package top.infra.jackson2;
   
   import static java.lang.Boolean.FALSE;
   
   import com.fasterxml.jackson.databind.ObjectMapper;
   
   import org.springframework.core.Ordered;
   
   import java.util.Optional;
  import java.util.TimeZone;
  
  import top.infra.common.ClassUtils;
  
  /**
   * Created by zhanghaolun on 16/7/28.
   */
  public interface Jackson2MapperCustomizer extends Ordered {
  
      String CLASS_XML_MAPPER = "com.fasterxml.jackson.dataformat.xml.XmlMapper";
  
      String PATTERN_JAVA_ISO8601 = "yyyy-MM-dd'T'HH:mm:ss.SSSXXX";
  
      void customize(Jackson2Properties properties, ObjectMapper mapper);
  
      @Override
      default int getOrder() {
          return Ordered.LOWEST_PRECEDENCE;
      }
  
      default String dateFormat(final Jackson2Properties properties) {
          final String dateFormat;
          if (properties.getDateFormat() == null) {
              dateFormat = PATTERN_JAVA_ISO8601;
          } else {
              dateFormat = properties.getDateFormat();
          }
          return dateFormat;
      }
  
      default Boolean isXmlMapper(final ObjectMapper mapper) {
          final Optional<Class<?>> classOptional = ClassUtils.forName(CLASS_XML_MAPPER);
          return mapper != null && classOptional.map(xmlMapperClass -> xmlMapperClass.isAssignableFrom(mapper.getClass())).orElse(FALSE);
      }
  
      default TimeZone timeZone(final Jackson2Properties properties) {
          // Since Jackson 2.6.3 we always need to set a TimeZone (see
          // gh-4170). If none in our properties fallback to the Jackson's
          // default
          final TimeZone timeZone;
          if (properties.getTimeZone() == null) {
              //timeZone = DefaultTimeZone.DEFAULT_TIME_ZONE;
              timeZone = new ObjectMapper().getSerializationConfig().getTimeZone();
          } else {
              timeZone = properties.getTimeZone();
          }
          return timeZone;
      }
  }