/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  package org.apache.myfaces.tobago.el;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.faces.context.FacesContext;
  import java.security.Principal;
  import java.util.Collection;
  import java.util.Map;
  import java.util.Set;
  
  public class UserWrapper {
  
    private static final Logger LOG = LoggerFactory.getLogger(UserWrapper.class);
  
    private Map roles;
  
    public UserWrapper() {
      roles = new RolesMap();
    }
  
    public Principal getPrincipal() {
      FacesContext facesContext = FacesContext.getCurrentInstance();
      Principal principal = facesContext.getExternalContext().getUserPrincipal();
      if (LOG.isDebugEnabled()) {
        LOG.debug("getPrincipal(): {}", principal);
      }
      return principal;
    }
  
    public Map getRoles() {
      return roles;
    }
  
    private static class RolesMap implements Map {
  
      public Object get(Object key) {
        String role = (String) key;
        FacesContext facesContext = FacesContext.getCurrentInstance();
        boolean inRole = facesContext.getExternalContext().isUserInRole(role);
        if (LOG.isDebugEnabled()) {
          LOG.debug("is in role '{}': {}", key, inRole);
        }
        return Boolean.valueOf(inRole);
      }
  
      public int size() {
        throw new UnsupportedOperationException();
      }
  
      public void clear() {
        throw new UnsupportedOperationException();
      }
  
      public boolean isEmpty() {
        throw new UnsupportedOperationException();
      }
  
      public boolean containsKey(Object key) {
        throw new UnsupportedOperationException();
      }
  
      public boolean containsValue(Object value) {
        throw new UnsupportedOperationException();
      }
  
      public Collection values() {
        throw new UnsupportedOperationException();
      }
  
      public void putAll(Map t) {
        throw new UnsupportedOperationException();
      }
  
      public Set entrySet() {
        throw new UnsupportedOperationException();
      }
  
      public Set keySet() {
        throw new UnsupportedOperationException();
     }
 
     public Object remove(Object key) {
       throw new UnsupportedOperationException();
     }
 
     public Object put(Object key, Object value) {
       throw new UnsupportedOperationException();
     }
   }
 }