/**
    * Copyright 2004-2012 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.hr.time.roles.validation;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.hr.time.roles.TkRole;
  import org.kuali.hr.time.roles.TkRoleGroup;
  import org.kuali.hr.time.util.TkConstants;
  import org.kuali.rice.kns.document.MaintenanceDocument;
  import org.kuali.rice.kns.maintenance.rules.MaintenanceDocumentRuleBase;
  import org.kuali.rice.krad.bo.PersistableBusinessObject;
  
  public class TkRoleValidation extends MaintenanceDocumentRuleBase{
  
      private static final String ADD_LINE_LOCATION = "add.roles.";
  
      protected boolean validateTkRole(TkRole role, String fieldPrefix) {
          boolean valid = true;
  
          if (fieldPrefix == null)
              fieldPrefix = "";
  
         String rname = role.getRoleName();
         if (StringUtils.equalsIgnoreCase(rname, TkConstants.ROLE_TK_LOCATION_ADMIN) || StringUtils.equalsIgnoreCase(rname, TkConstants.ROLE_TK_LOCATION_VO)) {
      	   if (StringUtils.isBlank(role.getChart())) {
  	    	   this.putFieldError(fieldPrefix + "chart", "error.role.chart.required");
  	           valid = false;
      	   }
          } else {
          	if (!StringUtils.isBlank(role.getChart())) {
   	    	   this.putFieldError(fieldPrefix + "chart", "error.role.chart.disallowed");
   	           valid = false;
       	   }
          }
         
          return valid;
      }
  
      /**
       * Currently, the prefix will not work when the attributes of the collection
       * items are set to readOnlyAfterAdd. This seems to be a built in function
       * of rice. Errors will still appear but no marker will be placed next to
       * the field.
       */
      boolean validateTkRoleGroup(TkRoleGroup roleGroup) {
          boolean valid = true;
  
          int pos = 0;
          for (TkRole role: roleGroup.getRoles()) {
              StringBuffer prefix = new StringBuffer("roles[");
              prefix.append(pos).append("].");
              validateTkRole(role, prefix.toString());
              pos++;
          }
  
          return valid;
      }
  
  	@Override
  	protected boolean processCustomRouteDocumentBusinessRules(MaintenanceDocument document) {
  		boolean valid = true;
  
  		PersistableBusinessObject pbo = (PersistableBusinessObject) this.getNewBo();
  		if (pbo instanceof TkRole) {
  			TkRole role = (TkRole)pbo;
              valid = validateTkRole(role, null);
  		} else if (pbo instanceof TkRoleGroup) {
              TkRoleGroup roleGroup = (TkRoleGroup)pbo;
              valid = validateTkRoleGroup(roleGroup);
          }
  
  		return valid;
  	}
  
      @Override
      /**
       * Validation for the 'add' role in the collection manipulator.
       */
      public boolean processCustomAddCollectionLineBusinessRules(MaintenanceDocument document, String collectionName, PersistableBusinessObject line) {
          boolean valid = true;
  
          if (line instanceof TkRole) {
              TkRole role = (TkRole)line;
              valid = validateTkRole(role, ADD_LINE_LOCATION);
          }
  
         return valid;
     }
 }