/*
    * 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.persistence.jpa.entity.group;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Optional;
  import javax.persistence.Cacheable;
  import javax.persistence.CascadeType;
  import javax.persistence.Column;
  import javax.persistence.Entity;
  import javax.persistence.FetchType;
  import javax.persistence.JoinColumn;
  import javax.persistence.JoinTable;
  import javax.persistence.ManyToMany;
  import javax.persistence.OneToMany;
  import javax.persistence.OneToOne;
  import javax.persistence.Table;
  import javax.persistence.UniqueConstraint;
  import javax.validation.Valid;
  import javax.validation.constraints.NotNull;
  import org.apache.syncope.core.persistence.api.dao.AnyTypeDAO;
  import org.apache.syncope.core.persistence.api.entity.AnyType;
  import org.apache.syncope.core.persistence.api.entity.AnyTypeClass;
  import org.apache.syncope.core.persistence.api.entity.ExternalResource;
  import org.apache.syncope.core.persistence.api.entity.anyobject.ADynGroupMembership;
  import org.apache.syncope.core.persistence.api.entity.group.GPlainAttr;
  import org.apache.syncope.core.persistence.api.entity.group.Group;
  import org.apache.syncope.core.persistence.api.entity.group.TypeExtension;
  import org.apache.syncope.core.persistence.api.entity.user.UDynGroupMembership;
  import org.apache.syncope.core.persistence.api.entity.user.User;
  import org.apache.syncope.core.persistence.jpa.entity.AbstractAny;
  import org.apache.syncope.core.persistence.jpa.entity.JPAAnyTypeClass;
  import org.apache.syncope.core.persistence.jpa.entity.JPAExternalResource;
  import org.apache.syncope.core.persistence.jpa.entity.anyobject.JPAADynGroupMembership;
  import org.apache.syncope.core.persistence.jpa.entity.user.JPAUDynGroupMembership;
  import org.apache.syncope.core.persistence.jpa.entity.user.JPAUser;
  import org.apache.syncope.core.persistence.jpa.validation.entity.GroupCheck;
  import org.apache.syncope.core.spring.ApplicationContextProvider;
  
  @Entity
  @Table(name = JPAGroup.TABLE)
  @Cacheable
  @GroupCheck
  public class JPAGroup extends AbstractAny<GPlainAttr> implements Group {
  
      private static final long serialVersionUID = -5281258853142421875L;
  
      public static final String TABLE = "SyncopeGroup";
  
      @Column(unique = true)
      @NotNull
      private String name;
  
      protected User userOwner;
  
      protected Group groupOwner;
  
      @OneToMany(cascade = CascadeType.ALL, orphanRemoval = true, mappedBy = "owner")
      @Valid
      private List<JPAGPlainAttr> plainAttrs = new ArrayList<>();
  
      @ManyToMany(fetch = FetchType.LAZY)
      @JoinTable(joinColumns =
              @JoinColumn(name = "group_id"),
              inverseJoinColumns =
              @JoinColumn(name = "resource_id"),
              uniqueConstraints = @UniqueConstraint(columnNames = { "group_id", "resource_id" }))
      private List<JPAExternalResource> resources = new ArrayList<>();
  
      @ManyToMany(fetch = FetchType.LAZY)
      @JoinTable(joinColumns =
              @JoinColumn(name = "group_id"),
              inverseJoinColumns =
              @JoinColumn(name = "anyTypeClass_id"),
              uniqueConstraints = @UniqueConstraint(columnNames = { "group_id", "anyTypeClass_id" }))
      private List<JPAAnyTypeClass> auxClasses = new ArrayList<>();
  
      @OneToOne(cascade = CascadeType.ALL, orphanRemoval = true, mappedBy = "group")
      @Valid
      private JPAUDynGroupMembership uDynMembership;
  
      @OneToMany(cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.EAGER, mappedBy = "group")
     private List<JPAADynGroupMembership> aDynMemberships = new ArrayList<>();
 
     @OneToMany(cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.EAGER, mappedBy = "group")
     private List<JPATypeExtension> typeExtensions = new ArrayList<>();
 
