using JobTrackerApi.Controllers;
using JobTrackerApi.Models;
using JobTrackerApi.Services;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging.Abstractions;
using Microsoft.Extensions.Options;
using Moq;
using Xunit;

namespace JobTrackerApi.Tests;

public sealed class AuthAndSystemControllerTests
{
    [Fact]
    public async Task Update_profile_applies_trimmed_profile_fields()
    {
        var user = new ApplicationUser { Email = "old@example.com", UserName = "olduser" };
        var userManager = CreateUserManager();
        userManager.Setup(x => x.GetUserAsync(It.IsAny<System.Security.Claims.ClaimsPrincipal>())).ReturnsAsync(user);
        userManager.Setup(x => x.UpdateAsync(user)).ReturnsAsync(IdentityResult.Success);

        var controller = new AuthController(BuildConfig(), userManager.Object, Mock.Of<ITokenService>(), Mock.Of<IAppEmailSender>(), Mock.Of<IGoogleTokenValidator>());

        var result = await controller.UpdateProfile(new AuthController.UpdateProfileRequest(" new@example.com ", " newuser ", " Ada ", " Lovelace ", " Ada L. "));

        Assert.IsType<NoContentResult>(result);
        Assert.Equal("new@example.com", user.Email);
        Assert.Equal("newuser", user.UserName);
        Assert.Equal("Ada", user.FirstName);
        Assert.Equal("Lovelace", user.LastName);
        Assert.Equal("Ada L.", user.DisplayName);
    }

    [Fact]
    public void Me_result_includes_google_link_details_for_local_users()
    {
        var method = typeof(AuthController).GetMethod("ToMeResult", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static);
        Assert.NotNull(method);

        var user = new ApplicationUser
        {
            Id = "user-1",
            Email = "person@example.com",
            UserName = "person",
            FirstName = "Ada",
            LastName = "Lovelace",
            DisplayName = "Ada Lovelace",
            GoogleSubject = "sub-123",
            GoogleEmail = "person@example.com",
            GoogleLinkedAt = DateTimeOffset.UtcNow,
        };

        var result = (AuthController.MeResult)method!.Invoke(null, new object[] { user, new List<string> { "Admin" } })!;

        Assert.Equal("local", result.Provider);
        Assert.Equal("Ada", result.FirstName);
        Assert.Equal("Lovelace", result.LastName);
        Assert.Equal("Ada Lovelace", result.DisplayName);
        Assert.NotNull(result.GoogleLink);
        Assert.True(result.GoogleLink!.Linked);
        Assert.Equal("person@example.com", result.GoogleLink.Email);
    }

    [Fact]
    public async Task Admin_system_probe_endpoint_runs_probe_once()
    {
        var summarizer = new Mock<ISummarizerService>();
        summarizer.Setup(x => x.RunProbeAsync(It.IsAny<CancellationToken>())).Returns(Task.CompletedTask);

        var controller = new AdminSystemController(BuildConfig(), new AppPaths(BuildConfig(), new FakeHostEnv()), null!, summarizer.Object, new FakeEnv());

        var result = await controller.RunSummarizerProbe(CancellationToken.None);

        Assert.IsType<NoContentResult>(result);
        summarizer.Verify(x => x.RunProbeAsync(It.IsAny<CancellationToken>()), Times.Once);
    }

    private static IConfiguration BuildConfig()
    {
        return new ConfigurationBuilder()
            .AddInMemoryCollection(new Dictionary<string, string?>())
            .Build();
    }

    private static Mock<UserManager<ApplicationUser>> CreateUserManager()
    {
        var store = new Mock<IUserStore<ApplicationUser>>();
        return new Mock<UserManager<ApplicationUser>>(
            store.Object,
            Options.Create(new IdentityOptions()),
            new PasswordHasher<ApplicationUser>(),
            Array.Empty<IUserValidator<ApplicationUser>>(),
            Array.Empty<IPasswordValidator<ApplicationUser>>(),
            new UpperInvariantLookupNormalizer(),
            new IdentityErrorDescriber(),
            null!,
            new NullLogger<UserManager<ApplicationUser>>()
        );
    }

    private sealed class FakeHostEnv : Microsoft.Extensions.Hosting.IHostEnvironment
    {
        public string EnvironmentName { get; set; } = "Test";
        public string ApplicationName { get; set; } = "JobTrackerApi";
        public string ContentRootPath { get; set; } = AppContext.BaseDirectory;
        public Microsoft.Extensions.FileProviders.IFileProvider ContentRootFileProvider { get; set; } = null!;
    }

    private sealed class FakeEnv : Microsoft.AspNetCore.Hosting.IWebHostEnvironment
    {
        public string ApplicationName { get; set; } = "JobTrackerApi";
        public Microsoft.Extensions.FileProviders.IFileProvider WebRootFileProvider { get; set; } = null!;
        public string WebRootPath { get; set; } = string.Empty;
        public string EnvironmentName { get; set; } = "Test";
        public string ContentRootPath { get; set; } = AppContext.BaseDirectory;
        public Microsoft.Extensions.FileProviders.IFileProvider ContentRootFileProvider { get; set; } = null!;
    }
}