"""权益曲线采样:现金+现货币+权利金+浮盈."""
from __future__ import annotations

import sqlite3
import unittest


class EquitySampleTests(unittest.TestCase):
    def test_equity_fills_open_cliff(self):
        from lib.instance.instance_cash_sample_lib import equity_usdt_from_snapshot

        # 开仓后:USDT 所剩无几,BTC 缓冲 + 权利金仓位
        bal = {
            "trading_usdt": 50.0,
            "funding_usdt": 0.0,
            "trading_btc": 0.001,
            "funding_btc": 0.0,
        }
        positions = [
            {
                "premium_paid": 0.01,
                "premium_ccy": "BTC",
                "open_index_px": 84000.0,
                "idx_px": 84000.0,
                "net_pnl": 0.0,
                "mark": 0.01,
            }
        ]
        # cash 50 + spot 84 + premium 840 = 974; 浮盈约 0
        eq = equity_usdt_from_snapshot(bal, positions, btc_px=84000.0, eth_px=None)
        self.assertIsNotNone(eq)
        self.assertGreater(float(eq), 900.0)
        # 纯现金会只有 50
        from lib.instance.instance_cash_sample_lib import cash_usdt_from_balances

        self.assertAlmostEqual(float(cash_usdt_from_balances(bal)), 50.0, places=2)

    def test_query_prefers_equity_column(self):
        from lib.instance.instance_cash_sample_lib import (
            init_cash_sample_table,
            query_cash_series_with_db,
            record_cash_sample,
        )

        conn = sqlite3.connect(":memory:")
        conn.row_factory = sqlite3.Row
        init_cash_sample_table(conn)
        record_cash_sample(conn, 100.0, equity_usdt=500.0, ts_ms=1_700_000_000_000)
        record_cash_sample(conn, 120.0, equity_usdt=None, ts_ms=1_700_000_060_000)
        # 旧点无 equity 列时回退 cash:手动插一条仅 cash
        conn.execute(
            "INSERT INTO instance_cash_samples(ts_ms, cash_usdt) VALUES (?, ?)",
            (1_700_000_120_000, 130.0),
        )
        conn.commit()
        out = query_cash_series_with_db(conn, range_key="all")
        self.assertTrue(out["ok"])
        self.assertEqual(out["metric"], "equity")
        pts = out["points"]
        self.assertEqual(len(pts), 3)
        self.assertAlmostEqual(pts[0]["v"], 500.0, places=2)
        self.assertAlmostEqual(pts[1]["v"], 120.0, places=2)  # equity 默认写成 cash
        self.assertAlmostEqual(pts[2]["v"], 130.0, places=2)  # 历史无 equity → cash
        conn.close()

    def test_sample_once_dict_snapshot(self):
        import tempfile
        from pathlib import Path

        from lib.instance.instance_cash_sample_lib import (
            query_cash_series_with_db,
            sample_once,
        )

        tmp = Path(tempfile.mkdtemp()) / "eq.db"

        def get_db():
            c = sqlite3.connect(str(tmp))
            c.row_factory = sqlite3.Row
            return c

        ok = sample_once(
            get_db,
            lambda: {"cash_usdt": 200.0, "equity_usdt": 950.0},
        )
        self.assertTrue(ok)
        conn = get_db()
        try:
            out = query_cash_series_with_db(conn, range_key="all")
            self.assertAlmostEqual(float(out["latest"]), 950.0, places=2)
        finally:
            conn.close()


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