package awb.aweb_soa.service.userOperationLog; 
import java.io.IOException;
import java.lang.reflect.Method;
import java.sql.Timestamp;
import java.util.List; 
import javax.servlet.http.HttpServletRequest;
import javax.sql.rowset.serial.SerialBlob;
 
import org.apache.commons.lang.WordUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
 
import cn.com.agree.aweb.asapi.ASAPI;
import edm.aweb_soa.aweb_soa.base.user.UserOperationLogDO;
import awb.aweb_soa.aservice.app.DefaultUser;
import awb.aweb_soa.global.annotation.UserOperationType;
  
@Service
@Aspect
public class UserOperationLogAspect {
	@Autowired
	UserOperationLog userOperationLog;
	/**
	 * 業(yè)務邏輯方法切入點，切所有service層的方法
	 */
	@Pointcut("execution(* awb.aweb_soa.service..*(..))")
	public void serviceCall() {
 
	}
	/**
	 * 用戶登錄
	 */
	@Pointcut("execution(* awb.aweb_soa.aservice.app.LoginController.signIn(..))")
	public void logInCall() {
 
	}
	/**
	 * 退出登出切入點
	 */
	@Pointcut("execution(* awb.aweb_soa.aservice.app.DefaultUser.logout(..))")
	public void logOutCall() {
 
	}
 
	/**
	 * 操作日志(后置通知)
	 * 
	 * @param joinPoint
	 * @param rtv
	 * @throws Throwable
	 */
	@AfterReturning(value = "serviceCall()", argNames = "rtv", returning = "rtv")
	public void doAfterReturning(JoinPoint joinPoint, Object rtv) throws Throwable {
		operationCall(joinPoint, rtv,"S");
	}
	/**
	 * 用戶登錄(后置通知)
	 * 
	 * @param joinPoint
	 * @param rtv
	 * @throws Throwable
	 */
	@AfterReturning(value = "logInCall()", argNames = "rtv", returning = "rtv")
	public void doLoginReturning(JoinPoint joinPoint, Object rtv) throws Throwable {
		operationCall(joinPoint, rtv,"S");
	}
	
	@Before(value = "logOutCall()")
	public void logoutCalls(JoinPoint joinPoint) throws Throwable {
		operationCall(joinPoint, null,"S");
	}
	/**
	 * 操作日志(異常通知)
	 * 
	 * @param joinPoint
	 * @param e
	 * @throws Throwable
	 */
	@AfterThrowing(value = "serviceCall()", throwing="e")
	public void doAfterThrowing(JoinPoint joinPoint, Object e) throws Throwable {
		operationCall(joinPoint, e,"F");
	}	
	/**
	 * 獲取用戶操作日志詳細信息
	 * 
	 * @param joinPoint
	 * @param rtv
	 * @param status
	 * @throws Throwable
	 */
	private void operationCall(JoinPoint joinPoint, Object rtv,String status)
			throws Throwable {
		//獲取當前用戶
		DefaultUser currentUser = (DefaultUser) ASAPI.authenticator().getCurrentUser();
		String userName = null;
		if (currentUser != null) {
			//獲取用戶名
			userName = currentUser.getUsername();
			//獲取用戶ip地址
			HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder
					.getRequestAttributes()).getRequest();
			String userIp = getIpAddress(request);
 
			// 拼接操作內容的字符串
			StringBuffer rs = new StringBuffer();
 
			// 獲取類名
			String className = joinPoint.getTarget().getClass()
					.getCanonicalName();
			rs.append("類名:" + className + "; </br>");
 
			// 獲取方法名
			String methodName = joinPoint.getSignature().getName();
			rs.append("方法名:" + methodName + "; </br>");
 
			// 獲取類的所有方法
			Method[] methods = joinPoint.getTarget().getClass()
					.getDeclaredMethods();
			//創(chuàng)建變量用于存儲注解返回的value值
			String operationType = "";
			for (Method method:methods) {
				String mName = method.getName();
				// 當切的方法和類中的方法相同時
				if (methodName.equals(mName)) {
					//獲取方法的UserOperationType注解
					UserOperationType userOperationType = 
							method.getAnnotation(UserOperationType.class);
					//如果方法存在UserOperationType注解時
					if (userOperationType!=null) {
						//獲取注解的value值
						operationType = userOperationType.value();
						
