using System.Reflection;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Omika.Core.Compatibility;
using Omika.Core.Contracts.Common;
using Omika.Core.Domain.Commands;
using Omika.Core.Domain.Entities.Organisation;
using Omika.Core.Interfaces;
using Omika.Core.Runtime;
using Omika.Data;
using Omika.Data.Configuration;
using Omika.Data.Connection;
using Omika.Data.Repositories;
using Omika.Data.Repositories.Batik;
using Omika.Data.Repositories.Omika;

namespace Omika.Tests.Repositories;

/// <summary>
/// Tests unitaires de <see cref="AdaptiveCollaborateurRepository"/> : délégation,
/// comportement Unknown, propagation d'erreurs, architecture, et DI.
/// </summary>
[Collection("ApplicationRuntimeContext")]
public class AdaptiveCollaborateurRepositoryTests : IDisposable
{
    public AdaptiveCollaborateurRepositoryTests()
    {
        ApplicationRuntimeContext.Reset();
    }

    public void Dispose()
    {
        ApplicationRuntimeContext.Reset();
    }

    // =========================================================================
    // DELEGATION SEARCH
    // =========================================================================

    [Fact]
    public async Task SearchAsync_BatikDetected_DelegatesToBatikRepository()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);
        ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Batik);

        var batikConnection = new SpyingHfsqlConnection();
        var omikaConnection = new SpyingHfsqlConnection();
        batikConnection.CollaborateurRows = [BatikCollaborateurDict(1, "Dupont", "Jean")];

        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        await adaptive.SearchAsync(new CollaborateurSearchCriteria { Search = "Dupont" });

        Assert.True(batikConnection.QueryCount > 0, "Batik aurait dû exécuter des requêtes.");
        Assert.Equal(0, omikaConnection.QueryCount);
    }

    [Fact]
    public async Task SearchAsync_OmikaDetected_DelegatesToOmikaRepository()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);
        ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Omika);

        var batikConnection = new SpyingHfsqlConnection();
        var omikaConnection = new SpyingHfsqlConnection();
        omikaConnection.CollaborateurRows = [OmikaCollaborateurDict(1, "Dupont", "Jean")];

        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        await adaptive.SearchAsync(new CollaborateurSearchCriteria { Search = "Dupont" });

        Assert.Equal(0, batikConnection.QueryCount);
        Assert.True(omikaConnection.QueryCount > 0, "Omika aurait dû exécuter des requêtes.");
    }

    [Fact]
    public async Task SearchAsync_UnknownDetected_ThrowsInvalidOperationException()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);

        var batikConnection = new SpyingHfsqlConnection();
        var omikaConnection = new SpyingHfsqlConnection();
        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        var ex = await Assert.ThrowsAsync<InvalidOperationException>(
            () => adaptive.SearchAsync(new CollaborateurSearchCriteria()));

        Assert.Contains("not been detected", ex.Message);
        Assert.Equal(0, batikConnection.QueryCount);
        Assert.Equal(0, omikaConnection.QueryCount);
    }

    [Fact]
    public async Task SearchAsync_EmptyCriteria_DoesNotCrash()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);
        ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Batik);

        var batikConnection = new SpyingHfsqlConnection();
        batikConnection.CollaborateurRows = [];
        var omikaConnection = new SpyingHfsqlConnection();
        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        PagedResult<Collaborateur> result = await adaptive.SearchAsync(new CollaborateurSearchCriteria());

        Assert.NotNull(result);
        Assert.Empty(result.Items);
    }

    // =========================================================================
    // DELEGATION DETAIL
    // =========================================================================

    [Fact]
    public async Task GetDetailsAsync_BatikDetected_DelegatesToBatik()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);
        ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Batik);

        var batikConnection = new SpyingHfsqlConnection();
        batikConnection.CollaborateurRows = [BatikCollaborateurDict(42, "Dupont", "Jean")];
        var omikaConnection = new SpyingHfsqlConnection();

