using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using ErsatzTV.Core.Interfaces.Repositories;
using LanguageExt;
using MediatR;
using static ErsatzTV.Application.Libraries.Mapper;

namespace ErsatzTV.Application.Libraries.Queries
{
    public class GetLocalLibraryPathsHandler : IRequestHandler<GetLocalLibraryPaths, List<LocalLibraryPathViewModel>>
    {
        private readonly ILibraryRepository _libraryRepository;

        public GetLocalLibraryPathsHandler(ILibraryRepository libraryRepository) =>
            _libraryRepository = libraryRepository;

        public Task<List<LocalLibraryPathViewModel>> Handle(
            GetLocalLibraryPaths request,
            CancellationToken cancellationToken) =>
            _libraryRepository.GetLocalPaths(request.LocalLibraryId)
                .Map(list => list.Map(ProjectToViewModel).ToList());
    }
}