edgeyopt/data/signal.py

'''
'''
import copy
import random

import numpy
import talib
from scipy.integrate.tests.test_odeint_jac import rhs

class Signal:
    
    def __init__(self):
        pass
    
    def calculate(self, series):
        pass

    def get_text(self):
        pass
    
    def mutate(self, factor):
        return copy.deepcopy(self)
    
class PriceComparisonSignalGenerator:
    
    def __init__(self):
        pass
    
    def generate(self):
        lhs = random.randint(PriceComparisonSignal.OPEN, PriceComparisonSignal.CLOSE)
        lhs_shift = random.randint(0, 10)
        rhs = random.randint(PriceComparisonSignal.OPEN, PriceComparisonSignal.CLOSE)
        rhs_shift = random.randint(0, 10)
        return PriceComparisonSignal(lhs, lhs_shift, rhs, rhs_shift)
    
    def id(self):
        return 'Price'
    
class PriceComparisonSignal(Signal):
    
    OPEN = 0
    HIGH = 1
    LOW = 2
    CLOSE = 3
    
    def __init__(self, lhs, lhs_shift, rhs, rhs_shift):
        self.lhs = lhs
        self.lhs_shift = lhs_shift
        self.rhs = rhs
        self.rhs_shift = rhs_shift
        
    def calculate(self, series):
        result = []
        for i in range(0, series.length()):
            result.append(self.calculate_at_index(series, i))
            
        return result
        
    def calculate_at_index(self, series, index):
        try:
            if self.lhs == PriceComparisonSignal.OPEN:
                lhs = series.get_open(index - self.lhs_shift)
            elif self.lhs == PriceComparisonSignal.HIGH:
                lhs = series.get_high(index - self.lhs_shift)
            elif self.lhs == PriceComparisonSignal.LOW:
                lhs = series.get_low(index - self.lhs_shift)
            elif self.lhs == PriceComparisonSignal.CLOSE:
                lhs = series.get_close(index - self.lhs_shift)
            else:
                raise Exception('Invalid lhs type: ' + str(self.lhs))
            
            if self.rhs == PriceComparisonSignal.OPEN:
                rhs = series.get_open(index - self.rhs_shift)
            elif self.rhs == PriceComparisonSignal.HIGH:
                rhs = series.get_high(index - self.rhs_shift)
            elif self.rhs == PriceComparisonSignal.LOW:
                rhs = series.get_low(index - self.rhs_shift)
            elif self.rhs == PriceComparisonSignal.CLOSE:
                rhs = series.get_close(index - self.rhs_shift)
            else:
                raise Exception('Invalid lhs type')
            
            return lhs < rhs
            
        except IndexError:
            return False
    
    def get_text(self):
        return self.component_to_str(self.lhs) + '[' + str(self.lhs_shift) + '] < ' + self.component_to_str(self.rhs) + '[' + str(self.rhs_shift) + ']'
    
    def component_to_str(self, component):
        if component == PriceComparisonSignal.OPEN:
            return "open"
        elif component == PriceComparisonSignal.HIGH:
            return "high"
        elif component == PriceComparisonSignal.LOW:
            return "low"
        elif component == PriceComparisonSignal.CLOSE:
            return "close"
        else:
            return "??"
        
    def mutate(self, factor):
        mutation_type = random.randint(0, 3)
        if mutation_type == 0:
            self.lhs = random.randint(PriceComparisonSignal.OPEN, PriceComparisonSignal.CLOSE)
        elif mutation_type == 1:
            self.rhs = random.randint(PriceComparisonSignal.OPEN, PriceComparisonSignal.CLOSE)
        elif mutation_type == 2:
            self.lhs_shift = max(0, self.lhs_shift + random.randint(-int(10 * factor + 1), int(10 * factor + 1)))
        elif mutation_type == 3:
            self.rhs_shift = max(0, self.rhs_shift + random.randint(-int(10 * factor + 1), int(10 * factor + 1)))
        
