/*
    * Copyright 2007 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.ole.sys.businessobject.options;
  
  import java.sql.Date;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.ole.coa.businessobject.AccountingPeriod;
  import org.kuali.ole.coa.service.AccountingPeriodService;
  import org.kuali.ole.sys.OLEConstants;
  import org.kuali.ole.sys.context.SpringContext;
  import org.kuali.ole.sys.service.impl.OleParameterConstants;
  import org.kuali.rice.core.api.datetime.DateTimeService;
  import org.kuali.rice.core.api.util.ConcreteKeyValue;
  import org.kuali.rice.coreservice.framework.parameter.ParameterService;
  import org.kuali.rice.krad.keyvalues.KeyValuesBase;
  
  /**
   * returns list of accounting period value pairs valid for year end posting
   */
  public class YearEndAccountingPeriodValuesFinder extends KeyValuesBase {
  
      /**
       * @see org.kuali.rice.kns.lookup.keyvalues.KeyValuesFinder#getKeyValues()
       */
      @Override
      public List getKeyValues() {
          List<ConcreteKeyValue> accountingPeriodCodes = new ArrayList<ConcreteKeyValue>();
  
          Date date = SpringContext.getBean(DateTimeService.class).getCurrentSqlDate();
          AccountingPeriod currentAccountingPeriod = SpringContext.getBean(AccountingPeriodService.class).getByDate(date);
  
          if (currentAccountingPeriod.isOpen()) {
              // add the current period with blank value, so scrubber will set entries when posting
              accountingPeriodCodes.add(new ConcreteKeyValue("", currentAccountingPeriod.getUniversityFiscalPeriodName()));
          }
  
          String numberOfPostbackPeriodsParmVal = SpringContext.getBean(ParameterService.class).getParameterValueAsString(OLEConstants.CoreModuleNamespaces.OLE, OleParameterConstants.YEAR_END_ACCOUNTING_PERIOD_PARAMETER_NAMES.DETAIL_PARAMETER_TYPE, OleParameterConstants.YEAR_END_ACCOUNTING_PERIOD_PARAMETER_NAMES.NUMBER_OF_POSTBACK_PERIODS);
          if (StringUtils.isNotBlank(numberOfPostbackPeriodsParmVal) && Integer.valueOf(numberOfPostbackPeriodsParmVal) > 0) {
              for (int i = 1; i <= Integer.valueOf(numberOfPostbackPeriodsParmVal); i++) {
                  int currentFiscalYear = currentAccountingPeriod.getUniversityFiscalYear();
                  int currentFiscalPeriod = Integer.valueOf(currentAccountingPeriod.getUniversityFiscalPeriodCode());
  
                  if (currentFiscalPeriod == 1) {
                      currentFiscalYear = currentFiscalYear - 1;
                      currentFiscalPeriod = 13;
                  } else {
                      currentFiscalPeriod = currentFiscalPeriod - 1;
                  }
  
                  currentAccountingPeriod = SpringContext.getBean(AccountingPeriodService.class).getByPeriod(StringUtils.leftPad(Integer.toString(currentFiscalPeriod), 2, "0"), currentFiscalYear);
                  if (currentAccountingPeriod.isOpen()) {
                      accountingPeriodCodes.add(new ConcreteKeyValue(currentAccountingPeriod.getUniversityFiscalPeriodCode() + currentAccountingPeriod.getUniversityFiscalYear(), currentAccountingPeriod.getUniversityFiscalPeriodName()));
                  }
              }
          }
  
          return accountingPeriodCodes;
      }
  }