/*
    * 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.module.purap.document.validation.impl;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.ole.module.purap.PurapConstants;
  import org.kuali.ole.module.purap.PurapConstants.PRQSDocumentsStrings;
  import org.kuali.ole.module.purap.PurapKeyConstants;
  import org.kuali.ole.module.purap.PurapParameterConstants;
  import org.kuali.ole.module.purap.document.AccountsPayableDocument;
  import org.kuali.ole.module.purap.document.InvoiceDocument;
  import org.kuali.ole.module.purap.document.PurchasingAccountsPayableDocument;
  import org.kuali.ole.module.purap.document.service.InvoiceService;
  import org.kuali.ole.module.purap.document.service.PurapService;
  import org.kuali.ole.module.purap.document.validation.event.AttributedExpiredAccountWarningEvent;
  import org.kuali.ole.module.purap.document.validation.event.AttributedTradeInWarningEvent;
  import org.kuali.ole.sys.OLEConstants;
  import org.kuali.ole.sys.OLEKeyConstants;
  import org.kuali.ole.sys.context.SpringContext;
  import org.kuali.ole.sys.service.UniversityDateService;
  import org.kuali.ole.sys.service.impl.OleParameterConstants;
  import org.kuali.rice.core.api.config.property.ConfigurationService;
  import org.kuali.rice.core.web.format.CurrencyFormatter;
  import org.kuali.rice.coreservice.framework.parameter.ParameterService;
  import org.kuali.rice.krad.document.Document;
  import org.kuali.rice.krad.service.KualiRuleService;
  
  /**
   * Business pre rule(s) applicable to Invoice documents.
   */
  public class InvoiceDocumentPreRules extends AccountsPayableDocumentPreRulesBase {
  
      /**
       * Default Constructor
       */
      public InvoiceDocumentPreRules() {
          super();
      }
  
      /**
       * Main hook point to perform rules check.
       *
       * @see org.kuali.rice.kns.rules.PromptBeforeValidationBase#doPrompts(org.kuali.rice.krad.document.Document)
       */
      @Override
      public boolean doPrompts(Document document) {
          boolean preRulesOK = true;
  
          InvoiceDocument invoice = (InvoiceDocument) document;
          if ((!SpringContext.getBean(PurapService.class).isFullDocumentEntryCompleted(invoice)) || (StringUtils.equals(invoice.getApplicationDocumentStatus(), PurapConstants.InvoiceStatuses.APPDOC_AWAITING_ACCOUNTS_PAYABLE_REVIEW))) {
              if (!confirmPayDayNotOverThresholdDaysAway(invoice)) {
                  return false;
              }
              if (!confirmUnusedTradeIn(invoice)) {
                  return false;
              }
              if (!confirmEncumberNextFiscalYear(invoice)) {
                  return false;
              }
  
              if (!confirmEncumberPriorFiscalYear(invoice)) {
                  return false;
              }
          }
          if (SpringContext.getBean(PurapService.class).isFullDocumentEntryCompleted(invoice)) {
              if (!confirmExpiredAccount(invoice)) {
                  return false;
              }
          }
  
  
          preRulesOK &= super.doPrompts(document);
          return preRulesOK;
      }
  
      /**
       * Prompts user to confirm with a Yes or No to a question being asked.
       *
       * @param questionType    - type of question
       * @param messageConstant - key to retrieve message
       * @return - true if overriding, false otherwise
       */
      protected boolean askForConfirmation(String questionType, String messageConstant) {
  
          String questionText = SpringContext.getBean(ConfigurationService.class).getPropertyValueAsString(messageConstant);
          if (questionText.contains("{")) {
             questionText = prepareQuestionText(questionType, questionText);
         } else if (StringUtils.equals(messageConstant, OLEKeyConstants.ERROR_ACCOUNT_EXPIRED) || StringUtils.equals(messageConstant, PurapKeyConstants.WARNING_ITEM_TRADE_IN_AMOUNT_UNUSED)) {
             questionText = questionType;
         }
 
 
         boolean confirmOverride = super.askOrAnalyzeYesNoQuestion(questionType, questionText);
 
         if (!confirmOverride) {
             event.setActionForwardName(OLEConstants.MAPPING_BASIC);
             return false;
         }
         return true;
     }
 