        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        Collaborateur? result = await adaptive.GetDetailsAsync("42");

        Assert.NotNull(result);
        Assert.True(batikConnection.QueryCount > 0, "Batik aurait dû exécuter des requêtes.");
        Assert.Equal(0, omikaConnection.QueryCount);
    }

    [Fact]
    public async Task GetDetailsAsync_OmikaDetected_DelegatesToOmika()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);
        ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Omika);

        var batikConnection = new SpyingHfsqlConnection();
        var omikaConnection = new SpyingHfsqlConnection();
        omikaConnection.CollaborateurRows = [OmikaCollaborateurDict(42, "Dupont", "Jean")];

        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        Collaborateur? result = await adaptive.GetDetailsAsync("42");

        Assert.NotNull(result);
        Assert.Equal(0, batikConnection.QueryCount);
        Assert.True(omikaConnection.QueryCount > 0, "Omika aurait dû exécuter des requêtes.");
    }

    [Fact]
    public async Task GetDetailsAsync_UnknownDetected_ThrowsInvalidOperationException()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);

        var batikConnection = new SpyingHfsqlConnection();
        var omikaConnection = new SpyingHfsqlConnection();
        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        var ex = await Assert.ThrowsAsync<InvalidOperationException>(
            () => adaptive.GetDetailsAsync("42"));

        Assert.Contains("not been detected", ex.Message);
        Assert.Equal(0, batikConnection.QueryCount);
        Assert.Equal(0, omikaConnection.QueryCount);
    }

    [Fact]
    public async Task GetDetailsAsync_NullFromRepository_ReturnsNull()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);
        ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Batik);

        var batikConnection = new SpyingHfsqlConnection();
        batikConnection.CollaborateurRows = [];
        var omikaConnection = new SpyingHfsqlConnection();
        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        Collaborateur? result = await adaptive.GetDetailsAsync("999");

        Assert.Null(result);
    }

    // =========================================================================
    // PROPAGATION D'ERREURS
    // =========================================================================

    [Fact]
    public async Task SearchAsync_BatikInfrastructureError_Propagated()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);
        ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Batik);

        var batikConnection = new SpyingHfsqlConnection { ThrowOnQuery = true };
        var omikaConnection = new SpyingHfsqlConnection();
        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        await Assert.ThrowsAsync<InvalidOperationException>(
            () => adaptive.SearchAsync(new CollaborateurSearchCriteria()));
    }

    [Fact]
    public async Task GetDetailsAsync_OmikaInfrastructureError_Propagated()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);
        ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Omika);

        var batikConnection = new SpyingHfsqlConnection();
        var omikaConnection = new SpyingHfsqlConnection { ThrowOnQuery = true };
        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        await Assert.ThrowsAsync<InvalidOperationException>(
            () => adaptive.GetDetailsAsync("42"));
    }

    // =========================================================================
    // DI TESTS
    // =========================================================================

    [Fact]
    public void AddOmikaData_RegistersBatikCollaborateurRepositoryAsScoped()
    {
        var services = new ServiceCollection();
        services.AddOmikaData();

        var descriptor = services.Single(d => d.ServiceType == typeof(BatikCollaborateurRepository));
        Assert.Equal(ServiceLifetime.Scoped, descriptor.Lifetime);
    }

    [Fact]
    public void AddOmikaData_RegistersOmikaCollaborateurRepositoryAsScoped()
    {
        var services = new ServiceCollection();
        services.AddOmikaData();

        var descriptor = services.Single(d => d.ServiceType == typeof(OmikaCollaborateurRepository));
        Assert.Equal(ServiceLifetime.Scoped, descriptor.Lifetime);
    }

    [Fact]
    public void AddOmikaData_RegistersICollaborateurRepositoryAsScoped()
    {
        var services = new ServiceCollection();
        services.AddOmikaData();

        var descriptor = services.Single(d => d.ServiceType == typeof(ICollaborateurRepository));
        Assert.Equal(ServiceLifetime.Scoped, descriptor.Lifetime);
    }

