"""9회차 D 그룹(KIS 계층) 회귀 테스트.

D-1 get_balance_all_v2 잔고 연속조회 / D-2 청산 경로 조회의 서킷브레이커 게이트 면제 /
D-3 get_todays_orders_v2 실패=None.
목킹은 공통 종단(_make_request / http client)에 건다. 실 KIS 호출 0건.
"""
import asyncio

import pytest

from app.core.config import settings
from app.services import korea_investment_api as kia
from app.services.utils import CircuitBreakerState

BAL_EP = "/uapi/domestic-stock/v1/trading/inquire-balance"
PRICE_EP = "/uapi/domestic-stock/v1/quotations/inquire-price"
CCLD_EP = "/uapi/domestic-stock/v1/trading/inquire-daily-ccld"
DAILY_EP = "/uapi/domestic-stock/v1/quotations/inquire-daily-price"

# [R9 B 그룹 목킹 보정] conftest 가 get_balance_all_v2·get_todays_orders_v2 를 클래스 단위로 차단한다.
# 이 파일은 그 메서드 자체를 검증하므로 import 시점 원본을 테스트마다 되돌린다(test_infra_security_round2
# 와 같은 패턴). 내부 전송(_make_request)은 각 테스트가 목킹하고 토큰·소켓 차단은 그대로 유효하다.
_ORIG_GET_BALANCE_ALL_V2 = kia.KoreaInvestmentAPI.__dict__["get_balance_all_v2"]
_ORIG_GET_TODAYS_ORDERS_V2 = kia.KoreaInvestmentAPI.__dict__["get_todays_orders_v2"]


@pytest.fixture(autouse=True)
def _restore_methods_under_test(monkeypatch):
    monkeypatch.setattr(kia.KoreaInvestmentAPI, "get_balance_all_v2", _ORIG_GET_BALANCE_ALL_V2)
    monkeypatch.setattr(kia.KoreaInvestmentAPI, "get_todays_orders_v2", _ORIG_GET_TODAYS_ORDERS_V2)


def _bare_api():
    api = kia.KoreaInvestmentAPI.__new__(kia.KoreaInvestmentAPI)
    api.base_url = "https://openapivts.example"
    api.account_number = "1234567801"
    return api


def _row(code):
    return {"pdno": code, "hldg_qty": "1"}


def _page(codes, nk="", fk="", rt="0"):
    return {"rt_cd": rt, "msg_cd": "M", "msg1": "ok", "output1": [_row(c) for c in codes],
            "output2": [{"tot_evlu_amt": "1000"}], "ctx_area_fk100": fk, "ctx_area_nk100": nk}


class _Seq:
    """_make_request 대체 — 준비된 (result, headers) 또는 예외를 순서대로. 소진 시 예외."""

    def __init__(self, items):
        self.items = list(items)
        self.calls = []

    async def __call__(self, method, endpoint, tr_id, extra_headers=None, **kwargs):
        self.calls.append({"endpoint": endpoint, "extra_headers": extra_headers,
                           "params": kwargs.get("params")})
        if not self.items:
            raise AssertionError("unexpected extra _make_request call")
        it = self.items.pop(0)
        if isinstance(it, BaseException):
            raise it
        return it


# ── D-1 ──────────────────────────────────────────────────────────────────
@pytest.mark.asyncio
async def test_balance_single_page(monkeypatch):
    api = _bare_api()
    seq = _Seq([(_page(["A", "B"]), {"tr_cont": "D"})])
    monkeypatch.setattr(api, "_make_request", seq, raising=False)
    out = await api.get_balance_all_v2()
    assert [r["pdno"] for r in out["output1"]] == ["A", "B"]
    assert out["_pages"] == 1 and "_partial" not in out
    assert out["output2"] == [{"tot_evlu_amt": "1000"}]
    assert len(seq.calls) == 1 and seq.calls[0]["endpoint"] == BAL_EP


@pytest.mark.asyncio
async def test_balance_three_pages_merge_dedupe(monkeypatch):
    api = _bare_api()
    p1 = _page(["A", "B"], nk="N1", fk="F1")
    p2 = _page(["B", "C"], nk="N2", fk="F2")
    p2["output2"] = [{"tot_evlu_amt": "999"}]
    p3 = _page(["D"])
    seq = _Seq([(p1, {"tr_cont": "F"}), (p2, {"tr_cont": "M"}), (p3, {"tr_cont": "D"})])
    monkeypatch.setattr(api, "_make_request", seq, raising=False)
    out = await api.get_balance_all_v2()
    assert [r["pdno"] for r in out["output1"]] == ["A", "B", "C", "D"]
    assert out["_pages"] == 3 and "_partial" not in out
    assert out["output2"] == [{"tot_evlu_amt": "1000"}]   # 첫 페이지 것
    assert seq.calls[0]["extra_headers"] is None
    assert seq.calls[1]["extra_headers"] == {"tr_cont": "N"}
    assert seq.calls[1]["params"]["CTX_AREA_NK100"] == "N1"
    assert seq.calls[1]["params"]["CTX_AREA_FK100"] == "F1"
    assert seq.calls[2]["params"]["CTX_AREA_NK100"] == "N2"


