using Data.SeaHavenIndustries;
using FluentAssertions;
using Microsoft.EntityFrameworkCore;
using SeaHaven.DataServices.Implementation;
using Xunit;

namespace Api.SeaHavenIndustries.Tests;

public class AccountOwnerDataServiceTests
{
    private static ApplicationDbContext NewContext()
    {
        var options = new DbContextOptionsBuilder<ApplicationDbContext>()
            .UseInMemoryDatabase(Guid.NewGuid().ToString())
            .Options;
        return new ApplicationDbContext(options);
    }

    [Fact]
    public async Task EnsureConfiguredOwnerAsync_MarksOnlyConfiguredUser()
    {
        await using var context = NewContext();
        context.Users.AddRange(
            new ApplicationUser { Id = "old-owner", UserName = "old@example.com", IsAccountOwner = true },
            new ApplicationUser { Id = "configured-owner", UserName = "configured@example.com" });
        await context.SaveChangesAsync();

        var service = new AccountOwnerDataService(context);
        (await service.EnsureConfiguredOwnerAsync(" configured-owner ", CancellationToken.None)).Should().BeTrue();

        (await context.Users.SingleAsync(user => user.Id == "old-owner")).IsAccountOwner.Should().BeFalse();
        (await context.Users.SingleAsync(user => user.Id == "configured-owner")).IsAccountOwner.Should().BeTrue();
    }

    [Fact]
    public async Task EnsureConfiguredOwnerAsync_WithNoConfiguration_ClearsExistingOwner()
    {
        await using var context = NewContext();
        context.Users.Add(new ApplicationUser { Id = "owner", UserName = "owner@example.com", IsAccountOwner = true });
        await context.SaveChangesAsync();

        var service = new AccountOwnerDataService(context);
        (await service.EnsureConfiguredOwnerAsync(null, CancellationToken.None)).Should().BeTrue();
        (await service.EnsureConfiguredOwnerAsync("  ", CancellationToken.None)).Should().BeFalse();

        (await context.Users.SingleAsync()).IsAccountOwner.Should().BeFalse();
    }

    [Fact]
    public async Task EnsureConfiguredOwnerAsync_RejectsUnknownUser()
    {
        await using var context = NewContext();
        var service = new AccountOwnerDataService(context);

        var action = () => service.EnsureConfiguredOwnerAsync("missing", CancellationToken.None);

        await action.Should().ThrowAsync<InvalidOperationException>()
            .WithMessage("The configured account owner user was not found.");
    }
}