# --- Do not remove these libs ---
from freqtrade.strategy.interface import IStrategy
from pandas import DataFrame
import talib.abstract as ta


# --------------------------------


class ADX2(IStrategy):
    """

    author@: Gert Wohlgemuth

    converted from:

        https://github.com/sthewissen/Mynt/blob/master/src/Mynt.Core/Strategies/AdxMomentum.cs

    """

    # Minimal ROI designed for the strategy.
    # adjust based on market conditions. We would recommend to keep it low for quick turn arounds
    # This attribute will be overridden if the config file contains "minimal_roi"
    # ROI table:
    minimal_roi = {
        "0": 0.005,
        "60": 0.001
    }

    # Stoploss:
    stoploss = -0.38

    # Trailing stop:
    trailing_stop = True
    trailing_stop_positive = 0.234
    trailing_stop_positive_offset = 0.272
    trailing_only_offset_is_reached = True
    # Optimal timeframe for the strategy
    timeframe = '15m'

    # Number of candles the strategy requires before producing valid signals
    startup_candle_count: int = 20

    def populate_indicators(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        dataframe['adx'] = ta.ADX(dataframe, timeperiod=14)
        dataframe['plus_di'] = ta.PLUS_DI(dataframe, timeperiod=25)
        dataframe['minus_di'] = ta.MINUS_DI(dataframe, timeperiod=25)
        dataframe['sar'] = ta.SAR(dataframe)
        dataframe['mom'] = ta.MOM(dataframe, timeperiod=14)

        return dataframe

    def populate_buy_trend(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        dataframe.loc[
            (
                    (dataframe['adx'] < 25) &
                    (dataframe['mom'] < 0) &
                    (dataframe['plus_di'] < 25) &
                    (dataframe['plus_di'] < dataframe['minus_di'])

            ),
            'buy'] = 1
        return dataframe

    def populate_sell_trend(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        dataframe.loc[
            (
                    (dataframe['adx'] < 25) &
                    (dataframe['mom'] > 0) &
                    (dataframe['minus_di'] < 25) &
                    (dataframe['plus_di'] > dataframe['minus_di'])

            ),
            'sell'] = 1
        return dataframe