"""9회차 B 그룹(스윙 청산·MDD) 회귀 테스트 (2026-10-12).

B-1 잔고 연속조회(get_balance_all_v2)로 2페이지 종목 손절 / _partial 보류 / 완전 응답 미발견 = 미보유 / 예외 보류,
    MDD 축소의 불완전 판정.
B-2 결과 불명 매도 대기 중 분할 익절 재발화 금지 · 손절 허용 · 정상 매도 잔고 감소의 불명 체결 오귀속 방지 ·
    불명 등록 시 쿨다운 기록.
B-3 불명 대기 TTL(장 마감) · 재매수 시 폐기.
B-3b TTL 폐기 전 KIS 잔고 대조 1회.

시뮬레이터는 5·6회차 테스트의 상태형 KIS 시뮬레이터(_Sim)를 재사용한다(주문 종단 safe_place_order 목,
체결 확인 종단 기록형 목, 예외 발생형 차단은 conftest). 기대값은 settings.* 참조.
"""
import logging
import time
from datetime import datetime
from unittest.mock import AsyncMock, MagicMock

import pytest

from app.core.config import settings
from app.core.timeutil import KST
from app.services.mean_reversion_strategy import ExitSignal

# 상태형 시뮬레이터와 autouse 리셋 픽스처(_reset)를 그대로 가져온다 — 이름으로 import 해야 픽스처가 등록된다.
from test_swing_r5_pending_sell_20261002 import _Sim, _reset, UNKNOWN, _partial_signal  # noqa: F401

CODE = "005930"


@pytest.fixture(autouse=True)
def _no_redis_and_alerts(monkeypatch):
    """불명 대기 Redis 미러링·텔레그램 경보는 기록형 목(단독 실행 시 실 Redis 접속 방지)."""
    import app.services.swing.exit_service as es
    monkeypatch.setattr(es, "_persist_unknown_sell_v2", AsyncMock(return_value=True))
    monkeypatch.setattr(es, "_forget_unknown_sell_v2", AsyncMock())
    monkeypatch.setattr(es, "_restore_unknown_sells_v2", AsyncMock(return_value=False))
    alerts = []
    monkeypatch.setattr(es, "_notify_swing_exit_alert_v2", lambda k, c, m: alerts.append((k, m)))
    import app.services.trade_executor as te
    monkeypatch.setattr(te, "_recent_cycle_buys_v2", lambda: {})
    return alerts


def _filler(n):
    return [{"pdno": f"9{i:05d}", "hldg_qty": "1", "ord_psbl_qty": "1"} for i in range(n)]


def _stop_signal(_remaining):
    return ExitSignal("SELL_ALL", "손절", 1.0)


# ── B-1 ────────────────────────────────────────────────────────────────────
@pytest.mark.asyncio
async def test_b1_second_page_stock_stop_loss_executes(monkeypatch):
    """보유가 페이지 한도를 넘어 종목이 2페이지에 있어도(완전 응답) 손절 주문이 나간다."""
    sim = _Sim(monkeypatch, swing=10, dt=0, signal=_stop_signal)
    rows = int(settings.SWING_BALANCE_FULL_PAGE_ROWS)

    async def _all():
        return {"rt_cd": "0", "_pages": 2,
                "output1": _filler(rows) + [{"pdno": CODE, "hldg_qty": str(sim.kis["hldg"]),
                                             "ord_psbl_qty": str(sim.kis["psbl"])}]}
    sim.api.get_balance_all_v2 = AsyncMock(side_effect=_all)
    await sim.cycles(1)
    assert sim.sent == [10]
    sim.api.get_balance.assert_not_awaited()  # 첫 페이지 전용 조회는 더 이상 쓰지 않는다


@pytest.mark.asyncio
async def test_b1_partial_response_missing_stock_holds(monkeypatch):
    import app.services.swing.exit_service as es
    monkeypatch.setattr(es.korea_investment_api, "get_balance_all_v2",
                        AsyncMock(return_value={"rt_cd": "0", "_pages": 2, "_partial": True,
                                                "output1": _filler(3)}))
    assert await es._fetch_kis_holding_v3(CODE) is None


@pytest.mark.asyncio
async def test_b1_partial_response_found_stock_is_used(monkeypatch):
    import app.services.swing.exit_service as es
    monkeypatch.setattr(es.korea_investment_api, "get_balance_all_v2",
                        AsyncMock(return_value={"rt_cd": "0", "_pages": 2, "_partial": True,
                                                "output1": [{"pdno": CODE, "hldg_qty": "7", "ord_psbl_qty": "5"}]}))
    assert await es._fetch_kis_holding_v3(CODE) == (7, 5)


