using System.Linq;
using System.Threading.Tasks;
using Microsoft.Extensions.DependencyInjection;
using NSubstitute;
using Shouldly;
using Volo.Abp.Users;
using Volo.CmsKit.Public.Ratings;
using Xunit;

namespace Volo.CmsKit.Ratings
{
    public class RatingPublicAppService_Tests : CmsKitApplicationTestBase
    {
        private readonly IRatingPublicAppService _ratingAppService;
        private ICurrentUser _currentUser;
        private readonly CmsKitTestData _cmsKitTestData;

        public RatingPublicAppService_Tests()
        {
            _ratingAppService = GetRequiredService<IRatingPublicAppService>();
            _cmsKitTestData = GetRequiredService<CmsKitTestData>();
        }

        protected override void AfterAddApplication(IServiceCollection services)
        {
            _currentUser = Substitute.For<ICurrentUser>();
            services.AddSingleton(_currentUser);
        }

        [Fact]
        public async Task CreateAsync()
        {
            _currentUser.Id.Returns(_cmsKitTestData.User1Id);

            var newRating = await _ratingAppService.CreateAsync(
                _cmsKitTestData.EntityType1,
                _cmsKitTestData.EntityId2,
                new CreateUpdateRatingInput
                {
                    StarCount = 4
                });

            UsingDbContext(context =>
            {
                var ratings = context.Set<Rating>().Where(x =>
                    x.EntityId == _cmsKitTestData.EntityId2 && x.EntityType == _cmsKitTestData.EntityType1).ToList();

                ratings
                    .Any(c => c.Id == newRating.Id && c.CreatorId == newRating.CreatorId &&
                              c.StarCount == newRating.StarCount)
                    .ShouldBeTrue();
            });
        }
        
        [Fact]
        public async Task CreateAsync_Should_Update_If_Rating_Is_Exist()
        {
            _currentUser.Id.Returns(_cmsKitTestData.User1Id);

            var entity =
                (await _ratingAppService.GetGroupedStarCountsAsync(_cmsKitTestData.EntityType1,
                    _cmsKitTestData.EntityId1)).FirstOrDefault();
        
            var updatedEntity = await _ratingAppService.CreateAsync(
                _cmsKitTestData.EntityType1,
                _cmsKitTestData.EntityId1,
                new CreateUpdateRatingInput
                {
                    StarCount = 5
                });
        
            entity.StarCount.ShouldBe(updatedEntity.StarCount);
        }

        [Fact]
        public async Task GetGroupedStarCountsAsync()
        {
            _currentUser.Id.Returns(_cmsKitTestData.User1Id);

            var ratings = await _ratingAppService.GetGroupedStarCountsAsync(
                _cmsKitTestData.EntityType1,
                _cmsKitTestData.EntityId1
            );

            ratings.ShouldNotBeNull();
            ratings.Count.ShouldBeGreaterThan(0);
        }

        [Fact]
        public async Task DeleteAsync()
        {
            _currentUser.Id.Returns(_cmsKitTestData.User1Id);

            var rating = await _ratingAppService.CreateAsync(
                _cmsKitTestData.EntityType1,
                _cmsKitTestData.EntityId1,
                new CreateUpdateRatingInput
                {
                    StarCount = 4
                });

            await _ratingAppService.DeleteAsync(_cmsKitTestData.EntityType1, _cmsKitTestData.EntityId1);

            UsingDbContext(context =>
            {
                var deletedComment = context.Set<Rating>().FirstOrDefault(x => x.Id == rating.Id);

                deletedComment.ShouldBeNull();
            });
        }
    }
}