package no.javazone.submit.api.filters;

import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;

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

@Component
public class CORSFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain filterChain) throws IOException, ServletException {
        HttpServletResponse response = (HttpServletResponse) res;
        HttpServletRequest request = (HttpServletRequest) req;
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Methods", "GET,POST,PUT,DELETE");
        response.setHeader("Access-Control-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Credentials", "true");
        response.setHeader("Access-Control-Allow-Headers", "Origin,Accept,X-Requested-With,X-token,Content-Type,Access-Control-Request-Method,Access-Control-Request-Headers,Authorization");
        if (request.getMethod().equals(HttpMethod.OPTIONS.name())) {
            response.setStatus(HttpStatus.NO_CONTENT.value());
        } else {
            filterChain.doFilter(req, res);
        }
    }

    @Override
    public void destroy() {

    }
}
