Stochastic-Calculator/stoch_calculator.cpp at main · amirali110/Stochastic-Calculator · GitHub

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#include "stoch_calculator.h"
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QNetworkRequest>
#include <QEventLoop>
#include <QObject>
#include <QString>
#include <QDateTime>
#include <QJsonArray>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonValue>
#include <QVariant>
#include <iostream>
#include <vector>
#include <QString>


Stoch_calculator::Stoch_calculator()
{


}


void Stoch_calculator::set_k_period(int period){

    Stoch_calculator::k_period=period;

}


void Stoch_calculator::set_smoothing(int smoothing){

    Stoch_calculator::smooth=smoothing;

}


double Stoch_calculator::simple_stochastic_calculate(std::vector<double> high, std::vector<double> low, double close)
{

    std::stable_sort(high.begin(),high.end());
    std::stable_sort(low.begin(),low.end());


    return (close-low[0])/(high[Stoch_calculator::k_period-1]-low[0]);


}


double Stoch_calculator::Get_K_stochastic(int timeframe_num, QString symbol){


    QString suffix;         //timeframe type


    if(timeframe_num<60) suffix="m";    //minute

    else if(timeframe_num>=60){
        suffix="h";          //hour
        timeframe_num=timeframe_num/60;

    }else if(timeframe_num==1440){
        suffix="d";           //day
        timeframe_num=1;

    }else if(timeframe_num==10080){
        suffix="w";           //week
        timeframe_num=1;
    }


    QNetworkAccessManager *acc=new QNetworkAccessManager;


    const QString url="https://api.binance.com/api/v3/klines";        //get data from binance


    QNetworkRequest req((QUrl(url+"?symbol="+symbol+"&interval="+QString::number(timeframe_num)+suffix+"&startTime="+QString::number(QDateTime::currentDateTime().toTime_t()-((Stoch_calculator::k_period+Stoch_calculator::smooth)*60*timeframe_num))+"000"+"&endTime="+QString::number(QDateTime::currentDateTime().toTime_t()-(timeframe_num*60))+"000")));


    QNetworkReply *rep=acc->get(req);


    QEventLoop loop;
    QObject::connect(rep,&QNetworkReply::finished,&loop,&QEventLoop::quit);
    loop.exec();


    auto doc=QJsonDocument::fromJson(rep->readAll());


    double data[Stoch_calculator::k_period+smooth-1][4];                         //data[x][1]--> high
                                                                                //data[x][2]--> low
                                                                               //data[x][3]--> close


    QJsonArray array=doc.array();


    int i=0;

for(auto const json:array){


    if(json.type()==QJsonValue::Array){

        int n=0;


        for(auto const element:json.toArray()){


            if(element.type()==QJsonValue::String){


            QVariant var=element.toVariant();

            data[i][n]=var.toDouble();

            n++;

            if(n==4) break;

            }

        }

    }


    i++;


}


    std::vector <double> high;
    std::vector <double> low;

    double sum_stochastic=0;


    int x=0;

    for(int i=1;i<=smooth;i++){

        int index=0;

        high.clear();
        low.clear();

        while(index<Stoch_calculator::k_period){

            high.push_back(data[k_period+smooth-2-index-x][1]);
            low.push_back(data[k_period+smooth-2-index-x][2]);
            index++;

        }

      sum_stochastic+=Stoch_calculator::simple_stochastic_calculate(high,low,data[k_period+smooth-2-x][3]);

        x++;

    }


  // double stochastic_level=(data[Stoch_calculator::k_period-1][3]-low[0])/(high[Stoch_calculator::k_period-1]-low[0]);       //Stochastic_formula


   return (sum_stochastic/smooth)*100;


}