/*
    * 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.
   */
  /*
   * Created on Sep 6, 2005
   *
   */
  package org.kuali.ole.module.purap.pdf;
  
  import com.lowagie.text.*;
  import com.lowagie.text.pdf.*;
  import org.kuali.ole.module.purap.PurapConstants;
  import org.kuali.ole.module.purap.businessobject.PurchaseOrderVendorQuote;
  import org.kuali.ole.module.purap.document.PurchaseOrderDocument;
  import org.kuali.ole.module.purap.util.PurApDateFormatUtils;
  import org.kuali.ole.sys.context.SpringContext;
  import org.kuali.rice.core.api.datetime.DateTimeService;
  
  import java.io.ByteArrayOutputStream;
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.FileOutputStream;
  import java.sql.Date;
  import java.text.SimpleDateFormat;
  import java.util.ArrayList;
  import java.util.Collection;
  
  /**
   * Base class to handle pdf for purchase order quote request documents.
   */
  public class PurchaseOrderQuoteRequestsPdf extends PdfPageEventHelper {
      private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(PurchaseOrderQuoteRequestsPdf.class);
  
      public PdfTemplate tpl; // A template that will hold the total number of pages.
      public PdfContentByte cb;
      public PdfPTable headerTable;
      public PurchaseOrderDocument po;
      public BaseFont helv;
  
      Font titleFont = FontFactory.getFont("ARIAL", 14, 0);
      Font cellTitleFont = FontFactory.getFont("ARIAL", 8, 0);
      Font cellTextFont = FontFactory.getFont("ARIAL", 12, 0);
  
      public PurchaseOrderQuoteRequestsPdf() {
          super();
      }
  
      /**
       * Overrides the method in PdfPageEventHelper from itext to initialize the template and font for purchase
       * order quote request pdf documents.
       *
       * @param writer   The PdfWriter for this document.
       * @param document The document.
       * @see com.lowagie.text.pdf.PdfPageEventHelper#onOpenDocument(com.lowagie.text.pdf.PdfWriter, com.lowagie.text.Document)
       */
      public void onOpenDocument(PdfWriter writer, Document document) {
          LOG.debug("onOpenDocument() started.");
          try {
              // initialization of the template
              tpl = writer.getDirectContent().createTemplate(100, 100);
              // initialization of the font
              helv = BaseFont.createFont("Helvetica", BaseFont.WINANSI, false);
          } catch (Exception e) {
              throw new ExceptionConverter(e);
          }
      }
  
      /**
       * Overrides the method in PdfPageEventHelper from itext to compose the footer and show the
       * footer.
       *
       * @param writer   The PdfWriter for this document.
       * @param document The document.
       * @see com.lowagie.text.pdf.PdfPageEventHelper#onEndPage(com.lowagie.text.pdf.PdfWriter, com.lowagie.text.Document)
       */
      public void onEndPage(PdfWriter writer, Document document) {
          LOG.debug("onEndPage() started.");
          PdfContentByte cb = writer.getDirectContent();
          cb.saveState();
          // compose the footer
          String text = "Page " + writer.getPageNumber() + " of ";
          float textSize = helv.getWidthPoint(text, 12);
          float textBase = document.bottom() - 20;
          cb.beginText();
          cb.setFontAndSize(helv, 12);
          // show the footer
          float adjust = helv.getWidthPoint("0", 12);
         cb.setTextMatrix(document.right() - textSize - adjust, textBase);
         cb.showText(text);
         cb.endText();
         cb.addTemplate(tpl, document.right() - adjust, textBase);
         cb.saveState();
     }
 
 
     /**
      * Overrides the method in the PdfPageEventHelper from itext to put the total number of pages into the template.
      *
      * @param writer   The PdfWriter for this document.
      * @param document The document.
      * @see com.lowagie.text.pdf.PdfPageEventHelper#onCloseDocument(com.lowagie.text.pdf.PdfWriter, com.lowagie.text.Document)
      */
     public void onCloseDocument(PdfWriter writer, Document document) {
         LOG.debug("onCloseDocument() started.");
         tpl.beginText();
         tpl.setFontAndSize(helv, 12);
         tpl.setTextMatrix(0, 0);
         tpl.showText("" + (writer.getPageNumber() - 1));
         tpl.endText();
     }
 
     /**
      * Gets a PageEvents object.
      *
      * @return a new PageEvents object
      */
     public PurchaseOrderPdf getPageEvents() {
         LOG.debug("getPageEvents() started.");
         return new PurchaseOrderPdf();
     }
 
     /**
      * Creates an instance of a new Document and set its margins.
      *
      * @return The created Document object.
      */
     private Document getDocument() throws DocumentException {
         LOG.debug("getDocument() started");
         Document document = new Document(PageSize.A4);
         // Margins: 36pt = 0.5 inch, 72pt = 1 inch. Left, right, top, bottom.
         document.setMargins(9, 9, 25, 36);
         return document;
     }
 
