using FluentAssertions;
using IBKRTrader.Core.Modularity;
using IBKRTrader.Core.Workers;
using IBKRTrader.Modules.CongressTrading;
using IBKRTrader.Modules.CongressTrading.Database;
using IBKRTrader.Modules.CongressTrading.Scraper;
using IBKRTrader.Modules.CongressTrading.Workers;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using NSubstitute;

namespace IBKRTrader.Tests.Modules;

[Trait("cat", "unit")]
public class CongressTradingModuleTests
{
    private sealed class CapturingUiHost : IModuleUiHost
    {
        private readonly List<ModuleView> _views = new();
        public IReadOnlyList<ModuleView> Views => _views;
        public void RegisterView(ModuleView view) => _views.Add(view);
        public bool IsOpen(string viewId) => false;
        public void OpenView(string viewId) { }
        public void ActivateMain() { }
        public void RequestShutdown() { }
        public event Action? OpenStateChanged { add { } remove { } }
    }

    [Fact]
    public void Metadata_IsAsExpected()
    {
        var module = new CongressTradingModule();

        module.Name.Should().Be("CongressTrading");
        module.DbPrefix.Should().Be("ct_");
    }

    [Fact]
    public void RegisterServices_RegistersServicesAndWorkers()
    {
        var services = new ServiceCollection();

        new CongressTradingModule().RegisterServices(services, Substitute.For<IConfiguration>());

        var types = services.Select(d => d.ServiceType).ToList();
        types.Should().Contain(new[]
        {
            typeof(CongressRepository),
            typeof(CapitolTradesScraper),
            typeof(CongressHistoryImportWorker),
            typeof(CongressScrapeWorker),
        });
        // Worker werden zusätzlich als IWorker registriert (für die WorkerEngine).
        services.Count(d => d.ServiceType == typeof(IWorker)).Should().Be(2);
    }

    [Fact]
    public void RegisterUi_RegistriertNichts_DamitDasModulPlattformneutralBleibt()
    {
        // Absicht, kein Versehen: würde das Modul sein Fenster selbst erzeugen, müsste es das
        // UI-Toolkit referenzieren – und wäre damit nicht mehr kopflos auf Linux lauffähig.
        // Das Fenster registriert die Shell zentral (App: UI/ModuleViews.cs).
        var host = new CapturingUiHost();
        var provider = new ServiceCollection().BuildServiceProvider();

        new CongressTradingModule().RegisterUi(host, provider);

        host.Views.Should().BeEmpty();
    }

    [Fact]
    public void GetActivationBlocker_DefaultsToNull()
    {
        // Default-Interface-Methode → über die Interface-Referenz aufrufen.
        IModule module = new CongressTradingModule();
        module.GetActivationBlocker(Substitute.For<IConfiguration>()).Should().BeNull();
    }
}