using System.Reflection;
using System.Text.Json;
using Api.SeaHavenIndustries.Controllers;
using Api.SeaHavenIndustries.Filters;
using Microsoft.AspNetCore.Mvc.Abstractions;
using Microsoft.AspNetCore.Mvc.Filters;
using Microsoft.AspNetCore.Routing;
using Microsoft.Extensions.Logging.Abstractions;
using FluentAssertions;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Moq;
using SeaHaven.Services.DTOs;
using SeaHaven.Services.Interfaces;
using System.Security.Claims;
using Xunit;

namespace Api.SeaHavenIndustries.Tests;

public class TeamMemberInviteControllerTests
{
    [Fact]
    public void RegistrationRequests_CarryNoUserIdentifier()
    {
        var requestTypes = new[]
        {
            typeof(TeamMemberInviteTokenRequestDTO),
            typeof(VerifyTeamMemberInviteCodeRequestDTO),
            typeof(CompleteTeamMemberRegistrationRequestDTO)
        };

        var properties = requestTypes
            .SelectMany(type => type.GetProperties(BindingFlags.Public | BindingFlags.Instance))
            .Select(property => property.Name)
            .Distinct()
            .OrderBy(name => name);

        properties.Should().Equal("Code", "Password", "Phone", "Token");
    }

    [Fact]
    public void RegistrationEndpoints_AreAnonymousAndNeverCached()
    {
        var type = typeof(TeamMemberInviteController);

        type.GetCustomAttribute<AllowAnonymousAttribute>().Should().NotBeNull();
        var cache = type.GetCustomAttribute<ResponseCacheAttribute>();
        cache.Should().NotBeNull();
        cache!.NoStore.Should().BeTrue();
    }

    [Fact]
    public void RegistrationEndpoints_UseTheControllerScopedExceptionFilter()
    {
        var filter = typeof(TeamMemberInviteController).GetCustomAttribute<TypeFilterAttribute>();

        filter.Should().NotBeNull();
        filter!.ImplementationType.Should().Be(typeof(InviteRegistrationExceptionFilter));
    }

    [Fact]
    public void ExceptionFilter_ReturnsAFixedBodyWithoutExceptionDetail()
    {
        var context = ExceptionContextFor(new ArgumentException(
            "SELECT [Id] FROM [TeamMemberInvites] WHERE [TokenHash] = 'leak-me'"));

        new InviteRegistrationExceptionFilter(NullLogger<InviteRegistrationExceptionFilter>.Instance)
            .OnException(context);

        context.ExceptionHandled.Should().BeTrue();
        var result = context.Result.Should().BeOfType<ObjectResult>().Subject;
        result.StatusCode.Should().Be(StatusCodes.Status500InternalServerError);
        var body = JsonSerializer.Serialize(result.Value);
        body.Should().Be(
            "{\"code\":\"server_error\",\"message\":\"Something went wrong. Try again in a minute.\",\"retryAfterSeconds\":null}");
        body.Should().NotContain("SELECT").And.NotContain("leak-me");
    }

    [Fact]
    public void ExceptionFilter_LeavesCancellationToTheHost()
    {
        var context = ExceptionContextFor(new OperationCanceledException());

        new InviteRegistrationExceptionFilter(NullLogger<InviteRegistrationExceptionFilter>.Instance)
            .OnException(context);

        context.ExceptionHandled.Should().BeFalse();
        context.Result.Should().BeNull();
    }

    private static ExceptionContext ExceptionContextFor(Exception exception)
    {
        var actionContext = new ActionContext(new DefaultHttpContext(), new RouteData(), new ActionDescriptor());
        return new ExceptionContext(actionContext, new List<IFilterMetadata>()) { Exception = exception };
    }

    [Theory]
    [InlineData(TeamMemberRegistrationStatus.InvalidInvite)]
    [InlineData(TeamMemberRegistrationStatus.Ok)]
    public async Task Complete_WithoutASession_ReturnsTheGenericInviteError(TeamMemberRegistrationStatus status)
    {
        var service = new Mock<ITeamMemberRegistrationService>();
        service.Setup(x => x.CompleteAsync(It.IsAny<CompleteTeamMemberRegistrationRequestDTO>(), It.IsAny<CancellationToken>()))
            .ReturnsAsync(new TeamMemberRegistrationOutcomeDTO { Status = status });
        var controller = new TeamMemberInviteController(service.Object)
        {
            ControllerContext = new ControllerContext { HttpContext = new DefaultHttpContext() }
        };

        var result = await controller.Complete(new CompleteTeamMemberRegistrationRequestDTO(), CancellationToken.None);

        var failure = result.Should().BeOfType<ObjectResult>().Subject;
        failure.StatusCode.Should().Be(StatusCodes.Status400BadRequest);
        failure.Value.Should().BeEquivalentTo(new
        {
            code = "invalid_invite",
            message = TeamMemberInviteController.InvalidInviteMessage
        });
    }

    [Fact]
    public void ResendInvite_RequiresAuthenticatedCaller()
    {
        typeof(TeamMemberController).GetCustomAttribute<AuthorizeAttribute>().Should().NotBeNull();
        typeof(TeamMemberController).GetMethod(nameof(TeamMemberController.ResendInvite))!
            .GetCustomAttribute<AllowAnonymousAttribute>().Should().BeNull();
    }

    [Fact]
    public async Task ResendInvite_Success_ReturnsInviteSent()
    {
        var invites = new Mock<ITeamMemberInviteService>();
        invites.Setup(x => x.ResendAsync("user-1", It.IsAny<ClaimsPrincipal>(), It.IsAny<CancellationToken>()))
            .ReturnsAsync(new TeamMemberInviteResendOutcomeDTO { Success = true });

        var result = await NewTeamMemberController(invites).ResendInvite("user-1", CancellationToken.None);

        result.Should().BeOfType<OkObjectResult>().Which.Value.Should().BeEquivalentTo(new { message = "Invite sent" });
    }

    [Theory]
    [InlineData("Forbidden", typeof(ForbidResult))]
    [InlineData("Team member not found.", typeof(NotFoundObjectResult))]
    [InlineData("Only pending team members can be re-invited.", typeof(BadRequestObjectResult))]
    [InlineData("The invite could not be emailed. Try again.", typeof(BadRequestObjectResult))]
    public async Task ResendInvite_Failure_MapsToHttpResult(string error, Type expected)
    {
        var invites = new Mock<ITeamMemberInviteService>();
        invites.Setup(x => x.ResendAsync("user-1", It.IsAny<ClaimsPrincipal>(), It.IsAny<CancellationToken>()))
            .ReturnsAsync(new TeamMemberInviteResendOutcomeDTO { Success = false, Error = error });

        var result = await NewTeamMemberController(invites).ResendInvite("user-1", CancellationToken.None);

        result.Should().BeOfType(expected);
    }

    private static TeamMemberController NewTeamMemberController(Mock<ITeamMemberInviteService> invites)
    {
        return new TeamMemberController(Mock.Of<ITeamMemberService>(), Mock.Of<ITeamPermissionService>(), invites.Object)
        {
            ControllerContext = new ControllerContext
            {
                HttpContext = new DefaultHttpContext
                {
                    User = new ClaimsPrincipal(new ClaimsIdentity(new[] { new Claim(ClaimTypes.Role, "Admin") }, "Test"))
                }
            }
        };
    }
}