package com.diagbot.config.security;

import org.springframework.security.access.AccessDecisionManager;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.authentication.InsufficientAuthenticationException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.web.FilterInvocation;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
import org.springframework.stereotype.Service;

import javax.servlet.http.HttpServletRequest;
import java.util.Collection;


/**
 * @Description: 自定义权限拦截
 * @author: gaodm
 * @time: 2018/8/23 13:46
 */
@Service
public class UrlAccessDecisionManager implements AccessDecisionManager {
    @Override
    public void decide(Authentication authentication, Object object, Collection<ConfigAttribute> configAttributes) throws AccessDeniedException, InsufficientAuthenticationException {
//        HttpServletRequest request = ((FilterInvocation) object).getHttpRequest();
//        String url, method;
//        if (matchPermitAllUrl(request)) {
//            return;
//        }
//        if ("anonymousUser".equals(authentication.getPrincipal())) {
//            throw new AccessDeniedException("no right");
//        } else {
//            for (GrantedAuthority ga : authentication.getAuthorities()) {
//                String[] authority = ga.getAuthority().split(";");
//                url = authority[0];
//                method = authority[1];
//                if (matchers(url, request)) {
//                    if (method.equals(request.getMethod()) || "ALL".equals(method)) {
//                        return;
//                    }
//                }
//            }
//        }
//        throw new AccessDeniedException("no right");
    }


    @Override
    public boolean supports(ConfigAttribute attribute) {
        return true;
    }

    @Override
    public boolean supports(Class<?> clazz) {
        return true;
    }

    private Boolean matchPermitAllUrl(HttpServletRequest request){
        if (matchers("/swagger/**", request)
                || matchers("/v2/**", request)
                || matchers("/swagger-ui.html/**", request)
                || matchers("/swagger-resources/**", request)
                || matchers("/webjars/**", request)
                || matchers("/druid/**", request)
                || matchers("/actuator/**", request)
                || matchers("/hystrix/**", request)
                || matchers("/", request)) {
            return true;
        }
        return false;
    }

    private boolean matchers(String url, HttpServletRequest request) {
        AntPathRequestMatcher matcher = new AntPathRequestMatcher(url);
        if (matcher.matches(request)) {
            return true;
        }
        return false;
    }
}
