# source: https://raw.githubusercontent.com/graceful-coder/TradingStrategies/46e224f7238e20901e3aa17ca5d586bd6bfdfb38/emaCrossStrategy.py
# pragma pylint: disable=missing-docstring, invalid-name, pointless-string-statement
# flake8: noqa: F401
# isort: skip_file
# --- Do not remove these libs ---
import numpy as np  # noqa
import pandas as pd  # noqa
from pandas import DataFrame

from freqtrade.strategy import (BooleanParameter, CategoricalParameter, DecimalParameter,
                                IStrategy, IntParameter)

# --------------------------------
# Add your lib to import here
import talib.abstract as ta
import freqtrade.vendor.qtpylib.indicators as qtpylib


# This class is a sample. Feel free to customize it.
class Github_graceful_coder_TradingStrategies__emaCrossStrategy__20221107_190104(IStrategy):
    """
    This is a sample strategy to inspire you.
    More information in https://www.freqtrade.io/en/latest/strategy-customization/

    You can:
        :return: a Dataframe with all mandatory indicators for the strategies
    - Rename the class name (Do not forget to update class_name)
    - Add any methods you want to build your strategy
    - Add any lib you need to build your strategy

    You must keep:
    - the lib in the section "Do not remove these libs"
    - the methods: populate_indicators, populate_entry_trend, populate_exit_trend
    You should keep:
    - timeframe, minimal_roi, stoploss, trailing_*
    """
    # Strategy interface version - allow new iterations of the strategy interface.
    # Check the documentation or the Sample strategy to get the latest version.
    INTERFACE_VERSION = 3

    # Can this strategy go short?
    can_short: bool = False

    # Minimal ROI designed for the strategy.
    # This attribute will be overridden if the config file contains "minimal_roi".
    minimal_roi = {
      "0": 0.208,
      "90": 0.154,
      "251": 0.061,
      "606": 0
    }

    # Optimal stoploss designed for the strategy.
    # This attribute will be overridden if the config file contains "stoploss".
    stoploss = -0.037

    # Trailing stoploss
    trailing_stop = False
    trailing_stop_positive = None
    trailing_stop_positive_offset = 0.0 
    trailing_only_offset_is_reached = False

    # Optimal timeframe for the strategy.
    timeframe = '5m'

    # Run "populate_indicators()" only for new candle.
    process_only_new_candles = False

    # These values can be overridden in the config.
    use_exit_signal = True
    exit_profit_only = False
    ignore_roi_if_entry_signal = False

    # Hyperoptable parameters
    buy_rsi = IntParameter(low=1, high=50, default=30, space='buy', optimize=True, load=True)
    sell_rsi = IntParameter(low=50, high=100, default=70, space='sell', optimize=True, load=True)
    short_rsi = IntParameter(low=51, high=100, default=70, space='sell', optimize=True, load=True)
    exit_short_rsi = IntParameter(low=1, high=50, default=30, space='buy', optimize=True, load=True)

    # Number of candles the strategy requires before producing valid signals
    startup_candle_count: int = 30

    # Optional order type mapping.
    order_types = {
        'entry': 'limit',
        'exit': 'limit',
        'stoploss': 'market',
        'stoploss_on_exchange': False
    }

    # Optional order time in force.
    order_time_in_force = {
        'entry': 'gtc',
        'exit': 'gtc'
    }

    plot_config = {
        'main_plot': {
            'tema': {},
            'sar': {'color': 'white'},
        },
        'subplots': {
            "MACD": {
                'macd': {'color': 'blue'},
                'macdsignal': {'color': 'orange'},
            },
            "RSI": {
                'rsi': {'color': 'red'},
            }
        }
    }

    def informative_pairs(self):
        """
        Define additional, informative pair/interval combinations to be cached from the exchange.
        These pair/interval combinations are non-tradeable, unless they are part
        of the whitelist as well.
        For more information, please consult the documentation
        :return: List of tuples in the format (pair, interval)
            Sample: return [("ETH/USDT", "5m"),
                            ("BTC/USDT", "15m"),
                            ]
        """
        return []

    def populate_indicators(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        # RSI
        dataframe['rsi'] = ta.RSI(dataframe)

        # Bollinger Bands
        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']

        # # EMA - Exponential Moving Average

        dataframe['ema5'] = ta.EMA(dataframe, timeperiod=5)
        dataframe['ema21'] = ta.EMA(dataframe, timeperiod=21)

        return dataframe

    def populate_entry_trend(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        dataframe.loc[
            (
                ((dataframe['rsi'] > 29) & # When the RSI goes above 29, then there is less risk for the buy condition
                (dataframe['close'] < dataframe['bb_lowerband'])) | # When the close of the candle is less than that of the lower Bollinger Band, then this is seen as a bargain as the currency pair is oversold
                ((dataframe['ema5'] > dataframe['ema21']) &  # When the EMA5 crosses above the EMA21, this is called a "Golden Cross" and is a bullish indicator
                (dataframe['ema5'].shift(1) <= dataframe['ema21'])) # Because the EMA21 was previously greater than or equal to the EMA5 of the previous candle (previous candle is denoted by .shift(1))
            ),
        'buy'] = 1

        return dataframe

    def populate_exit_trend(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
 
        dataframe.loc[
            (
                ((dataframe['rsi'] > 71) & # When the RSI goes above 71, then the currency pair is overbought and it is a good time to sell
                (dataframe['close'] > dataframe['bb_middleband'])) | # When the close of the candle is greater than that of the middle Bollinger Band, then the price is up so sell
                ((dataframe['ema5'] < dataframe['ema21']) & # When the EMA21 crosses above the EMA5, this is called a "Death Cross" and is a bearish indicator
                (dataframe['ema5'].shift(1) > dataframe['ema21'])) # Since the EMA5 was previously greater than or equal to the EMA21 of the previous candle
            ),
        'sell'] = 1

        return dataframe