"""스윙 청산 하드닝 R2 (2026-10-09) 회귀 테스트.

1. 결과 불명 매도 대기(_pending_unknown_sells)의 Redis 영속화·재기동 복원
   - 재기동 후 복원 → KIS 잔고 대조로 장부 반영, 같은 분할 단계 재발동 없음
   - 전량 체결 후 보유 목록에서 빠진 종목도 대조(유령 ActiveTrade 방지)
   - Redis 일시 장애로 복원 실패 → 분할 익절만 1주기 보류, 손절은 진행
2/3. 체결 확인·Portfolio sync 백그라운드 태스크가 trade_executor 추적 레지스트리
   (spawn_tracked_task_v2 → drain_tracked_tasks_v2) 를 탄다

규약(CLAUDE.md §4.1): 주문 목은 공통 종단(safe_place_order) — r5 테스트의 _Sim 재사용.
"""
import asyncio
import logging
from unittest.mock import AsyncMock, MagicMock

import pytest

from app.core.config import settings  # noqa: F401  (기대값은 settings/모듈 상수 참조)
from app.services.mean_reversion_strategy import ExitSignal
from test_swing_r5_pending_sell_20261002 import (  # noqa: F401  (_reset: autouse 픽스처)
    UNKNOWN, _Sim, _partial_signal, _reset,
)


class _FakeRedis:
    """hset/hdel/hgetall/expire 만 흉내. fail_reads 회만큼 hgetall 이 예외."""

    def __init__(self, fail_reads=0):
        self.h: dict[str, dict[str, str]] = {}
        self.fail_reads = fail_reads
        self.reads = 0

    async def hset(self, key, field, value):
        self.h.setdefault(key, {})[field] = value

    async def hdel(self, key, field):
        self.h.get(key, {}).pop(field, None)

    async def expire(self, key, ttl):
        return True

    async def hgetall(self, key):
        self.reads += 1
        if self.reads <= self.fail_reads:
            raise ConnectionError("redis down")
        return dict(self.h.get(key, {}))


@pytest.fixture(autouse=True)
def _r2_reset(monkeypatch):
    import app.services.swing.exit_service as es
    monkeypatch.setattr(es, "_unknown_sells_restore_state", "pending")
    monkeypatch.setattr(es, "_unknown_sells_restore_failures", 0)
    # 체결 확인 백그라운드(delay=3s 후 KIS 조회)가 테스트 종료 뒤 남지 않게 — 기록형 목
    import app.services.trade_executor as te
    monkeypatch.setattr(te, "_verify_and_sync_execution_v3", AsyncMock())


def _use_redis(monkeypatch, fake):
    import app.core.redis as r
    monkeypatch.setattr(r, "get_redis", lambda: fake)


def _restart(es):
    """프로세스 재기동 흉내 — 인메모리 상태만 사라진다(Redis·KIS·DB 장부는 유지)."""
    es._pending_unknown_sells.clear()
    es._recent_exits.clear()
    es._unknown_sells_restore_state = "pending"
    es._unknown_sells_restore_failures = 0


# ── 1. 영속화·복원 ───────────────────────────────────────────────────────────

@pytest.mark.asyncio
async def test_unknown_partial_survives_restart_no_stage_refire(monkeypatch):
    """[재현 반전] 50% 익절 10주 결과 불명(실제 체결) 직후 재기동. 이전: 대기 소실 →
    remaining_pct 1.0 그대로 → 같은 단계 재발동으로 10주 추가 매도. 이제: Redis 복원 →
    대조로 SELL 기록·remaining_pct=0.5 → 재발동 없음."""
    fake = _FakeRedis()
    _use_redis(monkeypatch, fake)
    sim = _Sim(monkeypatch, swing=20, dt=5, price=11500, signal=_partial_signal, responses=[UNKNOWN])
    await sim.cycles(1)
    es = sim.es
    assert "005930" in es._pending_unknown_sells
    key = es._unknown_sells_redis_key_v2()
    assert "005930" in fake.h[key]  # 등록 시 미러링

