_lift

    lifted = _failure_fields_to_lift(
        {
            "litellm_logging_obj": _LoggingObj(
                {
                    "first_api_call_start_time": 1700000000.0,
                    "call_type": "acompletion",
                    "model": FAILURE_USAGE_MODEL,
                    "messages": ONE_USER_MESSAGE,
                    "standard_logging_object": {"id": "log-1"},
                }
            )
        }
    )

    assert set(lifted) == {
        "first_api_call_start_time",
        "combined_usage_object",
        "response_cost",
        "standard_logging_object",
    }
    assert lifted["first_api_call_start_time"] == 1700000000.0
    assert lifted["response_cost"] == 0.0
    assert lifted["combined_usage_object"].prompt_tokens > 0
    assert lifted["standard_logging_object"] == {"id": "log-1"}


@pytest.mark.asyncio
async def test_proxy_only_error_expected_4xx_skips_traceback_for_both_handlers(monkeypatch):
    """Regression for LIT-6043: an expected 4xx must not format a traceback for
    either the async or the threaded sync failure handler."""
    import asyncio

    import litellm
    from litellm.litellm_core_utils.litellm_logging import Logging
    from litellm.proxy._types import UserAPIKeyAuth

    monkeypatch.setattr(litellm, "failure_callback", [])
    proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
    captured = {}
    sync_ran = asyncio.Event()
    loop = asyncio.get_running_loop()

    async def fake_async_failure(self, exception, traceback_exception, *args, **kwargs):
        captured["async_traceback"] = traceback_exception

    def fake_sync_failure(self, exception, traceback_exception, *args, **kwargs):
        captured["sync_traceback"] = traceback_exception
        loop.call_soon_threadsafe(sync_ran.set)

    orig_async_failure = Logging.async_failure_handler
    orig_sync_failure = Logging.failure_handler
    Logging.async_failure_handler = fake_async_failure
    Logging.failure_handler = fake_sync_failure
    try:
        try:
            raise HTTPException(status_code=400, detail="Invalid model name passed in")
        except HTTPException as exc:
            await proxy_logging_obj._handle_logging_proxy_only_error(
                request_data={
                    "model": "does-not-exist",
                    "messages": [{"role": "user", "content": "hi"}],
                },
                user_api_key_dict=UserAPIKeyAuth(api_key="sk-1234", request_route="/v1/chat/completions"),
                route="/v1/chat/completions",
                original_exception=exc,
            )
        await asyncio.wait_for(sync_ran.wait(), timeout=5)
    finally:
        Logging.async_failure_handler = orig_async_failure
        Logging.failure_handler = orig_sync_failure

    assert captured["async_traceback"] == ""
    assert captured["sync_traceback"] == ""


@pytest.mark.asyncio
async def test_proxy_only_error_5xx_keeps_traceback_and_runs_sync_callbacks(monkeypatch):
    """Unexpected (5xx) errors keep the full traceback, and a configured
    sync-only failure callback still gets its threaded handler."""
    import asyncio

    import litellm
    from litellm.litellm_core_utils.litellm_logging import Logging
    from litellm.proxy._types import UserAPIKeyAuth

    def _custom_sync_callback(kwargs, completion_response, start_time, end_time):
        pass

    monkeypatch.setattr(litellm, "failure_callback", [_custom_sync_callback])
    proxy_logging_obj = ProxyLogging(user_api_key_cache=DualCache())
    captured = {}
    sync_ran = asyncio.Event()
    loop = asyncio.get_running_loop()

    async def fake_async_failure(self, exception, traceback_exception, *args, **kwargs):
        captured["async_traceback"] = traceback_exception

    def fake_sync_failure(self, *args, **kwargs):
        loop.call_soon_threadsafe(sync_ran.set)

    orig_async_failure = Logging.async_failure_handler
    orig_sync_failure = Logging.failure_handler
    Logging.async_failure_handler = fake_async_failure
    Logging.failure_handler = fake_sync_failure
    try:
        try:
            raise HTTPException(status_code=500, detail="internal error")
        except HTTPException as exc:
            await proxy_logging_obj._handle_logging_proxy_only_error(
                request_data={
                    "model": "gpt-4o",
                    "messages": [{"role": "user", "content": "hi"}],
                },
                user_api_key_dict=UserAPIKeyAuth(api_key="sk-1234", request_route="/v1/chat/completions"),
                route="/v1/chat/completions",
                original_exception=exc,
            )
        await asyncio.wait_for(sync_ran.wait(), timeout=5)
    finally:
        Logging.async_failure_handler = orig_async_failure
        Logging.failure_handler = orig_sync_failure

    assert "test_proxy_utils" in captured["async_traceback"]