from core.models import Signal
from strategies.base import Strategy
from utils.indicators import rsi, atr, bollinger

class RsiMeanRev(Strategy):
    name = "rsi_meanrev"

    def on_bar(self, symbol, df):
        p = self.p
        r = rsi(df.close, p["rsi_period"])
        lo, _, hi = bollinger(df.close, p["bb_period"], p["bb_dev"])
        a = atr(df, 14).iloc[-1]
        c = df.close.iloc[-1]
        if r.iloc[-1] < p["low"] and c < lo.iloc[-1]:
            return Signal(symbol, "buy", p["sl_atr"] * a, p["tp_atr"] * a, self.name, "RSI+BB oversold")
        if r.iloc[-1] > p["high"] and c > hi.iloc[-1]:
            return Signal(symbol, "sell", p["sl_atr"] * a, p["tp_atr"] * a, self.name, "RSI+BB overbought")