"""D2 选股 Job 化测试：kind=selection 异步执行（executor + API 提交/轮询）。"""

from __future__ import annotations

from datetime import date, datetime

import pytest
from app.api import deps
from app.application.services import job_executor as je
from app.domain.entities.market import Stock
from app.domain.entities.research import JobRecord, JobStatus
from app.domain.entities.selection import SelectionQuery, SelectionResult
from app.infrastructure.persistence.sqlalchemy.base import Base
from app.infrastructure.persistence.sqlalchemy.repositories.jobs_impl import (
    SqlAlchemyExperimentRepository,
    SqlAlchemyJobRepository,
)
from app.infrastructure.persistence.sqlalchemy.repositories.market_impl import (
    SqlAlchemyDailyBarRepository,
    SqlAlchemyStockRepository,
)
from app.main import app
from fastapi.testclient import TestClient
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker

from conftest_quant import bars_dataframe_to_daily_bars, synthetic_daily

_SYMS = ["600000.SH", "600001.SH", "600002.SH", "600003.SH", "600004.SH"]


def _query(symbols=_SYMS) -> SelectionQuery:
    return SelectionQuery(
        universe={"exclude_st": False, "min_listing_days": 0, "symbols": list(symbols)},
        factors=[{"name": "momentum_60", "weight": 1.0}],
        top_n=3,
        as_of=date(2024, 12, 31),
    )


@pytest.fixture()
def engine_session(tmp_path):
    engine = create_engine(f"sqlite:///{tmp_path / 'db.db'}", future=True)
    Base.metadata.create_all(engine)
    Session = sessionmaker(bind=engine, expire_on_commit=False)
    df = synthetic_daily({s: 0.006 - 0.0015 * i for i, s in enumerate(_SYMS)}, n=320)
    with Session() as session:
        SqlAlchemyStockRepository(session).upsert_many(
            [Stock(symbol=s, name=f"测试{i}", list_date=date(1999, 1, 1)) for i, s in enumerate(_SYMS)]
        )
        SqlAlchemyDailyBarRepository(session).upsert_many(bars_dataframe_to_daily_bars(df))
        session.commit()
    return Session


class TestSelectionJobExecutor:
    def test_execute_and_archive(self, engine_session) -> None:
        Session = engine_session
        with Session() as session:
            SqlAlchemyJobRepository(session).create(
                JobRecord(id="JOB-SEL-1", kind="selection",
                          spec_json=_query().model_dump_json(),
                          status=JobStatus.QUEUED, created_at=datetime.now())
            )
            session.commit()
        je.execute_job(
            "JOB-SEL-1",
            session_factory=Session,
            job_repo_factory=lambda s: SqlAlchemyJobRepository(s),
            experiment_repo_factory=lambda s: SqlAlchemyExperimentRepository(s),
            stock_repo_factory=lambda s: SqlAlchemyStockRepository(s),
            daily_repo_factory=lambda s: SqlAlchemyDailyBarRepository(s),
            engine=None,
        )
        with Session() as session:
            job = SqlAlchemyJobRepository(session).get("JOB-SEL-1")
            exp = SqlAlchemyExperimentRepository(session).get(job.experiment_id or "")
        assert job.status == JobStatus.SUCCESS
        result = SelectionResult.model_validate_json(job.result_json or "{}")
        assert len(result.candidates) == 3
        assert exp is not None and exp.kind == "selection"
        assert "as_of" in (exp.summary_text or "") and "选出 3" in (exp.summary_text or "")


class TestSelectionJobApi:
    @pytest.fixture()
    def client(self, tmp_path, monkeypatch):
        from app.infrastructure.persistence.sqlalchemy import session as sess_mod

        engine = create_engine(f"sqlite:///{tmp_path / 'api.db'}", future=True)
        Base.metadata.create_all(engine)
        Session = sessionmaker(bind=engine, expire_on_commit=False)
        monkeypatch.setattr(sess_mod, "SessionLocal", Session)
        df = synthetic_daily({s: 0.006 - 0.0015 * i for i, s in enumerate(_SYMS)}, n=320)
        with Session() as session:
            SqlAlchemyStockRepository(session).upsert_many(
                [Stock(symbol=s, name=f"测试{i}", list_date=date(1999, 1, 1))
                 for i, s in enumerate(_SYMS)]
            )
            SqlAlchemyDailyBarRepository(session).upsert_many(bars_dataframe_to_daily_bars(df))
            session.commit()

        def _session_override():
            with Session() as s:
                yield s

        app.dependency_overrides[deps.get_session] = _session_override
        with TestClient(app) as c:
            yield c
        app.dependency_overrides.clear()

    def test_submit_poll(self, client) -> None:
        body = _query().model_dump(mode="json")
        resp = client.post("/api/selections/jobs", json=body)
        assert resp.status_code == 200
        job_id = resp.json()["job_id"]
        state = None
        for _ in range(40):
            state = client.get(f"/api/jobs/{job_id}").json()
            if state["status"] in ("success", "failed", "cancelled"):
                break
        assert state["status"] == "success"
        result = state["result"]
        assert result is not None and len(result["candidates"]) == 3
        assert result["statistics"]["selected"] == 3
        # 实验归档存在（selection 类型）
        exps = client.get("/api/experiments").json()
        assert any(e["kind"] == "selection" for e in exps)