@pytest.mark.asyncio
async def test_b1_complete_response_missing_is_not_held_even_if_full_page(monkeypatch):
    import app.services.swing.exit_service as es
    rows = int(settings.SWING_BALANCE_FULL_PAGE_ROWS) + 5
    monkeypatch.setattr(es.korea_investment_api, "get_balance_all_v2",
                        AsyncMock(return_value={"rt_cd": "0", "_pages": 2, "output1": _filler(rows)}))
    assert await es._fetch_kis_holding_v3(CODE) == (0, 0)


@pytest.mark.asyncio
async def test_b1_legacy_shape_keeps_full_page_heuristic(monkeypatch):
    import app.services.swing.exit_service as es
    rows = int(settings.SWING_BALANCE_FULL_PAGE_ROWS)
    monkeypatch.setattr(es.korea_investment_api, "get_balance_all_v2",
                        AsyncMock(return_value={"rt_cd": "0", "output1": _filler(rows)}))
    assert await es._fetch_kis_holding_v3(CODE) is None


@pytest.mark.asyncio
async def test_b1_exception_holds_and_logs_error(monkeypatch, caplog):
    import app.services.swing.exit_service as es
    monkeypatch.setattr(es.korea_investment_api, "get_balance_all_v2",
                        AsyncMock(side_effect=RuntimeError("KIS down")))
    with caplog.at_level(logging.ERROR):
        assert await es._fetch_kis_holding_v3(CODE) is None
    assert any("매도 보류" in r.message for r in caplog.records if r.levelno >= logging.ERROR)


@pytest.mark.asyncio
async def test_b1_rt_cd_error_holds(monkeypatch):
    import app.services.swing.exit_service as es
    monkeypatch.setattr(es.korea_investment_api, "get_balance_all_v2",
                        AsyncMock(return_value={"rt_cd": "1", "msg1": "EGW00201"}))
    assert await es._fetch_kis_holding_v3(CODE) is None


def test_b1_mdd_incomplete_uses_partial_flag():
    from app.services.mdd_manager import _balance_incomplete_v2
    rows = int(settings.SWING_BALANCE_FULL_PAGE_ROWS)
    full = _filler(rows)
    assert _balance_incomplete_v2({"_pages": 2, "output1": full}, full) is False
    assert _balance_incomplete_v2({"_pages": 1, "_partial": True, "output1": full[:2]}, full[:2]) is True
    # _pages 없는 구 형태 = 기존 페이지 가득 휴리스틱
    assert _balance_incomplete_v2({"output1": full}, full) is True
    assert _balance_incomplete_v2({"output1": full[:1]}, full[:1]) is False


@pytest.mark.asyncio
async def test_b1_mdd_reduction_calls_paginated_balance(monkeypatch):
    """MDD 축소는 get_balance_all_v2 를 쓴다 — 첫 페이지 전용 get_balance 는 호출하지 않는다."""
    from app.services import mdd_manager as mm
    from app.services.korea_investment_api import korea_investment_api
    allv2 = AsyncMock(return_value={"rt_cd": "1", "msg1": "fail"})  # 실패 응답 → 축소 보류(주문 0)
    legacy = AsyncMock(side_effect=AssertionError("get_balance 호출 금지"))
    monkeypatch.setattr(korea_investment_api, "get_balance_all_v2", allv2)
    monkeypatch.setattr(korea_investment_api, "get_balance", legacy)
    out = await mm.mdd_manager._execute_reduction_impl("REDUCE_AND_PAUSE", 0.3, False, "pause", "k")
    assert out == []
    allv2.assert_awaited_once()
    legacy.assert_not_awaited()


# ── B-2 ────────────────────────────────────────────────────────────────────
def _open_unknown_sim(monkeypatch, signal, swing=20, responses=None):
    """첫 매도는 결과 불명 + 브로커 미체결 잔존(보유 불변·주문가능 감소), 이후 주문은 정상 체결."""
    sim = _Sim(monkeypatch, swing=swing, dt=0, price=11500, signal=signal,
               responses=responses or [UNKNOWN], fill=lambda q, n: 0 if n == 0 else q)
    orig = sim._order

    async def _order(**kw):
        n = len(sim.sent)
        r = await orig(**kw)
        if n == 0:
            sim.kis["psbl"] -= kw["quantity"]  # 미체결 불명 주문분이 주문가능에서 빠짐
        return r
    import app.services.trade_executor as te
    monkeypatch.setattr(te, "safe_place_order", _order)
    return sim


