package com.jadyer.seed.comm.annotation.log;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.jadyer.seed.comm.annotation.SeedLog;
import com.jadyer.seed.comm.util.JadyerUtil;
import com.jadyer.seed.comm.util.LogUtil;
import com.jadyer.seed.comm.util.RequestUtil;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.http.ResponseEntity;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;

/**
 * 日志记录切面器
 * <ul>
 *     <li>
 *         Around("execution(* com.jadyer.seed..*Controller.*(..))")<br/>
 *         测试发现Controller中只要有一个方法是public则其所有方法都会被切，当所有方法都不是public时才都不会被切
 *     </li>
 *     <li>
 *         Around("execution(public * com.jadyer.seed..*Controller.*(..))")<br/>
 *         此时就只会切public的方法，而不会受其它方法修饰符的影响，推荐使用
 *     </li>
 * </ul>
 * Created by 玄玉<https://jadyer.cn/> on 2015/8/18 9:49.
 */
//@Aspect
//@Component
public class LogAspectOld {
    //@Around("execution(public * com.jadyer.seed..*Controller.*(..)) or execution(public * com.xuanyu..*Controller.*(..))")
    //@Around("execution(public * com.jadyer.seed..*Controller.*(..))")
    public Object log(ProceedingJoinPoint joinPoint) throws Throwable {
        Object respData;
        long startTime = System.currentTimeMillis();
        String className = joinPoint.getTarget().getClass().getSimpleName(); //获取类名（这里只切面了Controller类）
        String methodName = joinPoint.getSignature().getName();              //获取方法名
        String methodInfo = className + "." + methodName;                    //组织类名.方法名
        //Object[] objs = joinPoint.getArgs();                               //获取方法参数
        //String paramInfo = com.alibaba.fastjson.JSON.toJSONString(args);
        /*
        if(RouterController.class.getSimpleName().equals(className)){
            return joinPoint.proceed();
        }
        */
        /*
         * 打印Controller入参
         * 1.也可以使用@Resource注入private HttpServletRequest request;再加上setRequest()即可
         *   当使用@Resource注入HttpServletRequest时，在JUnit中通过new ClassPathXmlApplicationContext("applicationContext.xml")加载Spring时会报告下面的异常
         *   org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.servlet.http.HttpServletRequest] found for dependency
         *   所以这里通过RequestContextHolder来获取HttpServletRequest
         * 2.当上传文件时，由于表单设置了enctype="multipart/form-data"，会将表单用其它的文本域与file域一起作为流提交
         *   所以此时request.getParameter()是无法获取到表单中的文本域的，这时可以借助文件上传组件来获取比如org.apache.commons.fileupload.FileItem
         * 3.RabbitMQ订阅过来的消息时，这里得到的servletRequestAttributes==null，所以加了一个判断
         */
        ServletRequestAttributes attributes = (ServletRequestAttributes)RequestContextHolder.getRequestAttributes();
        if(null == attributes){
            return joinPoint.proceed();
        }
        HttpServletRequest request = attributes.getRequest();
        LogUtil.getLogger().info("{}()-->{}被调用，客户端IP={}，入参为[{}]", methodInfo, request.getRequestURI(), RequestUtil.getClientIP(request), JadyerUtil.buildStringFromMap(request.getParameterMap()));
        /*
         * 使用自定义注解
         */
        Method method = ((MethodSignature)joinPoint.getSignature()).getMethod();
        if(method.isAnnotationPresent(SeedLog.class)){
            SeedLog seedLog = method.getAnnotation(SeedLog.class);
            String logData = "动作：" + seedLog.action().getCode() + "（" + seedLog.action().getMsg() +"）" + "，描述：" + seedLog.value();
            LogUtil.getLogger().info("{}()-->{}被调用，客户端IP={}，Log注解为[{}]", methodInfo, request.getRequestURI(), RequestUtil.getClientIP(request), logData);
        }
        /*
         * 表单验证
         */
        //Object[] objs = joinPoint.getArgs();
        //for (Object obj : objs) {
        //    if (null != obj && obj.getClass().getName().startsWith("com.jadyer.seed.ucs")) {
        //        LogUtil.getLogger().info("{}()-->{}被调用, 客户端IP={}, 得到的表单参数为{}", methodInfo, request.getRequestURI(), IPUtil.getClientIP(request), ReflectionToStringBuilder.toString(obj, ToStringStyle.MULTI_LINE_STYLE));
        //        String validateResult = ValidatorUtil.validate(obj);
        //        LogUtil.getLogger().info("{}()-->{}的表单-->{}", methodInfo, request.getRequestURI(), StringUtils.isBlank(validateResult)?"验证通过":"验证未通过");
        //        if (StringUtils.isNotBlank(validateResult)) {
        //            throw new SeedException(CodeEnum.SYSTEM_BUSY.getCode(), validateResult);
        //        }
        //    }
        //}
        /*
         * 执行Controller的方法
         */
        respData = joinPoint.proceed();
        long endTime = System.currentTimeMillis();
        String returnInfo;
        if(null!=respData && respData.getClass().isAssignableFrom(ResponseEntity.class)){
            returnInfo = "ResponseEntity";
        }else{
            //出参就不再格式化输出了，因为通常接口返回的都是实体类，类属性很多，很占面积，影响查日志
            //returnInfo = JSON.toJSONStringWithDateFormat(respData, JSON.DEFFAULT_DATE_FORMAT, SerializerFeature.PrettyFormat, SerializerFeature.WriteMapNullValue, SerializerFeature.WriteNullStringAsEmpty, SerializerFeature.WriteNullNumberAsZero, SerializerFeature.WriteNullListAsEmpty, SerializerFeature.WriteNullBooleanAsFalse);
            returnInfo = JSON.toJSONStringWithDateFormat(respData, JSON.DEFFAULT_DATE_FORMAT, SerializerFeature.WriteMapNullValue, SerializerFeature.WriteNullStringAsEmpty, SerializerFeature.WriteNullNumberAsZero, SerializerFeature.WriteNullListAsEmpty, SerializerFeature.WriteNullBooleanAsFalse);
        }
        LogUtil.getLogger().info("{}()-->{}被调用，出参为[{}]，Duration[{}]ms", methodInfo, request.getRequestURI(), returnInfo, endTime-startTime);
        LogUtil.getLogger().info("---------------------------------------------------------------------------------------------");
        //注意這里一定要原封不动的返回joinPoint.proceed()结果，若返回JSON.toJSONString(respData)则会报告下面的异常
        //java.lang.String cannot be cast to com.jadyer.seed.comm.constant.CommResult
        //这是由于JSON.toJSONString(respData)得到的是字符串，而实际Controller方法里面返回的是CommResult对象
        return respData;
    }
}