     @Override
     public String getName() {
         return name;
     }
 
     @Override
     public void setName(final String name) {
         this.name = name;
     }
 
     @Override
     public AnyType getType() {
         return ApplicationContextProvider.getBeanFactory().getBean(AnyTypeDAO.class).findGroup();
     }
 
     @Override
     public void setType(final AnyType type) {
         // nothing to do
     }
 
     @Override
     public boolean add(final ExternalResource resource) {
         checkType(resource, JPAExternalResource.class);
         return resources.contains((JPAExternalResource) resource) || resources.add((JPAExternalResource) resource);
     }
 
     @Override
     public List<? extends ExternalResource> getResources() {
         return resources;
     }
 
     @Override
     public User getUserOwner() {
         return userOwner;
     }
 
     @Override
     public void setUserOwner(final User userOwner) {
         checkType(userOwner, JPAUser.class);
         this.userOwner = (JPAUser) userOwner;
     }
 
     @Override
     public Group getGroupOwner() {
         return groupOwner;
     }
 
     @Override
     public void setGroupOwner(final Group group) {
         checkType(group, JPAGroup.class);
         this.groupOwner = (JPAGroup) group;
     }
 
     @Override
     public boolean add(final GPlainAttr attr) {
         checkType(attr, JPAGPlainAttr.class);
         return plainAttrs.add((JPAGPlainAttr) attr);
     }
 
     @Override
     public boolean remove(final GPlainAttr attr) {
         checkType(attr, JPAGPlainAttr.class);
         return getPlainAttrs().remove((JPAGPlainAttr) attr);
     }
 
     @Override
     public Optional<? extends GPlainAttr> getPlainAttr(final String plainSchema) {
         return getPlainAttrs().stream().filter(plainAttr
                 -> plainAttr != null && plainAttr.getSchema() != null
                 && plainSchema.equals(plainAttr.getSchema().getKey())).findFirst();
     }
 
     @Override
     public List<? extends GPlainAttr> getPlainAttrs() {
         return plainAttrs;
     }
 
     @Override
     public UDynGroupMembership getUDynMembership() {
         return uDynMembership;
     }
 
     @Override
     public void setUDynMembership(final UDynGroupMembership uDynMembership) {
         checkType(uDynMembership, JPAUDynGroupMembership.class);
         this.uDynMembership = (JPAUDynGroupMembership) uDynMembership;
     }
 
     @Override
     public boolean add(final AnyTypeClass auxClass) {
         checkType(auxClass, JPAAnyTypeClass.class);
         return auxClasses.contains((JPAAnyTypeClass) auxClass) || this.auxClasses.add((JPAAnyTypeClass) auxClass);
     }
 
     @Override
     public List<? extends AnyTypeClass> getAuxClasses() {
         return auxClasses;
     }
 
     @Override
     public boolean add(final ADynGroupMembership dynGroupMembership) {
         checkType(dynGroupMembership, JPAADynGroupMembership.class);
         return this.aDynMemberships.add((JPAADynGroupMembership) dynGroupMembership);
     }
 
     @Override
     public Optional<? extends ADynGroupMembership> getADynMembership(final AnyType anyType) {
         return aDynMemberships.stream().
                 filter(dynGroupMembership -> anyType != null && anyType.equals(dynGroupMembership.getAnyType())).
                 findFirst();
     }
 
     @Override
     public List<? extends ADynGroupMembership> getADynMemberships() {
         return aDynMemberships;
     }
 
     @Override
     public boolean add(final TypeExtension typeExtension) {
         checkType(typeExtension, JPATypeExtension.class);
         return this.typeExtensions.add((JPATypeExtension) typeExtension);
     }
 
     @Override
     public Optional<? extends TypeExtension> getTypeExtension(final AnyType anyType) {
         return typeExtensions.stream().
                 filter(typeExtension -> typeExtension.getAnyType().equals(anyType)).
                 findFirst();
     }
 
     @Override
     public List<? extends TypeExtension> getTypeExtensions() {
         return typeExtensions;
     }
 }