using System;
using System.Windows.Forms;
using Microsoft.Web.WebView2.WinForms;
using Microsoft.Owin.Hosting;
using VNCServerList.Web;
using Microsoft.Web.WebView2.Core;

namespace VNCServerList
{
    public partial class Form1 : Form
    {
        private WebView2 webView;
        private IDisposable webApp;

        public Form1()
        {
            InitializeComponent();
            this.Text = $"{Application.ProductName} ver {Application.ProductVersion}";
            StartWebServer();
            InitializeWebView();
            
        }

        private async void InitializeWebView()
        {
            webView = new WebView2();
            webView.Dock = DockStyle.Fill;
            this.Controls.Add(webView);

            try
            {
                await webView.EnsureCoreWebView2Async(null);
                
                // JavaScript에서 C# 메서드를 호출할 수 있도록 설정
                webView.CoreWebView2.WebMessageReceived += CoreWebView2_WebMessageReceived;
                
                webView.CoreWebView2.Navigate("http://localhost:8080");
            }
            catch (Exception ex)
            {
                MessageBox.Show($"WebView2 초기화 중 오류가 발생했습니다: {ex.Message}", "오류", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private async void CoreWebView2_WebMessageReceived(object sender, CoreWebView2WebMessageReceivedEventArgs e)
        {
            try
            {
                var message = e.TryGetWebMessageAsString();
                
                if (message == "OPEN_FILE_DIALOG")
                {
                    var filePath = ShowOpenFileDialog();
                    if (!string.IsNullOrEmpty(filePath))
                    {
                        // JavaScript로 결과 전송 (ExecuteScriptAsync 사용)
                        var script = $"window.receiveFilePath('{filePath.Replace("\\", "\\\\")}');";
                        await webView.CoreWebView2.ExecuteScriptAsync(script);
                    }
                }
            }
            catch (Exception ex)
            {
                System.Diagnostics.Debug.WriteLine($"WebView2 메시지 처리 오류: {ex.Message}");
            }
        }

        private string ShowOpenFileDialog()
        {
            using (var openFileDialog = new OpenFileDialog())
            {
                openFileDialog.Filter = "실행 파일 (*.exe)|*.exe|모든 파일 (*.*)|*.*";
                openFileDialog.Title = "VNC Viewer 실행 파일 선택";
                openFileDialog.InitialDirectory = @"C:\Program Files";

                if (openFileDialog.ShowDialog() == DialogResult.OK)
                {
                    return openFileDialog.FileName;
                }
            }
            return null;
        }

        private void StartWebServer()
        {
            try
            {
                var options = new StartOptions("http://localhost:8080");

                webApp = WebApp.Start<Startup>(options);
            }
            catch (Exception ex)
            {
                MessageBox.Show($"웹 서버 시작 중 오류가 발생했습니다: {ex.Message}", "오류", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        protected override void OnFormClosing(FormClosingEventArgs e)
        {
            webApp?.Dispose();
            base.OnFormClosing(e);
        }
    }
}