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

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

        public async Task<List<InsuranceCompanyViewDto>> GetInsuranceCompanies()
        {
            var insuranceCompanies = await _context.InsuranceCompanies.ToListAsync();
            var insuranceCompaniesDto = _mapper.Map<List<InsuranceCompanyViewDto>>(insuranceCompanies);
            return insuranceCompaniesDto;
        }

        public async Task<InsuranceCompanyViewDto?> GetInsuranceCompany(long id)
        {
            var insuranceCompany = await _context.InsuranceCompanies.FindAsync(id);
            if (insuranceCompany == null)
                throw new EntityNotFoundException("Insurance company not found");
            var insuranceCompanyDto = _mapper.Map<InsuranceCompanyViewDto?>(insuranceCompany);
            return insuranceCompanyDto;
        }

        public async Task CreateInsuranceCompany(InsuranceCompanyCreateDto insuranceCompanyCreateDto)
        {
            var insuranceCompany = _mapper.Map<InsuranceCompany>(insuranceCompanyCreateDto);
            insuranceCompany.CreatedAtUtc = DateTime.UtcNow;
            await _context.InsuranceCompanies.AddAsync(insuranceCompany);
            await _context.SaveChangesAsync();
        }

        public async Task UpdateInsuranceCompany(long insuranceCompanyId, InsuranceCompanyUpdateDto insuranceCompanyUpdateDto)
        {
            var insuranceCompany = _context.InsuranceCompanies.Find(insuranceCompanyId);
            if (insuranceCompany == null)
                throw new EntityNotFoundException($"Insurance company not found");

            _mapper.Map(insuranceCompanyUpdateDto, insuranceCompany);
            insuranceCompany.UpdatedAtUtc = DateTime.UtcNow;

            _context.Entry(insuranceCompany).State = EntityState.Modified;
            await _context.SaveChangesAsync();
        }

        public async Task DeleteInsuranceCompany(long insuranceCompanyId)
        {
            var insuranceCompany = _context.InsuranceCompanies.Find(insuranceCompanyId);
            if (insuranceCompany == null)
                throw new EntityNotFoundException("Insurance company not found");

            _context.Remove(insuranceCompany);
            await _context.SaveChangesAsync();
        }
    }
}