package org.marsik.elshelves.backend.app.servlet;

import org.springframework.stereotype.Component;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Component
public class CORSFilter implements Filter {

    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
        HttpServletResponse response = (HttpServletResponse) res;
        if (req instanceof HttpServletRequest) {
            String url = ((HttpServletRequest) req).getRequestURI();

            if (url.startsWith("/v1/")) {
                response.setHeader("Access-Control-Allow-Origin", "*");
                response.setHeader("Access-Control-Allow-Methods", "POST, GET, PATCH, PUT, OPTIONS, DELETE");
                response.setHeader("Access-Control-Max-Age", "3600");
                response.setHeader("Access-Control-Allow-Headers",
                        "x-requested-with, origin, authorization, accept, content-type");
            }
        }
        chain.doFilter(req, res);
    }

    public void init(FilterConfig filterConfig) {}

    public void destroy() {}

}

@@ -831,16 +831,44 @@
 (%22/v1/%22)
+ %7C%7C url.startsWith(%22/info/%22)
 ) %7B%0A    

Allow CORS access to the /info/ endpoint