/*

  * Copyright 2006-2011 The Kuali Foundation

  *

  * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php

  *

  * 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.kuali.rice.kim.api.group;

 import org.apache.commons.collections.CollectionUtils;

 import org.apache.commons.lang.StringUtils;

 import org.apache.commons.lang.builder.EqualsBuilder;

 import org.apache.commons.lang.builder.HashCodeBuilder;

 import org.apache.commons.lang.builder.ToStringBuilder;

 import org.kuali.rice.core.api.CoreConstants;

 import org.kuali.rice.core.api.mo.ModelBuilder;

 import org.kuali.rice.core.api.mo.ModelObjectComplete;

 import org.kuali.rice.kim.api.person.Person;

 import org.w3c.dom.Element;

 import javax.xml.bind.annotation.XmlAccessType;

 import javax.xml.bind.annotation.XmlAccessorType;

 import javax.xml.bind.annotation.XmlAnyElement;

 import javax.xml.bind.annotation.XmlElement;

 import javax.xml.bind.annotation.XmlRootElement;

 import javax.xml.bind.annotation.XmlType;

 import java.io.Serializable;

 import java.util.ArrayList;

 import java.util.Collection;

 import java.util.Collections;

 import java.util.HashSet;

 import java.util.List;

 import java.util.Set;

 @XmlRootElement(name = Group.Constants.ROOT_ELEMENT_NAME)

 @XmlAccessorType(XmlAccessType.NONE)

 @XmlType(name = Group.Constants.TYPE_NAME, propOrder = {

         Group.Elements.ID,

         Group.Elements.NAMESPACE_CODE,

         Group.Elements.NAME,

         Group.Elements.DESCRIPTION,

         Group.Elements.KIM_TYPE_ID,

         Group.Elements.MEMBERS,

         Group.Elements.ATTRIBUTES,

         Group.Elements.ACTIVE,

         CoreConstants.CommonElements.VERSION_NUMBER,

         CoreConstants.CommonElements.OBJECT_ID,

         CoreConstants.CommonElements.FUTURE_ELEMENTS

 })

 public final class Group implements GroupContract, ModelObjectComplete {

     @XmlElement(name = Elements.ID, required = true)

     private final String id;

     @XmlElement(name = Elements.NAMESPACE_CODE, required = true)

     private final String namespaceCode;

     @XmlElement(name = Elements.NAME, required = true)

     private final String name;

     @XmlElement(name = Elements.DESCRIPTION, required = false)

     private final String description;

     @XmlElement(name = Elements.KIM_TYPE_ID, required = true)

     private final String kimTypeId;

     @XmlElement(name = Elements.MEMBERS, required = false)

     private final List<GroupMember> members;

     @XmlElement(name = Elements.ATTRIBUTES, required = false)

     private final List<GroupAttribute> attributes;

     @XmlElement(name = Elements.ACTIVE, required = false)

     private final boolean active;

     @XmlElement(name = CoreConstants.CommonElements.VERSION_NUMBER, required = false)

     private final Long versionNumber;

     @XmlElement(name = CoreConstants.CommonElements.OBJECT_ID, required = false)

     private final String objectId;

     @SuppressWarnings("unused")

     @XmlAnyElement

     private final Collection<Element> _futureElements = null;

     private Group() {

         this.id = null;

         this.namespaceCode = null;

         this.name = null;

         this.description = null;

         this.kimTypeId = null;

         this.members = null;

         this.attributes = null;

         this.versionNumber = null;

         this.objectId = null;

         this.active = false;

     }

     public Group(Builder builder) {

         id = builder.getId();

         namespaceCode = builder.getNamespaceCode();

         name = builder.getName();

         description = builder.getDescription();

         kimTypeId = builder.getKimTypeId();

         members = new ArrayList<GroupMember>();

         if (!CollectionUtils.isEmpty(builder.getMembers())) {

             for (GroupMember.Builder member : builder.getMembers()) {

                 members.add(member.build());

             }

         }

         attributes = new ArrayList<GroupAttribute>();

         if (!CollectionUtils.isEmpty(builder.getAttributes())) {

             for (GroupAttribute.Builder attribute : builder.getAttributes()) {

                 attributes.add(attribute.build());

             }

         }

         versionNumber = builder.getVersionNumber();

         objectId = builder.getObjectId();

         active = builder.isActive();

     }

     /**

      * This builder constructs an Group enforcing the constraints of the {@link org.kuali.rice.kim.api.group.GroupContract}.

      */

     public static class Builder implements GroupContract, ModelBuilder, Serializable {

         private String id;

         private String namespaceCode;

         private String name;

         private String description;

         private String kimTypeId;

         private List<GroupMember.Builder> members;

         private List<GroupAttribute.Builder> attributes;

         private boolean active;

         private Long versionNumber;

         private String objectId;

         private Builder(String id, String namespaceCode, String name, String kimTypeId) {

             setId(id);

             setNamespaceCode(namespaceCode);

             setName(name);

             setKimTypeId(kimTypeId);

         }

         /**

          * creates a Parameter with the required fields.

          */

         public static Builder create(String id, String namespaceCode, String name, String kimTypeId) {

             return new Builder(id, namespaceCode, name, kimTypeId);

         }

         /**

          * creates a Parameter from an existing {@link org.kuali.rice.core.api.parameter.ParameterContract}.

