/*
    * Copyright 2006-2008 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.module.purap.document.validation.impl;
  
  import org.kuali.ole.module.purap.PurapConstants;
  import org.kuali.ole.module.purap.PurapKeyConstants;
  import org.kuali.ole.module.purap.PurapPropertyConstants;
  import org.kuali.ole.module.purap.businessobject.ContractManagerAssignmentDetail;
  import org.kuali.ole.module.purap.document.ContractManagerAssignmentDocument;
  import org.kuali.ole.sys.context.SpringContext;
  import org.kuali.ole.vnd.businessobject.ContractManager;
  import org.kuali.rice.kns.rules.TransactionalDocumentRuleBase;
  import org.kuali.rice.krad.document.Document;
  import org.kuali.rice.krad.rules.rule.event.ApproveDocumentEvent;
  import org.kuali.rice.krad.service.BusinessObjectService;
  import org.kuali.rice.krad.util.GlobalVariables;
  import org.kuali.rice.krad.util.KRADPropertyConstants;
  import org.kuali.rice.krad.util.ObjectUtils;
  
  import java.util.HashMap;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Map;
  
  /**
   * Business rule(s) applicable to Contract Manager Assignment document.
   */
  public class ContractManagerAssignmentDocumentRule extends TransactionalDocumentRuleBase {
      protected static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(ContractManagerAssignmentDocumentRule.class);
  
      /**
       * @see org.kuali.rice.krad.rules.TransactionalDocumentRuleBase#processCustomRouteDocumentBusinessRules(Document)
       */
      @Override
      protected boolean processCustomRouteDocumentBusinessRules(Document document) {
          boolean isValid = true;
          ContractManagerAssignmentDocument acmDocument = (ContractManagerAssignmentDocument) document;
          return isValid &= processValidation(acmDocument);
      }
  
      /**
       * @see org.kuali.rice.krad.rules.DocumentRuleBase#processCustomApproveDocumentBusinessRules(org.kuali.rice.krad.rule.event.ApproveDocumentEvent)
       */
      @Override
      protected boolean processCustomApproveDocumentBusinessRules(ApproveDocumentEvent approveEvent) {
          boolean isValid = true;
          ContractManagerAssignmentDocument acmDocument = (ContractManagerAssignmentDocument) approveEvent.getDocument();
          // isValid &= processValidation(acmDocument);
          return isValid;
      }
  
      /**
       * Perform validation for Contract Manager Assignment document such as validating contract manager codes.
       *
       * @param document Contract Manager Assignment document
       * @return Boolean indicating if validation succeeded
       */
      protected boolean processValidation(ContractManagerAssignmentDocument document) {
          return validateContractManagerCodes(document.getContractManagerAssignmentDetails());
      }
  
      /**
       * Review the list of ContractManagerAssignmentDetails where the user has entered ContractManagerCodes,
       * validates that each entered code is valid;
       * on the other hand, validate that at least one row has a valid CM code assigned.
       *
       * @param contractManagerAssignmentDetails
       *         A list containing the code to be validated.
       * @return Boolean indicating if validation succeeded
       */
      public boolean validateContractManagerCodes(List contractManagerAssignmentDetails) {
          LOG.debug("validateContractManagerCodes(): entered method.");
          boolean isValid = true;
          int count = 0;
  
          for (Iterator iter = contractManagerAssignmentDetails.iterator(); iter.hasNext(); ) {
              ContractManagerAssignmentDetail detail = (ContractManagerAssignmentDetail) iter.next();
  
              // Look for the contractManagerCode in the table. If not there the code is invalid.
              if (ObjectUtils.isNotNull(detail.getContractManagerCode())) {
                  Map fieldValues = new HashMap();
                  fieldValues.put(PurapPropertyConstants.CONTRACT_MANAGER_CODE, detail.getContractManagerCode());
                  fieldValues.put(KRADPropertyConstants.ACTIVE, true);
                  if (SpringContext.getBean(BusinessObjectService.class).countMatching(ContractManager.class, fieldValues) != 1) {
                      GlobalVariables.getMessageMap().putError(PurapConstants.ASSIGN_CONTRACT_MANAGER_TAB_ERRORS, PurapKeyConstants.INVALID_CONTRACT_MANAGER_CODE, detail.getContractManagerCode().toString());
                      isValid = false;
                 } else {
                     count++;
                 }
                 if (detail.getContractManagerCode().equals(PurapConstants.APO_CONTRACT_MANAGER)) {
                     GlobalVariables.getMessageMap().putError(PurapConstants.ASSIGN_CONTRACT_MANAGER_TAB_ERRORS, PurapKeyConstants.ERROR_APO_CONTRACT_MANAGER_CODE_CHOSEN, detail.getContractManagerCode().toString());
                     isValid = false;
                 }
             }
         }
 
         // check if at least one row has a valid CM code assigned
         if (count < 1) {
             GlobalVariables.getMessageMap().putError(PurapConstants.ASSIGN_CONTRACT_MANAGER_TAB_ERRORS, PurapKeyConstants.NO_CONTRACT_MANAGER_ASSIGNED);
             isValid = false;
         }
 
         LOG.debug("validateContractManagerCodes(): leaving method.");
         return isValid;
     }
 }