using MassTransit;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging.Abstractions;
using Musify.Domain.Entities;
using Musify.Domain.ValueObjects;
using Musify.Infrastructure.MassTransit.Activities.LifeCycle;
using Musify.Infrastructure.MassTransit.Arguments;
using Musify.Infrastructure.Tests.TestSupport;
using NSubstitute;
using Xunit;

namespace Musify.Infrastructure.Tests.MassTransit
{
    [Collection(InfrastructureCollection.Name)]
    public sealed class LifeCycleActivityTests(InfrastructureTestFixture fixture)
    {
        private static CancellationToken Ct => TestContext.Current.CancellationToken;

        [Fact]
        public async Task MarkTrack_ExistingTrack_SetsTheStatus()
        {
            var track = await SeedTrackAsync();
            await using var database = fixture.CreateDatabase();
            var activity = new MarkTrackLifeCycleActivity(database, NullLogger<MarkTrackLifeCycleActivity>.Instance);
            var context = ExecuteContextFor(new MarkLifeCycleArguments(track.Id, LifeCycleStatus.Removing));

            await activity.Execute(context);

            context.Received(1).Completed();
            await using var verifier = fixture.CreateDatabase();
            var stored = await verifier.Tracks.AsNoTracking().SingleAsync(t => t.Id == track.Id, Ct);
            Assert.Equal(LifeCycleStatus.Removing, stored.LifeCycleStatus);
        }

        [Fact]
        public async Task MarkAlbum_ExistingAlbum_SetsTheStatus()
        {
            var album = await SeedAlbumAsync();
            await using var database = fixture.CreateDatabase();
            var activity = new MarkAlbumLifeCycleActivity(database, NullLogger<MarkAlbumLifeCycleActivity>.Instance);

            await activity.Execute(ExecuteContextFor(new MarkLifeCycleArguments(album.Id, LifeCycleStatus.Failed)));

            await using var verifier = fixture.CreateDatabase();
            Assert.Equal(LifeCycleStatus.Failed, (await verifier.Albums.AsNoTracking().SingleAsync(a => a.Id == album.Id, Ct)).LifeCycleStatus);
        }

        [Fact]
        public async Task MarkPlayList_ExistingPlayList_SetsTheStatus()
        {
            var playList = await SeedPlayListAsync();
            await using var database = fixture.CreateDatabase();
            var activity = new MarkPlayListLifeCycleActivity(database, NullLogger<MarkPlayListLifeCycleActivity>.Instance);

            await activity.Execute(ExecuteContextFor(new MarkLifeCycleArguments(playList.Id, LifeCycleStatus.Removing)));

            await using var verifier = fixture.CreateDatabase();
            Assert.Equal(LifeCycleStatus.Removing, (await verifier.PlayLists.AsNoTracking().SingleAsync(p => p.Id == playList.Id, Ct)).LifeCycleStatus);
        }

        [Fact]
        public async Task Mark_MissingEntity_CompletesWithoutFailing()
        {
            await using var database = fixture.CreateDatabase();
            var activity = new MarkTrackLifeCycleActivity(database, NullLogger<MarkTrackLifeCycleActivity>.Instance);
            var context = ExecuteContextFor(new MarkLifeCycleArguments(Guid.NewGuid(), LifeCycleStatus.Failed));

            await activity.Execute(context);

            context.Received(1).Completed();
        }

        [Fact]
        public async Task DeleteTrack_ExistingTrack_RemovesTheRow()
        {
            var track = await SeedTrackAsync();
            await using var database = fixture.CreateDatabase();
            var activity = new DeleteTrackActivity(database, NullLogger<DeleteTrackActivity>.Instance);
            var context = ExecuteContextFor(new DeleteEntityArguments(track.Id));

            await activity.Execute(context);

            context.Received(1).Completed();
            await using var verifier = fixture.CreateDatabase();
            Assert.False(await verifier.Tracks.AnyAsync(t => t.Id == track.Id, Ct));
        }

