"""KIS adapter tests (REQ-012).

Unit tests run always; the sandbox integration test runs only when KIS
모의투자 credentials are present (TREX_KIS_BROKER_* env / .env).
"""
from __future__ import annotations

import os

import pytest

from trex_core.adapters.broker.kis import KISBroker
from trex_core.application.broker_port import BrokerBalanceError, OrderRequest

_MOCK_URL = "https://openapivts.koreainvestment.com:29443"


def test_account_split_and_mock_tr_ids():
    b = KISBroker("12345678-01", app_key="k", app_secret="s", base_url=_MOCK_URL)
    assert b._account() == ("12345678", "01")
    assert b._tr_submit("buy") == "VTTC0012U"
    assert b._tr_submit("sell") == "VTTC0011U"
    assert b.name() == "kis-mock"


def test_live_base_url_requires_allow_live():
    with pytest.raises(RuntimeError):
        KISBroker("12345678-01", app_key="k", app_secret="s",
                   base_url="https://openapi.koreainvestment.com:9443")
    # gated on explicitly
    b = KISBroker("12345678-01", app_key="k", app_secret="s",
                  base_url="https://openapi.koreainvestment.com:9443", allow_live=True)
    assert b.name() == "kis-live" and b._tr_submit("buy") == "TTTC0012U"


def _kis_env():
    keys = ("TREX_KIS_BROKER_BASE_URL", "TREX_KIS_BROKER_APP_KEY",
            "TREX_KIS_BROKER_APP_SECRET", "TREX_KIS_BROKER_ACCOUNT_REF")
    if not all(os.environ.get(k) for k in keys):
        # try .env via dotenv
        try:
            from dotenv import load_dotenv, find_dotenv
            load_dotenv(find_dotenv(usecwd=True), override=False)
        except ImportError:
            pass
    if not all(os.environ.get(k) for k in keys):
        pytest.skip("KIS 모의투자 credentials not set; skipping sandbox integration test")
    return {k: os.environ[k] for k in keys}


def test_sandbox_token_and_submit():
    """Single sandbox round-trip (one token issuance — KIS rate-limits token requests)."""
    import httpx

    env = _kis_env()
    assert "openapivts" in env["TREX_KIS_BROKER_BASE_URL"], "expect 모의투자 sandbox URL"
    b = KISBroker(
        env["TREX_KIS_BROKER_ACCOUNT_REF"],
        app_key=env["TREX_KIS_BROKER_APP_KEY"],
        app_secret=env["TREX_KIS_BROKER_APP_SECRET"],
        base_url=env["TREX_KIS_BROKER_BASE_URL"],
        timeout=float(os.environ.get("TREX_KIS_BROKER_TIMEOUT", "10")),
    )
    try:
        token = b._ensure_token()
    except httpx.HTTPStatusError as exc:  # KIS EGW00133: token issuance rate-limited
        pytest.skip(f"KIS token rate-limited/unavailable: {exc}")
    assert isinstance(token, str) and len(token) > 0

    # limit buy 1 share at a low price (sandbox, no real money). Reuses the cached token.
    ack = b.submit_order(OrderRequest(slot_id="t", side="buy", symbol="005930", qty=1,
                                      limit_price=10000, order_type="00"))
    assert ack.raw, "expected a KIS response payload"
    if ack.accepted:
        assert ack.broker_order_id
    else:
        assert ack.reason  # rejection carries a reason (e.g., 장 미개장/잔고부족)


def test_get_balance_rejects_failure_instead_of_false_empty(monkeypatch):
    """BAT-057: a rejected KIS response is not a successful empty balance."""
    b = KISBroker("12345678-01", app_key="k", app_secret="s", base_url=_MOCK_URL)
    monkeypatch.setattr(b, "_headers", lambda _tr: {})

    class Response:
        def raise_for_status(self): pass
        def json(self): return {"rt_cd": "1", "output1": []}

    monkeypatch.setattr("trex_core.adapters.broker.kis.httpx.get", lambda *a, **kw: Response())
    with pytest.raises(BrokerBalanceError, match="broker_rejected"):
        b.get_balance()


def test_get_balance_accepts_validated_empty_balance(monkeypatch):
    b = KISBroker("12345678-01", app_key="k", app_secret="s", base_url=_MOCK_URL)
    monkeypatch.setattr(b, "_headers", lambda _tr: {})

    class Response:
        def raise_for_status(self): pass
        def json(self): return {"rt_cd": "0", "output1": []}

    monkeypatch.setattr("trex_core.adapters.broker.kis.httpx.get", lambda *a, **kw: Response())
    assert b.get_balance() == []


def test_get_balance_sanitizes_token_issuance_failure(monkeypatch):
    b = KISBroker("12345678-01", app_key="k", app_secret="s", base_url=_MOCK_URL)
    monkeypatch.setattr(b, "_headers", lambda _tr: (_ for _ in ()).throw(KeyError("access_token-secret")))
    with pytest.raises(BrokerBalanceError) as raised:
        b.get_balance()
    assert raised.value.code == "token_issuance_failed"
    assert "secret" not in str(raised.value)


def test_get_available_cash_uses_cash_only_amount(monkeypatch):
    b = KISBroker("12345678-01", app_key="k", app_secret="s", base_url=_MOCK_URL)
    monkeypatch.setattr(b, "_headers", lambda _tr: {})
    monkeypatch.setattr(b, "get_current_price", lambda _symbol: None)

    class Response:
        def raise_for_status(self): pass
        def json(self):
            return {
                "rt_cd": "0",
                "output": {"nrcvb_buy_amt": "695591", "max_buy_amt": "999999"},
            }

    monkeypatch.setattr("trex_core.adapters.broker.kis.httpx.get", lambda *a, **kw: Response())
    assert b.get_available_cash() == 695_591