/*
    * The Kuali Financial System, a comprehensive financial management system for higher education.
    * 
    * Copyright 2005-2014 The Kuali Foundation
    * 
    * This program is free software: you can redistribute it and/or modify
    * it under the terms of the GNU Affero General Public License as
    * published by the Free Software Foundation, either version 3 of the
    * License, or (at your option) any later version.
   * 
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU Affero General Public License for more details.
   * 
   * You should have received a copy of the GNU Affero General Public License
   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  package org.kuali.kfs.module.tem.document.validation.impl;
  
  import static org.kuali.kfs.module.tem.TemConstants.TravelParameters.PER_DIEM_CATEGORIES;
  
  import java.util.Collection;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.kfs.module.tem.TemConstants;
  import org.kuali.kfs.module.tem.TemKeyConstants;
  import org.kuali.kfs.module.tem.TemParameterConstants;
  import org.kuali.kfs.module.tem.businessobject.PerDiemExpense;
  import org.kuali.kfs.module.tem.document.TravelDocumentBase;
  import org.kuali.kfs.sys.context.SpringContext;
  import org.kuali.kfs.sys.document.validation.GenericValidation;
  import org.kuali.kfs.sys.document.validation.event.AttributedDocumentEvent;
  import org.kuali.rice.coreservice.framework.parameter.ParameterService;
  import org.kuali.rice.krad.util.GlobalVariables;
  
  public class TravelAuthTripDetailMileageRateValidation extends GenericValidation {
  
      //@Override
      @Override
      public boolean validate(AttributedDocumentEvent event) {
          boolean rulePassed = true;
          boolean showMileage = false;
  
          TravelDocumentBase document = (TravelDocumentBase) event.getDocument();
          //check to see if mileage=Y in PER_DIEM_CATEGORIES param
          ParameterService paramService = SpringContext.getBean(ParameterService.class);
          Collection<String> perDiemCats = paramService.getParameterValuesAsString(TemParameterConstants.TEM_DOCUMENT.class, PER_DIEM_CATEGORIES);
          for (String category : perDiemCats) {
              String[] pair = category.split("=");
              if (pair[0].equalsIgnoreCase(TemConstants.MILEAGE) && pair[1].equalsIgnoreCase(TemConstants.YES)) {
                  showMileage = true;
              }
          }
          if (showMileage) {
              for (PerDiemExpense estimate : document.getPerDiemExpenses()) {
                  if (StringUtils.isBlank(estimate.getMileageRateExpenseTypeCode())) {
                      GlobalVariables.getMessageMap().putError("document.perDiemExpenses", TemKeyConstants.ERROR_TA_NO_MILEAGE_RATE);
                      rulePassed = false;
                  }
              }
          }
  
          return rulePassed;
      }
  
  }