"""replay/conversation 响应携带服务端 elapsed 字段。"""

from __future__ import annotations

from datetime import datetime, timezone

import pytest
from httpx import ASGITransport, AsyncClient

from app.features.evaluation.internal_auth import get_internal_eval_principal
from app.features.evaluation.replay_service import ReplayServerTiming


@pytest.mark.asyncio
async def test_replay_conversation_includes_server_elapsed_ms(
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    from fastapi import FastAPI

    monkeypatch.setattr(
        "app.core.config.settings.internal_eval_api_key",
        "secret",
        raising=False,
    )
    from app.features.evaluation.deps import get_replay_conversation_service
    from app.features.evaluation.router import router

    t0 = datetime(2026, 4, 9, 10, 0, 0, tzinfo=timezone.utc)
    t1 = datetime(2026, 4, 9, 10, 0, 1, tzinfo=timezone.utc)

    class _FakeReplay:
        async def replay_utterances(self, **kwargs):
            return (
                1,
                ["seg-a"],
                ReplayServerTiming(
                    started_at_utc=t0,
                    finished_at_utc=t1,
                    elapsed_ms=150,
                ),
            )

    app = FastAPI()
    app.include_router(router, prefix="/internal/api/evaluation")

    async def _override_auth():
        from app.features.evaluation.internal_auth import InternalEvalPrincipal

        return InternalEvalPrincipal()

    app.dependency_overrides[get_internal_eval_principal] = _override_auth
    app.dependency_overrides[get_replay_conversation_service] = lambda: _FakeReplay()

    transport = ASGITransport(app=app)
    async with AsyncClient(transport=transport, base_url="http://t") as client:
        r = await client.post(
            "/internal/api/evaluation/replay/conversation",
            headers={"X-Internal-Eval-Key": "secret"},
            json={
                "conversation_id": "00000000-0000-0000-0000-000000000099",
                "user_utterances": ["hi"],
                "flush_memoir_after": False,
                "skip_memoir": True,
                "skip_tts": True,
            },
        )
    assert r.status_code == 200
    body = r.json()
    assert body["elapsed_ms"] == 150
    assert body["started_at_utc"] is not None
    assert body["finished_at_utc"] is not None