using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Windows.Forms;
using KGdev.BI3D.Revit.Common;
using Newtonsoft.Json;

namespace KGdev.BI3D.Revit.Addin.MainWindow.External.BrowserConnector
{
    public class ExternalMainWindow : IMainWindow
    {
        public bool IsVisible
        {
            get
            {
                bool flag = this.browserProcess == null;
                bool flag2;
                if (flag)
                {
                    flag2 = false;
                }
                else
                {
                    bool hasExited = this.browserProcess.HasExited;
                    if (hasExited)
                    {
                        flag2 = false;
                    }
                    else
                    {
                        bool flag3 = this.messageHandler.BrowserHandle == IntPtr.Zero;
                        flag2 = !flag3;
                    }
                }
                return flag2;
            }
        }

        public ExternalMainWindow(IReduxReducer reducer)
        {
            this.reducer = reducer;
            reducer.OnStateChanged += this.Reducer_OnStateChanged;
            this.messageHandler.MessageReceivedEvent += this.MessageHandler_MessageReceivedEvent;
        }

        private void Reducer_OnStateChanged(object sender, Dictionary<string, object> e)
        {
            string text = JsonConvert.SerializeObject(e);
            this.messageHandler.Send(text);
        }

        private void MessageHandler_MessageReceivedEvent(object sender, MessageReceivedEventArgs e)
        {
            try
            {
                string message = e.Message;
                Dictionary<string, object> dictionary = JsonConvert.DeserializeObject<
                    Dictionary<string, object>
                >(message);
                this.reducer.Reduce(dictionary);
            }
            catch (Exception ex)
            {
                MessageBox.Show(
                    "Something went wrong when processing the request. Please contact info@kg-dev.be."
                );
            }
        }

        public void Close()
        {
            bool flag = this.browserProcess == null;
            if (!flag)
            {
                bool hasExited = this.browserProcess.HasExited;
                if (!hasExited)
                {
                    this.browserProcess.Kill();
                }
            }
        }

        public void Show()
        {
            bool flag = !this.IsVisible;
            if (flag)
            {
                this.CreateNew();
            }
            IntPtr browserHandle = this.messageHandler.BrowserHandle;
            User32.SetForegroundWindow(browserHandle);
        }

        private void CreateNew()
        {
            Process process = new Process();
            process.StartInfo.FileName = Path.Combine(
                this.assemblyDirectory,
                "KGdev.BI3D.Revit.Addin.MainWindow.External.Browser.exe"
            );
            process.StartInfo.Arguments = string.Format(
                "{0} {1}",
                this.messageHandler.Handle,
                Process.GetCurrentProcess().Id
            );
            process.Start();
            this.browserProcess = process;
        }

        private const string BROWSER_EXECUTABLE_RELATIVE_PATH =
            "KGdev.BI3D.Revit.Addin.MainWindow.External.Browser.exe";

        private readonly MessageHandler messageHandler = new MessageHandler();

        private readonly string assemblyDirectory = Path.GetDirectoryName(
            new Uri(Assembly.GetExecutingAssembly().CodeBase).LocalPath
        );

        private Process browserProcess;

        private IReduxReducer reducer;
    }
}