/*
    * Copyright 2006 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.gl.businessobject.lookup;
  
  import java.util.*;
  
  import org.apache.commons.lang.ArrayUtils;
  import org.apache.commons.lang.StringUtils;
  import org.kuali.ole.coa.businessobject.Account;
  import org.kuali.ole.coa.businessobject.ObjectCode;
  import org.kuali.ole.gl.Constant;
  import org.kuali.ole.gl.GeneralLedgerConstants;
  import org.kuali.ole.gl.OJBUtility;
  import org.kuali.ole.gl.batch.service.AccountBalanceCalculator;
  import org.kuali.ole.gl.businessobject.AccountBalance;
  import org.kuali.ole.gl.businessobject.TransientBalanceInquiryAttributes;
  import org.kuali.ole.gl.businessobject.inquiry.AccountBalanceInquirableImpl;
  import org.kuali.ole.gl.service.AccountBalanceService;
  import org.kuali.ole.sys.OLEConstants;
  import org.kuali.ole.sys.businessobject.GeneralLedgerPendingEntry;
  import org.kuali.ole.sys.businessobject.SystemOptions;
  import org.kuali.ole.sys.context.SpringContext;
  import org.kuali.ole.sys.service.OptionsService;
  import org.kuali.rice.core.api.util.type.KualiDecimal;
  import org.kuali.rice.kns.lookup.HtmlData;
  import org.kuali.rice.krad.bo.BusinessObject;
  import org.kuali.rice.krad.service.BusinessObjectService;
  import org.kuali.rice.krad.util.ObjectUtils;
  
  /**
   * A class to support Account Balance lookups
   */
  public class AccountBalanceLookupableHelperServiceImpl extends AbstractGeneralLedgerLookupableHelperServiceImpl {
  
      private AccountBalanceCalculator postAccountBalance;
      private AccountBalanceService accountBalanceService;
      private OptionsService optionsService;
  
      /**
       * Returns the url for the account balance inquiry
       * @param bo the business object with a property that an inquiry drill down url is being asked for
       * @param propertyName the property of that bo that the inquiry drill down url is being asked for
       * @return the URL for the inquiry
       * @see org.kuali.rice.kns.lookup.Lookupable#getInquiryUrl(org.kuali.rice.krad.bo.BusinessObject, java.lang.String)
       */
      @Override
      public HtmlData getInquiryUrl(BusinessObject bo, String propertyName) {
          return (new AccountBalanceInquirableImpl()).getInquiryUrl(bo, propertyName);
      }
  
      /**
       * Given a map of fieldValues, actually searches for the appropriate account balance records to return
       * @param fieldValues a map of keys for the search
       * @return a List of AccountBalance records that match the search criteria
       * @see org.kuali.rice.kns.lookup.Lookupable#getSearchResults(java.util.Map)
       * 
       * KRAD Conversion: Lookupable modifies the search results based on the fields consolidated.
       * But all field definitions are in data dictionary.
       */
      public List getSearchResults(Map fieldValues) {
          setBackLocation((String) fieldValues.get(OLEConstants.BACK_LOCATION));
          setDocFormKey((String) fieldValues.get(OLEConstants.DOC_FORM_KEY));
  
          Collection searchResultsCollection = null;
  
          // get the pending entry option. This method must be prior to the get search results
          String pendingEntryOption = this.getSelectedPendingEntryOption(fieldValues);
  
          // KFSMI-410: added one more node for consolidationOption
          String consolidationOption = (String) fieldValues.get(GeneralLedgerConstants.DummyBusinessObject.CONSOLIDATION_OPTION);
          // test if the consolidation option is selected or not
          boolean isConsolidated = isConsolidationSelected(fieldValues); 
          
          // get the search result collection
          // KFSMI-410: added one more node for consolidationOption
          if (consolidationOption.equals(Constant.EXCLUDE_SUBACCOUNTS)){
              fieldValues.put(Constant.SUB_ACCOUNT_OPTION, OLEConstants.getDashSubAccountNumber());
              isConsolidated = false;
          } 
          
          if (isConsolidated) {
              Iterator availableBalanceIterator = accountBalanceService.findConsolidatedAvailableAccountBalance(fieldValues);
              searchResultsCollection = buildConsolidedAvailableBalanceCollection(availableBalanceIterator);
          }
          else {
              Iterator availableBalanceIterator = accountBalanceService.findAvailableAccountBalance(fieldValues);
             searchResultsCollection = buildDetailedAvailableBalanceCollection(availableBalanceIterator);
         }
 
