using Microsoft.VisualBasic.CompilerServices;
using Pilz.UI;
using Pilz.UI.Telerik.Dialogs;
using Pilz.Updating.GUIBase;
using System.ComponentModel;
using Telerik.WinControls;

namespace Pilz.Updating.Client.GUI;

public class UpdateClientGUI
{
    // F i e l d s

    private Form parentForm;
    private SimpleActionDialog curProgressDialog;
    private readonly UpdateClient updateClient;

    // P r o p e r t i e s

    public bool UseHiddenSearch { get; set; } = false;

    private static Image MyAppIcon => Icon.ExtractAssociatedIcon(IO.Extensions.GetExecutablePath()).ToBitmap();

    // C o n s t r u c t o r s

    public UpdateClientGUI(UpdateClient updateClient)
    {
        this.updateClient = updateClient;
        updateClient.UpdateStatusChanged += MyUpdateClient_UpdateStatusChanged;
        updateClient.DownloadingUpdate += MyUpdateClient_DownloadingUpdate;
        updateClient.InstallingUpdate += MyUpdateClient_InstallingUpdate;
        updateClient.UpdateInstallerStarted += MyUpdateClient_FinishWork;
        updateClient.NoUpdatesFound += MyUpdateClient_NoUpdatesFound;
    }

    ~UpdateClientGUI()
    {
        updateClient.UpdateStatusChanged -= MyUpdateClient_UpdateStatusChanged;
        updateClient.DownloadingUpdate -= MyUpdateClient_DownloadingUpdate;
        updateClient.InstallingUpdate -= MyUpdateClient_InstallingUpdate;
        updateClient.UpdateInstallerStarted -= MyUpdateClient_FinishWork;
        updateClient.NoUpdatesFound -= MyUpdateClient_NoUpdatesFound;
    }

    // F e a t u r e s

    public async Task UpdateInteractive(Form parentForm)
    {
        this.parentForm = parentForm;
        await updateClient.UpdateInteractive();
    }

    private void EndUpdating()
    {
        curProgressDialog?.Invoke(new Action(() => curProgressDialog.Close()));
    }

    private void MyUpdateClient_UpdateStatusChanged(UpdateStatus newStatus)
    {
        bool useGui = false;
        if (!(newStatus == UpdateStatus.Searching && UseHiddenSearch))
        {
            useGui = true;
        }

        if (useGui && curProgressDialog is null)
        {
            parentForm.Invoke(new Action(() =>
            {
                curProgressDialog = new SimpleActionDialog();
                curProgressDialog.SetCurrentState(UpdateStatus.Waiting);
                curProgressDialog.Show(parentForm);
            }));
        }

        curProgressDialog?.Invoke(new Action(() => curProgressDialog.SetCurrentState(newStatus)));
    }

    private void MyUpdateClient_DownloadingUpdate(UpdatePackageInfo pkg, CancelEventArgs e)
    {
        curProgressDialog?.Invoke(new Action(() => curProgressDialog.Hide()));
        var dres = default(DialogResult);
        parentForm.Invoke(new Action(() =>
        {
            var dialog = new UpdatesAvailableDialog(MyAppIcon, updateClient.CurrentVersion.Version.ToString(), updateClient.CurrentVersion.Channel.ToString(), Conversions.ToString(updateClient.CurrentVersion.Build), pkg.Version.Version.ToString(), pkg.Version.Channel.ToString(), Conversions.ToString(pkg.Version.Build), pkg.Notes, updateClient.InstallAsAdmin);
            var symbol = GlobalSymbolFactory.Instance.GetImage(GlobalSymbols.software_installer, UI.Telerik.SvgImageSize.Small).ToIcon();
            dres = RadDialogBase.ShowDialog(dialog, parentForm, LangRes.Title_UpdatesAvailable, symbol).Result;
        }));
        if (dres != DialogResult.OK)
        {
            e.Cancel = true;
            EndUpdating();
        }
        else
        {
            e.Cancel = false;
            curProgressDialog?.Invoke(new Action(() => curProgressDialog.Show()));
        }
    }

    private void MyUpdateClient_InstallingUpdate(UpdatePackageInfo pkg, CancelEventArgs e)
    {
        e.Cancel = false;
    }

    private void MyUpdateClient_FinishWork()
    {
        EndUpdating();
    }

    private void MyUpdateClient_NoUpdatesFound()
    {
        EndUpdating();

        if (!UseHiddenSearch)
            RadMessageBox.Show(UpdatingClientGuiLangRes.MsgBox_NoUpdatesFound, UpdatingClientGuiLangRes.MsgBox_NoUpdatesFound_Titel, MessageBoxButtons.OK, RadMessageIcon.Info);
    }
}