    [Fact]
    public void AddOmikaData_ICollaborateurRepositoryPointsToAdaptiveCollaborateurRepository()
    {
        var services = new ServiceCollection();
        services.AddOmikaData();

        var descriptor = services.Single(d => d.ServiceType == typeof(ICollaborateurRepository));
        Assert.Equal(typeof(AdaptiveCollaborateurRepository), descriptor.ImplementationType);
    }

    [Fact]
    public void AddOmikaData_OnlyOneICollaborateurRepositoryRegistered()
    {
        var services = new ServiceCollection();
        services.AddOmikaData();

        var descriptors = services.Where(d => d.ServiceType == typeof(ICollaborateurRepository)).ToList();
        Assert.Single(descriptors);
    }

    [Fact]
    public async Task AddOmikaData_ResolvesAllCollaborateurRepositories_WithFakeConnection()
    {
        var services = new ServiceCollection();
        services.AddSingleton<IConfiguration>(new ConfigurationBuilder().Build());
        services.AddOmikaData();

        var oldDescriptor = services.Single(d => d.ServiceType == typeof(IHfsqlConnection));
        services.Remove(oldDescriptor);
        services.AddScoped<IHfsqlConnection, MinimalFakeHfsqlConnection>();

        var provider = services.BuildServiceProvider();
        await using var scope = provider.CreateAsyncScope();

        var collaborateurRepo = scope.ServiceProvider.GetRequiredService<ICollaborateurRepository>();
        Assert.IsType<AdaptiveCollaborateurRepository>(collaborateurRepo);

        var batikRepo = scope.ServiceProvider.GetRequiredService<BatikCollaborateurRepository>();
        Assert.NotNull(batikRepo);

        var omikaRepo = scope.ServiceProvider.GetRequiredService<OmikaCollaborateurRepository>();
        Assert.NotNull(omikaRepo);
    }

    // =========================================================================
    // DELEGATION UPDATE
    // =========================================================================

    [Fact]
    public async Task UpdateAsync_BatikDetected_DelegatesToBatik()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);
        ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Batik);

        var batikConnection = new SpyingHfsqlConnection();
        batikConnection.CollaborateurRows = [BatikCollaborateurDict(42, "Dupont", "Jean")];
        var omikaConnection = new SpyingHfsqlConnection();

        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        await adaptive.UpdateAsync("42", new CollaborateurUpdateCommand { Nom = "Updated" },
            CancellationToken.None);

        Assert.True(batikConnection.QueryCount > 0, "Batik aurait dû exécuter des requêtes.");
        Assert.Equal(0, omikaConnection.QueryCount);
    }

    [Fact]
    public async Task UpdateAsync_OmikaDetected_DelegatesToOmika()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);
        ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Omika);

        var batikConnection = new SpyingHfsqlConnection();
        var omikaConnection = new SpyingHfsqlConnection();
        omikaConnection.CollaborateurRows = [OmikaCollaborateurDict(42, "Dupont", "Jean")];

        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        await adaptive.UpdateAsync(Guid.NewGuid().ToString("D"), new CollaborateurUpdateCommand { Nom = "Updated" },
            CancellationToken.None);

        Assert.Equal(0, batikConnection.QueryCount);
        Assert.True(omikaConnection.QueryCount > 0, "Omika aurait dû exécuter des requêtes.");
    }

    [Fact]
    public async Task UpdateAsync_UnknownDetected_ThrowsInvalidOperationException()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);

        var batikConnection = new SpyingHfsqlConnection();
        var omikaConnection = new SpyingHfsqlConnection();
        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        var ex = await Assert.ThrowsAsync<InvalidOperationException>(
            () => adaptive.UpdateAsync("42", new CollaborateurUpdateCommand()));

