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package org.modelmapper;

import static org.testng.Assert.assertEquals;

import java.util.UUID;

import org.modelmapper.config.Configuration.AccessLevel;
import org.modelmapper.spi.MappingContext;

/**
 * From https://github.com/jhalterman/modelmapper/issues/90#issuecomment-32583382
 */
public class PropertyExtraction {
  public static class Order {
    String id;
    DeliveryAddress[] deliveryAddress;
  }

  public static class DeliveryAddress {
    Integer addressId;
  }

  public static class OrderDTO {
    String id;
    Integer[] deliveryAddress_addressId;
  }

  public static void main(String... args) {
    ModelMapper modelMapper = new ModelMapper();
    modelMapper.getConfiguration()
        .setFieldMatchingEnabled(true)
        .setFieldAccessLevel(AccessLevel.PACKAGE_PRIVATE);

    modelMapper.createTypeMap(Order.class, OrderDTO.class).setPostConverter(
        new Converter() {
          public OrderDTO convert(MappingContext context) {
            DeliveryAddress[] deliveryAddress = context.getSource().deliveryAddress;
            context.getDestination().deliveryAddress_addressId = new Integer[deliveryAddress.length];
            for (int i = 0; i < deliveryAddress.length; i++)
              context.getDestination().deliveryAddress_addressId[i] = deliveryAddress[i].addressId;
            return context.getDestination();
          }
        });

    Order order = new Order();
    order.id = UUID.randomUUID().toString();
    DeliveryAddress da1 = new DeliveryAddress();
    da1.addressId = 123;
    DeliveryAddress da2 = new DeliveryAddress();
    da2.addressId = 456;
    order.deliveryAddress = new DeliveryAddress[] { da1, da2 };
    
    OrderDTO dto = modelMapper.map(order, OrderDTO.class);

    assertEquals(dto.id, order.id);
    assertEquals(dto.deliveryAddress_addressId, new Integer[] { 123, 456 });
  }
}