/*
    * 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.fp.document.validation.impl;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.List;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.kfs.fp.businessobject.CapitalAccountingLines;
  import org.kuali.kfs.fp.document.CapitalAccountingLinesDocumentBase;
  import org.kuali.kfs.integration.cam.businessobject.Asset;
  import org.kuali.kfs.sys.KFSConstants;
  import org.kuali.kfs.sys.KFSKeyConstants;
  import org.kuali.kfs.sys.KFSParameterKeyConstants;
  import org.kuali.kfs.sys.businessobject.AccountingLine;
  import org.kuali.kfs.sys.businessobject.SourceAccountingLine;
  import org.kuali.kfs.sys.context.SpringContext;
  import org.kuali.kfs.sys.document.AccountingDocument;
  import org.kuali.rice.core.api.config.property.ConfigurationService;
  import org.kuali.rice.coreservice.framework.parameter.ParameterService;
  import org.kuali.rice.kns.rules.PromptBeforeValidationBase;
  import org.kuali.rice.krad.document.Document;
  import org.kuali.rice.krad.service.KRADServiceLocatorWeb;
  import org.kuali.rice.krad.util.ObjectUtils;
  
  /**
   * Performs warning checks and prompts for capital accounting lines object sub type matching
   */
  public class CapitalAccountingLinesPreRules extends PromptBeforeValidationBase {
  
      /**
       * Default Constructor
       */
      public CapitalAccountingLinesPreRules() {
          super();
      }
      
      /**
       * Main hook point to perform rules check.
       * 
       * @see org.kuali.rice.kns.rules.PromptBeforeValidationBase#doRules(org.kuali.rice.krad.document.Document)
       */
      @Override
      public boolean doPrompts(Document document) {
          AccountingDocument accountingDocument = (AccountingDocument) document;
          List<AccountingLine> accountingLines = accountingDocument.getSourceAccountingLines();
          accountingLines.addAll(accountingDocument.getTargetAccountingLines());
          
          CapitalAccountingLinesDocumentBase caldb = (CapitalAccountingLinesDocumentBase) document;
          List<CapitalAccountingLines> capitalAccountingLines = caldb.getCapitalAccountingLines();        
  
          if (hasDifferentObjectSubTypes(capitalAccountingLines, accountingLines)) {
              if (!isOkHavingDifferentObjectSubTypes()) {
                  event.setActionForwardName(KFSConstants.MAPPING_BASIC);
                  return false;
              }
          }
          
          return true;
      }
      
      /**
       * This method determines whether or not an asset has different object sub type codes in its documents.
       * 
       * @return true when the asset has payments with object codes that point to different object sub type codes
       */
      public boolean hasDifferentObjectSubTypes(List<CapitalAccountingLines> capitalAccountingLines, List<AccountingLine> accountingLines) {
          List<String> subTypes = new ArrayList<String>();
          List<String> objectSubTypeList = new ArrayList<String>();
          List<String> validObjectSubTypes = new ArrayList<String>();
          
          subTypes = new ArrayList<String>( SpringContext.getBean(ParameterService.class).getParameterValuesAsString(Asset.class, KFSParameterKeyConstants.CamParameterConstants.OBJECT_SUB_TYPE_GROUPS) );
  
          for (String subType : subTypes) {
              validObjectSubTypes = Arrays.asList(StringUtils.split(subType, ","));
          }
          
          for (CapitalAccountingLines capitalAccountLine : capitalAccountingLines) {
              if (capitalAccountLine.isSelectLine() && capitalAccountLine.isAmountDistributed()) {
                  AccountingLine matchAccountingLine = findAccountingLine(accountingLines, capitalAccountLine);
                  if (ObjectUtils.isNotNull(matchAccountingLine)) {
                      matchAccountingLine.refreshReferenceObject("objectCode");  
                 }
                 if (validObjectSubTypes.contains(matchAccountingLine.getObjectCode().getFinancialObjectSubTypeCode())) {
                     if (!objectSubTypeList.contains(matchAccountingLine.getObjectCode().getFinancialObjectSubTypeCode())) {
                         //different object subtypes
                         return true;
                     }
                     objectSubTypeList.add(matchAccountingLine.getObjectCode().getFinancialObjectSubTypeCode());
                 }
             }
         }
         
         if (objectSubTypeList.isEmpty()) {
             return false;
         }
         
         return false;
         
     }
 
     /**
      * Finds the accounting line that matches the capital accounting line.
      * @param capitalAccountLine
      * @return accounting line
      */
     protected AccountingLine findAccountingLine(List<AccountingLine> accountingLines, CapitalAccountingLines capitalAccountingLine) {
         AccountingLine accountingLine = null;
         
         for (AccountingLine line : accountingLines) {
             if (capitalAccountingLine.getChartOfAccountsCode().equals(line.getChartOfAccountsCode()) && 
                     capitalAccountingLine.getAccountNumber().equals(line.getAccountNumber()) &&
                     capitalAccountingLine.getFinancialObjectCode().equals(line.getFinancialObjectCode()) &&
                     capitalAccountingLine.getLineType().equalsIgnoreCase(line instanceof SourceAccountingLine ? KFSConstants.SOURCE : KFSConstants.TARGET)) {
                 return line;
             }
         }
         
         return accountingLine;
     }
     
     protected boolean isOkHavingDifferentObjectSubTypes() {
         String parameterDetail = "(module:" + KRADServiceLocatorWeb.getKualiModuleService().getNamespaceCode(Asset.class) + "/component:" + Asset.class.getSimpleName() + ")";
         ConfigurationService kualiConfiguration = SpringContext.getBean(ConfigurationService.class);
 
         String continueQuestion = kualiConfiguration.getPropertyValueAsString(KFSKeyConstants.CONTINUE_QUESTION);
         String warningMessage = kualiConfiguration.getPropertyValueAsString(KFSKeyConstants.WARNING_NOT_SAME_OBJECT_SUB_TYPES) + " " + KFSParameterKeyConstants.CamParameterConstants.OBJECT_SUB_TYPE_GROUPS + " " + parameterDetail + ". " + continueQuestion;
         return super.askOrAnalyzeYesNoQuestion(KFSConstants.FinancialDocumentTypeCodes.ASSET_DIFFERENT_OBJECT_SUB_TYPE_CONFIRMATION_QUESTION, warningMessage);
     }
 
     protected ParameterService getParameterService() {
         return SpringContext.getBean(ParameterService.class);
     }
 }