         // update search results according to the selected pending entry option
         updateByPendingLedgerEntry(searchResultsCollection, fieldValues, pendingEntryOption, isConsolidated, false);
 
         // Put the search related stuff in the objects
         for (Iterator iter = searchResultsCollection.iterator(); iter.hasNext();) {
             AccountBalance ab = (AccountBalance) iter.next();
             TransientBalanceInquiryAttributes dbo = ab.getDummyBusinessObject();
             dbo.setConsolidationOption(consolidationOption);
             dbo.setPendingEntryOption(pendingEntryOption);
         }
 
         // get the actual size of all qualified search results
             Integer recordCount = accountBalanceService.getAvailableAccountBalanceCount(fieldValues, isConsolidated);
             Long actualSize = OJBUtility.getResultActualSize(searchResultsCollection, recordCount, fieldValues, new AccountBalance());
             // Get the entry in Account
             SystemOptions option = getBusinessObjectService().findBySinglePrimaryKey(SystemOptions.class, Integer.parseInt((String)fieldValues.get(OLEConstants.FISCAL_YEAR)));
             if(option != null){
                 if(searchResultsCollection.size() < 1) {
                     String accountNumber = fieldValues.get(OLEConstants.ACCOUNT_NUMBER).toString();
                     String chartCode = fieldValues.get(OLEConstants.CHART_CODE).toString();
                     List<Account> accountList =  checkAccountEntry(accountNumber,chartCode);
                     for (Iterator<Account> accountIterator = accountList.iterator(); accountIterator.hasNext(); ) {
                         Account account = accountIterator.next();
                         AccountBalance balance = new AccountBalance();
                         balance.setChartOfAccountsCode(account.getChartOfAccountsCode());
                         balance.setAccountNumber(account.getAccountNumber());
                         String fiscalYear = fieldValues.get(OLEConstants.FISCAL_YEAR).toString();
                         balance.setUniversityFiscalYear(Integer.parseInt(fiscalYear));
                         balance.setObjectCode(Constant.CONSOLIDATED_OBJECT_TYPE_CODE);
                         balance.setSubAccountNumber(Constant.CONSOLIDATED_OBJECT_TYPE_CODE);
                         balance.setSubObjectCode(Constant.CONSOLIDATED_OBJECT_TYPE_CODE);
                         balance.setCurrentBudgetLineBalanceAmount(KualiDecimal.ZERO);
                         balance.setAccountLineActualsBalanceAmount(KualiDecimal.ZERO);
                         balance.setAccountLineEncumbranceBalanceAmount(KualiDecimal.ZERO);
                         searchResultsCollection.add(balance);
                     }
                 }
             }
         return this.buildSearchResultList(searchResultsCollection, actualSize);
     }
 
 
     public List<Account> checkAccountEntry(String accountNumber,String chartCode) {
         boolean exists = false;
         Map searchMap = new HashMap();
         searchMap.put(OLEConstants.ACCOUNT_NUMBER, accountNumber);
         searchMap.put(OLEConstants.CHART_CODE,chartCode);
         List<Account> accountList = (List) SpringContext.getBean(BusinessObjectService.class).findMatching(Account.class, searchMap);
         return accountList;
     }
     /**
      * This method builds the available account balance collection based on the input iterator
      * 
      * @param iterator the iterator of search results of account balance
      * @return the account balance collection
      */
     private Collection buildConsolidedAvailableBalanceCollection(Iterator iterator) {
         Collection balanceCollection = new ArrayList();
 