        [Fact]
        public async Task DeleteAlbum_ExistingAlbum_RemovesTheRow()
        {
            var album = await SeedAlbumAsync();
            await using var database = fixture.CreateDatabase();
            var activity = new DeleteAlbumActivity(database, NullLogger<DeleteAlbumActivity>.Instance);

            await activity.Execute(ExecuteContextFor(new DeleteEntityArguments(album.Id)));

            await using var verifier = fixture.CreateDatabase();
            Assert.False(await verifier.Albums.AnyAsync(a => a.Id == album.Id, Ct));
        }

        [Fact]
        public async Task DeletePlayList_ExistingPlayList_RemovesTheRow()
        {
            var playList = await SeedPlayListAsync();
            await using var database = fixture.CreateDatabase();
            var activity = new DeletePlayListActivity(database, NullLogger<DeletePlayListActivity>.Instance);

            await activity.Execute(ExecuteContextFor(new DeleteEntityArguments(playList.Id)));

            await using var verifier = fixture.CreateDatabase();
            Assert.False(await verifier.PlayLists.AnyAsync(p => p.Id == playList.Id, Ct));
        }

        [Fact]
        public async Task Delete_MissingEntity_CompletesWithoutFailing()
        {
            await using var database = fixture.CreateDatabase();
            var activity = new DeleteTrackActivity(database, NullLogger<DeleteTrackActivity>.Instance);
            var context = ExecuteContextFor(new DeleteEntityArguments(Guid.NewGuid()));

            await activity.Execute(context);

            context.Received(1).Completed();
        }

        private static ExecuteContext<TArguments> ExecuteContextFor<TArguments>(TArguments arguments)
            where TArguments : class
        {
            var context = Substitute.For<ExecuteContext<TArguments>>();
            context.Arguments.Returns(arguments);
            context.CancellationToken.Returns(Ct);
            return context;
        }

        private async Task<User> SeedUserAsync()
        {
            await using var database = fixture.CreateDatabase();
            var name = $"lifecycle-{Guid.NewGuid():N}"[..30];
            var user = new User { Id = Random.Shared.NextInt64(1, long.MaxValue), Name = name, NormalizedName = name.ToUpperInvariant() };
            await database.Users.AddAsync(user, Ct);
            await database.SaveChangesAsync(Ct);
            return user;
        }

        private async Task<Track> SeedTrackAsync()
        {
            var user = await SeedUserAsync();
            await using var database = fixture.CreateDatabase();
            var title = $"track-{Guid.NewGuid():N}";
            var track = new Track
            {
                Title = title,
                NormalizedTitle = title.ToUpperInvariant(),
                DurationSeconds = 10,
                OwnerUserId = user.Id,
                Pictures = new TrackPictures(),
                Audio = new TrackAudio()
            };
            await database.Tracks.AddAsync(track, Ct);
            await database.SaveChangesAsync(Ct);
            return track;
        }

        private async Task<Album> SeedAlbumAsync()
        {
            var user = await SeedUserAsync();
            await using var database = fixture.CreateDatabase();
            var title = $"album-{Guid.NewGuid():N}";
            var album = new Album { Title = title, NormalizedTitle = title.ToUpperInvariant(), OwnerUserId = user.Id };
            await database.Albums.AddAsync(album, Ct);
            await database.SaveChangesAsync(Ct);
            return album;
        }

        private async Task<PlayList> SeedPlayListAsync()
        {
            var user = await SeedUserAsync();
            await using var database = fixture.CreateDatabase();
            var name = $"pl-{Guid.NewGuid():N}"[..30];
            var playList = new PlayList { Name = name, NormalizedName = name.ToUpperInvariant(), OwnerUserId = user.Id };
            await database.PlayLists.AddAsync(playList, Ct);
            await database.SaveChangesAsync(Ct);
            return playList;
        }
    }
}