package fr.tiogars.inception.domains.domaintemplate.services;
   
   import java.util.Optional;
   
   import org.springframework.beans.factory.annotation.Autowired;
   import org.springframework.stereotype.Service;
   import org.springframework.transaction.annotation.Transactional;
   
   import fr.tiogars.inception.domains.domaintemplate.entities.DomainTemplateEntity;
  import fr.tiogars.inception.domains.domaintemplate.models.CreateDomainTemplateRequest;
  import fr.tiogars.inception.domains.domaintemplate.models.DomainTemplate;
  import fr.tiogars.inception.domains.domaintemplate.repositories.DomainTemplateRepository;
  
  /**
   * Creates DomainTemplates when their business code is available.
   *
   * @since 0.1.0
   */
  @Service
  public class DomainTemplateCreateService {
  
      private final DomainTemplateRepository repository;
  
      /**
       * Creates a service using Spring Data auditing.
       *
       * @param repository domain record repository
       */
      @Autowired
      public DomainTemplateCreateService(DomainTemplateRepository repository) {
          this.repository = repository;
      }
  
      /**
       * Creates a DomainTemplate when its code does not already exist.
       *
       * @param request business data to create
       * @return created template, or an empty optional when the code exists
       */
      @Transactional
      public Optional<DomainTemplate> create(CreateDomainTemplateRequest request) {
          if (repository.findByCode(request.code()).isPresent()) {
              return Optional.empty();
          }
          DomainTemplateEntity entity = new DomainTemplateEntity(
                  request.code(), request.label(), request.description());
          return Optional.of(toRecord(repository.saveAndFlush(entity)));
      }
  
      private static DomainTemplate toRecord(DomainTemplateEntity entity) {
          return new DomainTemplate(
                  entity.getId(),
                  entity.getCode(),
                  entity.getLabel(),
                  entity.getDescription(),
                  entity.getCreatedDate(),
                  entity.getLastModifiedDate(),
                  entity.getCreatedBy(),
                  entity.getLastModifiedBy());
      }
  }