@pytest.mark.asyncio
async def test_balance_second_page_exception_partial(monkeypatch):
    api = _bare_api()
    seq = _Seq([(_page(["A"], nk="N1"), {"tr_cont": "F"}), RuntimeError("boom")])
    monkeypatch.setattr(api, "_make_request", seq, raising=False)
    out = await api.get_balance_all_v2()
    assert out["_partial"] is True and out["_pages"] == 1
    assert [r["pdno"] for r in out["output1"]] == ["A"]


@pytest.mark.asyncio
async def test_balance_second_page_rt_cd_fail_partial(monkeypatch):
    api = _bare_api()
    seq = _Seq([(_page(["A"], nk="N1"), {"tr_cont": "F"}), (_page([], rt="1"), {})])
    monkeypatch.setattr(api, "_make_request", seq, raising=False)
    out = await api.get_balance_all_v2()
    assert out["_partial"] is True and out["_pages"] == 1


@pytest.mark.asyncio
async def test_balance_missing_ctx_is_partial(monkeypatch):
    api = _bare_api()
    seq = _Seq([(_page(["A"], nk=""), {"tr_cont": "M"})])
    monkeypatch.setattr(api, "_make_request", seq, raising=False)
    out = await api.get_balance_all_v2()
    assert out["_partial"] is True and len(seq.calls) == 1


@pytest.mark.asyncio
async def test_balance_max_pages_cap(monkeypatch):
    api = _bare_api()
    cap = settings.KIS_BALANCE_MAX_PAGES
    items = [(_page([f"S{i}"], nk=f"N{i}"), {"tr_cont": "M"}) for i in range(cap + 3)]
    seq = _Seq(items)
    monkeypatch.setattr(api, "_make_request", seq, raising=False)
    out = await api.get_balance_all_v2()
    assert len(seq.calls) == cap
    assert out["_pages"] == cap and out["_partial"] is True
    assert len(out["output1"]) == cap


@pytest.mark.asyncio
async def test_balance_first_page_failure_same_as_get_balance(monkeypatch):
    api = _bare_api()
    bad = _page([], rt="1")
    monkeypatch.setattr(api, "_make_request", _Seq([(bad, {"tr_cont": "F"})]), raising=False)
    out = await api.get_balance_all_v2()
    assert out is bad and "_pages" not in out

    monkeypatch.setattr(api, "_make_request", _Seq([RuntimeError("down")]), raising=False)
    with pytest.raises(RuntimeError):
        await api.get_balance_all_v2()


@pytest.mark.asyncio
async def test_balance_params_match_get_balance(monkeypatch):
    """첫 페이지 요청 파라미터가 기존 get_balance() 와 동일해야 한다(get_balance 는 conftest 가 차단 → 고정값 비교)."""
    api = _bare_api()
    seq = _Seq([(_page(["A"]), {})])
    monkeypatch.setattr(api, "_make_request", seq, raising=False)
    await api.get_balance_all_v2()
    assert seq.calls[0]["params"] == {
        "CANO": "12345678", "ACNT_PRDT_CD": "01", "AFHR_FLPR_YN": "N", "OFL_YN": "",
        "INQR_DVSN": "02", "UNPR_DVSN": "01", "FUND_STTL_ICLD_YN": "N",
        "FNCG_AMT_AUTO_RDPT_YN": "N", "PRCS_DVSN": "01", "CTX_AREA_FK100": "", "CTX_AREA_NK100": "",
    }


@pytest.mark.asyncio
async def test_balance_unmocked_hits_conftest_block(monkeypatch):
    """목킹 없이 호출하면 conftest 의 _get_access_token 차단(BaseException)이 그대로 올라와야 한다."""
    api, client = _net_api(monkeypatch, _Resp(200, {"rt_cd": "0"}), patch_token=False)
    api.account_number = "1234567801"
    with pytest.raises(BaseException) as ei:
        await api.get_balance_all_v2()
    assert type(ei.value).__name__ == "KISCallBlocked"
    assert client.calls == []