          */

         public static Builder create(GroupContract contract) {

             Builder builder = new Builder(contract.getId(), contract.getNamespaceCode(), contract.getName(), contract.getKimTypeId());

             builder.setDescription(contract.getDescription());

             List<GroupMember.Builder> groupMemberBuilders = new ArrayList<GroupMember.Builder>();

             for (GroupMemberContract memberContract : contract.getMembers()) {

                 GroupMember.Builder memberBuilder = GroupMember.Builder.create(memberContract);

                 groupMemberBuilders.add(memberBuilder);

             }

             builder.setMembers(groupMemberBuilders);

             List<GroupAttribute.Builder> groupAttributeBuilders = new ArrayList<GroupAttribute.Builder>();

             for (GroupAttributeContract attributeContract : contract.getAttributes()) {

                 GroupAttribute.Builder attributeBuilder = GroupAttribute.Builder.create(attributeContract);

                 groupAttributeBuilders.add(attributeBuilder);

             }

             builder.setAttributes(groupAttributeBuilders);

             builder.setActive(contract.isActive());

             builder.setVersionNumber(contract.getVersionNumber());

             builder.setObjectId(contract.getObjectId());

             return builder;

         }

         @Override

         public String getId() {

             return id;

         }

         public void setId(String id) {

             if (StringUtils.isEmpty(id)) {

                 throw new IllegalArgumentException("id is blank");

             }

             this.id = id;

         }

         @Override

         public String getNamespaceCode() {

             return namespaceCode;

         }

         public void setNamespaceCode(String namespaceCode) {

             if (StringUtils.isEmpty(namespaceCode)) {

                 throw new IllegalArgumentException("namespaceCode is blank");

             }

             this.namespaceCode = namespaceCode;

         }

         @Override

         public String getName() {

             return name;

         }

         public void setName(String name) {

             if (StringUtils.isEmpty(name)) {

                 throw new IllegalArgumentException("name is blank");

             }

             this.name = name;

         }

         @Override

         public String getDescription() {

             return description;

         }

         public void setDescription(String description) {

             this.description = description;

         }

         @Override

         public String getKimTypeId() {

             return kimTypeId;

         }

         public void setKimTypeId(String kimTypeId) {

             if (StringUtils.isEmpty(kimTypeId)) {

                 throw new IllegalArgumentException("kimTypeId is blank");

             }

             this.kimTypeId = kimTypeId;

         }

         @Override

         public List<GroupMember.Builder> getMembers() {

             return members;

         }

         public void setMembers(List<GroupMember.Builder> members) {

             this.members = members;

         }

         //@Override

         public List<Person> getPersonMembers() {

             return null;

         }

         //@Override

         public List<Group> getGroupMembers() {

             return null;

         }

         @Override

         public List<GroupAttribute.Builder> getAttributes() {

             return attributes;

         }

         public void setAttributes(List<GroupAttribute.Builder> attributes) {

             this.attributes = attributes;

         }

         @Override

         public boolean isActive() {

             return active;

         }

         public void setActive(boolean active) {

             this.active = active;

         }

         @Override

         public Long getVersionNumber() {

             return versionNumber;

         }

         public void setVersionNumber(Long versionNumber) {

             this.versionNumber = versionNumber;

         }

         @Override

         public String getObjectId() {

             return objectId;

         }

         public void setObjectId(String objectId) {

             this.objectId = objectId;

         }

         @Override

         public Group build() {

             return new Group(this);

         }

     }

     @Override

     public int hashCode() {

         return HashCodeBuilder.reflectionHashCode(this, Constants.HASH_CODE_EQUALS_EXCLUDE);

     }

     @Override

     public boolean equals(Object obj) {

         return EqualsBuilder.reflectionEquals(obj, this, Constants.HASH_CODE_EQUALS_EXCLUDE);

     }

     @Override

     public String toString() {

         return ToStringBuilder.reflectionToString(this);

     }

     @Override

     public String getId() {

         return id;

     }

     @Override

     public String getNamespaceCode() {

         return namespaceCode;

     }

     @Override

     public String getName() {

         return name;

     }

     @Override

     public String getDescription() {

         return description;

     }

     @Override

     public String getKimTypeId() {

         return kimTypeId;

     }

     @Override

     public List<GroupMember> getMembers() {

         return Collections.unmodifiableList(members);

     }

     //@Override

     public List<Person> getPersonMembers() {

         List<Person> personMembers = new ArrayList();

         for (GroupMember member : members) {

             //todo if member is person

             /*if (true) {

                 personMembers.add(Service.toPerson(member));

             }*/

         }

         return Collections.unmodifiableList(personMembers);

     }

     //@Override

     public List<Group> getGroupMembers() {

         List groupMembers = new ArrayList();

         for (GroupMember member : members) {

             //todo if member is group

             /*if (true) {

                 groupMembers.add(member);

             }*/

         }

         return Collections.unmodifiableList(groupMembers);

     }

     @Override

     public List<GroupAttribute> getAttributes() {

         return attributes;

     }

     @Override

     public boolean isActive() {

         return active;

     }

     @Override

     public Long getVersionNumber() {

         return versionNumber;

     }

     @Override

     public String getObjectId() {

         return objectId;

     }

     /**

      * Defines some internal constants used on this class.

      */

     static class Constants {

         final static String ROOT_ELEMENT_NAME = "group";

         final static String TYPE_NAME = "GroupType";

         final static String[] HASH_CODE_EQUALS_EXCLUDE = {CoreConstants.CommonElements.FUTURE_ELEMENTS};

     }

     /**

      * A private class which exposes constants which define the XML element names to use

      * when this object is marshalled to XML.

      */

     static class Elements {

         final static String ID = "id";

         final static String NAMESPACE_CODE = "namespaceCode";

         final static String NAME = "name";

         final static String DESCRIPTION = "description";

         final static String KIM_TYPE_ID = "kimTypeId";

         final static String ATTRIBUTES = "attributes";

         final static String MEMBERS = "members";

         final static String ACTIVE = "active";

     }

 }