     /**
      * Creates the actual text of the question, replacing place holders like pay date threshold with an actual constant value.
      *
      * @param questionType - type of question
      * @param questionText - actual text of question pulled from resource file
      * @return - question text with place holders replaced
      */
     protected String prepareQuestionText(String questionType, String questionText) {
         if (StringUtils.equals(questionType, PRQSDocumentsStrings.THRESHOLD_DAYS_OVERRIDE_QUESTION)) {
             questionText = StringUtils.replace(questionText, "{0}", new Integer(PurapConstants.PRQS_PAY_DATE_DAYS_BEFORE_WARNING).toString());
         }
         return questionText;
     }
 
     /**
      * Validates if the pay date threshold has not been passed, if so confirmation is required by the user to
      * exceed the threshold.
      *
      * @param invoice - invoice document
      * @return - true if threshold has not been surpassed or if user confirmed ok to override, false otherwise
      */
     public boolean confirmPayDayNotOverThresholdDaysAway(InvoiceDocument invoice) {
 
         // If the pay date is more than the threshold number of days in the future, ask for confirmation.
         //boolean rulePassed = SpringContext.getBean(KualiRuleService.class).applyRules(new AttributedPayDateNotOverThresholdDaysAwayEvent("", invoice));
 
         //if (!rulePassed) {
         // The problem is that rulePassed always return true
         int thresholdDays = PurapConstants.PRQS_PAY_DATE_DAYS_BEFORE_WARNING;
         if ((invoice.getInvoicePayDate() != null) && SpringContext.getBean(PurapService.class).isDateMoreThanANumberOfDaysAway(invoice.getInvoicePayDate(), thresholdDays)) {
             return askForConfirmation(PRQSDocumentsStrings.THRESHOLD_DAYS_OVERRIDE_QUESTION, PurapKeyConstants.MESSAGE_PAYMENT_REQUEST_PAYDATE_OVER_THRESHOLD_DAYS);
         }
         return true;
     }
 
     public boolean confirmUnusedTradeIn(InvoiceDocument invoice) {
         boolean rulePassed = SpringContext.getBean(KualiRuleService.class).applyRules(new AttributedTradeInWarningEvent("", invoice));
 
         if (!rulePassed) {
             return askForConfirmation(PRQSDocumentsStrings.UNUSED_TRADE_IN_QUESTION, PurapKeyConstants.WARNING_ITEM_TRADE_IN_AMOUNT_UNUSED);
         }
         return true;
     }
 
     public boolean confirmExpiredAccount(InvoiceDocument invoice) {
         boolean rulePassed = SpringContext.getBean(KualiRuleService.class).applyRules(new AttributedExpiredAccountWarningEvent("", invoice));
 
         if (!rulePassed) {
             return askForConfirmation(PRQSDocumentsStrings.EXPIRED_ACCOUNT_QUESTION, OLEKeyConstants.ERROR_ACCOUNT_EXPIRED);
         }
         return true;
     }
 
     public boolean confirmEncumberNextFiscalYear(InvoiceDocument invoice) {
         Integer fiscalYear = SpringContext.getBean(UniversityDateService.class).getCurrentFiscalYear();
         if (invoice.getPurchaseOrderDocument().getPostingYear().intValue() > fiscalYear) {
             return askForConfirmation(PRQSDocumentsStrings.ENCUMBER_NEXT_FISCAL_YEAR_QUESTION, PurapKeyConstants.WARNING_ENCUMBER_NEXT_FY);
         }
 
         return true;
     }
 
     public boolean confirmEncumberPriorFiscalYear(InvoiceDocument invoice) {
 
         Integer fiscalYear = SpringContext.getBean(UniversityDateService.class).getCurrentFiscalYear();
         if (invoice.getPurchaseOrderDocument().getPostingYear().intValue() == fiscalYear && SpringContext.getBean(InvoiceService.class).allowBackpost(invoice)) {
             return askForConfirmation(PRQSDocumentsStrings.ENCUMBER_PRIOR_FISCAL_YEAR_QUESTION, PurapKeyConstants.WARNING_ENCUMBER_PRIOR_FY);
         }
         return true;
     }
 
     /**
      * @see AccountsPayableDocumentPreRulesBase#getDocumentName()
      */
     @Override
     public String getDocumentName() {
         return "Invoice";
     }
 
