from __future__ import annotations

from datetime import datetime, timezone

import pytest
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine

import app.db.models  # noqa: F401
from app.db.base import Base
from app.db.models import SurgeryResultDetailRow
from app.domain.consumption import SurgeryConsumptionStored
from app.repositories.surgery_results import SurgeryResultRepository


@pytest.fixture
async def db_session() -> AsyncSession:
    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)
    session = factory()
    yield session
    await session.close()
    await engine.dispose()


@pytest.mark.asyncio
async def test_save_empty_then_load(db_session: AsyncSession) -> None:
    repo = SurgeryResultRepository()
    async with db_session.begin():
        await repo.save_final_result(db_session, surgery_id="123456", details=[])
    async with db_session.begin():
        loaded = await repo.load_final_details(db_session, "123456")
    assert loaded == []


@pytest.mark.asyncio
async def test_save_roundtrip(db_session: AsyncSession) -> None:
    repo = SurgeryResultRepository()
    ts = datetime(2026, 4, 21, 10, 0, tzinfo=timezone.utc)
    details = [
        SurgeryConsumptionStored(
            item_id="纱布",
            item_name="纱布",
            qty=1,
            doctor_id="D1",
            timestamp=ts,
            source="vision",
        ),
        SurgeryConsumptionStored(
            item_id="纱布",
            item_name="纱布",
            qty=1,
            doctor_id="voice",
            timestamp=ts,
            source="voice",
        ),
    ]
    async with db_session.begin():
        await repo.save_final_result(db_session, surgery_id="654321", details=details)
    async with db_session.begin():
        loaded = await repo.load_final_details(db_session, "654321")
    assert loaded is not None
    assert len(loaded) == 2
    assert loaded[0].qty == 1 and loaded[0].item_id == "纱布"
    assert loaded[1].qty == 1
    async with db_session.begin():
        res = await db_session.execute(
            select(SurgeryResultDetailRow)
            .where(SurgeryResultDetailRow.surgery_id == "654321")
            .order_by(SurgeryResultDetailRow.id)
        )
        orm_rows = res.scalars().all()
    assert orm_rows[0].source == "vision"
    assert orm_rows[1].source == "voice"


@pytest.mark.asyncio
async def test_missing_surgery_returns_none(db_session: AsyncSession) -> None:
    repo = SurgeryResultRepository()
    async with db_session.begin():
        missing = await repo.load_final_details(db_session, "000000")
    assert missing is None


@pytest.mark.asyncio
async def test_save_overwrites_previous_final_result(db_session: AsyncSession) -> None:
    repo = SurgeryResultRepository()
    ts1 = datetime(2026, 4, 21, 9, 0, tzinfo=timezone.utc)
    ts2 = datetime(2026, 4, 21, 10, 0, tzinfo=timezone.utc)
    async with db_session.begin():
        await repo.save_final_result(
            db_session,
            surgery_id="888888",
            details=[
                SurgeryConsumptionStored(
                    item_id="旧",
                    item_name="旧",
                    qty=1,
                    doctor_id="D1",
                    timestamp=ts1,
                    source="vision",
                ),
            ],
        )
    async with db_session.begin():
        await repo.save_final_result(
            db_session,
            surgery_id="888888",
            details=[
                SurgeryConsumptionStored(
                    item_id="新",
                    item_name="新",
                    qty=2,
                    doctor_id="D2",
                    timestamp=ts2,
                    source="voice",
                ),
            ],
        )
    async with db_session.begin():
        loaded = await repo.load_final_details(db_session, "888888")
    assert loaded is not None
    assert len(loaded) == 1
    assert loaded[0].item_id == "新"
    assert loaded[0].qty == 2