using System;
using System.Reactive;
using Artemis.Core;
using Artemis.Core.Ninject;
using Artemis.UI.Exceptions;
using Artemis.UI.Ninject;
using Artemis.UI.Screens.Root;
using Artemis.UI.Shared.Controls.DataModelPicker;
using Artemis.UI.Shared.Ninject;
using Artemis.UI.Shared.Services.Interfaces;
using Artemis.VisualScripting.Ninject;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Controls.ApplicationLifetimes;
using Ninject;
using Ninject.Modules;
using ReactiveUI;
using Splat.Ninject;

namespace Artemis.UI;

public static class ArtemisBootstrapper
{
    private static StandardKernel? _kernel;
    private static Application? _application;

    public static StandardKernel Bootstrap(Application application, params INinjectModule[] modules)
    {
        if (_application != null || _kernel != null)
            throw new ArtemisUIException("UI already bootstrapped");

        Utilities.PrepareFirstLaunch();

        _application = application;
        _kernel = new StandardKernel();
        _kernel.Settings.InjectNonPublic = true;

        _kernel.Load<CoreModule>();
        _kernel.Load<UIModule>();
        _kernel.Load<SharedUIModule>();
        _kernel.Load<NoStringNinjectModule>();
        _kernel.Load(modules);
        _kernel.UseNinjectDependencyResolver();

        DataModelPicker.DataModelUIService = _kernel.Get<IDataModelUIService>();

        return _kernel;
    }

    public static void Initialize()
    {
        if (_application == null || _kernel == null)
            throw new ArtemisUIException("UI not yet bootstrapped");
        if (_application.ApplicationLifetime is not IClassicDesktopStyleApplicationLifetime desktop)
            return;

        // Don't shut down when the last window closes, we might still be active in the tray
        desktop.ShutdownMode = ShutdownMode.OnExplicitShutdown;
        // Create the root view model that drives the UI
        RootViewModel rootViewModel = _kernel.Get<RootViewModel>();
        // Apply the root view model to the data context of the application so that tray icon commands work
        _application.DataContext = rootViewModel;

        RxApp.DefaultExceptionHandler = Observer.Create<Exception>(DisplayUnhandledException);
    }

    private static void DisplayUnhandledException(Exception exception)
    {
        _kernel?.Get<IWindowService>().ShowExceptionDialog("Exception", exception);
    }
}