/*
    * 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.web.struts;
  
  import org.kuali.ole.module.purap.PurapAuthorizationConstants.InvoiceEditMode;
  import org.kuali.ole.module.purap.PurapConstants;
  import org.kuali.ole.module.purap.PurapConstants.InvoiceStatuses;
  import org.kuali.ole.module.purap.businessobject.PurApItem;
  import org.kuali.ole.module.purap.document.InvoiceDocument;
  import org.kuali.ole.module.purap.document.service.PurapService;
  import org.kuali.ole.select.businessobject.OlePurchaseOrderItem;
  import org.kuali.ole.sys.OLEConstants;
  import org.kuali.ole.sys.context.SpringContext;
  import org.kuali.rice.core.api.config.property.ConfigurationService;
  import org.kuali.rice.kew.api.WorkflowDocument;
  import org.kuali.rice.kns.document.authorization.DocumentAuthorizer;
  import org.kuali.rice.kns.service.DocumentHelperService;
  import org.kuali.rice.kns.web.ui.ExtraButton;
  import org.kuali.rice.kns.web.ui.HeaderField;
  import org.kuali.rice.krad.util.GlobalVariables;
  import org.kuali.rice.krad.util.KRADConstants;
  import org.kuali.rice.krad.util.ObjectUtils;
  
  import javax.servlet.http.HttpServletRequest;
  import java.util.List;
  
  /**
   * Struts Action Form for Invoice document.
   */
  public class InvoiceForm extends AccountsPayableFormBase {
  
      /**
       * Indicates whether tax has been calculated based on the tax area data.
       * Tax calculation is enforced before preq can be routed for tax approval.
       */
      protected boolean calculatedTax;
  
      /**
       * Constructs a InvoiceForm instance and sets up the appropriately casted document.
       */
      public InvoiceForm() {
          super();
          this.setNewPurchasingItemLine(setupNewPurchasingItemLine());
          //on PO, account distribution should be read only
          setReadOnlyAccountDistributionMethod(true);
      }
  
      @Override
      protected String getDefaultDocumentTypeName() {
          return "OLE_PRQS";
      }
  
      public boolean isCalculatedTax() {
          return calculatedTax;
      }
  
      public void setCalculatedTax(boolean calculatedTax) {
          this.calculatedTax = calculatedTax;
      }
  
      public InvoiceDocument getInvoiceDocument() {
          return (InvoiceDocument) getDocument();
      }
  
      public void setInvoiceDocument(InvoiceDocument purchaseOrderDocument) {
          setDocument(purchaseOrderDocument);
      }
  
      @Override
      public void populateHeaderFields(WorkflowDocument workflowDocument) {
          super.populateHeaderFields(workflowDocument);
  
          if (ObjectUtils.isNotNull(this.getInvoiceDocument().getPurapDocumentIdentifier())) {
              getDocInfo().add(new HeaderField("DataDictionary.InvoiceDocument.attributes.purapDocumentIdentifier", ((InvoiceDocument) this.getDocument()).getPurapDocumentIdentifier().toString()));
          } else {
              getDocInfo().add(new HeaderField("DataDictionary.InvoiceDocument.attributes.purapDocumentIdentifier", "Not Available"));
          }
  
          String applicationDocumentStatus = "Not Available";
  
          if (ObjectUtils.isNotNull(this.getInvoiceDocument().getApplicationDocumentStatus())) {
              applicationDocumentStatus = workflowDocument.getApplicationDocumentStatus();
          }
  
          getDocInfo().add(new HeaderField("DataDictionary.InvoiceDocument.attributes.applicationDocumentStatus", applicationDocumentStatus));
      }
 
     /**
      * @see PurchasingFormBase#setupNewPurchasingItemLine()
      */
     @Override
     public PurApItem setupNewPurchasingItemLine() {
         return new OlePurchaseOrderItem();
     }
 
     /**
      * Build additional Invoice specific buttons and set extraButtons list.
      *
      * @return - list of extra buttons to be displayed to the user
      *         <p/>
      *         KRAD Conversion: Performs customization of an extra button.
      *         <p/>
      *         No data dictionary is involved.
      */
     @Override
     public List<ExtraButton> getExtraButtons() {
         extraButtons.clear(); // clear out the extra buttons array
         InvoiceDocument invoiceDocument = this.getInvoiceDocument();
         String externalImageURL = SpringContext.getBean(ConfigurationService.class).getPropertyValueAsString(OLEConstants.RICE_EXTERNALIZABLE_IMAGES_URL_KEY);
         String appExternalImageURL = SpringContext.getBean(ConfigurationService.class).getPropertyValueAsString(OLEConstants.EXTERNALIZABLE_IMAGES_URL_KEY);
 
