package com.gkhy.labRiskManage.config.interceptor;


import com.gkhy.labRiskManage.commons.enums.ResultCode;
import com.gkhy.labRiskManage.commons.exception.BusinessException;
import com.gkhy.labRiskManage.config.annotation.RepeatSubmit;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

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

/**
 * 防止器重复提交拦截
 *
 */
@Component
public abstract class RepeatSubmitInterceptor implements HandlerInterceptor
{
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception
    {
        if (handler instanceof HandlerMethod)
        {
            HandlerMethod handlerMethod = (HandlerMethod) handler;
            Method method = handlerMethod.getMethod();
            RepeatSubmit annotation = method.getAnnotation(RepeatSubmit.class);
            if (annotation != null)
            {
                if (this.isRepeatSubmit(request, annotation))
                {
                    //throw new RuntimeException(annotation.message());
                    throw new BusinessException(this.getClass(), ResultCode.BUSINESS_ERROR_NOT_ALLOWED.getCode(), annotation.message());

                }
            }
            return true;
        }
        else
        {
            return true;
        }
    }

    /**
     * 验证是否重复提交由子类实现具体的防重复提交的规则
     *
     * @param request 请求对象
     * @param annotation 防复注解
     * @return 结果
     */
    public abstract boolean isRepeatSubmit(HttpServletRequest request, RepeatSubmit annotation) throws Exception;
}