using Core.Blueprint.Service.Domain.Dtos;
using Core.Blueprint.Service.External.Clients.SampleImageClient;
using Core.Blueprint.Service.UseCases.GetSampleImage.Input;
using Core.Blueprint.Service.UseCases.GetSampleImage.Ports;
using FluentValidation;
using Lib.Architecture.BuildingBlocks;

namespace Core.Blueprint.Service.UseCases.GetSampleImage
{
    public class GetSampleImageHandler(IGetSampleImagePort port, IValidator<GetSampleImageRequest> validator, ISampleImageClientService clientService) : IComponentHandler<GetSampleImageRequest>
    {
        private readonly IGetSampleImagePort _port = port;
        private readonly IValidator<GetSampleImageRequest> _validator = validator;
        private readonly ISampleImageClientService _clientService = clientService;

        public async ValueTask ExecuteAsync(GetSampleImageRequest command, CancellationToken cancellationToken = default)
        {
            try
            {
                if (!command.IsValid(_validator))
                {
                    _port.ValidationErrors(command.Notifications);
                    return;
                }

                var result = await _clientService.GetFirstImageUrl();

                if (result == null)
                {
                    _port.NoContentSuccess();
                    return;
                }

                _port.Success(result);
            }
            catch(Exception ex)
            {
                _port.BusinessError(ex.Message);
            }

        }
    }
}