/*
    * This file is a part of the SchemaSpy project (http://schemaspy.sourceforge.net).
    * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 John Currier
    *
    * SchemaSpy is free software; you can redistribute it and/or
    * modify it under the terms of the GNU Lesser General Public
    * License as published by the Free Software Foundation; either
    * version 2.1 of the License, or (at your option) any later version.
    *
   * SchemaSpy 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
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
   */
  package net.sourceforge.schemaspy.view;
  
  import java.io.File;
  import java.io.IOException;
  import net.sourceforge.schemaspy.model.Table;
  import net.sourceforge.schemaspy.util.Dot;
  import net.sourceforge.schemaspy.util.LineWriter;
  
  public class HtmlTableDiagrammer extends HtmlDiagramFormatter {
      private static HtmlTableDiagrammer instance = new HtmlTableDiagrammer();
  
      private HtmlTableDiagrammer() {
      }
  
      public static HtmlTableDiagrammer getInstance() {
          return instance;
      }
  
      public boolean write(Table table, File diagramDir, LineWriter html) {
          File oneDegreeDotFile = new File(diagramDir, table.getName() + ".1degree.dot");
          File oneDegreeDiagramFile = new File(diagramDir, table.getName() + ".1degree.png");
          File twoDegreesDotFile = new File(diagramDir, table.getName() + ".2degrees.dot");
          File twoDegreesDiagramFile = new File(diagramDir, table.getName() + ".2degrees.png");
          File impliedDotFile = new File(diagramDir, table.getName() + ".implied2degrees.dot");
          File impliedDiagramFile = new File(diagramDir, table.getName() + ".implied2degrees.png");
  
          try {
              Dot dot = getDot();
              if (dot == null)
                  return false;
  
              String map = dot.generateDiagram(oneDegreeDotFile, oneDegreeDiagramFile);
  
              html.write("<br><form action='get'><b>Close relationships");
              if (twoDegreesDotFile.exists()) {
                  html.writeln("</b><span class='degrees' id='degrees' title='Detail diminishes with increased separation from " + table.getName() + "'>");
                  html.write("&nbsp;within <label for='oneDegree'><input type='radio' name='degrees' id='oneDegree' checked>one</label>");
                  html.write("  <label for='twoDegrees'><input type='radio' name='degrees' id='twoDegrees'>two degrees</label> of separation");
                  html.write("</span><b>:</b>");
                  html.writeln("</form>");
              } else {
                  html.write(":</b></form>");
              }
              html.write(map);
              map = null;
              html.writeln("  <a name='diagram'><img id='oneDegreeImg' src='../diagrams/" + encodeHref( oneDegreeDiagramFile.getName() ) + "' usemap='#oneDegreeRelationshipsDiagram' class='diagram' border='0' alt='' align='left'></a>");
  
              if (impliedDotFile.exists()) {
                  html.writeln(dot.generateDiagram(impliedDotFile, impliedDiagramFile));
                  html.writeln("  <a name='diagram'><img id='impliedTwoDegreesImg' src='../diagrams/" + encodeHref( impliedDiagramFile.getName() ) + "' usemap='#impliedTwoDegreesRelationshipsDiagram' class='diagram' border='0' alt='' align='left'></a>");
              } else {
                  impliedDotFile.delete();
                  impliedDiagramFile.delete();
              }
              if (twoDegreesDotFile.exists()) {
                  html.writeln(dot.generateDiagram(twoDegreesDotFile, twoDegreesDiagramFile));
                  html.writeln("  <a name='diagram'><img id='twoDegreesImg' src='../diagrams/" + encodeHref (twoDegreesDiagramFile.getName() ) + "' usemap='#twoDegreesRelationshipsDiagram' class='diagram' border='0' alt='' align='left'></a>");
              } else {
                  twoDegreesDotFile.delete();
                  twoDegreesDiagramFile.delete();
              }
          } catch (Dot.DotFailure dotFailure) {
              System.err.println(dotFailure);
              return false;
          } catch (IOException ioExc) {
              ioExc.printStackTrace();
              return false;
          }
  
          return true;
      }
  }