ErsatzTV/ErsatzTV.Application/Maintenance/Commands/DeleteItemsFromDatabaseHandler.cs

using System.Threading;
using System.Threading.Tasks;
using ErsatzTV.Core;
using ErsatzTV.Core.Interfaces.Repositories;
using ErsatzTV.Core.Interfaces.Search;
using LanguageExt;

namespace ErsatzTV.Application.Maintenance.Commands
{
    public class
        DeleteItemsFromDatabaseHandler : MediatR.IRequestHandler<DeleteItemsFromDatabase, Either<BaseError, Unit>>
    {
        private readonly IMediaItemRepository _mediaItemRepository;
        private readonly ISearchIndex _searchIndex;

        public DeleteItemsFromDatabaseHandler(
            IMediaItemRepository mediaItemRepository,
            ISearchIndex searchIndex)
        {
            _mediaItemRepository = mediaItemRepository;
            _searchIndex = searchIndex;
        }

        public async Task<Either<BaseError, Unit>> Handle(
            DeleteItemsFromDatabase request,
            CancellationToken cancellationToken)
        {
            Either<BaseError, Unit> deleteResult = await _mediaItemRepository.DeleteItems(request.MediaItemIds);
            if (deleteResult.IsRight)
            {
                await _searchIndex.RemoveItems(request.MediaItemIds);
                _searchIndex.Commit();
            }

            return deleteResult;
        }
    }
}