         // build available balance collection throught analyzing the input iterator
         while (iterator.hasNext()) {
             Object avaiableAccountBalance = iterator.next();
 
             if (avaiableAccountBalance.getClass().isArray()) {
                 int i = 0;
                 Object[] array = (Object[]) avaiableAccountBalance;
                 AccountBalance accountBalance = new AccountBalance();
 
                 accountBalance.setUniversityFiscalYear(new Integer(array[i++].toString()));
                 accountBalance.setChartOfAccountsCode(array[i++].toString());
 
                 accountBalance.setAccountNumber(array[i++].toString());
                 accountBalance.setSubAccountNumber(Constant.CONSOLIDATED_SUB_ACCOUNT_NUMBER);
 
                 accountBalance.setObjectCode(array[i++].toString());
                 accountBalance.setSubObjectCode(Constant.CONSOLIDATED_SUB_OBJECT_CODE);
 
                 String objectTypeCode = array[i++].toString();
                 accountBalance.getFinancialObject().setFinancialObjectTypeCode(objectTypeCode);
 
                 KualiDecimal budgetAmount = new KualiDecimal(array[i++].toString());
                 accountBalance.setCurrentBudgetLineBalanceAmount(budgetAmount);
 
                 KualiDecimal actualsAmount = new KualiDecimal(array[i++].toString());
                 accountBalance.setAccountLineActualsBalanceAmount(actualsAmount);
 
                 KualiDecimal encumbranceAmount = new KualiDecimal(array[i].toString());
                 accountBalance.setAccountLineEncumbranceBalanceAmount(encumbranceAmount);
 
                 KualiDecimal variance = calculateVariance(accountBalance);
                 accountBalance.getDummyBusinessObject().setGenericAmount(variance);
 
                 balanceCollection.add(accountBalance);
             }
         }
         return balanceCollection;
     }
 
     /**
      * This method builds the available account balance collection based on the input collection
      * 
      * @param collection a collection of account balance entries
      * @return the account balance collection
      */
     private Collection buildDetailedAvailableBalanceCollection(Iterator iterator) {
         Collection balanceCollection = new ArrayList();
 
         // build available balance collection throught analyzing the iterator above
         while (iterator.hasNext()) {
             AccountBalance accountBalance = (AccountBalance) iterator.next();
 
             if (accountBalance.getDummyBusinessObject() == null) {
                 accountBalance.setDummyBusinessObject(new TransientBalanceInquiryAttributes());
             }
 
             KualiDecimal variance = calculateVariance(accountBalance);
             accountBalance.getDummyBusinessObject().setGenericAmount(variance);
 
             balanceCollection.add(accountBalance);
         }
         return balanceCollection;
     }
 
     /**
      * This method calculates the variance of current budget balance, actuals balance and encumbrance balance
      * 
      * @param balance an account balance entry
      */
     private KualiDecimal calculateVariance(AccountBalance balance) {
 
         KualiDecimal variance = new KualiDecimal(0.0);
         KualiDecimal budgetAmount = balance.getCurrentBudgetLineBalanceAmount();
         KualiDecimal actualsAmount = balance.getAccountLineActualsBalanceAmount();
         KualiDecimal encumbranceAmount = balance.getAccountLineEncumbranceBalanceAmount();
 
         // determine if the object type code is one of the given codes
         if (ObjectUtils.isNull(balance.getFinancialObject()) || StringUtils.isBlank(balance.getFinancialObject().getFinancialObjectTypeCode())) {
             balance.refreshReferenceObject("financialObject"); // refresh if we need to...
         }
         ObjectCode financialObject = balance.getFinancialObject();
         String objectTypeCode = (financialObject == null) ? Constant.EMPTY_STRING : financialObject.getFinancialObjectTypeCode();
 
         SystemOptions options = getOptionsService().getOptions(balance.getUniversityFiscalYear());
         if (ObjectUtils.isNull(options)) {
             options = getOptionsService().getCurrentYearOptions();
         }
         String[] objectTypeCodeList = new String[3];
         objectTypeCodeList[0] = options.getFinObjTypeExpendNotExpCode();
         objectTypeCodeList[1] = options.getFinObjTypeExpNotExpendCode();
         objectTypeCodeList[2] = options.getFinObjTypeExpenditureexpCd();
 
         boolean isObjectTypeCodeInList = ArrayUtils.contains(objectTypeCodeList, objectTypeCode);
 
