using System;
using System.Collections.Generic;
using System.IO;
using System.Windows;
using System.Windows.Controls;
using InstaSoftOfficeTool.Models;
using InstaSoftOfficeTool.Services;

namespace InstaSoftOfficeTool.Pages
{
    public partial class RemovePage : Page
    {
        private readonly MainWindow _main;
        private List<InstalledOffice> _detected;

        public RemovePage(MainWindow main)
        {
            InitializeComponent();
            _main = main;
            Loaded += (s, e) => DetectOffice();
        }

        private void DetectOffice()
        {
            _detected = OfficeDetector.Detect();

            OfficeListPanel.Children.Clear();

            if (_detected.Count == 0)
            {
                NoOfficeText.Visibility = Visibility.Visible;
                LicenseCleanupPanel.Visibility = Visibility.Collapsed;
                BtnRemove.IsEnabled = false;
                return;
            }

            foreach (var office in _detected)
            {
                var cb = new CheckBox
                {
                    Content = office.DisplayName + (string.IsNullOrEmpty(office.Version) ? "" : "  (" + office.Version + ")"),
                    IsChecked = true,
                    Style = (Style)FindResource("FluentCheckBox"),
                    Tag = office,
                    Margin = new Thickness(0, 4, 0, 4),
                    FontSize = 14
                };
                OfficeListPanel.Children.Add(cb);
            }
        }

        private async void BtnRemove_Click(object sender, RoutedEventArgs e)
        {
            bool confirmed = await _main.ConfirmAsync(
                "Office elt\u00e1vol\u00edt\u00e1s",
                "Biztosan el szeretn\u00e9 t\u00e1vol\u00edtani a kiv\u00e1lasztott Office telep\u00edt\u00e9seket?",
                "Elt\u00e1vol\u00edt\u00e1s", "M\u00e9gse");

            if (!confirmed) return;

            BtnRemove.IsEnabled = false;
            LogPanel.Visibility = Visibility.Visible;

            try
            {
                var c2rProducts = new System.Collections.Generic.List<string>();

                foreach (UIElement child in OfficeListPanel.Children)
                {
                    if (child is CheckBox cb && cb.IsChecked == true)
                    {
                        var office = (InstalledOffice)cb.Tag;
                        if (office.IsClickToRun)
                        {
                            c2rProducts.Add(office.ProductCode);
                        }
                        else if (!string.IsNullOrEmpty(office.ProductCode))
                        {
                            AppendLog("MSI elt\u00e1vol\u00edt\u00e1s: " + office.DisplayName);
                            var runner = new ProcessRunner();
                            runner.OutputReceived += msg => Dispatcher.Invoke(() => AppendLog(msg));
                            int code = await runner.RunAsync("msiexec", "/x " + office.ProductCode + " /qb");
                            AppendLog("MSI exit code: " + code);
                        }
                    }
                }

                if (c2rProducts.Count > 0)
                {
                    AppendLog("Click-to-Run term\u00e9kek elt\u00e1vol\u00edt\u00e1sa: " + string.Join(", ", c2rProducts));

                    var downloader = new OdtDownloader();
                    downloader.StatusChanged += msg => Dispatcher.Invoke(() => AppendLog(msg));

                    bool ok = await downloader.DownloadAndExtractAsync();
                    if (!ok)
                    {
                        AppendLog("HIBA: Az ODT let\u00f6lt\u00e9se sikertelen.");
                        BtnRemove.IsEnabled = true;
                        return;
                    }

                    string removeXml = OdtXmlGenerator.GenerateRemoveProducts(c2rProducts.ToArray());
                    string xmlPath = Path.Combine(downloader.OdtFolder, "remove.xml");
                    File.WriteAllText(xmlPath, removeXml);

                    AppendLog("Remove XML:");
                    AppendLog(removeXml);
                    AppendLog("");
                    AppendLog("Futtat\u00e1s: setup.exe /configure remove.xml");
                    AppendLog("Ez eltarthat n\u00e9h\u00e1ny percig...");

                    int exitCode = await downloader.RunRemoveAsync(xmlPath,
                        msg => Dispatcher.Invoke(() => AppendLog(msg)));

                    AppendLog("setup.exe exit code: " + exitCode);

                    if (exitCode == 0)
                    {
                        AppendLog("Office sikeresen elt\u00e1vol\u00edtva.");
                    }
                    else
                    {
                        AppendLog("FIGYELEM: Az elt\u00e1vol\u00edt\u00e1s nem siker\u00fclt (k\u00f3d: " + exitCode + ")");
                        AppendLog("Pr\u00f3b\u00e1lja meg manu\u00e1lisan: Vez\u00e9rl\u0151pult > Programok elt\u00e1vol\u00edt\u00e1sa");
                    }
                }

                if (CbCleanLicense.IsChecked == true)
                {
                    AppendLog("");
                    AppendLog("Licenc-adatb\u00e1zis tiszt\u00edt\u00e1sa...");
                    var lm = new LicenseManager();
                    if (lm.FindOspp())
                    {
                        var cleanResult = await lm.RemoveAllKeysAsync();
                        AppendLog(cleanResult);
                    }
                    else
                    {
                        AppendLog("Az ospp.vbs nem tal\u00e1lhat\u00f3 \u2014 licenc-tiszt\u00edt\u00e1s kihagyva.");
                    }
                }

                AppendLog("");
                AppendLog("K\u00e9sz. Lista friss\u00edt\u00e9se...");
                DetectOffice();

                if (_detected.Count == 0)
                {
                    AppendLog("Nincs t\u00f6bb telep\u00edtett Office.");
                }
            }
            catch (Exception ex)
            {
                AppendLog("V\u00e1ratlan hiba: " + ex.Message);
                AppendLog(ex.StackTrace);
            }

            BtnRemove.IsEnabled = _detected.Count > 0;
            _main.ShowCloseButton();
        }

        private void AppendLog(string text)
        {
            LogText.Text += DateTime.Now.ToString("HH:mm:ss") + "  " + text + "\n";
            LogText.ScrollToEnd();
        }
    }
}