        
            
class RsiSignalGenerator:
    
    def __init__(self):
        pass
    
    def generate(self):
        shift = random.randint(0, 5)
        period = random.randint(2, 30)
        threshold = random.randrange(1, 9) * 10
        ineq_type = random.randint(RsiSignal.LT, RsiSignal.GT)
        return RsiSignal(period, threshold, ineq_type, shift)
    
    def id(self):
        return 'RSI'
        
class RsiSignal(Signal):
    
    LT = 0
    GT = 1
    
    def __init__(self, period, threshold, inequality_type, shift):
        self.period = period
        self.threshold = threshold
        self.inequality_type = inequality_type
        self.shift = shift
        if inequality_type == RsiSignal.LT:
            self.inequality_sign_str = '<'
        else:
            self.inequality_sign_str = '>'
        
    def calculate(self, series):
        closes = numpy.array([series.get_close(i) for i in range(0, series.length())])
        
        rsi = talib.RSI(closes, self.period)
        
        result = [self.calc_signal(v) for v in rsi]
        if self.shift == 0:
            return result
        else:
            return [False] * self.shift + result[:-self.shift]
    
    def calc_signal(self, value):
        if self.inequality_type == RsiSignal.LT:
            return value < self.threshold
        else:
            return value > self.threshold
        
    def get_text(self):
        return "rsi(c, {:d})[{:d}] {:s} {:d}".format(self.period, self.shift, self.inequality_sign_str, int(self.threshold))
    
    def mutate(self, factor):
        mutation_type = random.randint(0, 2)
        if mutation_type == 0:
            self.period = max(2, self.period + random.randint(-int(10 * factor + 1), int(10 * factor + 1)))
        elif mutation_type == 1:
            self.threshold = random.randrange(1, 9) * 10
        elif mutation_type == 2:
            random.randint(RsiSignal.LT, RsiSignal.GT)    
    
class AtrSignalGenerator:
    
    def __init__(self):
        pass
    
    def generate(self):
        period = random.randint(2, 30)
        threshold = random.randint(1, 30) * 0.001
        ineq_type = random.randint(AtrSignal.LT, AtrSignal.GT)
        return AtrSignal(period, threshold, ineq_type)
    
    def id(self):
        return 'ATR'

class AtrSignal(Signal):
    
    LT = 0
    GT = 1
    
    def __init__(self, period, threshold_factor, inequality_type):
        self.period = period
        self.threshold_factor = threshold_factor
        self.inequality_type = inequality_type
        if inequality_type == AtrSignal.LT:
            self.inequality_sign_str = '<'
        else:
            self.inequality_sign_str = '>'
        
    def calculate(self, series):
        closes = numpy.array([series.get_close(i) for i in range(0, series.length())])
        highs = numpy.array([series.get_high(i) for i in range(0, series.length())])
        lows = numpy.array([series.get_low(i) for i in range(0, series.length())])
        
        atr = talib.ATR(highs, lows, closes, self.period)
        
        result = [self.calc_signal(v, c) for (v, c) in zip(atr, closes)]
        return result
    
    def calc_signal(self, value, close):
        if self.inequality_type == AtrSignal.LT:
            return value < self.threshold_factor * close
        else:
            return value > self.threshold_factor * close
        
    def get_text(self):
        return "atr(" + str(self.period) + ') ' + self.inequality_sign_str + ' close[0] * ' + "{:.3f}".format(self.threshold_factor)
    
    def mutate(self, factor):
        mutation_type = random.randint(0, 2)
        if mutation_type == 0:
            self.period = max(2, self.period + random.randint(-int(10 * factor + 1), int(10 * factor + 1)))
        elif mutation_type == 1:
            self.threshold_factor = random.randint(1, 30) * 0.001
        elif mutation_type == 2:
            random.randint(AtrSignal.LT, AtrSignal.GT)
            
