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.Api.Services;
using Omika.Core.Abstractions;
using Omika.Core.Compatibility;
using Omika.Core.Constants;
using Omika.Core.Contracts.Mobile.License;
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 administratifs de licence mobile
/// (GET/POST /collaborateurs/{id}/licence-mobile[/assign|/release]).
/// Vérifie l'authentification (Bearer) et l'autorisation (droit A.LIC.MOB),
/// ainsi que le contrat de réponse pour l'attribution, la consultation et la
/// libération.
/// </summary>
[Collection("ApplicationRuntimeContext")]
public class CollaborateurLicenceEndpointsTests : IDisposable
{
    private const string SigningKey = "test-signing-key-for-integration-tests-only";
    private const string CollaborateurId = "7";

    private readonly FakeLicenseService _licenseService = new();
    private readonly FakePermissionService _permissionService = new();
    private readonly WebApplicationFactory<Program> _factory;

    public CollaborateurLicenceEndpointsTests()
    {
        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<ILicenseService>();
                    services.AddScoped<ILicenseService>(_ => _licenseService);

                    services.RemoveAll<IMobilePermissionService>();
                    services.AddScoped<IMobilePermissionService>(_ => _permissionService);
                });
            });
    }

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

    // ===== Consultation (GET) =====

    [Fact]
    public async Task Get_SansToken_Retourne401()
    {
        var client = _factory.CreateClient();

        var response = await client.GetAsync($"/collaborateurs/{CollaborateurId}/licence-mobile");

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

    [Fact]
    public async Task Get_DroitLicenceMobileAbsent_Retourne401()
    {
        _permissionService.Permissions[MobilePermissionKeys.LicenceMobile] = false;
        var client = _factory.CreateClient();
        client.DefaultRequestHeaders.Authorization =
            new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", CreateValidToken());

        var response = await client.GetAsync($"/collaborateurs/{CollaborateurId}/licence-mobile");

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

    [Fact]
    public async Task Get_DroitLicenceMobilePresent_Retourne200AvecDto()
    {
        _permissionService.Permissions[MobilePermissionKeys.LicenceMobile] = true;
        _licenseService.GetResult = new CollaborateurLicenceDto
        {
            Numero = "LIC-001",
            CodeClient = "BATIK.01",
            Active = true,
            QrCode = "omika-enroll-v1:cGF5bG9hZA.sig"
        };
        var client = _factory.CreateClient();
        client.DefaultRequestHeaders.Authorization =
            new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", CreateValidToken());

        var response = await client.GetAsync($"/collaborateurs/{CollaborateurId}/licence-mobile");

        Assert.Equal(200, (int)response.StatusCode);
        var body = await response.Content.ReadFromJsonAsync<CollaborateurLicenceDto>();
        Assert.NotNull(body);
        Assert.Equal("LIC-001", body.Numero);
        Assert.Equal("BATIK.01", _licenseService.LastCodeClient);
    }

    // ===== Attribution (POST assign) =====

    [Fact]
    public async Task Assign_DroitLicenceMobileAbsent_Retourne401()
    {
        _permissionService.Permissions[MobilePermissionKeys.LicenceMobile] = false;
        var client = _factory.CreateClient();
        client.DefaultRequestHeaders.Authorization =
            new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", CreateValidToken());

        var response = await client.PostAsync(
            $"/collaborateurs/{CollaborateurId}/licence-mobile/assign", content: null);

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

    [Fact]
    public async Task Assign_DroitLicenceMobilePresent_Retourne200AvecDto()
    {
        _permissionService.Permissions[MobilePermissionKeys.LicenceMobile] = true;
        _licenseService.AssignResult = new CollaborateurLicenceDto
        {
            Numero = "LIC-002",
            CodeClient = "BATIK.01",
            Active = true,
            QrCode = "omika-enroll-v1:cGF5bG9hZA.sig"
        };
        var client = _factory.CreateClient();
        client.DefaultRequestHeaders.Authorization =
            new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", CreateValidToken());

        var response = await client.PostAsync(
            $"/collaborateurs/{CollaborateurId}/licence-mobile/assign", content: null);

        Assert.Equal(200, (int)response.StatusCode);
        var body = await response.Content.ReadFromJsonAsync<CollaborateurLicenceDto>();
        Assert.NotNull(body);
        Assert.Equal("LIC-002", body.Numero);
        Assert.Equal("BATIK.01", _licenseService.LastCodeClient);
    }

    // ===== Libération (POST release) =====

    [Fact]
    public async Task Release_DroitLicenceMobilePresent_Retourne204()
    {
        _permissionService.Permissions[MobilePermissionKeys.LicenceMobile] = true;
        _licenseService.ReleaseResult = true;
        var client = _factory.CreateClient();
        client.DefaultRequestHeaders.Authorization =
            new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", CreateValidToken());

        var response = await client.PostAsync(
            $"/collaborateurs/{CollaborateurId}/licence-mobile/release", content: null);

        Assert.Equal(204, (int)response.StatusCode);
    }

    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 = CollaborateurId,
            NumeroLicence = "1ab053eb5e274e1f92455bbb7de9f2d3"
        });
    }

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

    private sealed class FakeLicenseService : ILicenseService
    {
        public CollaborateurLicenceDto? GetResult { get; set; }
        public CollaborateurLicenceDto? AssignResult { get; set; }
        public bool ReleaseResult { get; set; } = true;
        public string? LastCodeClient { get; private set; }

        public Task<LicenseResponse> ActivateAsync(
            LicenseActivateRequest request,
            CancellationToken cancellationToken = default)
            => Task.FromResult(new LicenseResponse());

        public Task<LicenseResponse> ValidateAsync(
            LicenseValidateRequest request,
            CancellationToken cancellationToken = default)
            => Task.FromResult(new LicenseResponse());

        public Task<CollaborateurLicenceDto?> GetMobileLicenceForCollaborateurAsync(
            string collaborateurId,
            string codeClient,
            CancellationToken cancellationToken = default)
        {
            LastCodeClient = codeClient;
            return Task.FromResult(GetResult);
        }

        public Task<CollaborateurLicenceDto?> AssignMobileLicenceAsync(
            string collaborateurId,
            string codeClient,
            CancellationToken cancellationToken = default)
        {
            LastCodeClient = codeClient;
            return Task.FromResult(AssignResult);
        }

        public Task<bool> ReleaseMobileLicenceAsync(
            string collaborateurId,
            CancellationToken cancellationToken = default)
            => Task.FromResult(ReleaseResult);
    }

    private sealed class FakePermissionService : IMobilePermissionService
    {
        public Dictionary<string, bool> Permissions { get; } = new();

        public MobileTokenIdentity? Identity => null;

        public Task<IReadOnlyDictionary<string, bool>> GetPermissionsAsync(CancellationToken cancellationToken = default)
            => Task.FromResult<IReadOnlyDictionary<string, bool>>(Permissions);

        public Task<bool> HasPermissionAsync(string key, CancellationToken cancellationToken = default)
            => Task.FromResult(Permissions.TryGetValue(key, out bool allowed) && allowed);
    }

    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;
    }
}