using System.Reflection;
using System.Windows;
using System.Windows.Input;
using System.Windows.Threading;
using Azaion.Annotator.DTO;
using LibVLCSharp.Shared;
using MediatR;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Serilog;
using Azaion.Annotator.Extensions;

namespace Azaion.Annotator;

public partial class App : Application
{
    private readonly IHost _host;
    private readonly ILogger<App> _logger;
    private readonly IMediator _mediator;

    public App()
    {
        Log.Logger = new LoggerConfiguration()
            .Enrich.FromLogContext()
            .MinimumLevel.Information()
            .WriteTo.Console()
            .WriteTo.File(
                path: "Logs/log.txt",
                rollingInterval: RollingInterval.Day)
            .CreateLogger();

        _host = Host.CreateDefaultBuilder()
            .ConfigureServices((context, services) =>
            {
                services.AddSingleton<MainWindow>();
                services.AddSingleton<HelpWindow>();
                services.AddMediatR(c => c.RegisterServicesFromAssembly(Assembly.GetExecutingAssembly()));
                services.AddSingleton<LibVLC>(_ => new LibVLC());
                services.AddSingleton<FormState>();
                services.AddSingleton<MediaPlayer>(sp =>
                {
                    var libVLC = sp.GetRequiredService<LibVLC>();
                    return new MediaPlayer(libVLC);
                });
                services.AddSingleton<IConfigRepository, FileConfigRepository>();
                services.AddSingleton<Config>(sp => sp.GetRequiredService<IConfigRepository>().Get());
                services.AddSingleton<PlayerControlHandler>();
            })
            .UseSerilog()
            .Build();
        _mediator = _host.Services.GetRequiredService<IMediator>();
        _logger = _host.Services.GetRequiredService<ILogger<App>>();
        DispatcherUnhandledException += OnDispatcherUnhandledException;
    }
    
    private void OnDispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e)
    {
        _logger.LogError(e.Exception, e.Exception.Message);
        e.Handled = true;
    }

    protected override void OnStartup(StartupEventArgs e)
    {
        EventManager.RegisterClassHandler(typeof(UIElement), UIElement.KeyDownEvent, new RoutedEventHandler(GlobalClick));
        _host.Start();
        _host.Services.GetRequiredService<MainWindow>().Show();

        base.OnStartup(e);
    }

    private void GlobalClick(object sender, RoutedEventArgs e)
    {
        var args = (KeyEventArgs)e;
        _ = ThrottleExt.Throttle(() => _mediator.Publish(new KeyEvent(sender, args)), TimeSpan.FromMilliseconds(50));
    }
}