    _restart(es)
    await sim.cycles(3)

    assert sum(sim.sent) == 10
    assert sim.at.remaining_pct == 0.5
    assert any("결과 불명" in (p.get("exit_reason") or "") for p in sim.history)
    assert "005930" not in fake.h.get(key, {})  # 대조 후 Redis 에서도 해제
    assert es._pending_unknown_sells == {}


@pytest.mark.asyncio
async def test_unknown_full_fill_restart_row_gone_closes_active_trade(monkeypatch):
    """전량 손절 불명(체결) → 재기동 → sync 가 Portfolio 행을 지워 보유 목록에 없음.
    이전: 루프에 안 들어와 대조 불가 → ActiveTrade 유령. 이제: 보유 목록 밖 대조로 close+loss."""
    fake = _FakeRedis()
    _use_redis(monkeypatch, fake)
    sim = _Sim(monkeypatch, swing=10, dt=0, responses=[UNKNOWN])
    await sim.cycles(1)
    es = sim.es
    assert sim.kis["hldg"] == 0 and sim.closed == 0

    _restart(es)
    monkeypatch.setattr(es, "get_swing_holdings", AsyncMock(return_value=[]))
    await sim.cycles(1)

    assert sim.closed == 1
    sim.loss.assert_awaited()
    assert es._pending_unknown_sells == {}
    assert fake.h.get(es._unknown_sells_redis_key_v2(), {}) == {}


@pytest.mark.asyncio
async def test_memory_entry_wins_over_redis_on_restore(monkeypatch):
    import app.services.swing.exit_service as es
    fake = _FakeRedis()
    _use_redis(monkeypatch, fake)
    stale = {"qty": 99, "pre_hldg": 99, "price": 1, "avg_price": 1, "swing_qty": 99, "sell_pct": 1.0,
             "remaining_pct": 1.0, "original_qty": 99, "filter_not_dt": False,
             "had_active_trade": True, "stock_name": "T", "reason": "x"}
    await es._persist_unknown_sell_v2("005930", stale)
    es._pending_unknown_sells["005930"] = dict(stale, qty=5)
    assert await es._restore_unknown_sells_v2() is False
    assert es._pending_unknown_sells["005930"]["qty"] == 5


@pytest.mark.asyncio
async def test_malformed_redis_entry_skipped_with_error(monkeypatch, caplog):
    import app.services.swing.exit_service as es
    fake = _FakeRedis()
    fake.h[es._unknown_sells_redis_key_v2()] = {"005930": "{not json", "000660": '{"qty": 3}'}
    _use_redis(monkeypatch, fake)
    with caplog.at_level(logging.ERROR):
        assert await es._restore_unknown_sells_v2() is False
    assert es._pending_unknown_sells == {}
    assert es._unknown_sells_restore_state == "ok"
    assert sum("형식 이상" in r.getMessage() for r in caplog.records) == 2


# ── 1. 복원 실패 시 분할 익절 1주기 보류 ─────────────────────────────────────

@pytest.mark.asyncio
async def test_restore_failure_holds_partial_one_cycle_then_restores(monkeypatch):
    import app.services.swing.exit_service as es
    _use_redis(monkeypatch, _FakeRedis(fail_reads=es._UNKNOWN_SELL_RESTORE_HOLD_CYCLES))
    sim = _Sim(monkeypatch, swing=20, dt=0, price=11500, signal=_partial_signal)
    await sim.cycles(es._UNKNOWN_SELL_RESTORE_HOLD_CYCLES)
    assert sim.sent == []  # 분할 익절 보류
    await sim.cycles(1)    # 재시도 성공 → 정상 진행
    assert sim.sent == [10]
    assert es._unknown_sells_restore_state == "ok"


@pytest.mark.asyncio
async def test_restore_failure_does_not_hold_stop_loss(monkeypatch):
    """복원 실패 중에도 손절(전량)은 진행 — 청산 우선(§8.1-11)."""
    import app.services.swing.exit_service as es
    _use_redis(monkeypatch, _FakeRedis(fail_reads=10))
    sim = _Sim(monkeypatch, swing=10, dt=0, price=8000, avg=10000)
    await sim.cycles(1)
    assert sim.sent == [10]
    assert es._unknown_sells_restore_failures == 1


