/*
    * 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.syncope.core.spring.security;
  
  import com.fasterxml.jackson.annotation.JsonCreator;
  import com.fasterxml.jackson.annotation.JsonIgnore;
  import com.fasterxml.jackson.annotation.JsonProperty;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.Set;
  import java.util.TreeSet;
  import org.apache.commons.lang3.builder.EqualsBuilder;
  import org.apache.commons.lang3.builder.HashCodeBuilder;
  import org.apache.commons.lang3.builder.ToStringBuilder;
  import org.apache.syncope.core.provisioning.api.utils.RealmUtils;
  import org.springframework.security.core.GrantedAuthority;
  
  public class SyncopeGrantedAuthority implements GrantedAuthority {
  
      private static final long serialVersionUID = -5647624636011919735L;
  
      @JsonProperty
      private final String entitlement;
  
      private final Set<String> realms = new TreeSet<>();
  
      @JsonCreator
      public SyncopeGrantedAuthority(@JsonProperty("entitlement") final String entitlement) {
          this.entitlement = entitlement;
      }
  
      public SyncopeGrantedAuthority(final String entitlement, final String realm) {
          this.entitlement = entitlement;
          this.realms.add(realm);
      }
  
      public boolean addRealm(final String newRealm) {
          return RealmUtils.normalizingAddTo(realms, newRealm);
      }
  
      public void addRealms(final Collection<String> newRealms) {
          newRealms.forEach(this::addRealm);
      }
  
      public Set<String> getRealms() {
          return Collections.unmodifiableSet(realms);
      }
  
      @JsonIgnore
      @Override
      public String getAuthority() {
          return entitlement;
      }
  
      @Override
      public int hashCode() {
          return new HashCodeBuilder().
                  append(entitlement).
                  append(realms).
                  build();
      }
  
      @Override
      public boolean equals(final Object obj) {
          if (this == obj) {
              return true;
          }
          if (obj == null) {
              return false;
          }
          if (getClass() != obj.getClass()) {
              return false;
          }
          final SyncopeGrantedAuthority other = (SyncopeGrantedAuthority) obj;
          return new EqualsBuilder().
                  append(entitlement, other.entitlement).
                  append(realms, other.realms).
                  build();
      }
  
      @Override
      public String toString() {
          return new ToStringBuilder(this).
                 append(entitlement).
                 append(realms).
                 build();
     }
 }