import freqtrade.vendor.qtpylib.indicators as qtpylib
import numpy as np
import talib.abstract as ta
from freqtrade.strategy.interface import IStrategy
from freqtrade.strategy import DecimalParameter, IntParameter
from pandas import DataFrame
from freqtrade.strategy import merge_informative_pair
from freqtrade.persistence import Trade




















def SSLChannels(dataframe, length = 7):
    df = dataframe.copy()
    df['ATR'] = ta.ATR(df, timeperiod=14)
    df['smaHigh'] = df['high'].rolling(length).mean() + df['ATR']
    df['smaLow'] = df['low'].rolling(length).mean() - df['ATR']
    df['hlv'] = np.where(df['close'] > df['smaHigh'], 1, np.where(df['close'] < df['smaLow'], -1, np.NAN))
    df['hlv'] = df['hlv'].ffill()
    df['sslDown'] = np.where(df['hlv'] < 0, df['smaHigh'], df['smaLow'])
    df['sslUp'] = np.where(df['hlv'] < 0, df['smaLow'], df['smaHigh'])
    return df['sslDown'], df['sslUp']

class 08_NostalgiaForInfinityV2_OPT_02(IStrategy):
    INTERFACE_VERSION = 2

    minimal_roi = {
        "0": 10
    }

    stoploss = -1.0

    timeframe = '5m'
    inf_1h = '1h'

    custom_info = {}

    use_sell_signal = True
    sell_profit_only = False
    sell_profit_offset = 0.001 # it doesn't meant anything, just to guarantee there is a minimal profit.
    ignore_roi_if_buy_signal = True

    trailing_stop = False
    trailing_only_offset_is_reached = True
    trailing_stop_positive = 0.02
    trailing_stop_positive_offset = 0.04

    use_custom_stoploss = False

    process_only_new_candles = True

    startup_candle_count: int = 200

    order_types = {
        'buy': 'limit',
        'sell': 'limit',
        'stoploss': 'market',
        'stoploss_on_exchange': False
    }

    buy_bb40_bbdelta_close = DecimalParameter(0.005, 0.05, default=0.004, space='buy', optimize=True, load=True)
    buy_bb40_closedelta_close = DecimalParameter(0.01, 0.03, default=0.022, space='buy', optimize=True, load=True)
    buy_bb40_tail_bbdelta = DecimalParameter(0.15, 0.45, default=0.2, space='buy', optimize=True, load=True)
    buy_bb20_close_bblowerband = DecimalParameter(0.8, 1.1, default=0.989, space='buy', optimize=True, load=True)
    buy_bb20_volume = IntParameter(18, 34, default=20, space='buy', optimize=True, load=True)
    buy_rsi_diff = DecimalParameter(36.0, 54.0, default=49.173, space='buy', optimize=True, load=True)

    sell_rsi_bb = DecimalParameter(60.0, 80.0, default=60.981, space='sell', optimize=True, load=True)
    sell_rsi_main = DecimalParameter(72.0, 90.0, default=73.224, space='sell', optimize=True, load=True)
    sell_rsi_2 = DecimalParameter(72.0, 90.0, default=85.485, space='sell', optimize=True, load=True)
    sell_ema_relative = DecimalParameter(0.005, 0.1, default=0.03, space='sell', optimize=False, load=True)
    sell_rsi_diff = DecimalParameter(0.0, 5.0, default=0.703, space='sell', optimize=True, load=True)


    def informative_pairs(self):
        pairs = self.dp.current_whitelist()
        informative_pairs = [(pair, '1h') for pair in pairs]
        return informative_pairs

    def informative_1h_indicators(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        assert self.dp, "DataProvider is required for multiple timeframes."

        informative_1h = self.dp.get_pair_dataframe(pair=metadata['pair'], timeframe=self.inf_1h)

        informative_1h['ema_20'] = ta.EMA(informative_1h, timeperiod=20)
        informative_1h['ema_50'] = ta.EMA(informative_1h, timeperiod=50)
        informative_1h['ema_200'] = ta.EMA(informative_1h, timeperiod=200)

        informative_1h['rsi'] = ta.RSI(informative_1h, timeperiod=14)

        ssl_down_1h, ssl_up_1h = SSLChannels(informative_1h, 20)
        informative_1h['ssl_down'] = ssl_down_1h
        informative_1h['ssl_up'] = ssl_up_1h

        return informative_1h

    def normal_tf_indicators(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        bb_40 = qtpylib.bollinger_bands(dataframe['close'], window=40, stds=2)
        dataframe['lower'] = bb_40['lower']
        dataframe['mid'] = bb_40['mid']
        dataframe['bbdelta'] = (bb_40['mid'] - dataframe['lower']).abs()
        dataframe['closedelta'] = (dataframe['close'] - dataframe['close'].shift()).abs()
        dataframe['tail'] = (dataframe['close'] - dataframe['low']).abs()