         if (canContinue()) {
             addExtraButton("methodToCall.continuePRQS", externalImageURL + "buttonsmall_continue.gif", "Continue");
             addExtraButton("methodToCall.clearInitFields", externalImageURL + "buttonsmall_clear.gif", "Clear");
         } else {
             if (getEditingMode().containsKey(InvoiceEditMode.HOLD)) {
                 addExtraButton("methodToCall.addHoldOnPayment", appExternalImageURL + "buttonsmall_hold.gif", "Hold");
             }
 
             if (getEditingMode().containsKey(InvoiceEditMode.REMOVE_HOLD) && invoiceDocument.isHoldIndicator()) {
                 addExtraButton("methodToCall.removeHoldFromPayment", appExternalImageURL + "buttonsmall_removehold.gif", "Remove");
             }
 
             if (getEditingMode().containsKey(InvoiceEditMode.REQUEST_CANCEL)) {
                 addExtraButton("methodToCall.requestCancelOnPayment", appExternalImageURL + "buttonsmall_requestcancel.gif", "Cancel");
             }
 
             if (getEditingMode().containsKey(InvoiceEditMode.REMOVE_REQUEST_CANCEL) && invoiceDocument.isInvoiceCancelIndicator()) {
                 addExtraButton("methodToCall.removeCancelRequestFromPayment", appExternalImageURL + "buttonsmall_remreqcanc.gif", "Remove");
             }
 
             if (canCalculate()) {
                 addExtraButton("methodToCall.calculate", appExternalImageURL + "buttonsmall_calculate.gif", "Calculate");
             }
 
             if (getEditingMode().containsKey(InvoiceEditMode.ACCOUNTS_PAYABLE_PROCESSOR_CANCEL) ||
                     getEditingMode().containsKey(InvoiceEditMode.ACCOUNTS_PAYABLE_MANAGER_CANCEL)) {
                 if (PurapConstants.PurchaseOrderStatuses.APPDOC_CLOSED.equals(invoiceDocument.getPurchaseOrderDocument().getApplicationDocumentStatus())) {
                     //if the PO is CLOSED, show the 'open order' button; but only if there are no pending actions on the PO
                     if (!invoiceDocument.getPurchaseOrderDocument().isPendingActionIndicator()) {
                         addExtraButton("methodToCall.reopenPo", appExternalImageURL + "buttonsmall_openorder.gif", "Reopen PO");
                     }
                 } else {
                     if (!invoiceDocument.getFinancialSystemDocumentHeader().getWorkflowDocument().isDisapproved()) {
                         addExtraButton("methodToCall.cancel", externalImageURL + "buttonsmall_cancel.gif", "Cancel");
                     }
                 }
             }
         }
 
         return extraButtons;
     }
 
     /**
      * Determines whether the current user can continue creating or clear fields of the Invoice in initial status. Conditions:
      * - the Invoice must be in the INITIATE state; and
      * - the user must have the authorization to initiate a Invoice.
      *
      * @return True if the current user can continue creating or clear fields of the initiated Invoice.
      */
     public boolean canContinue() {
         // preq must be in initiated status
         boolean can = InvoiceStatuses.APPDOC_INITIATE.equals(getInvoiceDocument().getApplicationDocumentStatus());
 
         // check user authorization
         if (can) {
             DocumentAuthorizer documentAuthorizer = SpringContext.getBean(DocumentHelperService.class).getDocumentAuthorizer(getInvoiceDocument());
             can = documentAuthorizer.canInitiate(OLEConstants.FinancialDocumentTypeCodes.INVOICE, GlobalVariables.getUserSession().getPerson());
         }
 
         return can;
     }
 
     /**
      * Determine whether the current user can calculate the invoice. Conditions:
      * - Invoice is not FullDocumentEntryCompleted, and
      * - current user has the permission to edit the document.
      *
      * @return True if the current user can calculate the Invoice.
      */
     public boolean canCalculate() {
         // preq must not be FullDocumentEntryCompleted
         boolean can = !SpringContext.getBean(PurapService.class).isFullDocumentEntryCompleted(getInvoiceDocument());
 
         // check user authorization: whoever can edit can calculate
         can = can && documentActions.containsKey(KRADConstants.KUALI_ACTION_CAN_EDIT);
 
         //FIXME this is temporary so that calculate will show up at tax
         can = can || editingMode.containsKey(InvoiceEditMode.TAX_AREA_EDITABLE);
 
         return can;
     }
 
     /**
      * @see org.kuali.rice.kns.web.struts.form.KualiDocumentFormBase#shouldMethodToCallParameterBeUsed(String, String, javax.servlet.http.HttpServletRequest)
      */
     @Override
     public boolean shouldMethodToCallParameterBeUsed(String methodToCallParameterName, String methodToCallParameterValue, HttpServletRequest request) {
         if (KRADConstants.DISPATCH_REQUEST_PARAMETER.equals(methodToCallParameterName) &&
                 ("changeUseTaxIndicator".equals(methodToCallParameterValue))) {
             return true;
         }
         return super.shouldMethodToCallParameterBeUsed(methodToCallParameterName, methodToCallParameterValue, request);
     }
 
 }