         // calculate the variance based on the object type code of the balance
         if (isObjectTypeCodeInList) {
             variance = budgetAmount.subtract(actualsAmount);
             variance = variance.subtract(encumbranceAmount);
         }
         else {
             variance = actualsAmount.subtract(budgetAmount);
         }
         return variance;
     }
 
     /**
      * Updates the collection of entries that will be applied to the results of the inquiry
      * 
      * @param entryCollection a collection of balance entries
      * @param fieldValues the map containing the search fields and values
      * @param isApproved flag whether the approved entries or all entries will be processed
      * @param isConsolidated flag whether the results are consolidated or not
      * @param isCostShareExcluded flag whether the user selects to see the results with cost share subaccount
      * @see org.kuali.module.gl.web.lookupable.AbstractGLLookupableImpl#updateEntryCollection(java.util.Collection, java.util.Map,
      *      boolean, boolean, boolean)
      */
     @Override
     protected void updateEntryCollection(Collection entryCollection, Map fieldValues, boolean isApproved, boolean isConsolidated, boolean isCostShareExcluded) {
 
         // convert the field names of balance object into corresponding ones of pending entry object
         Map pendingEntryFieldValues = BusinessObjectFieldConverter.convertToTransactionFieldValues(fieldValues);
 
         // go through the pending entries to update the balance collection
         Iterator pendingEntryIterator = getGeneralLedgerPendingEntryService().findPendingLedgerEntriesForAccountBalance(pendingEntryFieldValues, isApproved);
         while (pendingEntryIterator.hasNext()) {
             GeneralLedgerPendingEntry pendingEntry = (GeneralLedgerPendingEntry) pendingEntryIterator.next();
 
             if (isCostShareExcluded) {
                 if (ObjectUtils.isNotNull(pendingEntry.getSubAccount()) && ObjectUtils.isNotNull(pendingEntry.getSubAccount().getA21SubAccount())) {
                     if (OLEConstants.SubAccountType.COST_SHARE.equals(pendingEntry.getSubAccount().getA21SubAccount().getSubAccountTypeCode())) {
                         // Don't process this one
                         continue;
                     }
                 }
             }
 
             // if consolidated, change the following fields into the default values for consolidation
             if (isConsolidated) {
                 pendingEntry.setSubAccountNumber(Constant.CONSOLIDATED_SUB_ACCOUNT_NUMBER);
                 pendingEntry.setFinancialSubObjectCode(Constant.CONSOLIDATED_SUB_OBJECT_CODE);
                 pendingEntry.setFinancialObjectTypeCode(Constant.CONSOLIDATED_OBJECT_TYPE_CODE);
             }
 
             AccountBalance accountBalance = postAccountBalance.findAccountBalance(entryCollection, pendingEntry);
             postAccountBalance.updateAccountBalance(pendingEntry, accountBalance);
 
             // recalculate the variance after pending entries are combined into account balances
             if (accountBalance.getDummyBusinessObject() == null) {
                 accountBalance.setDummyBusinessObject(new TransientBalanceInquiryAttributes());
             }
             KualiDecimal variance = calculateVariance(accountBalance);
             accountBalance.getDummyBusinessObject().setGenericAmount(variance);
         }
     }
 
     /**
      * Sets the postAccountBalance attribute value.
      * 
      * @param postAccountBalance The postAccountBalance to set.
      */
     public void setPostAccountBalance(AccountBalanceCalculator postAccountBalance) {
         this.postAccountBalance = postAccountBalance;
     }
 
     /**
      * Sets the accountBalanceService attribute value.
      * 
      * @param accountBalanceService The accountBalanceService to set.
      */
     public void setAccountBalanceService(AccountBalanceService accountBalanceService) {
         this.accountBalanceService = accountBalanceService;
     }
 
     /**
      * Sets the optionsService attribute value
      * 
      * @param optionsService The optionsService to set.
      */
     public void setOptionsService(OptionsService optionsService) {
         this.optionsService = optionsService;
     }
 
     /**
      * Gets the optionsService attribute. 
      * @return Returns the optionsService.
      */
     public OptionsService getOptionsService() {
         return optionsService;
     }
 }