/**
    * Copyright 2005-2016 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.document;
  
  import org.apache.log4j.Logger;
  import org.kuali.rice.core.api.delegation.DelegationType;
  import org.kuali.rice.kim.api.KimConstants;
  import org.kuali.rice.kim.api.type.KimAttributeField;
  import org.kuali.rice.kim.bo.ui.RoleDocumentDelegation;
  import org.kuali.rice.kim.bo.ui.RoleDocumentDelegationMember;
  import org.kuali.rice.kim.impl.role.RoleBo;
  import org.kuali.rice.kim.impl.services.KimImplServiceLocator;
  import org.kuali.rice.krad.data.platform.MaxValueIncrementerFactory;
  import org.kuali.rice.krad.document.TransactionalDocumentBase;
  import org.springframework.jdbc.support.incrementer.DataFieldMaxValueIncrementer;
  import org.springframework.util.AutoPopulatingList;
  
  import javax.persistence.AttributeOverride;
  import javax.persistence.AttributeOverrides;
  import javax.persistence.CascadeType;
  import javax.persistence.Column;
  import javax.persistence.FetchType;
  import javax.persistence.JoinColumn;
  import javax.persistence.MappedSuperclass;
  import javax.persistence.OneToMany;
  import javax.persistence.Transient;
  import java.util.List;
  
  /**
   * This is a description of what this class does - bhargavp don't forget to fill this in. 
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   *
   */
  @MappedSuperclass
  @AttributeOverrides({
  	@AttributeOverride(name="documentNumber",column=@Column(name="FDOC_NBR"))
  })
  public class IdentityManagementKimDocument extends TransactionalDocumentBase {
  	private static final long serialVersionUID = 1L;
  
      protected static final Logger LOG = Logger.getLogger(IdentityManagementKimDocument.class);
  	
  	@OneToMany(targetEntity=RoleDocumentDelegation.class, fetch=FetchType.EAGER, cascade={CascadeType.ALL})
      @JoinColumn(name="FDOC_NBR",insertable=false,updatable=false)
  	protected List<RoleDocumentDelegation> delegations = new AutoPopulatingList<RoleDocumentDelegation>(RoleDocumentDelegation.class);
  	@Transient
  	protected List<RoleDocumentDelegationMember> delegationMembers = new AutoPopulatingList<RoleDocumentDelegationMember>(RoleDocumentDelegationMember.class);
  	
  	protected void addDelegationMemberToDelegation(RoleDocumentDelegationMember delegationMember){
  		// the statement below will lazily load the RoleBo onto our delegation member so that we have access to i
  		delegationMember.loadTransientRoleFields();
  		// now that we've done that we can fetch the RoleBo
  		RoleBo role = delegationMember.getRoleBo();
  		RoleDocumentDelegation delegation;
  		if (DelegationType.PRIMARY.getCode().equals(delegationMember.getDelegationTypeCode())) {
  			delegation = getPrimaryDelegation(role);
  			// if the delegation type was changed on the document, we need to make sure we remove the member from the secondary delegation
  			getSecondaryDelegation(role).getMembers().remove(delegationMember);
  		} else {
  			delegation = getSecondaryDelegation(role);
  			// if the delegation type was changed on the document, we need to make sure we remove the member from the primary delegation
  			getPrimaryDelegation(role).getMembers().remove(delegationMember);
  		}
  		delegationMember.setDelegationId(delegation.getDelegationId());
  		if (!delegation.getMembers().contains(delegationMember)) {
  			delegation.getMembers().add(delegationMember);
  		}
  	}
  
  	protected RoleDocumentDelegation getPrimaryDelegation(RoleBo role) {
  		RoleDocumentDelegation primaryDelegation = null;
  		for(RoleDocumentDelegation delegation: getDelegations()){
  			if(role.getId().equals(delegation.getRoleId()) && delegation.isDelegationPrimary()) {
  				primaryDelegation = delegation;
  				break;
              }
  		}
  		if(primaryDelegation == null) {
  			primaryDelegation = new RoleDocumentDelegation();
  			primaryDelegation.setRoleId(role.getId());
  			primaryDelegation.setKimTypeId(role.getKimTypeId());
  			primaryDelegation.setDelegationId(getDelegationId());
  			primaryDelegation.setDelegationTypeCode(DelegationType.PRIMARY.getCode());
              primaryDelegation.setDocumentNumber(getDocumentNumber());
  			getDelegations().add(primaryDelegation);
 		}
 		return primaryDelegation;
 	}
 
 	protected String getDelegationId(){
         DataFieldMaxValueIncrementer incrementer = MaxValueIncrementerFactory.getIncrementer(KimImplServiceLocator.getDataSource(), KimConstants.SequenceNames.KRIM_DLGN_ID_S);
         return incrementer.nextStringValue();
 	}
 	
 	protected RoleDocumentDelegation getSecondaryDelegation(RoleBo role) {
 		RoleDocumentDelegation secondaryDelegation = null;
 		for (RoleDocumentDelegation delegation: getDelegations()) {
 			if (role.getId().equals(delegation.getRoleId()) && delegation.isDelegationSecondary()) {
 				secondaryDelegation = delegation;
 				break;
             }
 		}
 		if(secondaryDelegation == null) {
 			secondaryDelegation = new RoleDocumentDelegation();
 			secondaryDelegation.setRoleId(role.getId());
 			secondaryDelegation.setKimTypeId(role.getKimTypeId());
 			secondaryDelegation.setDelegationId(getDelegationId());
 			secondaryDelegation.setDelegationTypeCode(DelegationType.SECONDARY.getCode());
             secondaryDelegation.setDocumentNumber(getDocumentNumber());
 			getDelegations().add(secondaryDelegation);
 		}
 		return secondaryDelegation;
 	}
 
 	public List<RoleDocumentDelegation> getDelegations() {
 		return this.delegations;
 	}
 
 	public void setDelegations(List<RoleDocumentDelegation> delegations) {
 		this.delegations = delegations;
 	}
 
 	public List<RoleDocumentDelegationMember> getDelegationMembers() {
 		return this.delegationMembers;
 	}
 
 	public void setDelegationMembers(
 			List<RoleDocumentDelegationMember> delegationMembers) {
 		this.delegationMembers = delegationMembers;
 	}
 
     public String getKimAttributeDefnId(KimAttributeField definition){
    		return definition.getId();
     }
 
 }