package fr.tiogars.chat.domains.task.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.chat.domains.task.entities.TaskEntity;
  import fr.tiogars.chat.domains.task.models.CreateTaskRequest;
  import fr.tiogars.chat.domains.task.models.Task;
  import fr.tiogars.chat.domains.task.repositories.TaskRepository;
  
  /**
   * Creates Tasks when their business code is available.
   *
   * @since 0.1.0
   */
  @Service
  public class TaskCreateService {
  
      private final TaskRepository repository;
  
      @Autowired
      private TaskReferences references;
  
      /**
       * Creates a service using Spring Data auditing.
       *
       * @param repository domain record repository
       */
      @Autowired
      public TaskCreateService(TaskRepository repository) {
          this.repository = repository;
      }
  
      /**
       * Creates a Task 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<Task> create(CreateTaskRequest request) {
          if (repository.findByCode(request.code()).isPresent()) {
              return Optional.empty();
          }
          TaskEntity entity = new TaskEntity(
                  request.code(), request.label(), request.description());
          entity.attributes(request.status(), request.priority(), request.dueDate(), request.assignedTo());
          if (references != null) {
              references.apply(entity, request.tagIds(), request.nomenclatureId());
          }
          return Optional.of(toRecord(repository.saveAndFlush(entity)));
      }
  
      private static Task toRecord(TaskEntity entity) {
          return new Task(
                  entity.getId(),
                  entity.getCode(),
                  entity.getLabel(),
                  entity.getDescription(),
                  entity.getCreatedDate(),
                  entity.getLastModifiedDate(),
                  entity.getCreatedBy(),
                  entity.getLastModifiedBy(),
                  entity.getStatus(), entity.getPriority(), entity.getDueDate(), entity.getAssignedTo(),
                  entity.getTagIds(), entity.getNomenclatureId());
      }
  }