using AutoMapper;
using ProximaContracts.Application.Rates.Services;
using ProximaContracts.Domain.Contracts.DTOs.Request;
using ProximaContracts.Domain.Contracts.DTOs.Response;
using ProximaContracts.Infrastructure.Rpositories.Contracts;
using ProximaContracts.Shared.Exceptions.Repositories.Contract;

namespace ProximaContracts.Application.Contracts.Services
{
    public class ContractService(IContractRepository repository, IMapper mapper, IRateService rateService) : IContractService
    {
        private readonly IContractRepository _repository = repository;
        private readonly IMapper _mapper = mapper;
        private readonly IRateService _rateService = rateService;
        public async Task<ContractByIdResponseDto> GetContractById(ContractByIdRequestDto dto)
        {
            var result = await _repository.GetContractById(dto);
            return _mapper.Map< ContractByIdResponseDto>(result);
        }

        public async Task<IEnumerable<GetContractsResponseDto>> GetContracts()
        {
            var result = await _repository.GetContracts();
            return _mapper.Map<List<GetContractsResponseDto>>(result);
        }

        public async Task<CreateContractResponseDto> CreateContract(CreateContractRequestDto dto)
        {
            var rateExists = await _rateService.CheckIfExists(dto.RateId);
            if (!rateExists)
            {
                throw new CreateContractRateNotFoundException($"No rate found with id: {dto.RateId}, Contract can't be created.");
            }
            var result = await _repository.CreateContract(dto);

            return new CreateContractResponseDto()
            {
                IsCreated = result.HasValue ? true : false,
                Message = result.HasValue ? "Created" : "Error creating contract",
                NewContractId = result.HasValue ? result.Value : 0
            };
            
        }

        public async Task<UpdateContractResponseDto> UpdateContract(UpdateContractRequestDto dto)
        {
            var result = await _repository.UpdateContract(dto);
            return new UpdateContractResponseDto()
            {
                IsUpdated = result.HasValue ? true : false,
                Message = result.HasValue ? "Updated" : "Error updating contract",
                ContractId = result.HasValue ? result.Value : 0
            };
        }
    }
}