        bollinger = qtpylib.bollinger_bands(qtpylib.typical_price(dataframe), window=20, stds=2)
        dataframe['bb_lowerband'] = bollinger['lower']
        dataframe['bb_middleband'] = bollinger['mid']
        dataframe['bb_upperband'] = bollinger['upper']
        dataframe['ema_slow'] = ta.EMA(dataframe, timeperiod=50)
        dataframe['volume_mean_slow'] = dataframe['volume'].rolling(window=30).mean()

        dataframe['ema_50'] = ta.EMA(dataframe, timeperiod=50)
        dataframe['ema_200'] = ta.EMA(dataframe, timeperiod=200)

        dataframe['sma_5'] = ta.SMA(dataframe, timeperiod=5)
        dataframe['sma_9'] = ta.SMA(dataframe, timeperiod=9)

        dataframe['rsi'] = ta.RSI(dataframe, timeperiod=14)

        return dataframe

    def populate_indicators(self, dataframe: DataFrame, metadata: dict) -> DataFrame:

        informative_1h = self.informative_1h_indicators(dataframe, metadata)
        dataframe = merge_informative_pair(dataframe, informative_1h, self.timeframe, self.inf_1h, ffill=True)

        dataframe = self.normal_tf_indicators(dataframe, metadata)

        return dataframe

    def populate_buy_trend(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        dataframe.loc[
            (
                (dataframe['close'] < dataframe['sma_9']) &
                (dataframe['close'] > dataframe['ema_200_1h']) &
                (dataframe['ema_50'] > dataframe['ema_200']) &
                (dataframe['ema_50_1h'] > dataframe['ema_200_1h']) &

                dataframe['lower'].shift().gt(0) &
                dataframe['bbdelta'].gt(dataframe['close'] * self.buy_bb40_bbdelta_close.value) &
                dataframe['closedelta'].gt(dataframe['close'] * self.buy_bb40_closedelta_close.value) &
                dataframe['tail'].lt(dataframe['bbdelta'] * self.buy_bb40_tail_bbdelta.value) &
                dataframe['close'].lt(dataframe['lower'].shift()) &
                dataframe['close'].le(dataframe['close'].shift()) &
                (dataframe['volume'] > 0)
            )
            |
            (
                (dataframe['close'] < dataframe['sma_9']) &
                (dataframe['close'] > dataframe['ema_200']) &
                (dataframe['close'] > dataframe['ema_200_1h']) &

                (dataframe['close'] < dataframe['ema_slow']) &
                (dataframe['close'] < self.buy_bb20_close_bblowerband.value * dataframe['bb_lowerband']) &
                (dataframe['volume'] < (dataframe['volume_mean_slow'].shift(1) * self.buy_bb20_volume.value))
            )
            |
            (
                (dataframe['close'] < dataframe['sma_5']) &
                (dataframe['close'] > dataframe['ema_200']) &
                (dataframe['close'] > dataframe['ema_200_1h']) &
                (dataframe['ssl_up_1h'] > dataframe['ssl_down_1h']) &
                (dataframe['ema_50'] > dataframe['ema_200']) &
                (dataframe['ema_50_1h'] > dataframe['ema_200_1h']) &

                (dataframe['rsi'] < dataframe['rsi_1h'] - self.buy_rsi_diff.value) &
                (dataframe['volume'] > 0)
            )
            ,
            'buy'
        ] = 1
        return dataframe

    def populate_sell_trend(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        dataframe.loc[
            (
                (dataframe['rsi'] > self.sell_rsi_bb.value) &
                (dataframe['close'] > dataframe['bb_upperband']) &
                (dataframe['close'].shift(1) > dataframe['bb_upperband'].shift(1)) &
                (dataframe['close'].shift(2) > dataframe['bb_upperband'].shift(2)) &
                (dataframe['volume'] > 0)
            )
            |
            (
                (dataframe['rsi'] > self.sell_rsi_main.value) &
                (dataframe['volume'] > 0)
            )
            |
            (
                (dataframe['close'] < dataframe['ema_200']) &
                (dataframe['close'] > dataframe['ema_50']) &
                (dataframe['rsi'] > self.sell_rsi_2.value) &
                (dataframe['volume'] > 0)
            )
            |
            (
                (dataframe['close'] < dataframe['ema_200']) &
                (((dataframe['ema_200'] - dataframe['close']) / dataframe['close']) < self.sell_ema_relative.value) &

                (dataframe['rsi'] > dataframe['rsi_1h'] + self.sell_rsi_diff.value) &
                (dataframe['volume'] > 0)
            )
            ,
            'sell'
        ] = 1
        return dataframe