     /**
      * Generates the purchase order quote request list pdf document based on the data in the given input parameters
      * by creating a pdf writer using the given byteArrayOutputStream then calls the createPOQuoteRequestsListPdf to
      * write the pdf document into the writer.
      *
      * @param po                    The PurchaseOrderDocument to be used to generate the pdf.
      * @param byteArrayOutputStream The ByteArrayOutputStream to print the pdf to.
      * @param institutionName       The purchasing institution name.
      * @return Collection of errors which are made of the messages from DocumentException.
      */
     public Collection generatePOQuoteRequestsListPdf(PurchaseOrderDocument po, ByteArrayOutputStream byteArrayOutputStream, String institutionName) {
         if (LOG.isDebugEnabled()) {
             LOG.debug("generatePOQuoteRequestsListPDF() started for po number " + po.getPurapDocumentIdentifier());
         }
 
         Collection errors = new ArrayList();
 
         try {
             Document doc = this.getDocument();
             PdfWriter writer = PdfWriter.getInstance(doc, byteArrayOutputStream);
             this.createPOQuoteRequestsListPdf(po, doc, writer, institutionName);
         } catch (DocumentException de) {
             LOG.error(de.getMessage(), de);
             errors.add(de.getMessage());
         }
         return errors;
     }
 
     /**
      * Invokes the createPOQuoteRequestsListPdf method to create a purchase order quote list request pdf document
      * and saves it into a file which name and location are specified in the input parameters.
      *
      * @param po              The PurchaseOrderDocument to be used to generate the pdf.
      * @param pdfFileLocation The location to save the pdf file.
      * @param pdfFilename     The name for the pdf file.
      * @param institutionName The purchasing institution name.
      * @return Collection of errors which are made of the messages from DocumentException.
      */
     public Collection savePOQuoteRequestsListPdf(PurchaseOrderDocument po, String pdfFileLocation, String pdfFilename, String institutionName) {
         if (LOG.isDebugEnabled()) {
             LOG.debug("savePOQuoteRequestsListPDF() started for po number " + po.getPurapDocumentIdentifier());
         }
 
         Collection errors = new ArrayList();
 
         try {
             Document doc = this.getDocument();
             PdfWriter writer = PdfWriter.getInstance(doc, new FileOutputStream(pdfFileLocation + pdfFilename));
             this.createPOQuoteRequestsListPdf(po, doc, writer, institutionName);
         } catch (DocumentException de) {
             LOG.error(de.getMessage(), de);
             errors.add(de.getMessage());
         } catch (FileNotFoundException f) {
             LOG.error(f.getMessage(), f);
             errors.add(f.getMessage());
         }
         return errors;
     }
 
     /**
      * Deletes an already created PDF.
      *
      * @param pdfFileLocation The location to save the pdf file.
      * @param pdfFilename     The name for the pdf file.
      */
     public void deletePdf(String pdfFileLocation, String pdfFilename) {
         if (LOG.isDebugEnabled()) {
             LOG.debug("deletePdf() started for po pdf file: " + pdfFilename);
         }
 
         File f = new File(pdfFileLocation + pdfFilename);
         f.delete();
     }
 
     /**
      * Creates the pdf using given input parameters.
      *
      * @param po       The PurchaseOrderDocument to be used to create the pdf.
      * @param document The pdf document whose margins have already been set.
      * @param writer   The PdfWriter to write the pdf document into.
      * @param instName The purchasing institution name
      * @throws DocumentException
      */
     private void createPOQuoteRequestsListPdf(PurchaseOrderDocument po, Document document, PdfWriter writer, String instName) throws DocumentException {
         if (LOG.isDebugEnabled()) {
             LOG.debug("createPOQuoteRequestsListPdf() started for po number " + po.getPurapDocumentIdentifier());
         }
 
         // These have to be set because they are used by the onOpenDocument() method.
         this.po = po;
 
         // Turn on the page events that handle the header and page numbers.
         PurchaseOrderPdf events = new PurchaseOrderPdf().getPageEvents();
         writer.setPageEvent(this); // Passing in "this" lets it know about the po, campusName, etc.
 
         document.open();
 
         PdfPCell cell;
         Paragraph p = new Paragraph();
 
         float[] headerWidths = {0.25f, 0.25f, 0.25f, 0.25f};
         headerTable = new PdfPTable(headerWidths);
         headerTable.setWidthPercentage(100);
         headerTable.setHorizontalAlignment(Element.ALIGN_CENTER);
 
         headerTable.getDefaultCell().setBorderWidth(0);
         headerTable.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER);
         headerTable.getDefaultCell().setVerticalAlignment(Element.ALIGN_CENTER);
 
         // New row
         cell = new PdfPCell(new Paragraph(instName + "\nRequest for Quotation Vendor List\n\n", titleFont));
         cell.setBorderWidth(0);
         cell.setHorizontalAlignment(Element.ALIGN_CENTER);
         cell.setColspan(4);
         headerTable.addCell(cell);
 
         // New row
         cell = new PdfPCell(new Paragraph("PO Number: " + po.getPurapDocumentIdentifier(), cellTextFont));
         cell.setHorizontalAlignment(Element.ALIGN_CENTER);
         cell.setBorderWidth(0);
         headerTable.addCell(cell);
 
         cell = new PdfPCell(new Paragraph("Req. Number: " + po.getRequisitionIdentifier(), cellTextFont));
         cell.setHorizontalAlignment(Element.ALIGN_CENTER);
         cell.setBorderWidth(0);
         headerTable.addCell(cell);
 
