/**
 * The MIT License (MIT) * Copyright (c) 2020 铭软科技(mingsoft.net)
 * <p>
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 * <p>
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * <p>
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package net.mingsoft.basic.aop;

import com.mchange.v1.util.ArrayUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.RequestBody;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;

/**
 * 切面基础
 *
 * @author ms dev group
 * @version 版本号：100-000-000<br/>
 *          创建日期：2012-03-15<br/>
 *          历史修订：<br/>
 */
public abstract class BaseAop {
    /*
     * log4j日志记录
     */
    protected final Logger LOG = LoggerFactory.getLogger(this.getClass());

    /**
     * 获取切面中的class 类
     * @param jp 拦截对象
     * @param clazz class 类名
     * @param <T>
     * @return
     */
    protected final <T> T getType(JoinPoint jp, Class<T> clazz) {
        Object[] objs = jp.getArgs();
        for (Object obj : objs) {
            if (obj.getClass() == clazz) {
                return (T) obj;
            }
        }
        return null;
    }

    protected final <T> T getType(JoinPoint jp, Class<T> clazz, boolean hasParent) {
        Object[] objs = jp.getArgs();
        for (Object obj : objs) {
            if (obj.getClass() == clazz || obj.getClass().getSuperclass() == clazz) {
                return (T) obj;
            }
        }
        return null;
    }

    /**
     * 获取aop请求中所有请求参数
     * @param jp
     * @return
     */
    protected final Object getJsonParam(JoinPoint jp) {
        Signature signature = jp.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();
		Annotation[][] parameterAnnotations = method.getParameterAnnotations();
		for (Annotation[] parameterAnnotation : parameterAnnotations) {
            int paramIndex = ArrayUtils.indexOf(parameterAnnotations, parameterAnnotation);
            for (Annotation annotation : parameterAnnotation) {
                if (annotation instanceof RequestBody) {
                    return jp.getArgs()[paramIndex];
                }
            }
        }
        return null;
    }

    /**
     * 是否存在注解，如果存在就获取
     */
    protected final <T extends Annotation> T getAnnotation(JoinPoint jp, Class<T> an) {
        Signature signature = jp.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();

        if (method != null) {
            return method.getAnnotation(an);
        }
        return null;
    }
}