"""进程重启后的归档恢复集成测试。

场景：某次手术结束后写库失败 → ArchivePersister 将明细写入 durable fallback 目录。
之后 API 进程重启（相当于重新 ``create_app()``）时，``AppContainer.start()`` 会调用
``camera_session_manager.start_archive_retry_loop()`` → ``recover_from_durable_fallback()``，
把磁盘上的待落库归档读回内存；随后走真实 DB 写入路径将其成功持久化。
"""

from __future__ import annotations

import asyncio
import json
from collections.abc import AsyncGenerator
from datetime import datetime, timezone

import pytest
import pytest_asyncio
from fastapi.testclient import TestClient
from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine

import app.db.models  # noqa: F401 register ORM tables
import main as main_module
from app.baked import pipeline as bp
from app.db.base import Base
from app.dependencies import AppContainer, build_container
from app.domain.consumption import SurgeryConsumptionStored
from app.services.video.archive_persister import _serialize_details


@pytest_asyncio.fixture
async def sqlite_factory() -> AsyncGenerator[async_sessionmaker[AsyncSession], None]:
    engine = create_async_engine("sqlite+aiosqlite:///:memory:")
    async with engine.begin() as conn:
        await conn.run_sync(Base.metadata.create_all)
    factory = async_sessionmaker(
        engine,
        class_=AsyncSession,
        expire_on_commit=False,
        autoflush=False,
        autobegin=False,
    )
    yield factory
    await engine.dispose()


def _seed_durable_fallback(directory, surgery_id: str) -> None:
    directory.mkdir(parents=True, exist_ok=True)
    details = [
        SurgeryConsumptionStored(
            item_id="item-1",
            item_name="纱布",
            qty=2,
            doctor_id="voice",
            timestamp=datetime(2026, 4, 23, 12, 0, tzinfo=timezone.utc),
            source="voice",
        ),
    ]
    payload = {
        "surgery_id": surgery_id,
        "saved_at": datetime.now(timezone.utc).isoformat(),
        "details": _serialize_details(details),
    }
    (directory / f"{surgery_id}.json").write_text(
        json.dumps(payload, ensure_ascii=False, indent=2),
        encoding="utf-8",
    )


def test_durable_fallback_recovers_on_startup_and_persists(
    monkeypatch: pytest.MonkeyPatch,
    sqlite_factory: async_sessionmaker[AsyncSession],
    tmp_path,
) -> None:
    durable_dir = tmp_path / "pending_archive"
    surgery_id = "200001"
    _seed_durable_fallback(durable_dir, surgery_id)
    assert (durable_dir / f"{surgery_id}.json").exists()

    async def _noop() -> None:
        return None

    monkeypatch.setattr(main_module, "check_database", _noop)

    class _FakeEngine:
        async def dispose(self) -> None:
            return None

    monkeypatch.setattr(main_module, "engine", _FakeEngine())

    from app.config import settings as real_settings

    monkeypatch.setattr(
        bp,
        "ARCHIVE_PERSIST_DURABLE_FALLBACK_DIR",
        str(durable_dir),
    )
    monkeypatch.setattr(bp, "ARCHIVE_PERSIST_RETRY_INTERVAL_SECONDS", 5.0)

    def _build(*_a, **_kw) -> AppContainer:
        return build_container(real_settings, session_factory=sqlite_factory)

    monkeypatch.setattr(main_module, "build_container", _build)

    app = main_module.create_app()
    with TestClient(app) as client:
        container: AppContainer = client.app.state.container
        archive = container.camera_session_manager._archive
        assert archive.archived_details(surgery_id) is not None

        ok = asyncio.get_event_loop().run_until_complete(
            archive.try_persist_archive(surgery_id)
        )
        assert ok, "Expected immediate retry to persist against sqlite"
        assert archive.archived_details(surgery_id) is None
        assert not (durable_dir / f"{surgery_id}.json").exists()

        r = client.get(f"/client/surgeries/{surgery_id}/result")
        assert r.status_code == 200, r.text
        body = r.json()
        assert len(body["details"]) == 1
        assert body["details"][0]["item_name"] == "纱布"
        assert body["details"][0]["qty"] == 2