package com.cool.store.config;


import cn.hutool.http.HttpStatus;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @Description 跨域配置
 * @author Aaron
 * @date 2020/1/9
 */
@Component
@Order(1)
public class CorsFilter implements Filter {

    @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
        HttpServletResponse response = (HttpServletResponse) res;
        HttpServletRequest reqs = (HttpServletRequest) req;
        response.setHeader("Access-Control-Allow-Origin",reqs.getHeader("Origin"));
        response.setHeader("Access-Control-Allow-Credentials", "true");
        response.setHeader("Access-Control-Allow-Methods", "POST, OPTIONS, GET, DELETE, PUT");
        response.setHeader("Access-Control-Max-Age", "36000");
        response.setHeader("Access-Control-Allow-Headers", "*");
        if (reqs.getMethod().equals("OPTIONS") || reqs.getMethod().equals("HEAD")) {
            response.setStatus(HttpStatus.HTTP_OK);
            return;
        }
        chain.doFilter(req, res);
    }


    @Override
    public void init(FilterConfig filterConfig) {
        //do nothing
    }


    @Override
    public void destroy() {
        //do nothing
    }

}