using AutoMapper;
using Liber_Incantamentum.Application.DTOs.Spell;
using Liber_Incantamentum.Application.Exceptions;
using Liber_Incantamentum.Application.Interfaces;
using Liber_Incantamentum.Domain.Entities;
using Liber_Incantamentum.Domain.Filter;
using Liber_Incantamentum.Domain.Repositories;

namespace Liber_Incantamentum.Application.Services.Generals
{
    public class SpellService : ISpellService
    {
        private readonly ISpellRepository _spellRepository;
        private readonly IMapper _mapper;
        public SpellService(ISpellRepository spellRepository, IMapper mapper)
        {
            _spellRepository = spellRepository;
            _mapper = mapper;
        }
        public async Task<bool> AddSpellAsync(SpellDtoCreate dto)
        {
            if (dto == null)
            {
                throw new ArgumentNullException("The DTO received is null");
            }
            var alreadyExistingSpell = await GetAllSpellsAsync(new SpellDtoFilter { Name = dto.Name, Description = dto.Description, Type = dto.Type, CreationDate = dto.CreationDate, MageId = dto.MageId });
            if (alreadyExistingSpell.Any())
            {
                throw new AlreadyExistingException("This spell does already exists");
            }
            return await _spellRepository.AddSpellAsync(_mapper.Map<Spell>(dto));
        }

        public async Task<bool> DeleteSpellAsync(Guid id)
        {
            if (id == Guid.Empty)
            {
                throw new ArgumentNullException("The id is null");
            }
            var alreadyExistingSpell = await GetAllSpellsAsync(new SpellDtoFilter { Id = id });
            if (!alreadyExistingSpell.Any())
            {
                throw new AlreadyExistingException("This spell does not exists");
            }
            return await _spellRepository.DeleteSpellAsync(id);
        }

        public async Task<ICollection<SpellDto>> GetAllSpellsAsync(SpellDtoFilter filter)
        {
            var entities = await _spellRepository.GetAllSpellsAsync(_mapper.Map<SpellFilter>(filter));
            return _mapper.Map<ICollection<SpellDto>>(entities);
        }

        public async Task<SpellDto>? GetSpellByIdAsync(Guid id)
        {
            if (id == Guid.Empty)
            {
                throw new ArgumentNullException("The id is null");
            }
            var alreadyExistingMage = await GetAllSpellsAsync(new SpellDtoFilter { Id = id });
            if (!alreadyExistingMage.Any())
            {
                throw new NotFoundException("This spell does not exists");
            }
            var mage = await _spellRepository.GetSpellByIdAsync(id);
            return _mapper.Map<SpellDto>(mage);
        }

        public async Task<bool> UpdateSpellAsync(SpellDtoUpdate dto, Guid i)
        {
            if (dto == null)
            {
                throw new ArgumentNullException("The DTO received is null");
            }
            var alreadyExistingSpell = await GetAllSpellsAsync(new SpellDtoFilter { Id = dto.Id, Name = dto.Name, Description = dto.Description, Type = dto.Type, CreationDate = dto.CreationDate, MageId = dto.MageId });
            if (!alreadyExistingSpell.Any())
            {
                throw new NotFoundException("This spell does not exists");
            }
            return await _spellRepository.UpdateSpellAsync(_mapper.Map<Spell>(dto));
        }
    }
}