@pytest.mark.asyncio
async def test_b2_pending_partial_take_profit_not_refired(monkeypatch, caplog):
    sim = _open_unknown_sim(monkeypatch, _partial_signal)
    with caplog.at_level(logging.WARNING):
        await sim.cycles(3)
    assert len(sim.sent) == 1               # 같은 1차 익절 재발화 0건
    assert CODE in sim.es._pending_unknown_sells
    assert any("분할 익절" in r.message and "건너뜀" in r.message for r in caplog.records)


@pytest.mark.asyncio
async def test_b2_pending_stop_loss_still_executes_within_kis_cap(monkeypatch):
    state = {"stop": False}

    def _sig(remaining):
        return _stop_signal(remaining) if state["stop"] else _partial_signal(remaining)
    sim = _open_unknown_sim(monkeypatch, _sig)
    await sim.cycles(1)
    assert sim.sent == [0] and CODE in sim.es._pending_unknown_sells
    state["stop"] = True
    await sim.cycles(1)
    # 손절은 허용 — 상한 = min(주문가능 10, 보유 20) − DT 0 = 10 (불명 주문분 제외, 과다매도 없음)
    assert sim.sent == [0, 10]
    assert sim.kis["hldg"] == 10


@pytest.mark.asyncio
async def test_b2_normal_sell_during_pending_not_misattributed(monkeypatch):
    state = {"stop": False}

    def _sig(remaining):
        return _stop_signal(remaining) if state["stop"] else _partial_signal(remaining)
    sim = _open_unknown_sim(monkeypatch, _sig)
    await sim.cycles(1)
    pre = sim.es._pending_unknown_sells[CODE]["pre_hldg"]
    state["stop"] = True
    await sim.cycles(1)          # 손절 10주 정상 접수·체결 → 대기 기준 잔고 차감
    assert sim.es._pending_unknown_sells[CODE]["pre_hldg"] == pre - 10
    state["stop"] = False
    await sim.cycles(2)          # 대조: 보유 감소 10주는 정상 매도분 → 불명 체결로 기록 금지
    assert not any("결과 불명 → KIS 잔고로 체결 확인" in (h.get("exit_reason") or "") for h in sim.history)
    assert CODE in sim.es._pending_unknown_sells  # 불명 주문은 여전히 브로커에 미체결


@pytest.mark.asyncio
async def test_b2_unknown_registration_records_cooldown(monkeypatch):
    sim = _Sim(monkeypatch, swing=20, dt=0, price=11500, signal=_partial_signal,
               responses=[UNKNOWN], fill=lambda q, n: 0)
    sim.es._recent_exits.clear()
    before = time.time()
    await sim.es.check_and_execute_exit_v2(MagicMock())
    assert CODE in sim.es._pending_unknown_sells
    assert sim.es._recent_exits.get(CODE, 0) >= before


# ── B-3 ────────────────────────────────────────────────────────────────────
def _epoch_kst(h, m, day=None):
    d = day or datetime.now(KST).date()
    return KST.localize(datetime(d.year, d.month, d.day, h, m)).timestamp()


def test_b3_expired_after_market_close():
    import app.services.swing.exit_service as es
    d = datetime(2026, 10, 12).date()
    pend = {"since": _epoch_kst(10, 0, d)}
    assert es._unknown_sell_expired_v2(pend, datetime(2026, 10, 12, 15, 0)) is False
    assert es._unknown_sell_expired_v2(pend, datetime(2026, 10, 12, 15, 31)) is True
    assert es._unknown_sell_expired_v2(pend, datetime(2026, 10, 13, 9, 5)) is True
    # 장 마감 후 등록은 다음 날 마감까지 유지 / 등록 시각 불명은 만료 판정 안 함
    late = {"since": _epoch_kst(16, 0, d)}
    assert es._unknown_sell_expired_v2(late, datetime(2026, 10, 12, 18, 0)) is False
    assert es._unknown_sell_expired_v2({"since": None}, datetime(2026, 10, 13, 18, 0)) is False


@pytest.mark.asyncio
async def test_b3_expire_drops_with_alert(monkeypatch, _no_redis_and_alerts):
    """대조 불가(잔고 조회 실패) → 기존대로 폐기 + 경보."""
    import app.services.swing.exit_service as es
    monkeypatch.setattr(es, "_presell_kis_holding_v2", AsyncMock(return_value=None))
    d = datetime(2026, 10, 12).date()
    es._pending_unknown_sells[CODE] = {"qty": 5, "pre_hldg": 10, "since": _epoch_kst(10, 0, d)}
    dropped = await es._expire_unknown_sells_v2(datetime(2026, 10, 12, 15, 40))
    assert dropped == [CODE] and CODE not in es._pending_unknown_sells
    es._forget_unknown_sell_v2.assert_awaited_once_with(CODE)
    assert any("수동 확인" in m for _, m in _no_redis_and_alerts)


