using System;
using System.IO;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using InstaSoftOfficeTool.Models;
using InstaSoftOfficeTool.Services;

namespace InstaSoftOfficeTool.Pages
{
    public partial class ProgressPage : Page
    {
        private readonly MainWindow _main;
        private readonly InstallConfig _config;

        public ProgressPage(MainWindow main, InstallConfig config)
        {
            InitializeComponent();
            _main = main;
            _config = config;
        }

        public async void StartInstallation()
        {
            try
            {
                // Step 1: Download ODT
                SetStepActive(Step1Icon, Step1Text);
                AppendLog("ODT let\u00f6lt\u00e9se indul...");

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

                bool downloaded = await downloader.DownloadAndExtractAsync();
                if (!downloaded)
                {
                    SetStepError(Step1Icon, Step1Text);
                    ShowDone(false, "Az ODT let\u00f6lt\u00e9se sikertelen.");
                    return;
                }
                SetStepDone(Step1Icon, Step1Text);

                // Step 2: Generate config XML
                SetStepActive(Step2Icon, Step2Text);
                AppendLog("Konfigur\u00e1ci\u00f3s XML gener\u00e1l\u00e1sa...");

                string xml = OdtXmlGenerator.Generate(_config);
                string xmlPath = Path.Combine(downloader.OdtFolder, "configuration.xml");
                File.WriteAllText(xmlPath, xml);
                AppendLog("XML mentve: " + xmlPath);

                SetStepDone(Step2Icon, Step2Text);

                // Step 3: Run setup.exe /configure
                SetStepActive(Step3Icon, Step3Text);
                AppendLog("Office telep\u00edt\u00e9s ind\u00edt\u00e1sa...");
                AppendLog("setup.exe /configure \"" + xmlPath + "\"");

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

                if (exitCode == 0)
                {
                    SetStepDone(Step3Icon, Step3Text);
                    ShowDone(true, "Az Office sikeresen telep\u00fclt!");
                }
                else
                {
                    SetStepError(Step3Icon, Step3Text);
                    ShowDone(false, "A telep\u00edt\u00e9s hibak\u00f3ddal fejez\u0151d\u00f6tt be: " + exitCode);
                }
            }
            catch (Exception ex)
            {
                AppendLog("HIBA: " + ex.Message);
                ShowDone(false, "V\u00e1ratlan hiba t\u00f6rt\u00e9nt.");
            }
        }

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

        private void SetStepActive(TextBlock icon, TextBlock text)
        {
            Dispatcher.Invoke(() =>
            {
                icon.Text = "\uE72A";
                icon.Foreground = (Brush)FindResource("AccentBrush");
                text.Foreground = (Brush)FindResource("TextPrimaryBrush");
                text.FontWeight = FontWeights.SemiBold;
            });
        }

        private void SetStepDone(TextBlock icon, TextBlock text)
        {
            Dispatcher.Invoke(() =>
            {
                icon.Text = "\uE73E";
                icon.Foreground = (Brush)FindResource("SuccessBrush");
                text.Foreground = (Brush)FindResource("SuccessBrush");
                text.FontWeight = FontWeights.Normal;
            });
        }

        private void SetStepError(TextBlock icon, TextBlock text)
        {
            Dispatcher.Invoke(() =>
            {
                icon.Text = "\uE711";
                icon.Foreground = (Brush)FindResource("ErrorBrush");
                text.Foreground = (Brush)FindResource("ErrorBrush");
                text.FontWeight = FontWeights.Normal;
            });
        }

        private void ShowDone(bool success, string message)
        {
            Dispatcher.Invoke(() =>
            {
                MainProgress.IsIndeterminate = false;
                MainProgress.Value = 100;
                TitleText.Text = success ? "Telep\u00edt\u00e9s befejezve" : "Telep\u00edt\u00e9s sikertelen";

                DoneIcon.Text = success ? "\uE73E" : "\uE711";
                DoneIcon.Foreground = success
                    ? (Brush)FindResource("SuccessBrush")
                    : (Brush)FindResource("ErrorBrush");
                DoneText.Text = message;
                DoneText.Foreground = DoneIcon.Foreground;
                DonePanel.Visibility = Visibility.Visible;

                _main.ShowCloseButton();
            });
        }
    }
}