"""趋势回调预览：止盈盈利 U、止损金额 U、金额盈亏比。"""
from __future__ import annotations

import json
import sys
import unittest
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(ROOT))

from strategy_trend_lib import (  # noqa: E402
    build_trend_preview_level_rows,
    calc_money_reward_risk_ratio,
    calc_risk_budget_usdt,
    calc_tp_profit_usdt,
)


class TestTrendPreviewTp(unittest.TestCase):
    def test_risk_budget_from_snapshot(self):
        self.assertAlmostEqual(calc_risk_budget_usdt(110.73, 5), 5.5365, places=2)

    def test_short_profit_at_form_take_profit(self):
        profit = calc_tp_profit_usdt("short", 72.53, 66.0, 1114, 0.00167)
        self.assertIsNotNone(profit)
        self.assertGreater(profit, 0)
        rr = calc_money_reward_risk_ratio(profit, 5.5365)
        self.assertIsNotNone(rr)
        self.assertGreater(rr, 1.5)

    def test_preview_levels_use_money_rr(self):
        preview = {
            "direction": "short",
            "live_price_ref": 72.53,
            "stop_loss": 75.5,
            "take_profit": 66.0,
            "first_order_amount": 1114,
            "snapshot_available_usdt": 110.73,
            "risk_percent": 5,
            "contract_size": 0.00167,
            "grid_prices_json": json.dumps([73.42, 73.83]),
            "leg_amounts_json": json.dumps([222, 222]),
        }
        enriched, rows = build_trend_preview_level_rows(preview)
        self.assertAlmostEqual(enriched["preview_risk_amount_u"], 5.5365, places=2)
        self.assertEqual(enriched["preview_take_profit_price"], 66.0)
        self.assertEqual(len(rows), 3)
        self.assertEqual(rows[0]["label"], "首仓")
        self.assertEqual(rows[0]["risk_u"], enriched["preview_risk_amount_u"])
        self.assertIsNotNone(rows[0]["profit_u"])
        self.assertAlmostEqual(rows[0]["rr"], rows[0]["profit_u"] / 5.5365, places=2)
        self.assertEqual(rows[1]["risk_u"], enriched["preview_risk_amount_u"])
        self.assertGreater(rows[2]["profit_u"], rows[1]["profit_u"])


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