using Avalonia.Controls.Shapes;
using fis.Upgrader.Helpers;
using FisTools;
using System;
using System.Diagnostics;
using System.IO;
using System.Threading;
using System.Threading.Tasks;

namespace fis.Upgrader.Managers
{

    internal class UpgradeManager
    {
        private static UpgradeManager _instance;
        private double _lastProgress;

        public event EventHandler<double> OnUpgradeProgressChanged;
        public static UpgradeManager Instance
        {
            get {
                if (_instance == null)
                {
                    _instance = new UpgradeManager();
                }
                return _instance;
            }
        }
        private UpgradeManager() {
            
        }

        public void RunFullUpgrade()
        {
            Task.Run(() => {
                Thread.Sleep(30000);
                OnProgressChanged(0.98);
                Thread.Sleep(15000);
                OnProgressChanged(1.0);
            });
            ToolManager.Instance.LoaderCenter.KillProcessWithGivenName("fis");
            ToolManager.Instance.UpgradeCenter.ExecuteFullUpgrade(Logger.WriteLine, OnProgressChanged);
        }

        private void OnProgressChanged(double progress)
        {
            if (_lastProgress > progress)
            {
                Logger.WriteLine($"{progress} is returned ");
                return;
            }
            _lastProgress = progress;
            OnUpgradeProgressChanged?.Invoke(null, progress);
            if (progress >= 1.0)
            {
                Task.Run(() =>
                {
                    try
                    {
                        Thread.Sleep(1000);
                        var currentDir = AppDomain.CurrentDomain.BaseDirectory;
                        Logger.WriteLine($"Current dir is{currentDir}");
                        var fisDir = Directory.GetParent(currentDir)!.Parent!.FullName;
                        Logger.WriteLine($"fis dir is{fisDir}");
                        var fileFullName = System.IO.Path.Combine(fisDir, "fis.exe");
                        if (!File.Exists(fileFullName))
                        {
                            Logger.WriteLine($"{fileFullName} not exist");
                        }
                        Logger.WriteLine($"Full name is{fileFullName}");
                        ToolManager.Instance.LoaderCenter.StartProcessDirectly(fileFullName);
                    }
                    catch (Exception ex)
                    {
                        Logger.WriteLine($"Exception happened {ex} ");

                    }
                    finally
                    {
                        ToolManager.Instance.LoaderCenter.KillProcessWithGivenName("fis.Upgrader");
                    }
                });

            }
            else {
                Logger.WriteLine($"Current progress is {progress} ");
            }
        }
    }
}