import pandas as pd
import datetime
import numpy as np
import plotly as pl
import plotly.graph_objs as go
import matplotlib.pyplot as plt
import math
import scipy
import random
import statistics 


import datetime 
import matplotlib.dates as mdates
import matplotlib.pyplot as plt

import mplfinance as mpf

import plotly
#import plotly.plotly as py
import plotly.graph_objs as go
# these two lines allow your code to show up in a notebook
from plotly.offline import init_notebook_mode, iplot
from plotly.subplots import make_subplots
init_notebook_mode()

import CoreTraidMath 
import CoreDraw

class Stochastic:
    
    def __init__(self, base_df, options={
        'dataType':'ohcl',
        'window':14,
        'windowSMA':5
    }, needFig=False,showOnlyIndex=True,drawFig=False
                ):
    
        self.base_df=base_df.reset_index(drop=True)
        self.options=options

        self.ans=self.getAns()
        if needFig:
            self.fig=self.pltShow(showOnlyIndex,drawFig)
        
    def getKn(self):
        ans={}
        y=np.asarray([])
        x=np.asarray([])
        for i in range(self.options['window'],self.base_df.shape[0]):
            minValue=min(self.base_df['low'][i-self.options['window']:i])
            maxValue=max(self.base_df['high'][i-self.options['window']:i])
            
            y=np.append(y,(self.base_df['close'][i-1]-minValue)/(maxValue-minValue))
            x=np.append(x,self.base_df['date'][i-1])
            #print(i,minValue,maxValue,self.base_df[self.options['colName']['close']][i],y[-1])
        ans['y'],ans['x']=y,x
        
        
        
        return ans
        
        
    def getSMA(self,col):
        ans=None
        ser = pd.Series(col, copy=False)
        op={'dataType':'series',
            'action':'findMean',
            'actionOptions':{'MeanType':'SMA','window':self.options['windowSMA']}
        }        
        ans=np.asarray(CoreTraidMath.CoreMath(ser,op).ans)        
        return ans
        #return np.convolve(col, np.ones(self.options['windowSMA']), 'valid') /self.options['windowSMA']
        
        
        
    
    def getDn(self,col):
        ans={}
        y=np.asarray([])
        x=np.asarray([])
        for i in range(self.options['windowSMA'],len(col['y'])):
            y=np.append(y, self.getSMA(col['y'][i-self.options['windowSMA']:i]))
            x=np.append(x,col['x'][i])
        
        ans['y'],ans['x']=y,x
        return ans
    
    def getAns(self):
        ans={}
        ans['Kn']=self.getKn()
        ans['Dn']=self.getDn(ans['Kn'])

        #print(ans)
        return(ans)
    
    
    
    def pltShow(self,showOnlyIndex,drawFig):
        ans=None
        
        
        
        req=[]
        
        row=1
        if not showOnlyIndex:
            
            row=2
            req.append({
                'vtype':'OCHL',
                'df':self.base_df,
                'row':1,
                'col':1,
                'name':'OHCL'

            })
            
        req.append({
            'vtype':'Scatter',
            'df':pd.DataFrame(
                {'value':self.ans['Kn']['y'],'date':self.ans['Kn']['x']}) ,
            'row':row,
            'col':1,
            'name':'Kn'
            
        })
        req.append({
            'vtype':'Scatter',
            'df':pd.DataFrame(
                {'value':self.ans['Dn']['y'],'date':self.ans['Dn']['x']}) ,
            'row':row,
            'col':1,
            'name':'Dn'
            
        })
        
        self.figDict=req

        

                
        ans = CoreDraw.coreDraw(req,drawFig)
        
        return ans