# ── D-2 ──────────────────────────────────────────────────────────────────
class _Resp:
    def __init__(self, status=200, body=None):
        self.status_code, self._b, self.headers, self.text = status, body or {}, {}, ""

    def json(self):
        return self._b


class _Client:
    def __init__(self, resp):
        self.resp, self.calls = resp, []

    async def request(self, method, url, **k):
        self.calls.append(url)
        if isinstance(self.resp, BaseException):
            raise self.resp
        return self.resp


def _net_api(monkeypatch, resp, patch_token=True):
    api = kia.KoreaInvestmentAPI.__new__(kia.KoreaInvestmentAPI)
    api.circuit_breaker = kia.CircuitBreaker(failure_threshold=2, recovery_timeout=120)
    api.monitor = kia.APICallMonitor()
    api.semaphore = asyncio.Semaphore(2)
    api._throttle_lock = asyncio.Lock()
    api.last_request_time = None
    api.min_request_interval = 0
    api.max_retries = 0
    api.retry_delay = 0
    api.retry_backoff = 1
    api.timeout = 1
    api.app_key = api.app_secret = "x"
    api.base_url = "http://x"
    client = _Client(resp)

    async def _tok(*a, **k):
        return "tok"

    async def _cl():
        return client
    if patch_token:
        monkeypatch.setattr(api, "_get_access_token", _tok, raising=False)
    monkeypatch.setattr(api, "_get_http_client", _cl, raising=False)
    return api, client


def _open(api):
    for _ in range(api.circuit_breaker.failure_threshold):
        api.circuit_breaker.record_failure()
    assert api.circuit_breaker.state == CircuitBreakerState.OPEN


@pytest.mark.asyncio
@pytest.mark.parametrize("ep", [BAL_EP, PRICE_EP, CCLD_EP])
async def test_exempt_reads_pass_gate_when_open(monkeypatch, ep):
    api, client = _net_api(monkeypatch, _Resp(200, {"rt_cd": "0"}))
    _open(api)
    out, _ = await api._make_request("GET", ep, "X")
    assert out["rt_cd"] == "0" and len(client.calls) == 1


@pytest.mark.asyncio
async def test_non_exempt_read_still_blocked(monkeypatch):
    api, client = _net_api(monkeypatch, _Resp(200, {"rt_cd": "0"}))
    _open(api)
    with pytest.raises(Exception, match="Circuit breaker open"):
        await api._make_request("GET", DAILY_EP, "X")
    assert client.calls == []


@pytest.mark.asyncio
async def test_exempt_success_while_open_keeps_breaker_open(monkeypatch):
    """[D-2b] OPEN 중 면제 성공은 record_success 하지 않는다 → 여전히 OPEN."""
    api, client = _net_api(monkeypatch, _Resp(200, {"rt_cd": "0"}))
    _open(api)
    cnt = api.circuit_breaker.failure_count
    out, _ = await api._make_request("GET", PRICE_EP, "X")
    assert out["rt_cd"] == "0" and len(client.calls) == 1
    assert api.circuit_breaker.state == CircuitBreakerState.OPEN
    assert api.circuit_breaker.failure_count == cnt


@pytest.mark.asyncio
async def test_exempt_failure_while_open_not_recorded(monkeypatch):
    """[D-2b] OPEN 중 면제 실패는 last_failure_time·failure_count 를 건드리지 않는다."""
    api, _ = _net_api(monkeypatch, RuntimeError("conn reset"))
    _open(api)
    api.circuit_breaker.last_failure_time -= 50   # 경과 시간 표시
    lft, cnt = api.circuit_breaker.last_failure_time, api.circuit_breaker.failure_count
    with pytest.raises(RuntimeError):
        await api._make_request("GET", BAL_EP, "X")
    assert api.circuit_breaker.last_failure_time == lft
    assert api.circuit_breaker.failure_count == cnt
    assert api.circuit_breaker.state == CircuitBreakerState.OPEN


@pytest.mark.asyncio
async def test_exempt_does_not_consume_half_open_probe(monkeypatch):
    """[D-2b] 복구 대기 경과 후에도 면제 호출은 HALF_OPEN 전이를 일으키지 않고 집계도 없다."""
    api, _ = _net_api(monkeypatch, _Resp(200, {"rt_cd": "0"}))
    _open(api)
    api.circuit_breaker.last_failure_time -= api.circuit_breaker.recovery_timeout + 1
    await api._make_request("GET", CCLD_EP, "X")
    assert api.circuit_breaker.state == CircuitBreakerState.OPEN