class AtrDeltaSignalGenerator:
    
    def __init__(self):
        pass
    
    def generate(self):
        period = random.randint(2, 30)
        threshold = random.randint(1, 15) * 0.2
        ineq_type = random.randint(AtrDeltaSignal.LT, AtrDeltaSignal.GT)
        sign = random.randint(AtrDeltaSignal.PLUS, AtrDeltaSignal.MINUS)
        return AtrDeltaSignal(period, threshold, ineq_type, sign)
    
    def id(self):
        return 'ATR Delta'
            
class AtrDeltaSignal(Signal):
    
    LT = 0
    GT = 1
    
    PLUS = 0
    MINUS = 1
    
    def __init__(self, period, threshold_factor, inequality_type, sign):
        self.period = period
        self.threshold_factor = threshold_factor
        self.inequality_type = inequality_type
        if inequality_type == AtrDeltaSignal.LT:
            self.inequality_sign_str = '<'
        else:
            self.inequality_sign_str = '>'
            
        self.sign = sign
        if self.sign == AtrDeltaSignal.PLUS:
            self.sign_str = '+'
        else:
            self.sign_str = '-'
        
    def calculate(self, series):
        closes = numpy.array([series.get_close(i) for i in range(0, series.length())])
        highs = numpy.array([series.get_high(i) for i in range(0, series.length())])
        lows = numpy.array([series.get_low(i) for i in range(0, series.length())])
        
        atr = talib.ATR(highs, lows, closes, self.period)
        
        result = [False]
        
        for i in range(1, len(closes)):
            result.append(self.calc_signal(atr[i], closes[i], closes[i - 1]))
        
        return result
    
    def calc_signal(self, value, c1, c2):
        if self.sign == AtrDeltaSignal.PLUS:
            if self.inequality_type == AtrDeltaSignal.LT:
                return c1 < c2 + value * self.threshold_factor
            else:
                return c1 > c2 + value * self.threshold_factor
        else:
            if self.inequality_type == AtrDeltaSignal.LT:
                return c1 < c2 - value * self.threshold_factor
            else:
                return c1 > c2 - value * self.threshold_factor
        
    def get_text(self):
        return 'close[0] {:s} close[1] {:s} atr({:d}) * {:f}'.format(self.inequality_sign_str, self.sign_str, self.period, self.threshold_factor)
    
    def mutate(self, factor):
        mutation_type = random.randint(0, 2)
        if mutation_type == 0:
            self.period = max(2, self.period + random.randint(-int(10 * factor + 1), int(10 * factor + 1)))
        elif mutation_type == 1:
            self.threshold_factor = random.randint(1, 30) * 0.001
        elif mutation_type == 2:
            random.randint(AtrDeltaSignal.LT, AtrDeltaSignal.GT)
    
            
class DayOfWeekSignalGenerator:
    
    def __init__(self):
        pass
    
    def generate(self):
        dow = random.randint(0, 6)
        return DayOfWeekSignal(dow)
    
    def id(self):
        return 'Day of week'
        

class DayOfWeekSignal(Signal):
    
    def __init__(self, day_of_week):
        self.day_of_week = day_of_week
        
    def calculate(self, series):
        result = []
        for i in range(0, series.length()):
            result.append(series.get_dt(i).date().weekday() == self.day_of_week)
            
        return result
    
    def get_text(self):
        return "day_of_week == " + self.dow_str(self.day_of_week)
    
    def dow_str(self, dow):
        return ['monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday', 'sunday'][dow]
    
    def mutate(self, factor):
        self.day_of_week = random.randint(0, 6)
    
    
class DayOfMonthSignalGenerator:
    
    def __init__(self):
        pass
    
    def generate(self):
        month_day = random.randint(1, 31)
        ineq_type = random.randint(DayOfMonthSignal.LT, DayOfMonthSignal.GT)
        return DayOfMonthSignal(month_day, ineq_type)

    def id(self):
        return 'Day of Month'

class DayOfMonthSignal(Signal):
    
