import os
import sys

import pandas as pd

PROJECT_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))
if PROJECT_DIR not in sys.path:
    sys.path.insert(0, PROJECT_DIR)

from app.services import price_tracker


def test_trailing_stop_activation_uses_profit_floor_when_atr_is_too_wide(monkeypatch):
    """MLN-style case: +5% float profit with huge ATR must still protect above entry."""
    monkeypatch.setattr(price_tracker, "calc_atr", lambda df, period=14: 0.447143)
    monkeypatch.setattr(price_tracker, "detect_trend_exhaustion", lambda df, atr: {"exhausted": False, "signals": [], "severity": "low"})
    monkeypatch.setattr(price_tracker, "full_pa_analysis", lambda df, timeframe: {"candles_class": []})
    monkeypatch.setattr(price_tracker, "load_rules", lambda: {
        "tracker": {
            "trailing_stop": {
                "enabled": True,
                "activate_pnl_pct": 3,
                "min_lock_profit_pct": 0.5,
                "breakeven_buffer_pct": 0.5,
                "tiers": [
                    {"min_pnl_pct": 0, "atr_mult": 3.0, "label": "防震"},
                    {"min_pnl_pct": 5, "atr_mult": 2.0, "label": "锁利"},
                ],
            }
        }
    })
    df = pd.DataFrame(
        [
            {"open": 3.5, "high": 3.8, "low": 3.4, "close": 3.7, "volume": 100},
            {"open": 3.7, "high": 3.9, "low": 3.6, "close": 3.8, "volume": 120},
        ]
        * 20
    )
    monkeypatch.setattr(price_tracker, "fetch_klines", lambda symbol, timeframe, limit=100: df)

    rec = {
        "entry_price": 3.61,
        "stop_loss": 3.249,
        "tp1": 4.822857,
        "tp2": 5.631429,
        "entry_plan": {"trailing_stop_level": 0.0},
    }

    result = price_tracker.analyze_tracking_signals("MLN/USDT", rec, 3.8)

    assert result["trailing_stop_activated"] is True
    assert result["trailing_stop_level"] == max(3.249, 3.61 * 1.005)
    assert result["trailing_stop_level"] > rec["entry_price"]
    assert any("跟踪止盈激活" in signal for signal in result["sell_signals"])