/*
    * Copyright 2007-2008 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.rules.ui;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.util.RiceKeyConstants;
  import org.kuali.rice.kim.api.KimConstants;
  import org.kuali.rice.kim.bo.ui.PersonDocumentGroup;
  import org.kuali.rice.kim.document.IdentityManagementPersonDocument;
  import org.kuali.rice.kim.rule.event.ui.AddGroupEvent;
  import org.kuali.rice.kim.rule.ui.AddGroupRule;
  import org.kuali.rice.krad.rules.DocumentRuleBase;
  import org.kuali.rice.krad.util.GlobalVariables;
  
  import java.util.HashMap;
  import java.util.Map;
  
  /**
   * This is a description of what this class does - shyu don't forget to fill this in. 
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   *
   */
  public class PersonDocumentGroupRule extends DocumentRuleBase implements AddGroupRule {
      protected static final String NEW_GROUP = "newGroup";
      protected static final String GROUP_ID_ERROR_PATH = NEW_GROUP+".groupId";
  
  	public boolean processAddGroup(AddGroupEvent addGroupEvent) {
  		IdentityManagementPersonDocument document = (IdentityManagementPersonDocument)addGroupEvent.getDocument();
  		PersonDocumentGroup newGroup = addGroupEvent.getGroup();
  	    boolean rulePassed = true;
  	    rulePassed = validAssignGroup(document, newGroup);
  //    	List<String> groupIds = KimImplServiceLocator.getUiDocumentService().getPopulatableGroupIds();
  
          if (newGroup == null || StringUtils.isBlank(newGroup.getGroupId())) {
              rulePassed = false;
              GlobalVariables.getMessageMap().putError(GROUP_ID_ERROR_PATH, RiceKeyConstants.ERROR_EMPTY_ENTRY, new String[] {"Group"});
          	
          } else {
  		    for (PersonDocumentGroup group : document.getGroups()) {
  		    	if (group.getGroupId().equals(newGroup.getGroupId())) {
  		            rulePassed = false;
  		            GlobalVariables.getMessageMap().putError(GROUP_ID_ERROR_PATH, RiceKeyConstants.ERROR_DUPLICATE_ENTRY, new String[] {"Group"});
  		    		
  		    	}
  		    }
          }
          
  //        if (rulePassed) {
  //        	if (groupIds.isEmpty() || !groupIds.contains(newGroup.getGroupId())) {
  //                errorMap.putError(errorPath+".groupId", RiceKeyConstants.ERROR_POPULATE_GROUP, new String[] {newGroup.getGroupId()});
  //                rulePassed = false;
  //        	}   
  //        }
          // check it before save ??
          //rulePassed &= validateActiveDate(newGroup.getActiveFromDate(), newGroup.getActiveToDate());
  		return rulePassed;
  	} 
  
  	protected boolean validAssignGroup(IdentityManagementPersonDocument document, PersonDocumentGroup newGroup){
          boolean rulePassed = true;
          Map<String,String> additionalPermissionDetails = new HashMap<String,String>();
          additionalPermissionDetails.put(KimConstants.AttributeConstants.NAMESPACE_CODE, newGroup.getNamespaceCode());
          additionalPermissionDetails.put(KimConstants.AttributeConstants.GROUP_NAME, newGroup.getGroupName());
  		if(!getDocumentHelperService().getDocumentAuthorizer(document).isAuthorizedByTemplate(
  				document, KimConstants.NAMESPACE_CODE, KimConstants.PermissionTemplateNames.POPULATE_GROUP,
  				GlobalVariables.getUserSession().getPrincipalId(), additionalPermissionDetails, null)){
      		GlobalVariables.getMessageMap().putError(GROUP_ID_ERROR_PATH, 
      				RiceKeyConstants.ERROR_ASSIGN_GROUP, 
      				new String[] {newGroup.getNamespaceCode(), newGroup.getGroupName()});
              rulePassed = false;
  		}
  		return rulePassed;
  	}
  	
  }