using System;
using System.Collections.Generic;
using NSEpy;
using NSEpy.Interfaces;
using NSEpy.Models;
using NSEpy.Orchestrators;
using TaLib.Extension;

class Backtester
{
    static void Main()
    {
        // Define the stock details
        string symbol = "TCS";
        int emaPeriod = 9;
        int rsiPeriod = 14;
        double sarAcceleration = 0.02;
        double sarMaximum = 0.2;
        int supportResistanceLookback = 20;
        double supportResistanceBuffer = 0.02;

        // Connect to the NSE data source
        NSE nse = new NSE();

        // Fetch historical data for backtesting
        var data = nse.GetHistoricalData(symbol, new DateTime(2022, 1, 1), new DateTime(2022, 12, 31), NSEIndex.NIFTY_50);

        // Calculate EMA
        double[] ema = data.Close.EMA(emaPeriod);

        // Calculate RSI
        double[] rsi = data.Close.RSI(rsiPeriod);

        // Calculate Parabolic SAR
        double[] sar = data.SAR(sarAcceleration, sarMaximum);

        // Calculate support and resistance levels
        double supportLevel = data.Close.TakeLast(supportResistanceLookback).Min() * (1 - supportResistanceBuffer);
        double resistanceLevel = data.Close.TakeLast(supportResistanceLookback).Max() * (1 + supportResistanceBuffer);

        // Initialize variables for tracking trades
        bool inPosition = false;
        double entryPrice = 0;
        double exitPrice = 0;
        double pnl = 0;

        // Perform backtesting
        for (int i = 0; i < data.Close.Count; i++)
        {
            // Detect divergence in RSI
            bool bullishDivergence = DetectBullishDivergence(data.Close.GetRange(0, i + 1), rsi.GetRange(0, i + 1));
            bool bearishDivergence = DetectBearishDivergence(data.Close.GetRange(0, i + 1), rsi.GetRange(0, i + 1));

            // Check for buy signal
            if (!inPosition && data.Close[i] > ema[i] && rsi[i] > 50 && data.Close[i] > sar[i] && data.Close[i] > resistanceLevel)
            {
                if (bullishDivergence)
                {
                    inPosition = true;
                    entryPrice = data.Close[i];
                    Console.WriteLine("Buy Signal: " + symbol + " at " + entryPrice);
                }
            }
            // Check for sell signal
            else if (inPosition && data.Close[i] < ema[i] && rsi[i] < 50 && data.Close[i] < sar[i] && data.Close[i] < supportLevel)
            {
                if (bearishDivergence)
                {
                    inPosition = false;
                    exitPrice = data.Close[i];
                    pnl += (exitPrice - entryPrice);
                    Console.WriteLine("Sell Signal: " + symbol + " at " + exitPrice);
                    Console.WriteLine("Profit/Loss: " + pnl);
                }
            }
        }
    }

    static bool DetectBullishDivergence(List<double> price, List<double> rsi)
    {
        // TODO: Implement bullish divergence detection logic
        return false;
    }

    static bool DetectBearishDivergence(List<double> price, List<double> rsi)    {
        // TODO: Implement bearish divergence detection logic
        return false;
    }
} 

C Sharp Online Compiler

Write, Run & Share C# code online using OneCompiler's C# online compiler for free. It's one of the robust, feature-rich online compilers for C# language, running on the latest version 8.0. Getting started with the OneCompiler's C# compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C# and start coding.

Read inputs from stdin

OneCompiler's C# online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

using System;
 
namespace Sample
{
  class Test
    {
      public static void Main(string[] args)
       {
         string name;
         name = Console.ReadLine();
         Console.WriteLine("Hello {0} ", name);
	}
     }
}

About C Sharp

C# is a general purpose object-oriented programming language by Microsoft. Though initially it was developed as part of .net but later it was approved by ECMA and ISO standards.

You can use C# to create variety of applications, like web, windows, mobile, console applications and much more using Visual studio.

Syntax help

Data types

Data TypeDescriptionRangesize
intTo store integers-2,147,483,648 to 2,147,483,6474 bytes
doubleto store large floating point numbers with decimalscan store 15 decimal digits8 bytes
floatto store floating point numbers with decimalscan store upto 7 decimal digits4 bytes
charto store single characters-2 bytes
stringto stores text-2 bytes per character
boolto stores either true or false-1 bit

Variables

Syntax

datatype variable-name = value;

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition or set of few conditions IF-ELSE is used.

if(conditional-expression) {
   // code
} 
else {
   // code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression) {    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
...    
    
default:     
 // code to be executed when all the above cases are not matched;    
} 

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement) {
  // code  
} 

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while(condition) {
 // code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {
  // code 
} while (condition);

Arrays

Array is a collection of similar data which is stored in continuous memory addresses. Array values can be fetched using index. Index starts from 0 to size-1.

Syntax

data-type[] array-name;

Methods

Method is a set of statements which gets executed only when they are called. Call the method name in the main function to execute the method.

Syntax

static void method-name() 
{
  // code to be executed
}