        Assert.Contains("not been detected", ex.Message);
        Assert.Equal(0, batikConnection.QueryCount);
        Assert.Equal(0, omikaConnection.QueryCount);
    }

    // =========================================================================
    // DELEGATION ARCHIVE
    // =========================================================================

    [Fact]
    public async Task ArchiveAsync_BatikDetected_Existing_ReturnsTrue()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);
        ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Batik);

        var batikConnection = new SpyingHfsqlConnection();
        batikConnection.CollaborateurRows = [BatikCollaborateurDict(42, "Dupont", "Jean")];
        var omikaConnection = new SpyingHfsqlConnection();

        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        bool result = await adaptive.ArchiveAsync("42");

        Assert.True(result);
        Assert.True(batikConnection.QueryCount > 0, "Batik aurait dû exécuter des requêtes.");
        Assert.Equal(0, omikaConnection.QueryCount);
    }

    [Fact]
    public async Task ArchiveAsync_OmikaDetected_Existing_ReturnsTrue()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);
        ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Omika);

        var batikConnection = new SpyingHfsqlConnection();
        var omikaConnection = new SpyingHfsqlConnection();
        omikaConnection.CollaborateurRows = [OmikaCollaborateurDict(42, "Dupont", "Jean")];

        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        bool result = await adaptive.ArchiveAsync(Guid.NewGuid().ToString("D"));

        Assert.True(result);
        Assert.Equal(0, batikConnection.QueryCount);
        Assert.True(omikaConnection.QueryCount > 0, "Omika aurait dû exécuter des requêtes.");
    }

    [Fact]
    public async Task ArchiveAsync_UnknownDetected_ThrowsInvalidOperationException()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);

        var batikConnection = new SpyingHfsqlConnection();
        var omikaConnection = new SpyingHfsqlConnection();
        var batikRepo = new BatikCollaborateurRepository(batikConnection);
        var omikaRepo = new OmikaCollaborateurRepository(omikaConnection);
        var adaptive = new AdaptiveCollaborateurRepository(batikRepo, omikaRepo);

        var ex = await Assert.ThrowsAsync<InvalidOperationException>(
            () => adaptive.ArchiveAsync("42"));

        Assert.Contains("not been detected", ex.Message);
        Assert.Equal(0, batikConnection.QueryCount);
        Assert.Equal(0, omikaConnection.QueryCount);
    }

    // =========================================================================
    // RÉGRESSION : GUID Collaborateur TRONQUÉ (32 caractères, WinDev)
    // =========================================================================

    [Fact]
    public async Task GetUtilisateurByCollaborateurAsync_Omika_GuidTronque_InterrogeToutesLesFormes()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);
        ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Omika);

        var connection = new SpyingHfsqlConnection();
        // GUID physique stocké TRONQUÉ à 32 caractères (WinDev a omis les 4
        // derniers hexadécimaux), comme observé en base réelle.
        connection.CollaborateurRows =
        [
            new Dictionary<string, object?>
            {
                ["CO_PKID"] = 281474976710675L,
                ["GUID"] = "62224eca-4565-4f47-9197-5c743940"
            }
        ];

        var repo = new OmikaCollaborateurRepository(connection);

        // Identifiant canonique (forme « D » complétée par PhysicalGuidParser : + "0000").
        await repo.GetUtilisateurByCollaborateurAsync("62224eca-4565-4f47-9197-5c7439400000");

        // La résolution doit tester TOUTES les formes de stockage (D, N, tronquée),
        // pas seulement la forme « D » (sinon le GUID tronqué ne matcherait jamais).
        string sqlCollaborateur = connection.AllSql.First(
            sql => sql.Contains("FROM Collaborateur", StringComparison.OrdinalIgnoreCase));
        Assert.Contains("GUID IN (", sqlCollaborateur);
        Assert.Contains("?, ?, ?", sqlCollaborateur);
    }