    LT = 0
    GT = 1
    
    def __init__(self, day_of_month, inequality_type):
        self.day_of_month = day_of_month
        self.inequality_type = inequality_type
        if inequality_type == CrtdrSignal.LT:
            self.inequality_sign_str = '<'
        else:
            self.inequality_sign_str = '>'
        
    def calculate(self, series):
        result = []
        for i in range(0, series.length()):
            if self.inequality_type == DayOfMonthSignal.LT:
                result.append(series.get_dt(i).date().day < self.day_of_month)
            else:
                result.append(series.get_dt(i).date().day > self.day_of_month)
            
        return result
    
    def get_text(self):
        return "day_of_month {:s} {:d}".format(self.inequality_sign_str, self.day_of_month)
    
    def mutate(self, factor):
        self.day_of_month = random.randint(1, 31)
    
            
class CrtdrSignalGenerator:
    
    def __init__(self):
        pass
    
    def generate(self):
        shift = random.randint(0, 10)
        ineq_type = random.randint(CrtdrSignal.LT, CrtdrSignal.GT)
        threshold = 0.05 * random.randint(1, 19)
        return CrtdrSignal(shift, threshold, ineq_type)
    
    def id(self):
        return 'CRTDR'
    
class CrtdrSignal(Signal):
    
    LT = 0
    GT = 1
    
    def __init__(self, shift, threshold, inequality_type):
        self.shift = shift
        self.threshold = threshold
        self.inequality_type = inequality_type
        if inequality_type == CrtdrSignal.LT:
            self.inequality_sign_str = '<'
        else:
            self.inequality_sign_str = '>'
        
    def calculate(self, series):
        result = []
        for i in range(0, series.length()):
            try:
                h = series.get_high(i - self.shift)
                l = series.get_low(i - self.shift)
                c = series.get_close(i - self.shift)
                
                if h > l:
                    if self.inequality_type == CrtdrSignal.LT:
                        result.append((c - l) / (h - l) < self.threshold)
                    else:
                        result.append((c - l) / (h - l) > self.threshold)
                else:
                    result.append(False)
            except IndexError:
                result.append(False)
            
        return result
    
    def get_text(self):
        return 'crtdr[{:d}] {:s} {:.2f}'.format(self.shift, self.inequality_sign_str, self.threshold)
    
    def mutate(self, factor):
        mutation_type = random.randint(0, 2)
        if mutation_type == 0:
            self.shift = max(0, self.shift + random.randint(-int(10 * factor + 1), int(10 * factor + 1)))
        elif mutation_type == 1:
            self.threshold = 0.05 * random.randint(1, 19)
        elif mutation_type == 2:
            random.randint(CrtdrSignal.LT, CrtdrSignal.GT)

    
class SmaSignalGenerator:
    
    def __init__(self):
        pass
    
    def generate(self):
        lhs = random.randint(SmaSignal.OPEN, SmaSignal.CLOSE)
        period = random.randint(2, 30)
        rhs = random.randint(SmaSignal.OPEN, SmaSignal.CLOSE)
        ineq_sign = random.randint(SmaSignal.LT, SmaSignal.GT)
        return SmaSignal(period, lhs, rhs, ineq_sign)
    
    def id(self):
        return 'SMA'
            
class SmaSignal(Signal):
    
