using ErrorOr;
using Musify.Application.Albums;
using Musify.Application.Tests.TestSupport;
using Xunit;

namespace Musify.Application.Tests.Albums;

public sealed class CreateAlbumCommandHandlerTests : HandlerTestBase
{
    private CreateAlbumCommandHandler CreateHandler() => new(Database, NoOpLogger<CreateAlbumCommandHandler>());

    [Fact]
    public async Task Handle_UserExists_CreatesAlbumAndReturnsIt()
    {
        var owner = TestEntities.User();
        await SeedAsync(owner);

        var command = new CreateAlbumCommand(owner.Id, "  My Album  ", "A description", 2024);

        var result = await CreateHandler().Handle(command, TestContext.Current.CancellationToken);

        Assert.False(result.IsError);
        Assert.Equal("My Album", result.Value.Title);
        Assert.Equal("A description", result.Value.Description);
        Assert.Equal(2024, result.Value.ReleaseYear);
        Assert.Equal(owner.Id, result.Value.OwnerUserId);
        Assert.Equal(0, result.Value.TrackCount);

        var stored = await Database.UserAlbums.FindAsync([result.Value.Id], TestContext.Current.CancellationToken);
        Assert.NotNull(stored);
        Assert.Equal("MY ALBUM", stored.NormalizedTitle);
    }

    [Fact]
    public async Task Handle_UserDoesNotExist_ReturnsNotFound()
    {
        var command = new CreateAlbumCommand(UserId: 404, "Orphan Album", Description: null, ReleaseYear: null);

        var result = await CreateHandler().Handle(command, TestContext.Current.CancellationToken);

        Assert.Equal(ErrorType.NotFound, result.FirstError.Type);
    }
}