using AutoMapper;
using DigitalData.Core.Application;
using DigitalData.Core.Contracts.Application;
using DigitalData.Core.Contracts.CultureServices;
using DigitalData.UserManager.Application.Contracts;
using DigitalData.UserManager.Application.DTOs.User;
using DigitalData.UserManager.Domain.Entities;
using DigitalData.UserManager.Infrastructure.Contracts;

namespace DigitalData.UserManager.Application.Services
{
    public class UserService : CRUDService<IUserRepository, UserCreateDto, UserReadDto, UserUpdateDto, User, int>, IUserService
    {
        public UserService(IUserRepository repository, IKeyTranslationService translationService, IMapper mapper) : base(repository, translationService, mapper)
        {
        }

        public async Task<IServiceResult<IEnumerable<UserReadDto>>> ReadByModuleIdAsync(int moduleId)
        {
            var users = await _repository.ReadByModuleIdAsync(moduleId);
            IEnumerable<UserReadDto> readDTOs = _mapper.MapOrThrow<IEnumerable<UserReadDto>>(users);
            return Successful(readDTOs);
        }

        public async Task<IServiceResult<IEnumerable<UserReadDto>>> ReadByGroupIdAsync(int groupId)
        {
            var users = await _repository.ReadByGroupIdAsync(groupId);
            IEnumerable<UserReadDto> readDTOs = _mapper.MapOrThrow<IEnumerable<UserReadDto>>(users);
            return Successful(readDTOs);
        }

        public async Task<IServiceResult<IEnumerable<UserReadDto>>> ReadUnassignedByModuleIdAsync(int moduleId)
        {
            var users = await _repository.ReadUnassignedByModuleIdAsync(moduleId);
            IEnumerable<UserReadDto> readDTOs = _mapper.MapOrThrow<IEnumerable<UserReadDto>>(users);
            return Successful(readDTOs);
        }

        public async Task<IServiceResult<IEnumerable<UserReadDto>>> ReadUnassignedByGroupIdAsync(int groupId)
        {
            var users = await _repository.ReadUnassignedByGroupIdAsync(groupId);
            IEnumerable<UserReadDto> readDTOs = _mapper.MapOrThrow<IEnumerable<UserReadDto>>(users);
            return Successful(readDTOs);
        }

        public async Task<IServiceResult<int>> CreateAsync(UserPrincipalDto upDto)
        {
            var user = _mapper.MapOrThrow<User>(upDto);

            if (await HasEntity(user.Guid))
                return Failed<int>(MessageKey.UserAlreadyExists.ToString());

            var createdUser = await _repository.CreateAsync(user);
            if (createdUser is null)
                return Failed<int>();
            else
                return Successful(KeyValueOf(createdUser));
        }
    }
}