package org.oxerr.spring.security.guest.config.annotation.web.configurers;
   
   import org.oxerr.spring.security.guest.authentication.GuestAuthenticationProvider;
   import org.oxerr.spring.security.guest.core.userdetails.GuestUserDetailsService;
   import org.oxerr.spring.security.guest.web.authentication.GuestAuthenticationFilter;
   import org.springframework.security.config.annotation.web.HttpSecurityBuilder;
   import org.springframework.security.config.annotation.web.configurers.AbstractAuthenticationFilterConfigurer;
   import org.springframework.security.web.authentication.AnonymousAuthenticationFilter;
   import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
  import org.springframework.security.web.util.matcher.RequestMatcher;
  
  public final class GuestConfigurer<H extends HttpSecurityBuilder<H>>
  		extends AbstractAuthenticationFilterConfigurer<H, GuestConfigurer<H>, GuestAuthenticationFilter> {
  
  	private final GuestUserDetailsService guestUserDetailsService;
  
  	public GuestConfigurer(GuestUserDetailsService guestUserDetailsService) {
  		super(new GuestAuthenticationFilter(), "/");
  		this.guestUserDetailsService = guestUserDetailsService;
  	}
  
  	@Override
  	protected RequestMatcher createLoginProcessingUrlMatcher(String loginProcessingUrl) {
  		return new AntPathRequestMatcher("/");
  	}
  
  	@Override
  	public void init(H http) throws Exception {
  		super.init(http);
  
  		GuestAuthenticationProvider guestAuthenticationProvider = new GuestAuthenticationProvider(
  				guestUserDetailsService);
  		postProcess(guestAuthenticationProvider);
  		http.authenticationProvider(guestAuthenticationProvider);
  	}
  
  	@Override
  	public void configure(H http) throws Exception {
  
  		// Make sure the filter be registered in
  		// org.springframework.security.config.annotation.web.builders.FilterComparator
  		http.addFilterBefore(getAuthenticationFilter(), AnonymousAuthenticationFilter.class);
  
  		super.configure(http);
  	}
  
  }