using Avalonia;
using Avalonia.Controls;
using Avalonia.Controls.ApplicationLifetimes;
using Avalonia.Input.Platform;
using Avalonia.Markup.Xaml;
using JdeScoping.ConfigManager.Core.DependencyInjection;
using JdeScoping.ConfigManager.Ui.Services;
using JdeScoping.ConfigManager.Ui.ViewModels;
using Microsoft.Extensions.DependencyInjection;
using Serilog;
using Serilog.Events;

namespace JdeScoping.ConfigManager.Ui;

public partial class App : Avalonia.Application
{
    /// <summary>
    /// Gets the dependency injection service provider for the application.
    /// </summary>
    public static IServiceProvider Services { get; private set; } = null!;

    /// <inheritdoc />
    public override void Initialize()
    {
        AvaloniaXamlLoader.Load(this);
    }

    /// <inheritdoc />
    public override void OnFrameworkInitializationCompleted()
    {
        var services = new ServiceCollection();
        ConfigureServices(services);
        Services = services.BuildServiceProvider();

        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
        {
            desktop.MainWindow = new Views.MainWindow
            {
                DataContext = Services.GetRequiredService<MainWindowViewModel>()
            };

            // Ensure logs are flushed on exit
            desktop.ShutdownRequested += (_, _) => Log.CloseAndFlush();
        }

        base.OnFrameworkInitializationCompleted();
    }

    private void ConfigureServices(IServiceCollection services)
    {
        // Configure Serilog with daily rolling file
        var logsPath = Path.Combine(AppContext.BaseDirectory, "logs");
        Directory.CreateDirectory(logsPath);

        Log.Logger = new LoggerConfiguration()
            .MinimumLevel.Information()
            .MinimumLevel.Override("Microsoft", LogEventLevel.Warning)
            .MinimumLevel.Override("Avalonia", LogEventLevel.Warning)
            .Enrich.FromLogContext()
            .WriteTo.File(
                path: Path.Combine(logsPath, "configmanager-.log"),
                rollingInterval: RollingInterval.Day,
                retainedFileCountLimit: 30,
                outputTemplate: "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}] {Message:lj}{NewLine}{Exception}")
            .CreateLogger();

        // Logging
        services.AddLogging(builder => builder.AddSerilog(dispose: true));

        // Add all ConfigManager.Core services
        services.AddConfigManagerCore();

        // Platform Services (Avalonia-specific)
        services.AddSingleton<IDialogService>(sp =>
            new AvaloniaDialogService(GetMainWindow));
        services.AddSingleton<IClipboardService>(sp =>
            new AvaloniaClipboardService(GetClipboard));

        // ViewModels
        services.AddTransient<MainWindowViewModel>();
    }

    private Window? GetMainWindow()
    {
        return (ApplicationLifetime as IClassicDesktopStyleApplicationLifetime)?.MainWindow;
    }

    private IClipboard? GetClipboard()
    {
        return GetMainWindow()?.Clipboard;
    }
}