    OPEN = 0
    HIGH = 1
    LOW = 2
    CLOSE = 3
    
    LT = 0
    GT = 1
    
    def __init__(self, period, lhs, rhs, inequality_type):
        self.period = period
        self.lhs = lhs
        self.rhs = rhs
        self.inequality_type = inequality_type
        if inequality_type == SmaSignal.LT:
            self.inequality_sign_str = '<'
        else:
            self.inequality_sign_str = '>'
        
    def calculate(self, series):
        if self.lhs == SmaSignal.OPEN:
            lhs = numpy.array([series.get_open(i) for i in range(0, series.length())])
        elif self.lhs == SmaSignal.HIGH:
            lhs = numpy.array([series.get_high(i) for i in range(0, series.length())])
        elif self.lhs == SmaSignal.LOW:
            lhs = numpy.array([series.get_low(i) for i in range(0, series.length())])
        elif self.lhs == SmaSignal.CLOSE:
            lhs = numpy.array([series.get_close(i) for i in range(0, series.length())])
            
        if self.rhs == SmaSignal.OPEN:
            rhs = numpy.array([series.get_open(i) for i in range(0, series.length())])
        elif self.rhs == SmaSignal.HIGH:
            rhs = numpy.array([series.get_high(i) for i in range(0, series.length())])
        elif self.rhs == SmaSignal.LOW:
            rhs = numpy.array([series.get_low(i) for i in range(0, series.length())])
        elif self.rhs == SmaSignal.CLOSE:
            rhs = numpy.array([series.get_close(i) for i in range(0, series.length())])
            
        rhs_sma = talib.SMA(rhs, self.period)
        
        result = [self.calc_signal(l, r) for (l, r) in zip(lhs, rhs_sma)]
        return result
    
    def calc_signal(self, l, r):
        if self.inequality_type == SmaSignal.LT:
            return l < r
        else:
            return l > r
        
    def get_text(self):
        return '{:s}[0] {:s} sma({:s}, {:d})'.format(self.component_to_str(self.lhs), self.inequality_sign_str, self.component_to_str(self.rhs),  self.period) 
    
    def component_to_str(self, component):
        if component == SmaSignal.OPEN:
            return "open"
        elif component == SmaSignal.HIGH:
            return "high"
        elif component == SmaSignal.LOW:
            return "low"
        elif component == SmaSignal.CLOSE:
            return "close"
        else:
            return "??"
        
    
class CciSignalGenerator:
    
    def __init__(self):
        pass
    
    def generate(self):
        period = random.randint(2, 30)
        shift = random.randint(0, 5)
        threshold = random.randint(1, 30) * 10
        ineq_type = random.randint(CciSignal.LT, CciSignal.GT)
        return CciSignal(shift, period, threshold, ineq_type)
    
    def id(self):
        return 'CCI'

class CciSignal(Signal):
    
    LT = 0
    GT = 1
    
    def __init__(self, shift, period, threshold, inequality_type):
        self.shift = shift
        self.period = period
        self.threshold = threshold
        self.inequality_type = inequality_type
        if inequality_type == CciSignal.LT:
            self.inequality_sign_str = '<'
        else:
            self.inequality_sign_str = '>'
        
    def calculate(self, series):
        closes = numpy.array([series.get_close(i) for i in range(0, series.length())])
        highs = numpy.array([series.get_high(i) for i in range(0, series.length())])
        lows = numpy.array([series.get_low(i) for i in range(0, series.length())])
        
        cci = talib.CCI(highs, lows, closes, self.period)
        
        result = [self.calc_signal(v) for v in cci]
        
        if self.shift == 0:
            return result
        else:
            return [False] * self.shift + result[:-self.shift]
    
    def calc_signal(self, value):
        if self.inequality_type == CciSignal.LT:
            return value < self.threshold
        else:
            return value > self.threshold
        
    def get_text(self):
        return "cci({:d})[{:d}] {:s} {:f}".format(self.period, self.shift, self.inequality_sign_str, self.threshold)
    
    def mutate(self, factor):
        mutation_type = random.randint(0, 2)
        if mutation_type == 0:
            self.period = max(2, self.period + random.randint(-int(10 * factor + 1), int(10 * factor + 1)))
        elif mutation_type == 1:
            self.threshold_factor = random.randint(1, 30) * 0.001
        elif mutation_type == 2:
            random.randint(AtrSignal.LT, AtrSignal.GT)
        