@pytest.mark.asyncio
async def test_restore_gives_up_after_hold_cycles(monkeypatch, caplog):
    import app.services.swing.exit_service as es
    _use_redis(monkeypatch, _FakeRedis(fail_reads=100))
    sim = _Sim(monkeypatch, swing=20, dt=0, price=11500, signal=_partial_signal)
    with caplog.at_level(logging.WARNING):
        await sim.cycles(es._UNKNOWN_SELL_RESTORE_HOLD_CYCLES + 1)
    assert sim.sent == [10]  # 보류는 HOLD_CYCLES 주기만
    assert es._unknown_sells_restore_state == "gave_up"
    assert any(r.levelno >= logging.ERROR and "복원 포기" in r.getMessage() for r in caplog.records)


@pytest.mark.asyncio
async def test_redis_unconnected_no_hold(monkeypatch):
    import app.services.swing.exit_service as es
    _use_redis(monkeypatch, None)
    sim = _Sim(monkeypatch, swing=20, dt=0, price=11500, signal=_partial_signal)
    await sim.cycles(1)
    assert sim.sent == [10]
    assert es._unknown_sells_restore_state == "ok"


# ── 2/3. 백그라운드 태스크 추적 ─────────────────────────────────────────────

@pytest.mark.asyncio
async def test_fill_check_task_is_tracked_and_drained(monkeypatch):
    import app.services.swing.exit_service as es
    import app.services.trade_executor as te
    gate = asyncio.Event()
    calls = []

    async def _verify(*a, **kw):
        calls.append((a, kw))
        await gate.wait()
    monkeypatch.setattr(te, "_verify_and_sync_execution_v3", _verify)
    monkeypatch.setattr(te, "_tracked_bg_tasks", set())

    es._schedule_swing_sell_fill_check_v2("0001", "005930", "T", 10, 11500.0, 10000.0, "KRX")
    tracked = [t for t in te._tracked_bg_tasks if not t.done()]
    assert len(tracked) == 1
    assert tracked[0].get_name() == "swing_sell_fill:005930"
    assert te.pending_tracked_tasks_count_v2() == 1

    await asyncio.sleep(0)
    gate.set()
    assert await te.drain_tracked_tasks_v2(1.0) == 0
    assert calls and calls[0][1]["sell_pnl_basis"]["strategy_type"] == "swing"
    assert te._tracked_bg_tasks == set()


@pytest.mark.asyncio
async def test_unknown_sell_portfolio_sync_task_is_tracked(monkeypatch):
    import app.services.swing.exit_service as es
    import app.services.trade_executor as te
    monkeypatch.setattr(te, "_tracked_bg_tasks", set())
    sync = AsyncMock()
    monkeypatch.setattr(te, "_delayed_sync_portfolio", sync)
    es._trigger_portfolio_sync_v2()
    assert len(te._tracked_bg_tasks) == 1
    assert next(iter(te._tracked_bg_tasks)).get_name() == "swing_unknown_sell_sync"
    await te.drain_tracked_tasks_v2(1.0)
    sync.assert_awaited_once()


def test_fill_check_without_loop_warns_not_raises(monkeypatch, caplog):
    """루프 밖 호출 — 예외 전파 없이 warning, 코루틴 미생성."""
    import app.services.swing.exit_service as es
    import app.services.trade_executor as te

    def _boom(*a, **kw):
        raise AssertionError("루프 없으면 코루틴을 만들면 안 된다")
    monkeypatch.setattr(te, "_verify_and_sync_execution_v3", _boom)
    with caplog.at_level(logging.WARNING):
        es._schedule_swing_sell_fill_check_v2("0001", "005930", "T", 10, 1.0, 1.0, "KRX")
    assert any("체결 확인 예약 실패" in r.getMessage() for r in caplog.records)


def test_no_bare_create_task_in_swing_exit_service():
    import inspect
    import app.services.swing.exit_service as es
    src = inspect.getsource(es)
    assert "create_task(" not in src
    _ = ExitSignal, MagicMock  # import 유지(타 테스트와 동일 헬퍼)