@pytest.mark.asyncio
async def test_exempt_failure_while_closed_is_counted(monkeypatch):
    """[D-2b] CLOSED 중 면제 실패는 기존대로 집계(장애 감지 유지)."""
    api, _ = _net_api(monkeypatch, RuntimeError("conn reset"))
    assert api.circuit_breaker.state == CircuitBreakerState.CLOSED
    with pytest.raises(RuntimeError):
        await api._make_request("GET", BAL_EP, "X")
    assert api.circuit_breaker.failure_count == 1
    with pytest.raises(RuntimeError):
        await api._make_request("GET", PRICE_EP, "X")
    assert api.circuit_breaker.state == CircuitBreakerState.OPEN   # threshold=2


@pytest.mark.asyncio
async def test_non_exempt_half_open_probe_success_closes(monkeypatch):
    """[D-2b] OPEN 해제는 비면제 조회의 HALF_OPEN 프로브 성공으로만."""
    api, client = _net_api(monkeypatch, _Resp(200, {"rt_cd": "0"}))
    _open(api)
    api.circuit_breaker.last_failure_time -= api.circuit_breaker.recovery_timeout + 1
    await api._make_request("GET", DAILY_EP, "X")
    assert len(client.calls) == 1
    assert api.circuit_breaker.state == CircuitBreakerState.CLOSED


@pytest.mark.asyncio
async def test_uncounted_flag_does_not_leak_to_next_call(monkeypatch):
    """면제 호출 후 컨텍스트 플래그가 초기화돼 이어지는 비면제 실패는 집계된다."""
    api, client = _net_api(monkeypatch, _Resp(200, {"rt_cd": "0"}))
    _open(api)
    await api._make_request("GET", PRICE_EP, "X")
    assert kia._BREAKER_UNCOUNTED.get() is False
    api.circuit_breaker.last_failure_time -= api.circuit_breaker.recovery_timeout + 1
    client.resp = RuntimeError("down")
    lft = api.circuit_breaker.last_failure_time
    with pytest.raises(RuntimeError):
        await api._make_request("GET", DAILY_EP, "X")   # HALF_OPEN 프로브 실패 → 집계
    assert api.circuit_breaker.last_failure_time > lft


def test_exempt_set_excludes_orders():
    assert set(kia.KoreaInvestmentAPI._CIRCUIT_EXEMPT_READ_ENDPOINTS).isdisjoint(
        kia.KoreaInvestmentAPI._NON_IDEMPOTENT_ENDPOINTS)
    assert kia.DAILY_CCLD_ENDPOINT in kia.KoreaInvestmentAPI._CIRCUIT_EXEMPT_READ_ENDPOINTS


# ── D-3 ──────────────────────────────────────────────────────────────────
def _ccld(monkeypatch, api, item):
    async def _f(*a, **k):
        if isinstance(item, BaseException):
            raise item
        return item, {}
    monkeypatch.setattr(api, "_daily_ccld_fetch_v2", _f, raising=False)


@pytest.mark.asyncio
async def test_orders_v2_success_list(monkeypatch):
    api = _bare_api()
    _ccld(monkeypatch, api, {"rt_cd": "0", "output1": [{"odno": "1"}]})
    assert await api.get_todays_orders_v2("005930") == [{"odno": "1"}]
    _ccld(monkeypatch, api, {"rt_cd": "0", "output1": []})
    assert await api.get_todays_orders_v2() == []
    _ccld(monkeypatch, api, {"rt_cd": "0", "output1": {"odno": "2"}})
    assert await api.get_todays_orders_v2() == [{"odno": "2"}]


@pytest.mark.asyncio
async def test_orders_v2_rt_cd_fail_none_legacy_empty(monkeypatch):
    api = _bare_api()
    _ccld(monkeypatch, api, {"rt_cd": "1", "msg_cd": "X"})
    assert await api.get_todays_orders_v2() is None
    assert await api._get_todays_orders_impl(strict=False) == []


@pytest.mark.asyncio
async def test_orders_v2_exception_none_legacy_empty(monkeypatch):
    api = _bare_api()
    _ccld(monkeypatch, api, RuntimeError("timeout"))
    assert await api.get_todays_orders_v2() is None
    assert await api._get_todays_orders_impl(strict=False) == []


@pytest.mark.asyncio
async def test_orders_v2_unparseable_none(monkeypatch):
    api = _bare_api()
    _ccld(monkeypatch, api, {"rt_cd": "0", "output1": "garbage"})
    assert await api.get_todays_orders_v2() is None
    assert await api._get_todays_orders_impl(strict=False) == ["garbage"]   # 기존 동작 불변
    _ccld(monkeypatch, api, ["not-a-dict"])
    assert await api.get_todays_orders_v2() is None


def test_legacy_get_todays_orders_delegates_non_strict():
    import inspect
    src = inspect.getsource(kia.KoreaInvestmentAPI._get_todays_orders_impl)
    assert "None if strict else []" in src