         // Date format pattern: MM-dd-yyyy
         SimpleDateFormat sdf = PurApDateFormatUtils.getSimpleDateFormat(PurapConstants.NamedDateFormats.KUALI_SIMPLE_DATE_FORMAT_2);
         Date today = SpringContext.getBean(DateTimeService.class).getCurrentSqlDate();
         cell = new PdfPCell(new Paragraph("Printed: " + sdf.format(today), cellTextFont));
         cell.setBorderWidth(0);
         cell.setHorizontalAlignment(Element.ALIGN_CENTER);
         headerTable.addCell(cell);
 
         if (po.getPurchaseOrderQuoteDueDate() != null) {
             Date dueDate = po.getPurchaseOrderQuoteDueDate();
             cell = new PdfPCell(new Paragraph("Due: " + sdf.format(dueDate) + "\n\n", cellTextFont));
         } else {
             cell = new PdfPCell(new Paragraph("Due: N/A\n\n", cellTextFont));
         }
         cell.setBorderWidth(0);
         cell.setHorizontalAlignment(Element.ALIGN_CENTER);
         headerTable.addCell(cell);
 
         document.add(headerTable);
 
         // ***** List table *****
         LOG.debug("createPOQuoteRequestsListPdf() list table started.");
         float[] listWidths = {0.20f, 0.20f, 0.20f, 0.20f, 0.20f};
         PdfPTable listTable = new PdfPTable(listWidths);
         listTable.setWidthPercentage(100);
         listTable.setHorizontalAlignment(Element.ALIGN_CENTER);
 
         cell = new PdfPCell(new Paragraph("Vendor Name", cellTextFont));
         cell.setHorizontalAlignment(Element.ALIGN_LEFT);
         cell.setBorderWidth(0);
         listTable.addCell(cell);
         cell = new PdfPCell(new Paragraph("City", cellTextFont));
         cell.setHorizontalAlignment(Element.ALIGN_LEFT);
         cell.setBorderWidth(0);
         listTable.addCell(cell);
         cell = new PdfPCell(new Paragraph("Attention", cellTextFont));
         cell.setHorizontalAlignment(Element.ALIGN_LEFT);
         cell.setBorderWidth(0);
         listTable.addCell(cell);
         cell = new PdfPCell(new Paragraph("Fax #", cellTextFont));
         cell.setHorizontalAlignment(Element.ALIGN_LEFT);
         cell.setBorderWidth(0);
         listTable.addCell(cell);
         cell = new PdfPCell(new Paragraph("Received", cellTextFont));
         cell.setHorizontalAlignment(Element.ALIGN_LEFT);
         cell.setBorderWidth(0);
         listTable.addCell(cell);
 
         // The line under the headings.
         cell = new PdfPCell(new Paragraph(" ", cellTitleFont));
         cell.setFixedHeight(1);
         cell.setColspan(5);
         listTable.addCell(cell);
 
         for (PurchaseOrderVendorQuote poqv : po.getPurchaseOrderVendorQuotes()) {
             cell = new PdfPCell(new Paragraph(poqv.getVendorName(), cellTextFont));
             cell.setHorizontalAlignment(Element.ALIGN_LEFT);
             cell.setBorderWidth(0);
             listTable.addCell(cell);
             if (poqv.getVendorStateCode() != null) {
                 cell = new PdfPCell(new Paragraph(poqv.getVendorCityName() + ", " + poqv.getVendorStateCode(), cellTextFont));
             } else if (poqv.getVendorCountryCode() != null) {
                 cell = new PdfPCell(new Paragraph(poqv.getVendorCityName() + ", " + poqv.getVendorCountryCode(), cellTextFont));
             } else {
                 cell = new PdfPCell(new Paragraph(poqv.getVendorCityName(), cellTextFont));
             }
             cell.setHorizontalAlignment(Element.ALIGN_LEFT);
             cell.setBorderWidth(0);
             listTable.addCell(cell);
             cell = new PdfPCell(new Paragraph(poqv.getVendorAttentionName(), cellTextFont));
             cell.setHorizontalAlignment(Element.ALIGN_LEFT);
             cell.setBorderWidth(0);
             listTable.addCell(cell);
             cell = new PdfPCell(new Paragraph(poqv.getVendorFaxNumber(), cellTextFont));
             cell.setHorizontalAlignment(Element.ALIGN_LEFT);
             cell.setBorderWidth(0);
             listTable.addCell(cell);
             cell = new PdfPCell(new Paragraph("__________", cellTextFont));
             cell.setHorizontalAlignment(Element.ALIGN_LEFT);
             cell.setBorderWidth(0);
             listTable.addCell(cell);
         }
 
         document.add(listTable);
 
         document.close();
         LOG.debug("createPOQuoteRequestsListPdf()pdf document closed.");
     } // End of createQuotePdf()
 }