using System.IO;
using System.Windows;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using PiiRedaction.TestHarness.Wpf.DependencyInjection;
using PiiRedaction.TestHarness.Wpf.Services;
using PiiRedaction.TestHarness.Wpf.ViewModels;

namespace PiiRedaction.TestHarness.Wpf;

public partial class App : Application
{
    private IHost? _host;

    protected override async void OnStartup(StartupEventArgs e)
    {
        base.OnStartup(e);

        _host = Host.CreateDefaultBuilder()
            .ConfigureAppConfiguration((_, configuration) =>
            {
                configuration.SetBasePath(AppContext.BaseDirectory);
                configuration.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);
                configuration.AddEnvironmentVariables();
            })
            .ConfigureServices((context, services) =>
            {
                services.AddPiiRedactionServices(context.Configuration);
                services.AddSingleton<ITestPromptCatalog, TestPromptCatalog>();
                services.AddSingleton<IRedactionAppService, RedactionAppService>();
                services.AddSingleton<IScriptAnalysisService, ScriptAnalysisService>();
                services.AddSingleton<IModelStatusService, ModelStatusService>();
                services.AddSingleton<MainViewModel>();
                services.AddSingleton<MainWindow>();
            })
            .Build();

        Directory.SetCurrentDirectory(AppContext.BaseDirectory);

        await _host.StartAsync().ConfigureAwait(true);

        var mainWindow = _host.Services.GetRequiredService<MainWindow>();
        mainWindow.Show();
    }

    protected override async void OnExit(ExitEventArgs e)
    {
        if (_host is not null)
        {
            await _host.StopAsync().ConfigureAwait(true);
            _host.Dispose();
        }

        base.OnExit(e);
    }
}