    [Fact]
    public async Task GetDetailsAsync_Omika_GuidTronque_InterrogeToutesLesFormes()
    {
        ApplicationRuntimeContext.Configure(DatabaseSchemaSelection.Auto);
        ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Omika);

        var connection = new SpyingHfsqlConnection();
        // GUID physique stocké TRONQUÉ à 32 caractères (WinDev a omis les 4
        // derniers hexadécimaux), comme observé en base réelle.
        connection.CollaborateurRows =
        [
            new Dictionary<string, object?>
            {
                ["CO_PKID"] = 281474976710675L,
                ["GUID"] = "62224eca-4565-4f47-9197-5c743940",
                ["CO_Nom"] = "Dupont",
                ["CO_Prenom"] = "Jean"
            }
        ];

        var repo = new OmikaCollaborateurRepository(connection);

        // Identifiant canonique (forme « D » complétée par PhysicalGuidParser : + "0000").
        await repo.GetDetailsAsync("62224eca-4565-4f47-9197-5c7439400000");

        // La lecture par identifiant doit tester TOUTES les formes de stockage
        // (D, N, tronquée) : un GUID = ? en forme « D » ne matcherait jamais un
        // GUID physique tronqué → « Collaborateur introuvable ».
        string sqlCollaborateur = connection.AllSql.First(
            sql => sql.Contains("FROM Collaborateur", StringComparison.OrdinalIgnoreCase));
        Assert.Contains("GUID IN (", sqlCollaborateur);
        Assert.Contains("?, ?, ?", sqlCollaborateur);
    }

    // =========================================================================
    // ARCHITECTURE
    // =========================================================================

    [Fact]
    public void Repository_ImplementsICollaborateurRepository()
    {
        Assert.True(typeof(ICollaborateurRepository).IsAssignableFrom(typeof(AdaptiveCollaborateurRepository)));
    }

    [Fact]
    public void Repository_ContainsNoSql()
    {
        string source = ReadSourceFile(typeof(AdaptiveCollaborateurRepository));

        Assert.DoesNotContain("SELECT ", source, StringComparison.OrdinalIgnoreCase);
        Assert.DoesNotContain("FROM ", source, StringComparison.OrdinalIgnoreCase);
        Assert.DoesNotContain("WHERE ", source, StringComparison.OrdinalIgnoreCase);
    }

    [Fact]
    public void Repository_ContainsNoOdbcTypes()
    {
        var type = typeof(AdaptiveCollaborateurRepository);
        var referenced = GetPublicSurfaceTypes(type);

        Assert.DoesNotContain(referenced, t =>
            t.Namespace is not null && t.Namespace.StartsWith("System.Data.Odbc", StringComparison.Ordinal));
    }

    [Fact]
    public void Repository_ContainsNoHfsqlRowReferences()
    {
        var type = typeof(AdaptiveCollaborateurRepository);
        var referenced = GetPublicSurfaceTypes(type);

        Assert.DoesNotContain(referenced, t =>
            t.Name.Contains("Row", StringComparison.OrdinalIgnoreCase)
            && t.Namespace is not null
            && t.Namespace.Contains("HfSql", StringComparison.OrdinalIgnoreCase));
    }

    [Fact]
    public void Repository_DoesNotDependOnHfsqlConnection()
    {
        var type = typeof(AdaptiveCollaborateurRepository);

        bool hasHfsqlConnectionCtor = type.GetConstructors()
            .Any(c => c.GetParameters()
                .Any(p => typeof(IHfsqlConnection).IsAssignableFrom(p.ParameterType)));

        Assert.False(hasHfsqlConnectionCtor,
            "AdaptiveCollaborateurRepository ne doit pas dépendre directement de IHfsqlConnection.");
    }