@pytest.mark.asyncio
async def test_b3_rebuy_after_registration_drops(monkeypatch, _no_redis_and_alerts):
    import app.services.swing.exit_service as es
    import app.services.trade_executor as te
    reg = time.monotonic()
    es._pending_unknown_sells[CODE] = {"qty": 5, "pre_hldg": 10, "since": time.time(), "since_mono": reg}
    es._pending_unknown_sells["000660"] = {"qty": 1, "pre_hldg": 2, "since": time.time(), "since_mono": reg}
    monkeypatch.setattr(te, "_recent_cycle_buys_v2",
                        lambda: {CODE: {"ts": reg + 5}, "000660": {"ts": reg - 5}})
    dropped = await es._expire_unknown_sells_v2()
    assert dropped == [CODE]
    assert "000660" in es._pending_unknown_sells  # 등록 이전 매수는 무관


@pytest.mark.asyncio
async def test_b3_restored_entry_without_mono_dropped_on_any_buy(monkeypatch):
    import app.services.swing.exit_service as es
    import app.services.trade_executor as te
    es._pending_unknown_sells[CODE] = {"qty": 5, "pre_hldg": 10, "since": time.time()}
    monkeypatch.setattr(te, "_recent_cycle_buys_v2", lambda: {CODE: {"ts": time.monotonic()}})
    assert await es._expire_unknown_sells_v2() == [CODE]


@pytest.mark.asyncio
async def test_b3b_expire_reconciles_first_fill_booked_no_drop(monkeypatch, _no_redis_and_alerts):
    """장 마감 경과 항목도 폐기 전 대조 1회 — 체결이 확인되면 그 결과로 종결(경보 없음)."""
    import app.services.swing.exit_service as es
    d = datetime(2026, 10, 12).date()
    es._pending_unknown_sells[CODE] = {"qty": 5, "pre_hldg": 10, "since": _epoch_kst(15, 10, d)}
    snap = AsyncMock(return_value=(5, 5))
    monkeypatch.setattr(es, "_presell_kis_holding_v2", snap)

    async def _rec(code, hldg, sellable):
        assert (code, hldg, sellable) == (CODE, 5, 5)
        es._pending_unknown_sells.pop(code, None)  # 체결 반영으로 대기 해제
        return True
    rec = AsyncMock(side_effect=_rec)
    monkeypatch.setattr(es, "_reconcile_unknown_sell_v2", rec)
    dropped = await es._expire_unknown_sells_v2(datetime(2026, 10, 13, 9, 5))
    assert dropped == []
    rec.assert_awaited_once()
    assert _no_redis_and_alerts == []
    es._forget_unknown_sell_v2.assert_not_awaited()


@pytest.mark.asyncio
async def test_b3b_expire_reconcile_keeps_pending_then_drops(monkeypatch, _no_redis_and_alerts):
    """대조했지만 판정 불가(대기 유지) → 폐기 + 경보."""
    import app.services.swing.exit_service as es
    d = datetime(2026, 10, 12).date()
    es._pending_unknown_sells[CODE] = {"qty": 5, "pre_hldg": 10, "since": _epoch_kst(15, 10, d)}
    monkeypatch.setattr(es, "_presell_kis_holding_v2", AsyncMock(return_value=(10, 5)))
    rec = AsyncMock(return_value=False)
    monkeypatch.setattr(es, "_reconcile_unknown_sell_v2", rec)
    dropped = await es._expire_unknown_sells_v2(datetime(2026, 10, 13, 9, 5))
    assert dropped == [CODE]
    rec.assert_awaited_once()
    assert any("수동 확인" in m for _, m in _no_redis_and_alerts)


@pytest.mark.asyncio
async def test_b3b_expire_reconcile_exception_drops(monkeypatch, _no_redis_and_alerts):
    import app.services.swing.exit_service as es
    d = datetime(2026, 10, 12).date()
    es._pending_unknown_sells[CODE] = {"qty": 5, "pre_hldg": 10, "since": _epoch_kst(15, 10, d)}
    monkeypatch.setattr(es, "_presell_kis_holding_v2", AsyncMock(side_effect=RuntimeError("boom")))
    assert await es._expire_unknown_sells_v2(datetime(2026, 10, 13, 9, 5)) == [CODE]