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import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.oauth2.provider.token.store.redis.RedisTokenStore;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.session.HttpSessionEventPublisher;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;


@Configuration
@EnableWebSecurity
@Order(100)
public class WebSecurityConfiguration extends WebSecurityConfigurerAdapter {
	
   Logger logger = LoggerFactory.getLogger(getClass());

	@Autowired
	public SecurityUserService securityUserService;
	@Autowired
	private RedisConnectionFactory redisConnectionFactory;
	@Autowired
	private LoginAuthenticationFilter loginAuthenticationFilter;
	@Autowired
	private AuthenticationSuccessHandler authenticationSuccessHandler;

	@Bean
	public BCryptPasswordEncoder passwordEncoder() {
		return new BCryptPasswordEncoder();
	}

	@Bean
	public HttpSessionEventPublisher httpSessionEventPublisher() {
		return new HttpSessionEventPublisher();
	}

	@Bean
	public RedisTokenStore tokenStore() {
		RedisTokenStore rts = new RedisTokenStore(redisConnectionFactory);
		return rts;
	}

	@Override
	public void configure(WebSecurity web) throws Exception {
		// @formatter:off
		web.ignoring().antMatchers(
				"/**/favicon.ico", 
				"/webjars/**", 
				"/js/**", 
				"/css/**", 
				"/img/**", 
				"/dist/**",
				"/vendor/**", 
				"/services/**",
				"/api/**",
				"/esb/**"
				);
		// @formatter:on
	}

	@Override
	protected void configure(HttpSecurity http) throws Exception {
		http.headers().frameOptions().disable();
		// @formatter:off
		http.authorizeRequests().antMatchers(
				"/login", 
				"/code/image",
				"/api/**",
				"/esb/**"
				).permitAll().anyRequest().authenticated()
				.and()
				.addFilterBefore(loginAuthenticationFilter, UsernamePasswordAuthenticationFilter.class)
				.formLogin().loginPage("/login").successHandler ( authenticationSuccessHandler ).permitAll()
				.and().logout().logoutRequestMatcher(new AntPathRequestMatcher("/logout")).permitAll()
				.and().sessionManagement().maximumSessions(1).maxSessionsPreventsLogin(false)
				.expiredUrl("/login?expired");
		// @formatter:on
	}

	@Override
	protected void configure(AuthenticationManagerBuilder auth) throws Exception {
		auth.authenticationProvider(authenticationProvider());
	}

	@Bean
	@Override
	public AuthenticationManager authenticationManagerBean() throws Exception {
		return super.authenticationManagerBean();
	}

	@Bean
	public AuthenticationProvider authenticationProvider() {
		DaoAuthenticationProvider provider = new DaoAuthenticationProvider();
		provider.setHideUserNotFoundExceptions(false);
		provider.setUserDetailsService(securityUserService);
		provider.setPasswordEncoder(passwordEncoder());
		return provider;
	}

}