    // =========================================================================
    // HELPERS
    // =========================================================================

    private static IEnumerable<Type> GetPublicSurfaceTypes(Type type)
    {
        var members = type.GetMembers(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static)
            .Select(m => m.DeclaringType)
            .Where(t => t is not null)
            .Cast<Type>();

        var parameters = type.GetMethods(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)
            .SelectMany(m => m.GetParameters())
            .Select(p => p.ParameterType);

        var returnTypes = type.GetMethods(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)
            .Select(m => m.ReturnType);

        var properties = type.GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)
            .Select(p => p.PropertyType);

        var ctorParams = type.GetConstructors()
            .SelectMany(c => c.GetParameters())
            .Select(p => p.ParameterType);

        return members.Concat(parameters).Concat(returnTypes).Concat(properties).Concat(ctorParams);
    }

    private static string ReadSourceFile(Type type)
    {
        string baseDir = AppDomain.CurrentDomain.BaseDirectory;
        var dir = new DirectoryInfo(baseDir);
        while (dir != null && !File.Exists(Path.Combine(dir.FullName, "Omika.slnx")))
            dir = dir.Parent;

        string root = dir?.FullName ?? baseDir;
        return File.ReadAllText(Path.Combine(root, "src", "Omika.Data", "Repositories", type.Name + ".cs"));
    }

    // --- Dictionnaires de lignes physiques ----------------------------------

    private static Dictionary<string, object?> BatikCollaborateurDict(
        long pkid, string? nom, string? prenom)
        => new()
        {
            ["CL_PKID"] = pkid,
            ["CL_Nom"] = nom,
            ["CL_Prenom"] = prenom,
            ["CL_Code"] = "JD",
            ["CL_EMail"] = "jean@example.com",
            ["CL_Telephone"] = "0102030405",
            ["CL_IDCivilite"] = 0L,
            ["CL_IDStatut"] = 0L,
            ["CL_IDFonction"] = 0L,
            ["CL_IDSociete"] = 0L,
            ["CL_CouleurPlanning"] = "#FF0000",
            ["CL_Actif"] = true,
            ["Archive"] = false
        };

    private static Dictionary<string, object?> OmikaCollaborateurDict(
        long pkid, string? nom, string? prenom)
        => new()
        {
            ["CL_PKID"] = pkid,
            ["CL_Nom"] = nom,
            ["CL_Prenom"] = prenom,
            ["CL_Code"] = "JD",
            ["CL_EMail"] = "jean@example.com",
            ["CL_Telephone"] = "0102030405",
            ["CL_CleCivilite"] = null,
            ["CL_CleStatut"] = null,
            ["CL_CleFonction"] = null,
            ["CL_IdSociete"] = 0L,
            ["CL_CouleurPlanning"] = "#FF0000",
            ["CL_Actif"] = true,
            ["GUID"] = null,
            ["Archive"] = false
        };

    // =========================================================================
    // SpyingHfsqlConnection
    // =========================================================================

    private sealed class SpyingHfsqlConnection : IHfsqlConnection
    {
        public HfsqlOptions Options => new();
        public HfsqlConnectionState State { get; private set; } = HfsqlConnectionState.Closed;

        public int QueryCount { get; private set; }
        public bool ThrowOnQuery { get; set; }
        public string? LastSql { get; private set; }
        public IReadOnlyList<object?>? LastParameters { get; private set; }
        public CancellationToken LastCancellationToken { get; private set; }
        public IReadOnlyList<string> AllSql => _allSql;
        private readonly List<string> _allSql = [];

        public IReadOnlyList<IReadOnlyDictionary<string, object?>> CollaborateurRows { get; set; } = [];

        private void Record(string sql, IReadOnlyList<object?>? parameters, CancellationToken cancellationToken)
        {
            LastSql = sql;
            LastParameters = parameters;
            LastCancellationToken = cancellationToken;
            QueryCount++;
            _allSql.Add(sql);
        }

        public Task OpenAsync(CancellationToken cancellationToken = default)
        {
            State = HfsqlConnectionState.Open;
            return Task.CompletedTask;
        }

        public Task CloseAsync()
        {
            State = HfsqlConnectionState.Closed;
            return Task.CompletedTask;
        }

