package top.infra.jackson2;
   
   import java.util.Collection;
   import java.util.Optional;
   
   import top.infra.common.ClassUtils;
   
   public interface Jackson2MapperCustomizerFactory {
   
      String CLASS_JACKSON2_OBJECT_MAPPER_BUILDER = "org.springframework.http.converter.json.Jackson2ObjectMapperBuilder";
  
      Optional<Jackson2MapperCustomizer> getObject();
  
      default Optional<Jackson2MapperCustomizer> newInstanceIfPresent(
          final String customizerClass, final Collection<String> classesMustPresent) {
          try {
              final Optional<Jackson2MapperCustomizer> customizer;
  
              if (ClassUtils.isPresent(customizerClass) && classesMustPresent.stream().allMatch(ClassUtils::isPresent)) {
                  final Optional<Class<?>> classOptional = ClassUtils.forName(customizerClass);
                  if (classOptional.isPresent()) {
                      customizer = Optional.of((Jackson2MapperCustomizer) classOptional.get().newInstance());
                  } else {
                      customizer = Optional.empty();
                  }
              } else {
                  customizer = Optional.empty();
              }
  
              return customizer;
          } catch (final ReflectiveOperationException ex) {
              return Optional.empty();
          }
      }
  }