package fr.paris.lutece.plugins.mylutece.service;
   
   import java.util.Collection;
   import java.util.HashSet;
   import java.util.List;
   import java.util.Set;
   
   import fr.paris.lutece.portal.service.security.LuteceUser;
   import fr.paris.lutece.portal.service.spring.SpringContextService;
  
  
  /**
   * The Class MyluteceExternalRoleService.
   */
  public class MyluteceExternalRoleService implements IMyluteceExternalRoleService{
  
  	
       /** The Constant BEAN_MY_LUTECE_ROLE_SERVICE. */
       private static final String BEAN_MY_LUTECE_ROLE_SERVICE = "mylutece.myLuteceExternalRoleService";
  	 
   	/** The singleton. */
   	private static volatile IMyluteceExternalRoleService  _singleton;
  	 
  	 
  	 
  	 
  	 /**
   	 * Get the instance of the MyLuteceExternalIdentityService service.
   	 *
   	 * @return the instance of the MyLuteceExternalIdentityService service
   	 */
  	    public static IMyluteceExternalRoleService getInstance( )
  	    {
  	        if ( _singleton == null )
  	        {
  	            synchronized( IMyluteceExternalRoleService.class )
  	            {
  	            	IMyluteceExternalRoleService service = SpringContextService.getBean( BEAN_MY_LUTECE_ROLE_SERVICE );
  	                _singleton = service;
  	                
  	            }
  	        }
  
  	        return _singleton;
  	    }
  	/**
       * {@inheritDoc}
       */
  	@Override
  	public Collection<String> providesRoles(LuteceUser user) {
  	    // Get the external roles
          Set<String> listRoles = new HashSet<>( );
          for ( IMyLuteceExternalRolesProvider roleProvider : getProviders() )
          {
              listRoles.addAll( roleProvider.providesRoles( user ) );
          }
          
          return listRoles;
  	}
  
  	/**
       * {@inheritDoc}
       */
  	@Override
  	public List<IMyLuteceExternalRolesProvider> getProviders() {
  
  		return SpringContextService.getBeansOfType( IMyLuteceExternalRolesProvider.class );
  	}
  
  	
  
  }