        public Task<object?> ExecuteScalarAsync(string sql, IReadOnlyList<object?>? parameters = null, CancellationToken cancellationToken = default)
        {
            Record(sql, parameters, cancellationToken);
            return Task.FromResult<object?>(null);
        }

        public Task<int> ExecuteNonQueryAsync(string sql, IReadOnlyList<object?>? parameters = null, CancellationToken cancellationToken = default)
        {
            Record(sql, parameters, cancellationToken);
            return Task.FromResult(0);
        }

        public Task<IReadOnlyList<IReadOnlyDictionary<string, object?>>> QueryAsync(
            string sql, IReadOnlyList<object?>? parameters = null, CancellationToken cancellationToken = default)
        {
            Record(sql, parameters, cancellationToken);

            if (ThrowOnQuery)
                throw new InvalidOperationException("Panne d'infrastructure simulée.");

            return Task.FromResult(ResolveRows(sql));
        }

        public Task<IReadOnlyList<HfsqlColumnMetadata>> GetColumnsAsync(
            string tableName, CancellationToken cancellationToken = default)
        {
            return Task.FromResult<IReadOnlyList<HfsqlColumnMetadata>>([]);
        }

        public ValueTask DisposeAsync()
        {
            State = HfsqlConnectionState.Closed;
            return ValueTask.CompletedTask;
        }

        private IReadOnlyList<IReadOnlyDictionary<string, object?>> ResolveRows(string sql)
        {
            if (ContainsFrom(sql, "Collaborateur") || ContainsFrom(sql, "Collaborateurs"))
                return CollaborateurRows;
            return [];
        }

        private static bool ContainsFrom(string sql, string table)
        {
            string marker = $"FROM {table}";
            int index = sql.IndexOf(marker, StringComparison.OrdinalIgnoreCase);
            while (index >= 0)
            {
                int next = index + marker.Length;
                if (next >= sql.Length || (!char.IsLetterOrDigit(sql[next]) && sql[next] != '_'))
                {
                    return true;
                }

                index = sql.IndexOf(marker, index + 1, StringComparison.OrdinalIgnoreCase);
            }

            return false;
        }
    }

    // =========================================================================
    // MinimalFakeHfsqlConnection (DI)
    // =========================================================================

    private sealed class MinimalFakeHfsqlConnection : IHfsqlConnection
    {
        public HfsqlOptions Options => new();
        public HfsqlConnectionState State { get; private set; } = HfsqlConnectionState.Closed;

        public Task OpenAsync(CancellationToken cancellationToken = default)
        {
            State = HfsqlConnectionState.Open;
            return Task.CompletedTask;
        }

        public Task CloseAsync()
        {
            State = HfsqlConnectionState.Closed;
            return Task.CompletedTask;
        }

        public Task<object?> ExecuteScalarAsync(string sql, IReadOnlyList<object?>? parameters = null, CancellationToken cancellationToken = default)
            => Task.FromResult<object?>(null);

        public Task<int> ExecuteNonQueryAsync(string sql, IReadOnlyList<object?>? parameters = null, CancellationToken cancellationToken = default)
            => Task.FromResult(0);

        public Task<IReadOnlyList<IReadOnlyDictionary<string, object?>>> QueryAsync(
            string sql, IReadOnlyList<object?>? parameters = null, CancellationToken cancellationToken = default)
            => Task.FromResult<IReadOnlyList<IReadOnlyDictionary<string, object?>>>([]);

        public Task<IReadOnlyList<HfsqlColumnMetadata>> GetColumnsAsync(
            string tableName, CancellationToken cancellationToken = default)
            => Task.FromResult<IReadOnlyList<HfsqlColumnMetadata>>([]);

        public ValueTask DisposeAsync()
        {
            State = HfsqlConnectionState.Closed;
            return ValueTask.CompletedTask;
        }
    }
}