class BbandsSignalGenerator:
    
    def __init__(self):
        pass
    
    def generate(self):
        lhs = random.randint(BbandsSignal.OPEN, BbandsSignal.CLOSE)
        period = random.randint(2, 30)
        rhs = random.randint(BbandsSignal.OPEN, BbandsSignal.CLOSE)
        ineq_sign = random.randint(BbandsSignal.LT, BbandsSignal.GT)
        dev = random.randint(1, 6) * 0.5
        band_type = random.randint(BbandsSignal.UP, BbandsSignal.DOWN)
        return BbandsSignal(period, lhs, rhs, dev, ineq_sign, band_type)
    
    def id(self):
        return 'Bollinger bands'
            
            
class BbandsSignal(Signal):
    
    OPEN = 0
    HIGH = 1
    LOW = 2
    CLOSE = 3
    
    LT = 0
    GT = 1
    
    UP = 0
    DOWN = 1
    
    def __init__(self, period, lhs, rhs, dev, inequality_type, band_type):
        self.period = period
        self.lhs = lhs
        self.rhs = rhs
        self.dev = dev
        self.inequality_type = inequality_type
        self.band_type = band_type
        
        if inequality_type == SmaSignal.LT:
            self.inequality_sign_str = '<'
        else:
            self.inequality_sign_str = '>'
            
        if inequality_type == BbandsSignal.UP:
            self.band_type_str = 'up'
        else:
            self.band_type_str = 'down'
        
    def calculate(self, series):
        if self.lhs == BbandsSignal.OPEN:
            lhs = numpy.array([series.get_open(i) for i in range(0, series.length())])
        elif self.lhs == BbandsSignal.HIGH:
            lhs = numpy.array([series.get_high(i) for i in range(0, series.length())])
        elif self.lhs == BbandsSignal.LOW:
            lhs = numpy.array([series.get_low(i) for i in range(0, series.length())])
        elif self.lhs == BbandsSignal.CLOSE:
            lhs = numpy.array([series.get_close(i) for i in range(0, series.length())])
            
        if self.rhs == BbandsSignal.OPEN:
            rhs = numpy.array([series.get_open(i) for i in range(0, series.length())])
        elif self.rhs == BbandsSignal.HIGH:
            rhs = numpy.array([series.get_high(i) for i in range(0, series.length())])
        elif self.rhs == BbandsSignal.LOW:
            rhs = numpy.array([series.get_low(i) for i in range(0, series.length())])
        elif self.rhs == BbandsSignal.CLOSE:
            rhs = numpy.array([series.get_close(i) for i in range(0, series.length())])
            
        (upband, _, downband) = talib.BBANDS(rhs, self.period, self.dev, self.dev)
        
        
        
        if self.band_type == BbandsSignal.UP:
            band = upband
        else:
            band = downband
        
        result = [self.calc_signal(l, r) for (l, r) in zip(lhs, band)]
        return result
    
    def calc_signal(self, l, r):
        if self.inequality_type == BbandsSignal.LT:
            return l < r
        else:
            return l > r
        
    def get_text(self):
        return '{:s}[0] {:s} bband({:s}, {:s}, {:.2f}, {:d})'.format(self.component_to_str(self.lhs), self.inequality_sign_str, self.component_to_str(self.rhs), self.band_type_str, self.dev, self.period) 
    
    def component_to_str(self, component):
        if component == BbandsSignal.OPEN:
            return "open"
        elif component == BbandsSignal.HIGH:
            return "high"
        elif component == BbandsSignal.LOW:
            return "low"
        elif component == BbandsSignal.CLOSE:
            return "close"
        else:
            return "??"
        
