package com.walker.web.security;

import org.springframework.security.access.SecurityMetadataSource;
import org.springframework.security.access.intercept.AbstractSecurityInterceptor;
import org.springframework.security.access.intercept.InterceptorStatusToken;
import org.springframework.security.web.FilterInvocation;
import org.springframework.security.web.access.intercept.FilterInvocationSecurityMetadataSource;

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 java.io.IOException;

/**
 * 目前看不需要重写该对象，已废弃。
 * @date 2022-11-02
 */
@Deprecated
public class DefaultSecurityInterceptor extends AbstractSecurityInterceptor implements
        Filter {

    private FilterInvocationSecurityMetadataSource securityMetadataSource;

    @Override
    public void destroy() {

    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response,
                         FilterChain chain) throws IOException, ServletException {
        FilterInvocation fi = new  FilterInvocation(request, response, chain);
        invoke(fi);
    }

    @Override
    public void init(FilterConfig arg0) throws ServletException {

    }

    @Override
    public Class<?> getSecureObjectClass() {
        return FilterInvocation.class ;
    }

    @Override
    public SecurityMetadataSource obtainSecurityMetadataSource() {
        return this.securityMetadataSource;
    }

    private void invoke(FilterInvocation fi)  throws  IOException, ServletException {
        // object为FilterInvocation对象
        //super.beforeInvocation(fi);源码
        //1.获取请求资源的权限
        //执行Collection<ConfigAttribute> attributes = SecurityMetadataSource.getAttributes(object);
        //2.是否拥有权限
        //this.accessDecisionManager.decide(authenticated, object, attributes);
        InterceptorStatusToken token = super.beforeInvocation(fi);
        try  {
            fi.getChain().doFilter(fi.getRequest(), fi.getResponse());
        } finally  {
//            super.afterInvocation(token,  null );
            super.finallyInvocation(token);
        }
        super.afterInvocation(token, (Object)null);
    }

    public void setSecurityMetadataSource(FilterInvocationSecurityMetadataSource securityMetadataSource) {
        this.securityMetadataSource = securityMetadataSource;
    }

//    public void setMyAccessDecisionManager(CustomizeAccessDecisionManager accessDecisionManager) {
//        super.setAccessDecisionManager(accessDecisionManager);
//    }
}