using Diligent.WebAPI.Business.Extensions;
using Diligent.WebAPI.Contracts.DTOs.SelectionLevel;

namespace Diligent.WebAPI.Business.Services
{
    public class SelectionLevelService : ISelectionLevelService
    {
        private readonly DatabaseContext _context;
        private readonly IMapper _mapper;

        public SelectionLevelService(DatabaseContext context, IMapper mapper)
        {
            _context = context;
            _mapper = mapper;
        }

        public async Task<List<SelectionLevelResponseWithDataDto>> GetAllAsync() =>
            _mapper.Map<List<SelectionLevelResponseWithDataDto>>(await _context.SelectionLevels.Include(sl => sl.SelectionProcesses).ThenInclude(sp => sp.Applicant).ToListAsync());

        public async Task<SelectionLevelResposneDto> GetByIdAsync(int id)
        {
            var sl = await _context.SelectionLevels.FindAsync(id);

            if (sl is null)
                throw new EntityNotFoundException("Selection level not found");

            return _mapper.Map<SelectionLevelResposneDto>(sl);

        }

        public List<SelectionLevelResponseWithDataDto> GetFilteredLevelsAsync(SelectionProcessFilterDto filters)
        {
            var filteredLevels = _context.SelectionLevels.Include(x => x.SelectionProcesses).ThenInclude(sp => sp.Applicant).ToList().FilterLevels(filters);

            return _mapper.Map<List<SelectionLevelResponseWithDataDto>>(filteredLevels);
        }
    }
}