						// 獲取操作內容
						Object[] args = joinPoint.getArgs();
						int i = 1;
						if (args!=null&&args.length>0) {
							for (Object arg :args) {
								rs.append("[參數" + i + "======");
								userOptionContent(arg, rs);
								rs.append("]</br>");
							}
						}
						// 創(chuàng)建日志對象
						UserOperationLogDO log = new UserOperationLogDO();
						log.setLogId(ASAPI.randomizer().getRandomGUID());
						log.setUserCode(userName);
						log.setUserIP(userIp);
						log.setOperationDesc(new SerialBlob(rs.toString().getBytes("UTF-8")));
						log.setOperationType(operationType);
						log.setOperationTime(new Timestamp(System.currentTimeMillis()));
						log.setStatus(status);
						//日志對象入庫
						userOperationLog.insertLog(log);						
					}
				}
			}
		} 			
	}	
	/**
	 * 獲取請求主機IP地址,如果通過代理進來，則透過防火墻獲取真實IP地址;
	 * 
	 * @param request
	 * @return
	 * @throws IOException
	 */
	public final static String getIpAddress(HttpServletRequest request)
			throws IOException {
		// 獲取請求主機IP地址,如果通過代理進來，則透過防火墻獲取真實IP地址
 
		String ip = request.getHeader("X-Forwarded-For"); 
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			if (ip == null || ip.length() == 0
					|| "unknown".equalsIgnoreCase(ip)) {
				ip = request.getHeader("Proxy-Client-IP");
			}
			if (ip == null || ip.length() == 0
					|| "unknown".equalsIgnoreCase(ip)) {
				ip = request.getHeader("WL-Proxy-Client-IP");
			}
			if (ip == null || ip.length() == 0
					|| "unknown".equalsIgnoreCase(ip)) {
				ip = request.getHeader("HTTP_CLIENT_IP");
			}
			if (ip == null || ip.length() == 0
					|| "unknown".equalsIgnoreCase(ip)) {
				ip = request.getHeader("HTTP_X_FORWARDED_FOR");
			}
			if (ip == null || ip.length() == 0
					|| "unknown".equalsIgnoreCase(ip)) {
				ip = request.getRemoteAddr();
			}
		} else if (ip.length() > 15) {
			String[] ips = ip.split(",");
			for (int index = 0; index < ips.length; index++) {
				String strIp = (String) ips[index];
				if (!("unknown".equalsIgnoreCase(strIp))) {
					ip = strIp;
					break;
				}
			}
		}
		return ip;
	}
	/**
	 * 使用Java反射來獲取被攔截方法(insert、update, delete)的參數值， 將參數值拼接為操作內容
	 */
	@SuppressWarnings("unchecked")
	public StringBuffer userOptionContent(Object info, StringBuffer rs){
		String className = null;
		// 獲取參數對象類型
		className = info.getClass().getName();
		className = className.substring(className.lastIndexOf(".") + 1);
		rs.append("類型："+className+"，");
		
		//參數對象類型不是實體類或者集合時，直接顯示參數值
		if (className.equals("String")||className.equals("int")||className.equals("Date")
				||className.equals("Timestamp")||className.equals("Integer")
				||className.equals("B")||className.equals("Long")) {
			rs.append("值：(" + info + ")");
		}
		
		//參數類型是ArrayList集合，迭代里面的對象，并且遞歸
		if(className.equals("ArrayList")){
			int i = 1;
			//將參數對象轉換成List集合
			List<Object> list = (List<Object>) info;
			for (Object obj: list) {
				rs.append("</br>&nbsp;集合內容" + i + "————");
				//遞歸
				userOptionContent(obj, rs);
				rs.append("</br>");
				i++;
			}
		//參數對象是實體類
		}else{
			// 獲取對象的所有方法
			Method[] methods = info.getClass().getDeclaredMethods();
			//遍歷對象中的所有方法是否是get方法
			for (Method method : methods) {
				//獲取方法名字
				String methodName = method.getName();
				if (methodName.indexOf("get") == -1 || methodName.equals("getPassword")
						|| methodName.equals("getBytes")|| methodName.equals("getChars")
						|| methodName.equals("getLong") || methodName.equals("getInteger")
						|| methodName.equals("getTime") || methodName.equals("getCalendarDate")
						|| methodName.equals("getDay")  || methodName.equals("getMinutes")
						|| methodName.equals("getHours")|| methodName.equals("getSeconds")
						|| methodName.equals("getYear") || methodName.equals("getTimezoneOffset")
						|| methodName.equals("getDate") || methodName.equals("getJulianCalendar")
						|| methodName.equals("getMillisOf") || methodName.equals("getCalendarSystem")
						|| methodName.equals("getMonth")|| methodName.equals("getTimeImpl")
						|| methodName.equals("getNanos")) {  
					continue;
				}
				rs.append("</br>&nbsp;" + className + "——" + changeString(methodName) + ":");
				
				Object rsValue = null;
				try {
					// 調用get方法，獲取返回值
					rsValue = method.invoke(info);
					userOptionContent(rsValue, rs);
				} catch (Exception e) {
					continue;
				}
			}
		}
		return rs;
	}
	//有get方法獲得屬性名
	public String changeString(String name){
		name = name.substring(3);
		name = WordUtils.uncapitalize(name);//首字符小寫
		return name;
	}
}