using System.Diagnostics.CodeAnalysis;

namespace Diligent.WebAPI.Business.Services
{
    [ExcludeFromCodeCoverage]
    public class InsurancePoliciesService : IInsurancePoliciesService
    {
        private readonly DatabaseContext _context;
        private readonly IWebhookPublisherService _webhookPublisher;
        private readonly IMapper _mapper;

        public InsurancePoliciesService(DatabaseContext context, IWebhookPublisherService webhookPublisher, IMapper mapper)
        {
            _context = context;
            _webhookPublisher = webhookPublisher;
            _mapper = mapper;
        }

        public async Task<List<InsurancePolicyViewDto>> GetInsurancePolicies()
        {
            var insurancePolicies = await _context.InsurancePolicies
                .Include(i => i.Insurer)
                .ThenInclude(k => k.InsuranceCompany)
                .ToListAsync();

            var insurancePoliciesDto = _mapper.Map<List<InsurancePolicyViewDto>>(insurancePolicies);
            return insurancePoliciesDto;
        }

        public async Task<InsurancePolicyViewDto?> GetInsurancePolicy(long id)
        {
            var insurancePolicy = await _context.InsurancePolicies
                .Include(i => i.Insurer)
                .ThenInclude(k => k.InsuranceCompany)
                .FirstOrDefaultAsync(i => i.Id == id);

            if (insurancePolicy == null)
                throw new EntityNotFoundException("Insurance policy not found");

            var insurancePolicyDto = _mapper.Map<InsurancePolicyViewDto>(insurancePolicy);
            return insurancePolicyDto;
        }

        public async Task CreateInsurancePolicy(InsurancePolicyCreateDto insurancePolicyCreateDto)
        {
            var insurancePolicy = _mapper.Map<InsurancePolicy>(insurancePolicyCreateDto);
            var result = await _context.InsurancePolicies.AddAsync(insurancePolicy);

            await _webhookPublisher.PublishAsync("insurancePolicy.created", result);
            await _context.SaveChangesAsync();
        }

        public async Task UpdateInsurancePolicy(long insurancePolicyId, InsurancePolicyUpdateDto insurancePolicyUpdateDto)
        {
            var insurancePolicy = _context.InsurancePolicies.Find(insurancePolicyId);
            if (insurancePolicy == null)
                throw new EntityNotFoundException("Insurance policy not found");

            _mapper.Map(insurancePolicyUpdateDto, insurancePolicy);
            insurancePolicy.UpdatedAtUtc = DateTime.Now;

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

        public async Task DeleteInsurancePolicy(long insurancePolicyId)
        {
            var insurancePolicy = _context.InsurancePolicies.Find(insurancePolicyId);
            if (insurancePolicy == null)
                throw new EntityNotFoundException("Insurance policy not found");

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