from datetime import datetime
from zoneinfo import ZoneInfo

from app.sim.liquidity import bid_mark_ok
from app.sim.pricing import option_fill, perp_fill
from app.strategy.clock import can_open_new, window_key
from app.strategy.exits import check_exits
from app.strategy.signal import decide

_SH = ZoneInfo("Asia/Shanghai")


def test_signal_buy_call_short_perp() -> None:
    s = decide(20.0, 15.0)
    assert s is not None
    assert s.option_side == "call"
    assert s.perp_side == "short"


def test_signal_buy_put_long_perp() -> None:
    s = decide(10.0, 16.0)
    assert s is not None
    assert s.option_side == "put"
    assert s.perp_side == "long"


def test_signal_equal() -> None:
    assert decide(10.0, 10.0) is None


def test_exit_fixed_and_premium_multiple() -> None:
    fixed = check_exits(
        net_pnl=15.0,
        exit_mode="fixed_usdt",
        net_profit_target=15,
        premium_exit_multiple=1,
        initial_premium=40,
    )
    assert fixed.reason == "fixed_usdt"
    assert fixed.target == 15

    assert (
        check_exits(
            net_pnl=14.9,
            exit_mode="fixed_usdt",
            net_profit_target=15,
            premium_exit_multiple=1,
            initial_premium=40,
        ).should_close
        is False
    )

    prem = check_exits(
        net_pnl=40.0,
        exit_mode="premium_multiple",
        net_profit_target=15,
        premium_exit_multiple=1,
        initial_premium=40,
    )
    assert prem.reason == "premium_multiple"
    assert prem.target == 40

    half = check_exits(
        net_pnl=20.0,
        exit_mode="premium_multiple",
        net_profit_target=15,
        premium_exit_multiple=0.5,
        initial_premium=40,
    )
    assert half.should_close is True
    assert half.target == 20


def test_perp_pricing() -> None:
    r = perp_fill(side="long", action="open", bid=100, ask=101, qty_eth=1, fee_rate=0.001)
    assert abs(r.fill_px - 101 * 1.001) < 1e-9


def test_option_open_close_pricing() -> None:
    o = option_fill(action="open", bid=10, ask=12, qty_eth=2, fee_rate=0.001)
    assert o.fill_px > 12
    c = option_fill(action="close", bid=10, ask=12, qty_eth=2, fee_rate=0.001)
    assert c.fill_px < 10


def test_window_always_open() -> None:
    n = datetime(2026, 7, 24, 17, 0, tzinfo=_SH)
    assert can_open_new(n) is True
    assert window_key(n) == "20260724"
    n2 = datetime(2026, 7, 24, 10, 0, tzinfo=_SH)
    assert can_open_new(n2) is True
    assert window_key(n2) == "20260724"


def test_bid_mark_deviation_30pct() -> None:
    # |7-10|/10 = 30% → 允许（≤30%）
    ok, _ = bid_mark_ok(bid=7.0, mark=10.0, max_dev_pct=30)
    assert ok is True
    ok2, _ = bid_mark_ok(bid=6.9, mark=10.0, max_dev_pct=30)
    assert ok2 is False
    ok3, why = bid_mark_ok(bid=None, mark=10.0, max_dev_pct=30)
    assert ok3 is False
    assert "买一" in why