"""ledger pending 단위 테스트."""

from __future__ import annotations

from bithumb.operations.runner import (
    _advance_cursor_from_ledger,
    _apply_backlog_limit,
    _is_settled,
    _is_signal_api_executable,
    _ledger_pending_signals,
    _merge_pending_signals,
    _settle_expired_backlog,
)
from datetime import datetime


def test_is_settled_executed_or_expected_skip() -> None:
    """executed 또는 expected_skip이면 settled."""
    assert _is_settled({"executed": True, "expected_skip": False})
    assert _is_settled({"executed": False, "expected_skip": True})
    assert not _is_settled({"executed": False, "expected_skip": False})


def test_ledger_pending_skips_settled_and_includes_missing() -> None:
    """history settled 신호는 제외, 미기록 신호는 pending."""
    kept = [
        {"datetime": "2026-06-14 14:09:00", "side": "buy", "bar_index": 10},
        {"datetime": "2026-06-14 14:15:00", "side": "sell", "bar_index": 11},
        {"datetime": "2026-06-14 14:51:00", "side": "sell", "bar_index": 12},
    ]
    history = [
        {
            "datetime": "2026-06-14 14:09:00",
            "side": "buy",
            "trade": {"executed": True, "expected_skip": False},
        },
        {
            "datetime": "2026-06-14 14:51:00",
            "side": "sell",
            "trade": {"executed": False, "expected_skip": True},
        },
    ]
    pending = _ledger_pending_signals(
        kept,
        history,
        latest_bar_index=12,
        lookback_days=3,
    )
    assert len(pending) == 1
    assert pending[0]["datetime"] == "2026-06-14 14:15:00"


def test_ledger_pending_includes_failed_api() -> None:
    """API 실패(expected_skip false)는 재시도 대상."""
    kept = [
        {"datetime": "2026-06-14 15:00:00", "side": "buy", "bar_index": 20},
    ]
    history = [
        {
            "datetime": "2026-06-14 15:00:00",
            "side": "buy",
            "trade": {"executed": False, "expected_skip": False},
        },
    ]
    pending = _ledger_pending_signals(
        kept,
        history,
        latest_bar_index=20,
        lookback_days=3,
    )
    assert len(pending) == 1


def test_apply_backlog_limit() -> None:
    """tick당 backlog 상한."""
    signals = [
        {"datetime": f"2026-06-14 10:{i:02d}:00", "side": "buy", "bar_index": i}
        for i in range(5)
    ]
    limited, dropped = _apply_backlog_limit(signals, 2)
    assert len(limited) == 2
    assert dropped == 3


def test_advance_cursor_from_ledger() -> None:
    """settled 신호까지만 커서 전진."""
    kept = [
        {"datetime": "2026-06-14 14:09:00", "side": "buy", "bar_index": 10},
        {"datetime": "2026-06-14 14:15:00", "side": "sell", "bar_index": 11},
    ]
    history = [
        {
            "datetime": "2026-06-14 14:09:00",
            "side": "buy",
            "trade": {"executed": True},
        },
    ]
    state: dict = {
        "last_processed_datetime": "2026-06-14 13:00:00",
        "last_processed_bar_index": 5,
    }
    _advance_cursor_from_ledger(state, kept, history)
    assert state["last_processed_datetime"] == "2026-06-14 14:09:00"
    assert state["last_processed_bar_index"] == 10


def test_settle_expired_backlog() -> None:
    """만료 backlog는 API 없이 expected_skip 정산."""
    from datetime import timedelta

    now = datetime.now()
    old_dt = (now - timedelta(hours=2)).strftime("%Y-%m-%d %H:%M:%S")
    kept = [{"datetime": old_dt, "side": "buy", "bar_index": 1, "price": 1.0}]
    settled = _settle_expired_backlog(
        kept,
        [],
        max_age_minutes=45,
        live_since=None,
    )
    assert len(settled) == 1
    assert settled[0]["trade"]["expected_skip"] is True
    assert "backlog 만료" in settled[0]["trade"]["skip_reason"]


def test_is_signal_api_executable_recent() -> None:
    """최근 신호는 API 체결 가능."""
    from datetime import timedelta

    recent = (datetime.now() - timedelta(minutes=10)).strftime("%Y-%m-%d %H:%M:%S")
    ok, _ = _is_signal_api_executable(
        {"datetime": recent, "side": "buy"},
        max_age_minutes=45,
        live_since=None,
    )
    assert ok


def test_merge_pending_dedupes() -> None:
    """ledger·catchup 병합 시 datetime·side 중복 제거."""
    a = [{"datetime": "2026-06-14 14:09:00", "side": "buy", "bar_index": 1}]
    b = [{"datetime": "2026-06-14 14:09:00", "side": "buy", "bar_index": 1}]
    merged = _merge_pending_signals(a, b)
    assert len(merged) == 1