package org.oxerr.spring.security.wechat.config.annotation.web.configurers;
   
   import org.oxerr.spring.security.wechat.authentication.WeChatAuthenticationProvider;
   import org.oxerr.spring.security.wechat.core.userdetails.WeChatUserDetailsService;
   import org.oxerr.spring.security.wechat.web.authentication.WeChatAuthenticationFilter;
   import org.oxerr.spring.security.wechat.web.authentication.WeChatService;
   import org.springframework.security.config.annotation.web.HttpSecurityBuilder;
   import org.springframework.security.config.annotation.web.configurers.AbstractAuthenticationFilterConfigurer;
   import org.springframework.security.web.authentication.logout.LogoutFilter;
  import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
  import org.springframework.security.web.util.matcher.RequestMatcher;
  
  public final class WeChatLoginConfigurer<H extends HttpSecurityBuilder<H>>
  		extends
  		AbstractAuthenticationFilterConfigurer<H, WeChatLoginConfigurer<H>,
  		WeChatAuthenticationFilter> {
  
  	private final WeChatUserDetailsService weChatUserDetailsService;
  
  	public WeChatLoginConfigurer(
  		WeChatService weChatService,
  		WeChatUserDetailsService weChatUserDetailsService
  	) {
  		super(new WeChatAuthenticationFilter(weChatService), "/login/wechat");
  		this.weChatUserDetailsService = weChatUserDetailsService;
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	@Override
  	public void configure(H http) throws Exception {
  
  		// Make sure the filter be registered in
  		// org.springframework.security.config.annotation.web.builders.FilterComparator
  		http.addFilterAfter(getAuthenticationFilter(), LogoutFilter.class);
  
  		super.configure(http);
  	}
  
  	@Override
  	public WeChatLoginConfigurer<H> loginPage(String loginPage) {
  		return super.loginPage(loginPage);
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	@Override
  	public void init(H http) throws Exception {
  		super.init(http);
  
  		WeChatAuthenticationProvider authenticationProvider = new WeChatAuthenticationProvider(weChatUserDetailsService);
  		postProcess(authenticationProvider);
  		http.authenticationProvider(authenticationProvider);
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	@Override
  	protected RequestMatcher createLoginProcessingUrlMatcher(
  			String loginProcessingUrl) {
  		return new AntPathRequestMatcher(loginProcessingUrl, "GET");
  	}
  
  }