package info.magnolia.ui.field.factory;
   
   import info.magnolia.cms.security.MgnlUserManager;
   import info.magnolia.context.Context;
   import info.magnolia.objectfactory.ComponentProvider;
   import info.magnolia.ui.field.DateFieldDefinition;
   
   import java.time.ZoneId;
   import java.util.TimeZone;
  
  import javax.inject.Inject;
  import javax.inject.Provider;
  
  import com.vaadin.ui.AbstractDateField;
  import com.vaadin.ui.Component;
  import com.vaadin.ui.DateField;
  import com.vaadin.ui.DateTimeField;
  
  /**
   * Creates and initializes a date field based on a field definition.
   */
  public class DateFieldFactory extends AbstractFieldFactory<Object, DateFieldDefinition> {
  
      private final Provider<Context> contextProvider;
  
      @Inject
      public DateFieldFactory(DateFieldDefinition definition, Provider<Context> contextProvider, ComponentProvider componentProvider) {
          super(definition, componentProvider);
          this.contextProvider = contextProvider;
      }
  
      @Override
      protected Component createFieldComponent() {
          AbstractDateField field;
          if (getDefinition().isTime()) {
              field = new DateTimeField();
          } else {
              field = new DateField();
          }
  
          if (getDefinition().isTime()) {
              field.setDateFormat(getDefinition().getDateFormat() + " " + getDefinition().getTimeFormat());
          } else {
              field.setDateFormat(getDefinition().getDateFormat());
          }
  
          field.setZoneId(zoneId());
  
          return field;
      }
  
      private ZoneId zoneId() {
          final String timeZoneId = contextProvider.get().getUser().getProperty(MgnlUserManager.PROPERTY_TIMEZONE);
          final ZoneId zoneId;
  
          if (timeZoneId == null || timeZoneId.isEmpty()) {
              zoneId = TimeZone.getDefault().toZoneId();
          } else {
              zoneId = TimeZone.getTimeZone(timeZoneId).toZoneId();
          }
  
          return zoneId;
      }
  
  }