using FluentAssertions;
using IBKRTrader.Core.Logging;
using IBKRTrader.Core.Persistence;
using IBKRTrader.Core.Persistence.Ef;
using IBKRTrader.Modules.Accounting.Persistence;
using IBKRTrader.Modules.Accounting.Services;
using IBKRTrader.Modules.Accounting.Ui;
using IBKRTrader.Modules.Supervisor.Agent;
using IBKRTrader.Modules.Supervisor.Persistence;
using IBKRTrader.Modules.Supervisor.Services;
using IBKRTrader.Modules.Supervisor.Ui;
using Microsoft.EntityFrameworkCore;

namespace IBKRTrader.Tests;

/// <summary>
/// Konstruiert die neuen Modul-Fenster mit In-Memory-/Stub-Abhängigkeiten – gleichwertig zum
/// Headless-Smoke-UI-Check (`--smoke-ui`), aber ohne die laufende App/DB. Forms bauen im Konstruktor
/// nur Controls (DB-Zugriff erst auf Interaktion), daher genügt Instanziierbarkeit der Services.
/// </summary>
[Trait("cat", "unit")]
public class UiConstructionTests
{
    private sealed class Factory<T>(DbContextOptions<T> options) : IDbContextFactory<T> where T : DbContext
    {
        public T CreateDbContext() => (T)Activator.CreateInstance(typeof(T), options)!;
    }

    private static Factory<T> InMemory<T>() where T : DbContext =>
        new(new DbContextOptionsBuilder<T>().UseInMemoryDatabase(Guid.NewGuid().ToString()).Options);

    private sealed class NoChat : IChatCompletionClient
    {
        public Task<ChatResponse> CompleteAsync(string m, IReadOnlyList<ChatMessage> msgs,
            IReadOnlyList<SupervisorTool> tools, CancellationToken ct) => Task.FromResult(new ChatResponse());
    }

    private static Exception? ConstructOnSta(Action action)
    {
        Exception? captured = null;
        var t = new Thread(() => { try { action(); } catch (Exception ex) { captured = ex; } });
        t.SetApartmentState(ApartmentState.STA);
        t.Start();
        t.Join();
        return captured;
    }

    [Fact]
    public void AccountingMainForm_Constructs()
    {
        var ex = ConstructOnSta(() =>
        {
            var logger = new LoggingService();
            var accDbf = InMemory<AccountingDbContext>();
            var ledger = new EfLedgerRepository(accDbf);
            var runs = new EfIngestRunRepository(accDbf);
            var report = new AccountingReportService(ledger, new EfFxRateRepository(accDbf));
            var ingest = new AccountingIngestService(
                new NullAccountSource(), ledger, runs, new EfRawSnapshotRepository(accDbf),
                new NullStatementSource(), new NullBalanceAnchorSource(), logger);

            using var form = new AccountingMainForm(ledger, runs, report, ingest, logger);
            form.Text.Should().Be("Accounting");
        });
        ex.Should().BeNull();
    }

    [Fact]
    public void SupervisorMainForm_Constructs()
    {
        var ex = ConstructOnSta(() =>
        {
            var logger = new LoggingService();
            var coreDbf = InMemory<CoreDbContext>();
            var supDbf = InMemory<SupervisorDbContext>();
            IDecisionJournal journal = new EfDecisionJournal(coreDbf, logger);
            IOrderEventLog orderLog = new EfOrderEventLog(coreDbf, logger);
            var dossiers = new DossierService(journal, orderLog, new TradeLogReader(coreDbf));
            var agent = new SupervisorAgent(new NoChat(), new SupervisorToolRegistry());
            var reports = new EfSupervisorReportRepository(supDbf, logger);

            using var form = new SupervisorMainForm(agent, dossiers, reports, logger);
            form.Text.Should().Be("Supervisor");
        });
        ex.Should().BeNull();
    }
}