BacktestingInPlugins Sample¶

using System;
using cAlgo.API;
using cAlgo.API.Collections;
using cAlgo.API.Indicators;
using cAlgo.API.Internals;
using System.Linq;
using System.Text.Json;
using System.Text.Json.Nodes;

namespace cAlgo.Plugins
{
    [Plugin(AccessRights = AccessRights.None)]
    public class BacktestingInPluginsSample : Plugin
    {
        // Declaring the necessary UI elements
        // and the cBot (RobotType) selected in the ComboBox
        private Grid _grid;
        private ComboBox _cBotsComboBox;
        private Button _startBacktestingButton;
        private TextBlock _resultsTextBlock;
        private RobotType _selectedRobotType;

        protected override void OnStart()
        {
            // Initialising and structuring the UI elements
            _grid = new Grid(3, 1);
            _cBotsComboBox = new ComboBox();
            _startBacktestingButton = new Button
            {
                BackgroundColor = Color.Green,
                CornerRadius = new CornerRadius(5),
                Text = "Start Backtesting",
            };
            _resultsTextBlock = new TextBlock
            {
                HorizontalAlignment = HorizontalAlignment.Center,
                VerticalAlignment = VerticalAlignment.Center,
                Text = "Select a cBot...",
            };

            _grid.AddChild(_cBotsComboBox, 0, 0);
            _grid.AddChild(_startBacktestingButton, 1, 0);
            _grid.AddChild(_resultsTextBlock, 2, 0);

            var block = Asp.SymbolTab.AddBlock("Backtesting Plugin");
            block.Child = _grid;

            // Populating the ComboBox with existing cBots
            PopulateCBotsComboBox();

            // Assigning event handlers to the Button.Click,
            // ComboBox.SelectedItemChanged, and Backtesting.Completed events
            _startBacktestingButton.Click += StartBacktestingButton_Click;
            _cBotsComboBox.SelectedItemChanged += CBotsComboBox_SelectedItemChanged;
            Backtesting.Completed += Backtesting_Completed;
        }

        protected void StartBacktestingButton_Click(ButtonClickEventArgs obj)
        {
            // Initialising and configuring the backtesting settings
            var backtestingSettings = new BacktestingSettings 
            {
                DataMode = BacktestingDataMode.M1,
                StartTimeUtc = new DateTime(2023, 6, 1),
                EndTimeUtc = DateTime.UtcNow,
                Balance = 10000,
            };

            // Starting backtesting on EURUSD h1
            Backtesting.Start(_selectedRobotType, "EURUSD", TimeFrame.Hour, backtestingSettings);

            // Disabling other controls and changing
            // the text inside the TextBlock
            _cBotsComboBox.IsEnabled = false;
            _startBacktestingButton.IsEnabled = false;
            _resultsTextBlock.Text = "Backtesting in progress...";
        }

        protected void PopulateCBotsComboBox()
        {
            // Iterating over the AlgoRegistry and
            // getting the names of all installed cBots
            foreach (var robotType in AlgoRegistry.OfType<RobotType>())
            {
                _cBotsComboBox.AddItem(robotType.Name);
            }
        }

        protected void Backtesting_Completed(BacktestingCompletedEventArgs obj)
        {
            // Attaining the JSON results of backtesting
            string jsonResults = obj.JsonReport;

            // Converting the JSON string into a JsonNode
            JsonNode resultsNode = JsonNode.Parse(jsonResults);

            // Attaining the ROI and net profit from backtesting results
            _resultsTextBlock.Text = $"ROI: {resultsNode["main"]["roi"]}\nNet Profit: {resultsNode["main"]["netProfit"]}";

            // Re-enabling controls after backtesting is finished
            _cBotsComboBox.IsEnabled = true;
            _startBacktestingButton.IsEnabled = true;
        }

        protected void CBotsComboBox_SelectedItemChanged(ComboBoxSelectedItemChangedEventArgs obj)
        {
            // Updating the variable to always contain
            // the cBot selected in the ComboBox
            _selectedRobotType = AlgoRegistry.Get(obj.SelectedItem) as RobotType;
        }
    }
}