package me.zhengjie.aspect;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
import lombok.extern.slf4j.Slf4j;
import me.zhengjie.utils.IpAddressUtil;
import org.apache.commons.lang3.StringUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.CodeSignature;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import java.util.Objects;

@Slf4j
@Aspect
@Component
public class LogRequestParam {

	@Pointcut("execution(* me.zhengjie.application.*.controller..*.*(..))")
	public void pointCut() {
	}

	public static boolean isJSON(String str) {
		boolean result = false;
		if (StringUtils.isNotBlank(str)) {
			str = str.trim();
			if (str.startsWith("{") && str.endsWith("}")) {
				result = true;
			} else if (str.startsWith("[") && str.endsWith("]")) {
				result = true;
			}
		}
		return result;
	}

	@Before(value = "pointCut()")
	public void doBefore(JoinPoint joinPoint) {
		ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes) RequestContextHolder
				.getRequestAttributes();
		if (Objects.isNull(servletRequestAttributes)) {
			return;
		}
		HttpServletRequest request = servletRequestAttributes.getRequest();
		// 得到请求的ip地址
		String ip = IpAddressUtil.getIpAddress(request);

		String uri = request.getRequestURI();
		// 请求方法
		String method = request.getMethod();
		Object error = "";
		try {
			Object[] parameterValues = joinPoint.getArgs();
			int parameterValuesLength = parameterValues.length;
			if (parameterValuesLength == 0) {
				log.debug("[请求参数] - 无");
				return;
			}
			Signature signature = joinPoint.getSignature();
			if (Objects.isNull(signature)) {
				return;
			}
			String[] parameterNames = ((CodeSignature) signature).getParameterNames();
			if (Objects.isNull(parameterNames) || parameterNames.length != parameterValuesLength) {
				return;
			}
			String paramJson = "";
			for (int i = 0; i < parameterNames.length; i++) {
				Object value = parameterValues[i];
				if (value == null || value instanceof HttpServletRequest || value instanceof HttpServletResponse) {
					continue;
				} else if (value instanceof MultipartFile) {
					MultipartFile part = (MultipartFile) value;
					paramJson = part.getOriginalFilename();
				} else if (value instanceof MultipartFile[]) {
					MultipartFile[] part = (MultipartFile[]) value;
					StringBuffer sb = new StringBuffer();
					for (MultipartFile file : part) {
						sb.append(file.getOriginalFilename() + ",");
					}
					paramJson = sb.toString();
				} else if (value instanceof String) {
					paramJson = (String) value;
					if (paramJson.length() > 1000) {
						// 去掉特别长的参数
						paramJson = paramJson.substring(0, 1000);
					}
				} else {
					// 处理参数是对象的值,如果出现异常，说明有文件流
					error = value;
					paramJson = JSON.toJSONString(value);
					// 先进行赋值
					// value = object;
					if (StringUtils.isNotBlank(paramJson) && paramJson.length() > 1000) {
						StringBuilder sb = new StringBuilder();
						// valLength = fieldValue.substring(0, 1000);
						sb.append(paramJson.substring(0, 1000));
						sb.append(paramJson.substring(paramJson.length() - 1000));
						paramJson = sb.toString();
					}
				}
			}

			// 这里判断
			Object[] obj = { ip, method, uri, paramJson };
			log.info("[request] - ip: {} , method: {} , requestUrl: {} , param: {} ", obj);
		} catch (Exception e) {
			// e.printStackTrace();
			// 这里判断
			Object[] obj = { ip, method, uri, error.toString() };
			log.info("[request] - ip: {} , method: {} , requestUrl: {} , param: {}, ", obj);

		}

	}

	@AfterReturning(returning = "result", pointcut = "pointCut() ")
	public void doAfterReturning(Object result) {
		try {
			ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes) RequestContextHolder
					.getRequestAttributes();
			if (Objects.isNull(servletRequestAttributes)) {
				return;
			}
			HttpServletResponse response = servletRequestAttributes.getResponse();
			if (Objects.isNull(response)) {
				return;
			}
			int status = response.getStatus();
			HttpServletRequest request = servletRequestAttributes.getRequest();
			String json = JSON.toJSONString(result, SerializerFeature.WriteMapNullValue);
			// 打印输出的值
			if (StringUtils.isNotBlank(json) && json.length() < 1500) {
				String uri = request.getRequestURI();
				String method = request.getMethod();
				Object obj[] = { status, method, uri, json };
				log.info("[reponse] - status: {} ,method:{}, url:{} ,result:{}", obj);
			}

		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}