package cn.jeeweb.core.utils;

import java.beans.PropertyDescriptor;
import java.lang.reflect.InvocationTargetException;
import java.util.Iterator;
import java.util.Map;

import org.apache.commons.beanutils.DynaBean;
import org.apache.commons.beanutils.DynaProperty;
import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.beanutils.PropertyUtilsBean;
import com.alibaba.fastjson.JSONObject;

/**
 * 
 * @ClassName: MyBeanUtils
 * @Description:实体拷贝
 * @author: 王存见
 * @date: 2017年3月1日 上午9:17:55
 * 
 *
 */
@SuppressWarnings({ "rawtypes", "unchecked" })
public class MyBeanUtils extends PropertyUtilsBean {

	public MyBeanUtils() {
		super();
	}

	private static void convert(Object dest, Object orig) throws IllegalAccessException, InvocationTargetException {

		// Validate existence of the specified beans
		if (dest == null) {
			throw new IllegalArgumentException("No destination bean specified");
		}
		if (orig == null) {
			throw new IllegalArgumentException("No origin bean specified");
		}

		// Copy the properties, converting as necessary
		if (orig instanceof DynaBean) {
			DynaProperty origDescriptors[] = ((DynaBean) orig).getDynaClass().getDynaProperties();
			for (int i = 0; i < origDescriptors.length; i++) {
				String name = origDescriptors[i].getName();
				if (PropertyUtils.isWriteable(dest, name)) {
					Object value = ((DynaBean) orig).get(name);
					try {
						getInstance().setSimpleProperty(dest, name, value);
					} catch (Exception e) {
						; // Should not happen
					}

				}
			}
		} else if (orig instanceof Map) {
			Iterator names = ((Map<?, ?>) orig).keySet().iterator();
			while (names.hasNext()) {
				String name = (String) names.next();
				if (PropertyUtils.isWriteable(dest, name)) {
					Object value = ((Map) orig).get(name);
					try {
						getInstance().setSimpleProperty(dest, name, value);
					} catch (Exception e) {
						; // Should not happen
					}

				}
			}
		} else
		/* if (orig is a standard JavaBean) */
		{
			PropertyDescriptor origDescriptors[] = PropertyUtils.getPropertyDescriptors(orig);
			for (int i = 0; i < origDescriptors.length; i++) {
				String name = origDescriptors[i].getName();
				// String type =
				// origDescriptors[i].getPropertyType().toString();
				if ("class".equals(name)) {
					continue; // No point in trying to set an object's class
				}
				if (PropertyUtils.isReadable(orig, name) && PropertyUtils.isWriteable(dest, name)) {
					try {
						Object value = PropertyUtils.getSimpleProperty(orig, name);
						getInstance().setSimpleProperty(dest, name, value);
					} catch (java.lang.IllegalArgumentException ie) {
						; // Should not happen
					} catch (Exception e) {
						; // Should not happen
					}

				}
			}
		}

	}

	/**
	 * 对象拷贝 数据对象空值不拷贝到目标对象
	 * 
	 * @Title: copyBeanNotNull2Bean
	 * @Description: 对象拷贝 数据对象空值不拷贝到目标对象
	 * @param databean
	 * @param tobean
	 * @throws Exception
	 * @return: void
	 */
	public static void copyBeanNotNull2Bean(Object databean, Object tobean) throws Exception {
		PropertyDescriptor origDescriptors[] = PropertyUtils.getPropertyDescriptors(databean);
		for (int i = 0; i < origDescriptors.length; i++) {
			String name = origDescriptors[i].getName();
			// String type = origDescriptors[i].getPropertyType().toString();
			if ("class".equals(name)) {
				continue; // No point in trying to set an object's class
			}
			if (PropertyUtils.isReadable(databean, name) && PropertyUtils.isWriteable(tobean, name)) {
				try {
					Object value = PropertyUtils.getSimpleProperty(databean, name);
					if (value != null) {
						getInstance().setSimpleProperty(tobean, name, value);
					}
				} catch (java.lang.IllegalArgumentException ie) {
					; // Should not happen
				} catch (Exception e) {
					; // Should not happen
				}

			}
		}
	}

	/**
	 * 对象拷贝 数据对象空值不拷贝到目标对象
	 * 
	 * @Title: copyJsonNotNull2Bean
	 * @Description: 对象拷贝 数据对象空值不拷贝到目标对象
	 * @param json
	 * @param tobean
	 * @throws Exception
	 * @return: void
	 */
	public static void copyJsonNotNull2Bean(String json, Object tobean) throws Exception {
		Object databean = JSONObject.parseObject(json, tobean.getClass());
		copyBeanNotNull2Bean(databean, tobean);
	}

