# source: https://raw.githubusercontent.com/cadilhe/freqtrade_2020_tcc/310d045ec6650d6989f38f2d7149489463babf34/user_data/strategies/berlinguyinca/ReinforcedSmoothScalp.py
# --- Do not remove these libs ---
from freqtrade.strategy.interface import IStrategy
from pandas import DataFrame, DatetimeIndex, merge
import numpy  # noqa
# --------------------------------
import talib.abstract as ta
import freqtrade.vendor.qtpylib.indicators as qtpylib


class github_cadilhe_freqtrade_2020_tcc__ReinforcedSmoothScalp__20210602_004229(IStrategy):
    """
        this strategy is based around the idea of generating a lot of potentatils buys and make tiny profits on each trade

        we recommend to have at least 60 parallel trades at any time to cover non avoidable losses
    """

    # Minimal ROI designed for the strategy.
    # This attribute will be overridden if the config file contains "minimal_roi"
    minimal_roi = {
        "0": 0.02
    }
    # Optimal stoploss designed for the strategy
    # This attribute will be overridden if the config file contains "stoploss"
    # should not be below 3% loss

    stoploss = -0.8
    # Optimal ticker interval for the strategy
    # the shorter the better
    timeframe = '1m'

    # resample factor to establish our general trend. Basically don't buy if a trend is not given
    resample_factor = 5

    def populate_indicators(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        dataframe = self.resample(dataframe, self.timeframe, self.resample_factor)

        dataframe['ema_high'] = ta.EMA(dataframe, timeperiod=5, price='high')
        dataframe['ema_close'] = ta.EMA(dataframe, timeperiod=5, price='close')
        dataframe['ema_low'] = ta.EMA(dataframe, timeperiod=5, price='low')
        stoch_fast = ta.STOCHF(dataframe, 5, 3, 0, 3, 0)
        dataframe['fastd'] = stoch_fast['fastd']
        dataframe['fastk'] = stoch_fast['fastk']
        dataframe['adx'] = ta.ADX(dataframe)
        dataframe['cci'] = ta.CCI(dataframe, timeperiod=20)
        dataframe['rsi'] = ta.RSI(dataframe, timeperiod=14)
        dataframe['mfi'] = ta.MFI(dataframe)

        # required for graphing
        bollinger = qtpylib.bollinger_bands(dataframe['close'], window=20, stds=2)
        dataframe['bb_lowerband'] = bollinger['lower']
        dataframe['bb_upperband'] = bollinger['upper']
        dataframe['bb_middleband'] = bollinger['mid']

        return dataframe

    def populate_buy_trend(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        dataframe.loc[
            (
                (
                        (dataframe['open'] < dataframe['ema_low']) &
                        (dataframe['adx'] > 30) &
                        (dataframe['mfi'] < 30) &
                        (
                                (dataframe['fastk'] < 30) &
                                (dataframe['fastd'] < 30) &
                                (qtpylib.crossed_above(dataframe['fastk'], dataframe['fastd']))
                        ) &
                        (dataframe['resample_sma'] < dataframe['close'])
                )
                # |
                # # try to get some sure things independent of resample
                # ((dataframe['rsi'] - dataframe['mfi']) < 10) &
                # (dataframe['mfi'] < 30) &
                # (dataframe['cci'] < -200)
            ),
            'buy'] = 1
        return dataframe

    def populate_sell_trend(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        dataframe.loc[
            (
                    (
                            (
                                (dataframe['open'] >= dataframe['ema_high'])

                            ) |
                            (
                                    (qtpylib.crossed_above(dataframe['fastk'], 70)) |
                                    (qtpylib.crossed_above(dataframe['fastd'], 70))

                            )
                    ) & (dataframe['cci'] > 100)
            )
            ,
            'sell'] = 1
        return dataframe

    def resample(self, dataframe, interval, factor):
        # defines the reinforcement logic
        # resampled dataframe to establish if we are in an uptrend, downtrend or sideways trend
        df = dataframe.copy()
        df = df.set_index(DatetimeIndex(df['date']))
        ohlc_dict = {
            'open': 'first',
            'high': 'max',
            'low': 'min',
            'close': 'last'
        }
        df = df.resample(str(int(interval[:-1]) * factor) + 'min',
                         label="right").agg(ohlc_dict).dropna(how='any')
        df['resample_sma'] = ta.SMA(df, timeperiod=50, price='close')
        df = df.drop(columns=['open', 'high', 'low', 'close'])
        df = df.resample(interval[:-1] + 'min')
        df = df.interpolate(method='time')
        df['date'] = df.index
        df.index = range(len(df))
        dataframe = merge(dataframe, df, on='date', how='left')
        return dataframe