class PivotPointsSignalGenerator:
    
    def __init__(self):
        pass
    
    def generate(self):
        lhs = random.randint(PivotPointsSignal.OPEN, PivotPointsSignal.R3)
        lhs_shift = random.randint(0, 10)
        rhs = random.randint(PivotPointsSignal.OPEN, PivotPointsSignal.R3)
        rhs_shift = random.randint(0, 10)
        return PivotPointsSignal(lhs, lhs_shift, rhs, rhs_shift)
    
    def id(self):
        return 'Pivot points'
            
            
class PivotPointsSignal(Signal):
    
    OPEN = 0
    HIGH = 1
    LOW = 2
    CLOSE = 3
    
    PP = 4
    S1 = 5
    S2 = 6
    S3 = 7
    
    R1 = 8
    R2 = 9
    R3 = 10
    
    def __init__(self, lhs, lhs_shift, rhs, rhs_shift):
        self.lhs = lhs
        self.lhs_shift = lhs_shift
        self.rhs = rhs
        self.rhs_shift = rhs_shift
        
    def calculate(self, series):
        result = []
        for i in range(0, series.length()):
            lhs = self.calculate_signal(series, self.lhs, i - self.lhs_shift)
            rhs = self.calculate_signal(series, self.rhs, i - self.rhs_shift)
            if i - self.lhs_shift >= 0 and i - self.rhs_shift >= 0:
                result.append(lhs < rhs)
            else:
                result.append(False)
            
        return result
    
    def calculate_signal(self, series, signal_type, ix):
        if signal_type == PivotPointsSignal.OPEN:
            return series.get_open(ix)
        elif signal_type == PivotPointsSignal.HIGH:
            return series.get_high(ix)
        elif signal_type == PivotPointsSignal.LOW:
            return series.get_low(ix)
        elif signal_type == PivotPointsSignal.CLOSE:
            return series.get_close(ix)
        elif signal_type == PivotPointsSignal.PP:
            return (series.get_close(ix) + series.get_high(ix) + series.get_low(ix)) / 3
        elif signal_type == PivotPointsSignal.S1:
            pp = (series.get_close(ix) + series.get_high(ix) + series.get_low(ix)) / 3
            return pp * 2 - series.get_high(ix)
        elif signal_type == PivotPointsSignal.S2:
            pp = (series.get_close(ix) + series.get_high(ix) + series.get_low(ix)) / 3
            return pp - series.get_high(ix) + series.get_low(ix)  
        elif signal_type == PivotPointsSignal.S3:
            pp = (series.get_close(ix) + series.get_high(ix) + series.get_low(ix)) / 3
            return pp - 2 * series.get_high(ix) + 2 * series.get_low(ix)
        elif signal_type == PivotPointsSignal.R1:
            pp = (series.get_close(ix) + series.get_high(ix) + series.get_low(ix)) / 3
            return pp * 2 - series.get_low(ix)
        elif signal_type == PivotPointsSignal.R2:
            pp = (series.get_close(ix) + series.get_high(ix) + series.get_low(ix)) / 3
            return pp + series.get_high(ix) - series.get_low(ix)  
        elif signal_type == PivotPointsSignal.R3:
            pp = (series.get_close(ix) + series.get_high(ix) + series.get_low(ix)) / 3
            return pp + 2 * series.get_high(ix) - 2 * series.get_low(ix)
        
    
    def get_text(self):
        return "{:s}[{:d}] < {:s}[{:d}]".format(self.component_str(self.lhs), self.lhs_shift, self.component_str(self.rhs), self.rhs_shift)
    
    def component_str(self, comp_id):
        if comp_id == PivotPointsSignal.OPEN:
            return "open"
        elif comp_id == PivotPointsSignal.HIGH:
            return "high"
        elif comp_id == PivotPointsSignal.LOW:
            return "low"
        elif comp_id == PivotPointsSignal.CLOSE:
            return "close"
        elif comp_id == PivotPointsSignal.PP:
            return "pivot"
        elif comp_id == PivotPointsSignal.S1:
            return "s1"
        elif comp_id == PivotPointsSignal.S2:
            return "s2"  
        elif comp_id == PivotPointsSignal.S3:
            return "s3"
        elif comp_id == PivotPointsSignal.R1:
            return "r1"
        elif comp_id == PivotPointsSignal.R2:
            return "r2"  
        elif comp_id == PivotPointsSignal.R3:
            return "r3"
        
