"""期权盈亏结算:模拟盘本地扣费;实盘以交易所历史为准并冻结折 U."""
from __future__ import annotations

import unittest

from lib.options.options_pnl_settle_lib import (
    fee_to_premium_ccy,
    settle_closed_pnl,
    settle_exchange_realized_pnl,
)
from lib.options.options_stats_lib import (
    apply_exchange_pnl_freeze,
    compute_options_stats_from_history,
    history_pnl_to_usdt,
)


class FeeConvertTests(unittest.TestCase):
    def test_fee_same_ccy(self):
        self.assertAlmostEqual(
            fee_to_premium_ccy(0.001, "ETH", premium_ccy="ETH", index_px=3000),
            0.001,
            places=8,
        )


class SettleClosedPnlTests(unittest.TestCase):
    def test_sim_net_times_close_index(self):
        s = settle_closed_pnl(
            premium_paid=0.01,
            premium_received=0.02,
            open_fee=0.0005,
            close_fee=0.0005,
            premium_ccy="ETH",
            index_px=3000,
        )
        self.assertAlmostEqual(float(s["realized_pnl"]), 0.009, places=8)
        self.assertAlmostEqual(float(s["realized_pnl_usdt"]), 27.0, places=4)

    def test_budget_ignored_for_usdt(self):
        # budget 不得抬高开仓成本
        s = settle_closed_pnl(
            premium_paid=0.01,
            premium_received=0.02,
            open_fee=0,
            close_fee=0,
            premium_ccy="ETH",
            index_px=3000,
            budget_usdt=26.0,
        )
        self.assertAlmostEqual(float(s["realized_pnl_usdt"]), 30.0, places=4)

    def test_usdc_freeze_is_net(self):
        s = settle_closed_pnl(
            premium_paid=10,
            premium_received=12,
            open_fee=0.1,
            close_fee=0.1,
            premium_ccy="USDC",
            index_px=None,
        )
        self.assertAlmostEqual(float(s["realized_pnl"]), 1.8, places=4)
        self.assertAlmostEqual(float(s["realized_pnl_usdt"]), 1.8, places=4)

    def test_exchange_realized_not_fee_again(self):
        s = settle_exchange_realized_pnl(
            realized_pnl=0.009,
            premium_ccy="ETH",
            index_px=3000,
            fee_hint=0.001,
        )
        self.assertAlmostEqual(float(s["realized_pnl"]), 0.009, places=8)
        self.assertAlmostEqual(float(s["realized_pnl_usdt"]), 27.0, places=4)


class ExchangeFreezeStatsTests(unittest.TestCase):
    def test_freeze_uses_exchange_coin_pnl(self):
        import sqlite3

        from lib.options.options_db import init_options_tables

        conn = sqlite3.connect(":memory:")
        conn.row_factory = sqlite3.Row
        init_options_tables(conn)

        class _Ex:
            def public_get_market_ticker(self, params):
                inst = (params or {}).get("instId") or ""
                if inst.startswith("BTC"):
                    return {"data": [{"last": "100000"}]}
                return {"data": [{"last": "2500"}]}

        history = [
            {
                "status": "closed",
                "source": "exchange",
                "history_key": "ex|BTC-USD-261009-84000-P|1",
                "inst_id": "BTC-USD-261009-84000-P",
                "underlying": "BTC",
                "premium_ccy": "BTC",
                "realized_pnl": 0.000138,
                "created_at": "2026-10-08 10:00:00",
                "closed_at": "2026-10-08 22:22:56",
            },
            {
                "status": "closed",
                "source": "exchange",
                "history_key": "ex|ETH-USD-261006-2700-P|2",
                "inst_id": "ETH-USD-261006-2700-P",
                "underlying": "ETH",
                "premium_ccy": "ETH",
                "realized_pnl": -0.00648,
                "created_at": "2026-10-05 10:00:00",
                "closed_at": "2026-10-06 16:00:27",
            },
        ]
        frozen = apply_exchange_pnl_freeze(conn, history, _Ex())
        converted = history_pnl_to_usdt(frozen, _Ex())
        # 0.000138*100000=13.8; -0.00648*2500=-16.2; net=-2.4
        self.assertAlmostEqual(float(converted[0]["realized_pnl"]), 13.8, places=4)
        self.assertAlmostEqual(float(converted[1]["realized_pnl"]), -16.2, places=4)
        stats = compute_options_stats_from_history(converted)
        self.assertAlmostEqual(float(stats["net_realized_pnl"]), -2.4, places=4)

        # 指数再变也不改冻结 U
        class _Ex2:
            def public_get_market_ticker(self, params):
                return {"data": [{"last": "999999"}]}

        frozen2 = apply_exchange_pnl_freeze(conn, history, _Ex2())
        converted2 = history_pnl_to_usdt(frozen2, _Ex2())
        self.assertAlmostEqual(float(converted2[0]["realized_pnl"]), 13.8, places=4)
        conn.close()

    def test_frozen_usdt_ignores_live_index(self):
        history = [
            {
                "status": "closed",
                "inst_id": "ETH-USD-260701-2500-C",
                "underlying": "ETH",
                "premium_ccy": "ETH",
                "realized_pnl": 0.01,
                "realized_pnl_usdt": 25.0,
                "close_index_px": 2500.0,
                "created_at": "2026-10-01 10:00:00",
                "closed_at": "2026-10-01 12:00:00",
            }
        ]

        class _Ex:
            def public_get_market_ticker(self, params):
                return {"data": [{"last": "99999"}]}

        converted = history_pnl_to_usdt(history, _Ex())
        self.assertAlmostEqual(float(converted[0]["realized_pnl"]), 25.0, places=4)


if __name__ == "__main__":
    unittest.main()