using System.Diagnostics;
using System.Reflection;
using Avalonia.Controls;
using MsBox.Avalonia;
using MsBox.Avalonia.Enums;
using Pilz;
using Pilz.Extensions;
using Pilz.Runtime;
using Pilz.Updating.Client;

namespace ModpackUpdater.Apps;

public class AppUpdates(string updateUrl, Window mainWindow)
{
    public event EventHandler? OnDownloadProgramUpdate;
    
    public async Task UpdateApp()
    {
#if !DISABLE_UPDATE
        try
        {
            await UpdateAppCore();
        }
        catch (Exception ex)
        {
            await MessageBoxManager.GetMessageBoxStandard(GeneralMsgBoxLangRes.UpdateAvailable_Title, string.Format(GeneralMsgBoxLangRes.UpdateAvailable, ex.Message), ButtonEnum.YesNo, MsBox.Avalonia.Enums.Icon.Info).ShowWindowAsync();
            mainWindow.IsEnabled = true;
        }
#endif
    }
    
    private async Task UpdateAppCore()
    {
        if (Debugger.IsAttached)
            return;
        
        var myAppPath = EnvironmentEx.ProcessPath!;
        var updater = new UpdateClient(updateUrl, Assembly.GetEntryAssembly()!.GetAppVersion(), AppChannel.Stable)
        {
            Distro = RuntimeInformationsEx.GetRuntimeIdentifier(),
        };
        
        if (await updater.CheckForUpdate() is {} packageToInstall
            && await MessageBoxManager.GetMessageBoxStandard(GeneralMsgBoxLangRes.UpdateAvailable_Title, GeneralMsgBoxLangRes.UpdateAvailable, ButtonEnum.YesNo, MsBox.Avalonia.Enums.Icon.Info).ShowWindowDialogAsync(mainWindow) == ButtonResult.Yes)
        {
            OnDownloadProgramUpdate?.Invoke(this, EventArgs.Empty);
            mainWindow.IsEnabled = false;
            if (await updater.DownloadPackageAsync(packageToInstall)
                && await updater.InstallPackageAsync(packageToInstall, myAppPath))
            {
                mainWindow.IsVisible = false;
                await Process.Start(myAppPath).WaitForExitAsync();
                Environment.Exit(0);
                return;
            }
            mainWindow.IsEnabled = true;
        }
    }
}