using System.Windows;
using ClaudeDo.Installer.Core;
using ClaudeDo.Installer.Pages.InstallPage;
using ClaudeDo.Installer.Pages.PathsPage;
using ClaudeDo.Installer.Pages.ServicePage;
using ClaudeDo.Installer.Pages.UiSettingsPage;
using ClaudeDo.Installer.Pages.WelcomePage;
using ClaudeDo.Installer.Steps;
using ClaudeDo.Installer.Views;
using Microsoft.Extensions.DependencyInjection;

namespace ClaudeDo.Installer;

public partial class App : Application
{
    private ServiceProvider? _services;

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

        _services = BuildServices();

        // TODO(Task 11): replace with async InstallModeDetector
        Window mainWindow = new WizardWindow
        {
            DataContext = _services.GetRequiredService<WizardViewModel>()
        };

        DarkTitleBar.Apply(mainWindow);
        mainWindow.Show();
    }

    protected override void OnExit(ExitEventArgs e)
    {
        _services?.Dispose();
        base.OnExit(e);
    }

    private static ServiceProvider BuildServices()
    {
        var sc = new ServiceCollection();

        // Core
        sc.AddSingleton<InstallContext>();
        sc.AddSingleton<PageResolver>();
        sc.AddSingleton<InstallerService>();

        // Pages
        sc.AddSingleton<IInstallerPage, WelcomePageViewModel>();
        sc.AddSingleton<IInstallerPage, PathsPageViewModel>();
        sc.AddSingleton<IInstallerPage, ServicePageViewModel>();
        sc.AddSingleton<IInstallerPage, UiSettingsPageViewModel>();
        sc.AddSingleton<IInstallerPage, InstallPageViewModel>();

        // Steps (registration order = execution order)
        sc.AddSingleton<IInstallStep, PublishAppStep>();
        sc.AddSingleton<IInstallStep, PublishWorkerStep>();
        sc.AddSingleton<IInstallStep, DeployBinariesStep>();
        sc.AddSingleton<IInstallStep, WriteConfigStep>();
        sc.AddSingleton<IInstallStep, InitDatabaseStep>();
        sc.AddSingleton<IInstallStep, RegisterServiceStep>();
        sc.AddSingleton<IInstallStep, CreateShortcutsStep>();

        // ViewModels
        sc.AddSingleton<WizardViewModel>();
        sc.AddSingleton<SettingsViewModel>();

        return sc.BuildServiceProvider();
    }
}