class StochasticSignalGenerator:
    
    def __init__(self):
        pass
    
    def generate(self):
        shift = random.randint(0, 3)
        period = random.randint(2, 30)
        period2 = random.randint(2, 30)
        threshold = random.randrange(1, 9) * 10
        ineq_type = random.randint(StochasticSignal.LT, StochasticSignal.GT)
        return StochasticSignal(period, period2, threshold, ineq_type, shift)
    
    def id(self):
        return 'Stochastic'
        

class StochasticSignal(Signal):
    
    LT = 0
    GT = 1
    
    def __init__(self, period, period2, threshold, inequality_type, shift):
        self.period = period
        self.period2 = period2
        self.threshold = threshold
        self.inequality_type = inequality_type
        self.shift = shift
        if inequality_type == StochasticSignal.LT:
            self.inequality_sign_str = '<'
        else:
            self.inequality_sign_str = '>'
        
    def calculate(self, series):
        closes = numpy.array([series.get_close(i) for i in range(0, series.length())])
        highs = numpy.array([series.get_high(i) for i in range(0, series.length())])
        lows = numpy.array([series.get_low(i) for i in range(0, series.length())])
        
        stoch_k, stoch_d = talib.STOCHF(highs, lows, closes, self.period, self.period2)
        
        result = [self.calc_signal(v) for v in stoch_k]
        if self.shift == 0:
            return result
        else:
            return [False] * self.shift + result[:-self.shift]
    
    def calc_signal(self, value):
        if self.inequality_type == StochasticSignal.LT:
            return value < self.threshold
        else:
            return value > self.threshold
        
    def get_text(self):
        return "stoch(c, {:d})[{:d}] {:s} {:d}".format(self.period, self.shift, self.inequality_sign_str, int(self.threshold))
    
class IntradayBarNumberSignalGenerator:
    
    def __init__(self, max_ibn):
        self.max_ibn = max_ibn
    
    def generate(self):
        ibn = random.randint(0, self.max_ibn)
        ineq_type = random.randint(IntradayBarNumberSignal.LT, IntradayBarNumberSignal.EQ)
        return IntradayBarNumberSignal(ibn, ineq_type)
    
    def id(self):
        return 'IBN'
        
    
class IntradayBarNumberSignal(Signal):
    
    LT = 0
    GT = 1
    EQ = 2
    
    def __init__(self, ibn, inequality_type):
        self.ibn = ibn
        self.inequality_type = inequality_type
        if inequality_type == IntradayBarNumberSignal.LT:
            self.inequality_sign_str = '<'
        elif inequality_type == IntradayBarNumberSignal.GT:
            self.inequality_sign_str = '>'
        else:
            self.inequality_sign_str = '=='
        
    def calculate(self, series):
        ibn = []
        cur_date = None
        for i in range(0, series.length()):
            if series.get_dt(i).date() != cur_date:
                cur_date = series.get_dt(i).date()
                ctr = 0
            else:
                ctr += 1
            ibn.append(ctr)
            
        result = []
        for i in ibn:
            result.append(self.calc_signal(i))
        return result
    
    def calc_signal(self, ibn):
        if self.inequality_type == IntradayBarNumberSignal.LT:
            return ibn < self.ibn
        elif self.inequality_type == IntradayBarNumberSignal.GT:
            return ibn > self.ibn
        elif self.inequality_type == IntradayBarNumberSignal.EQ:
            return ibn == self.ibn
    
    def get_text(self):
        return "ibn {:s} {:d}".format(self.inequality_sign_str, self.ibn)