using System.Net;
using System.Net.Http.Json;
using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.DependencyInjection.Extensions;
using Omika.Core.Abstractions;
using Omika.Core.Compatibility;
using Omika.Core.Contracts.Mobile.Bootstrap;
using Omika.Core.Contracts.Security;
using Omika.Core.Interfaces.Mobile;
using Omika.Core.Runtime;
using Omika.Data.Configuration;
using Omika.Data.Connection;
using Omika.Data.Runtime;


namespace Omika.Tests.Api;

/// <summary>
/// Tests HTTP des endpoints de bootstrap mobile.
/// Vérifie l'authentification (sans token, token invalide) et le contrat retourné.
/// </summary>
[Collection("ApplicationRuntimeContext")]
public class MobileBootstrapEndpointsTests : IDisposable
{
    private const string SigningKey = "test-signing-key-for-integration-tests-only";
    private readonly FakeBootstrapService _fakeService = new();
    private readonly WebApplicationFactory<Program> _factory;

    public MobileBootstrapEndpointsTests()
    {
        ApplicationRuntimeContext.Reset();

        _factory = new WebApplicationFactory<Program>()
            .WithWebHostBuilder(builder =>
            {
                builder.ConfigureServices(services =>
                {
                    var config = new ConfigurationBuilder()
                        .AddInMemoryCollection(new Dictionary<string, string?>
                        {
                            ["Hfsql:Server"] = "test-server",
                            ["Hfsql:DatabaseName"] = "test-db",
                            ["MobileAuth:SigningKey"] = SigningKey
                        })
                        .Build();
                    services.AddSingleton<IConfiguration>(config);

                    services.RemoveAll<IDatabaseRuntimeInitializer>();
                    services.AddScoped<IDatabaseRuntimeInitializer, FakeRuntimeInitializer>();

                    services.RemoveAll<IHfsqlConnection>();
                    services.AddScoped<IHfsqlConnection, FakeHfsqlConnection>();

                    services.RemoveAll<IMobileBootstrapService>();
                    services.AddScoped<IMobileBootstrapService>(_ => _fakeService);
                });
            });
    }

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

    [Fact]
    public async Task Bootstrap_WithoutToken_Returns401()
    {
        var client = _factory.CreateClient();

        var response = await client.GetAsync("/api/mobile/bootstrap");

        Assert.Equal(401, (int)response.StatusCode);
    }

    [Fact]
    public async Task Bootstrap_InvalidToken_Returns401()
    {
        var client = _factory.CreateClient();
        client.DefaultRequestHeaders.Authorization =
            new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", "invalid.token.value");

        var response = await client.GetAsync("/api/mobile/bootstrap");

        Assert.Equal(401, (int)response.StatusCode);
    }

    [Fact]
    public async Task Bootstrap_DeviceMismatch_Returns403_Not500()
    {
        _fakeService.ThrowDeviceMismatch = true;
        var client = _factory.CreateClient();
        client.DefaultRequestHeaders.Authorization =
            new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", CreateValidToken());

        var response = await client.GetAsync("/api/mobile/bootstrap");

        Assert.Equal(403, (int)response.StatusCode);
    }

    [Fact]
    public async Task Bootstrap_ValidToken_Returns200WithContract()
    {
        _fakeService.Result = new MobileBootstrapResponse
        {
            Utilisateur = new CurrentUserDto { Id = "user-1", Login = "user-1" },
            Profil = new MobileProfileDto { Code = "BATIK", Nom = "BATIK" }
        };
        var client = _factory.CreateClient();
        client.DefaultRequestHeaders.Authorization =
            new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", CreateValidToken());

        var response = await client.GetAsync("/api/mobile/bootstrap");

        Assert.Equal(200, (int)response.StatusCode);
        var body = await response.Content.ReadFromJsonAsync<MobileBootstrapResponse>();
        Assert.NotNull(body);
        Assert.Equal("user-1", body.Utilisateur.Id);
        Assert.Equal("BATIK", body.Profil.Code);
    }

    private string CreateValidToken()
    {
        using var scope = _factory.Services.CreateScope();
        var tokenService = scope.ServiceProvider.GetRequiredService<ITokenService>();
        return tokenService.GenerateToken(new MobileTokenIdentity
        {
            CodeClient = "BATIK.01",
            DeviceId = "device-abc-123",
            UserId = "user-1",
            CollaborateurId = "7",
            NumeroLicence = "1ab053eb5e274e1f92455bbb7de9f2d3"
        });
    }

    // ===== Fakes =====

    private sealed class FakeBootstrapService : IMobileBootstrapService
    {
        public MobileBootstrapResponse Result { get; set; } = new();
        public bool ThrowDeviceMismatch { get; set; }

        public Task<MobileBootstrapResponse> GetBootstrapAsync(
            MobileTokenIdentity identity,
            CancellationToken cancellationToken = default)
        {
            if (ThrowDeviceMismatch)
            {
                throw new UnauthorizedAccessException(
                    "Le DeviceId authentifié ne correspond pas à la licence attribuée.");
            }

            return Task.FromResult(Result);
        }
    }

    private sealed class FakeRuntimeInitializer : IDatabaseRuntimeInitializer
    {
        public Task<Result> InitializeAsync(CancellationToken cancellationToken = default)
        {
            ApplicationRuntimeContext.SetDetectedVersion(DatabaseSchemaVersion.Batik);
            return Task.FromResult(Result.Success());
        }
    }

    private sealed class FakeHfsqlConnection : IHfsqlConnection, IDisposable
    {
        public HfsqlOptions Options => new();
        public HfsqlConnectionState State => HfsqlConnectionState.Closed;
        public void Dispose() { }
        public Task OpenAsync(CancellationToken ct = default) => Task.CompletedTask;
        public Task CloseAsync() => Task.CompletedTask;
        public Task<object?> ExecuteScalarAsync(string sql, IReadOnlyList<object?>? parameters = null, CancellationToken ct = default)
            => Task.FromResult<object?>(null);
        public Task<int> ExecuteNonQueryAsync(string sql, IReadOnlyList<object?>? parameters = null, CancellationToken ct = default)
            => Task.FromResult(0);
        public Task<IReadOnlyList<IReadOnlyDictionary<string, object?>>> QueryAsync(string sql, IReadOnlyList<object?>? parameters = null, CancellationToken ct = default)
            => Task.FromResult<IReadOnlyList<IReadOnlyDictionary<string, object?>>>([]);
        public Task<IReadOnlyList<HfsqlColumnMetadata>> GetColumnsAsync(string tableName, CancellationToken ct = default)
            => Task.FromResult<IReadOnlyList<HfsqlColumnMetadata>>([]);
        public ValueTask DisposeAsync() => ValueTask.CompletedTask;
    }
}