     /**
      * @see AccountsPayableDocumentPreRulesBase#createInvoiceNoMatchQuestionText(org.kuali.ole.module.purap.document.AccountsPayableDocument)
      */
     @Override
     public String createInvoiceNoMatchQuestionText(AccountsPayableDocument accountsPayableDocument) {
 
         String questionText = super.createInvoiceNoMatchQuestionText(accountsPayableDocument);
 
         CurrencyFormatter cf = new CurrencyFormatter();
         InvoiceDocument invoice = (InvoiceDocument) accountsPayableDocument;
 
         StringBuffer questionTextBuffer = new StringBuffer("");
         questionTextBuffer.append(questionText);
 
         questionTextBuffer.append("[br][br][b]Summary Detail Below:[b][br][br][table questionTable]");
         questionTextBuffer.append("[tr][td leftTd]Vendor Invoice Amount entered on start screen:[/td][td rightTd]" + (String) cf.format(invoice.getInitialAmount()) + "[/td][/tr]");
         questionTextBuffer.append("[tr][td leftTd]Invoice Total Prior to Additional Charges:[/td][td rightTd]" + (String) cf.format(invoice.getTotalPreTaxDollarAmountAboveLineItems()) + "[/td][/tr]");
 
 
         //only add this line if invoice has a discount
         if (invoice.isDiscount()) {
             questionTextBuffer.append("[tr][td leftTd]Total Before Discount:[/td][td rightTd]" + (String) cf.format(invoice.getGrandPreTaxTotalExcludingDiscount()) + "[/td][/tr]");
         }
 
         //if sales tax is enabled, show additional summary lines
         boolean salesTaxInd = SpringContext.getBean(ParameterService.class).getParameterValueAsBoolean(OleParameterConstants.PURCHASING_DOCUMENT.class, PurapParameterConstants.ENABLE_SALES_TAX_IND);
         if (salesTaxInd) {
             questionTextBuffer.append("[tr][td leftTd]Grand Total Prior to Tax:[/td][td rightTd]" + (String) cf.format(invoice.getGrandPreTaxTotal()) + "[/td][/tr]");
             questionTextBuffer.append("[tr][td leftTd]Grand Total Tax:[/td][td rightTd]" + (String) cf.format(invoice.getGrandTaxAmount()) + "[/td][/tr]");
         }
 
         questionTextBuffer.append("[tr][td leftTd]Grand Total:[/td][td rightTd]" + (String) cf.format(invoice.getGrandTotal()) + "[/td][/tr][/table]");
 
         return questionTextBuffer.toString();
 
     }
 
     @Override
     protected boolean checkCAMSWarningStatus(PurchasingAccountsPayableDocument purapDocument) {
         return PurapConstants.CAMSWarningStatuses.PAYMENT_REQUEST_STATUS_WARNING_NO_CAMS_DATA.contains(purapDocument.getApplicationDocumentStatus());
     }
 
     /**
      * Determines if the amount entered on the init tab is mismatched with the grand total of the document.
      *
      * @param accountsPayableDocument
      * @return
      */
     @Override
     protected boolean validateInvoiceTotalsAreMismatched(AccountsPayableDocument accountsPayableDocument) {
         boolean mismatched = false;
         InvoiceDocument payReqDoc = (InvoiceDocument) accountsPayableDocument;
         String[] excludeArray = {PurapConstants.ItemTypeCodes.ITEM_TYPE_PMT_TERMS_DISCOUNT_CODE};
 
         //  if UseTax is included, then the invoiceInitialAmount should be compared against the 
         // total amount NOT INCLUDING tax
         if (payReqDoc.isUseTaxIndicator()) {
             if (payReqDoc.getTotalPreTaxDollarAmountAllItems(excludeArray).compareTo(accountsPayableDocument.getInitialAmount()) != 0 && !accountsPayableDocument.isUnmatchedOverride()) {
                 mismatched = true;
             }
         }
 
         //  if NO UseTax, then the invoiceInitialAmount should be compared against the 
         // total amount INCLUDING sales tax (since if the vendor invoices with sales tax, then we pay it)
         else {
             if (accountsPayableDocument.getTotalDollarAmountAllItems(excludeArray).compareTo(accountsPayableDocument.getInitialAmount()) != 0 && !accountsPayableDocument.isUnmatchedOverride()) {
                 mismatched = true;
             }
         }
 
         return mismatched;
     }
 
 }