	/**
	 * 把orig和dest相同属性的value复制到dest中
	 * 
	 * @param dest
	 * @param orig
	 * @throws IllegalAccessException
	 * @throws InvocationTargetException
	 */
	public static void copyBean2Bean(Object dest, Object orig) throws Exception {
		convert(dest, orig);
	}

	public static void copyBean2Map(Map map, Object bean) {
		PropertyDescriptor[] pds = PropertyUtils.getPropertyDescriptors(bean);
		for (int i = 0; i < pds.length; i++) {
			PropertyDescriptor pd = pds[i];
			String propname = pd.getName();
			try {
				Object propvalue = PropertyUtils.getSimpleProperty(bean, propname);
				map.put(propname, propvalue);
			} catch (IllegalAccessException e) {

			} catch (InvocationTargetException e) {

			} catch (NoSuchMethodException e) {

			}
		}
	}

	/**
	 * 将Map内的key与Bean中属性相同的内容复制到BEAN中
	 * 
	 * @param bean
	 *            Object
	 * @param properties
	 *            Map
	 * @throws IllegalAccessException
	 * @throws InvocationTargetException
	 */
	public static void copyMap2Bean(Object bean, Map properties)
			throws IllegalAccessException, InvocationTargetException {
		// Do nothing unless both arguments have been specified
		if ((bean == null) || (properties == null)) {
			return;
		}
		// Loop through the property name/value pairs to be set
		Iterator names = properties.keySet().iterator();
		while (names.hasNext()) {
			String name = (String) names.next();
			// Identify the property name and value(s) to be assigned
			if (name == null) {
				continue;
			}
			Object value = properties.get(name);
			try {
				Class clazz = PropertyUtils.getPropertyType(bean, name);
				if (null == clazz) {
					continue;
				}
				String className = clazz.getName();
				if (className.equalsIgnoreCase("java.sql.Timestamp")) {
					if (value == null || value.equals("")) {
						continue;
					}
				}
				getInstance().setSimpleProperty(bean, name, value);
			} catch (NoSuchMethodException e) {
				continue;
			}
		}
	}

	/**
	 * 自动转Map key值大写 将Map内的key与Bean中属性相同的内容复制到BEAN中
	 * 
	 * @param bean
	 *            Object
	 * @param properties
	 *            Map
	 * @throws IllegalAccessException
	 * @throws InvocationTargetException
	 */
	public static void copyMap2Bean_Nobig(Object bean, Map properties)
			throws IllegalAccessException, InvocationTargetException {
		// Do nothing unless both arguments have been specified
		if ((bean == null) || (properties == null)) {
			return;
		}
		// Loop through the property name/value pairs to be set
		Iterator names = properties.keySet().iterator();
		while (names.hasNext()) {
			String name = (String) names.next();
			// Identify the property name and value(s) to be assigned
			if (name == null) {
				continue;
			}
			Object value = properties.get(name);
			// 命名应该大小写应该敏感(否则取不到对象的属性)
			// name = name.toLowerCase();
			try {
				if (value == null) { // 不光Date类型，好多类型在null时会出错
					continue; // 如果为null不用设 (对象如果有特殊初始值也可以保留？)
				}
				Class clazz = PropertyUtils.getPropertyType(bean, name);
				if (null == clazz) { // 在bean中这个属性不存在
					continue;
				}
				String className = clazz.getName();
				// 临时对策（如果不处理默认的类型转换时会出错）
				if (className.equalsIgnoreCase("java.util.Date")) {
					value = new java.util.Date(((java.sql.Timestamp) value).getTime());// wait
																						// to
																						// do：貌似有时区问题,
																						// 待进一步确认
				}
				// if (className.equalsIgnoreCase("java.sql.Timestamp")) {
				// if (value == null || value.equals("")) {
				// continue;
				// }
				// }
				getInstance().setSimpleProperty(bean, name, value);
			} catch (NoSuchMethodException e) {
				continue;
			}
		}
	}

	/**
	 * Map内的key与Bean中属性相同的内容复制到BEAN中 对于存在空值的取默认值
	 * 
	 * @param bean
	 *            Object
	 * @param properties
	 *            Map
	 * @param defaultValue
	 *            String
	 * @throws IllegalAccessException
	 * @throws InvocationTargetException
	 */
	public static void copyMap2Bean(Object bean, Map properties, String defaultValue)
			throws IllegalAccessException, InvocationTargetException {
		// Do nothing unless both arguments have been specified
		if ((bean == null) || (properties == null)) {
			return;
		}
		// Loop through the property name/value pairs to be set
		Iterator names = properties.keySet().iterator();
		while (names.hasNext()) {
			String name = (String) names.next();
			// Identify the property name and value(s) to be assigned
			if (name == null) {
				continue;
			}
			Object value = properties.get(name);
			try {
				Class clazz = PropertyUtils.getPropertyType(bean, name);
				if (null == clazz) {
					continue;
				}
				String className = clazz.getName();
				if (className.equalsIgnoreCase("java.sql.Timestamp")) {
					if (value == null || value.equals("")) {
						continue;
					}
				}
				if (className.equalsIgnoreCase("java.lang.String")) {
					if (value == null) {
						value = defaultValue;
					}
				}
				getInstance().setSimpleProperty(bean, name, value);
			} catch (NoSuchMethodException e) {
				continue;
			}
		}
	}

}