package org.springblade.common.utils;

import org.springframework.beans.BeanUtils;
import org.springframework.util.CollectionUtils;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

/**
 * ClassName: BeanCopyUtils
 * Description: Bean拷贝工具类
 *
 */
public class BeanCopyUtils {

	private BeanCopyUtils() {
	}

	/**
	 * 将对象属性拷贝到目标类型的同名属性字段中
	 * @param <T>
	 * @param source
	 * @param targetClazz
	 * @return
	 */
	public static <T> T copyProperties(Object source, Class<T> targetClazz) {

		T target = null;
		try {
			target = targetClazz.newInstance();
			BeanUtils.copyProperties(source, target);
		} catch (Exception e) {
			throw new RuntimeException(e);
		}

		return target;
	}

	/**
	 * 将对象属性拷贝到目标类型的同名属性字段中
	 * @param source
	 * @param target
	 * @return
	 */
	public static <T> T copyProperties(Object source, T target) {
		BeanUtils.copyProperties(source, target);
		return target;
	}


	/**
	 * 将list的对象拷贝到目标类型对象中
	 * @param list
	 * @param clazz
	 * @return
	 */
	public static <V, E> List<E> copy(Collection<V> list, Class<E> clazz) {
		List<E> result = new ArrayList<>(12);

		if (!CollectionUtils.isEmpty(list)) {
			for (V source : list) {
				E target = null;
				try {
					target = (E) clazz.newInstance();
					BeanUtils.copyProperties(source, target);
				} catch (Exception e) {
					throw new RuntimeException(e);
				}

				result.add(target);
			}
		}

		return result;
	}

}