/*
 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
 * Copyright (C) $$Year-Rel$$ The Jalview Authors
 * 
 * This file is part of Jalview.
 * 
 * Jalview is free software: you can redistribute it and/or
 * modify it under the terms of the GNU General Public License 
 * as published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 *  
 * Jalview 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Jalview.  If not, see <http://www.gnu.org/licenses/>.
 * The Jalview Authors are detailed in the 'AUTHORS' file.
 */
package jalview.io;

import jalview.api.AlignExportSettingI;
import jalview.api.FeatureRenderer;
import jalview.datamodel.AlignmentExportData;
import jalview.gui.AlignViewport;
import jalview.gui.AlignmentPanel;
import jalview.gui.HTMLOptions;
import jalview.gui.IProgressIndicator;
import jalview.gui.OOMWarning;
import jalview.math.AlignmentDimension;
import jalview.util.MessageManager;

import java.awt.Graphics;
import java.awt.print.PrinterException;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import org.jfree.graphics2d.svg.SVGGraphics2D;
import org.jfree.graphics2d.svg.SVGHints;

public class HtmlSvgOutput
{
  AlignViewport av;

  FeatureRenderer fr;

  AlignmentPanel ap;

  private IProgressIndicator pIndicator;

  private long pSessionId;

  private boolean headless;

  public HtmlSvgOutput(AlignmentPanel ap)
  {
    this.av = ap.av;
    this.ap = ap;
    fr = ap.cloneFeatureRenderer();
  }

  public void generateHtmlSvgOutput(File file)
  {
    pIndicator = ap.alignFrame;
    pSessionId = System.currentTimeMillis();
    try
    {
      headless = (System.getProperty("java.awt.headless") != null && System
              .getProperty("java.awt.headless").equals("true"));
      if (file == null)
      {
        setProgressMessage(MessageManager.formatMessage(
                "status.waiting_for_user_to_select_output_file", "HTML"));
        JalviewFileChooser chooser = getHTMLChooser();
        chooser.setFileView(new jalview.io.JalviewFileView());
        chooser.setDialogTitle(ap.alignFrame.getTitle());
        chooser.setToolTipText(MessageManager.getString("action.save"));
        int value = chooser.showSaveDialog(ap.alignFrame);

        if (value == jalview.io.JalviewFileChooser.APPROVE_OPTION)
        {
          jalview.bin.Cache.setProperty("LAST_DIRECTORY", chooser
                  .getSelectedFile().getParent());
          file = chooser.getSelectedFile();
          ap.alignFrame.repaint();
        }
        else
        {
          setProgressMessage(MessageManager.formatMessage(
                  "status.cancelled_image_export_operation", "HTML"));
          return;
        }
      }
    } catch (Exception e)
    {
      pIndicator.setProgressBar(MessageManager.formatMessage(
              "info.error_creating_file", "HTML"), pSessionId);
      e.printStackTrace();
      return;
    }
    final File fileX = file;
    new Thread()
    {
      @Override
      public void run()
      {
        try
        {
          setProgressMessage(null);
          setProgressMessage(MessageManager.formatMessage(
                  "status.exporting_alignment_as_x_file", "HTML"));
          AlignmentDimension aDimension = ap.getAlignmentDimension();
          SVGGraphics2D idPanelGraphics = new SVGGraphics2D(
                  aDimension.getWidth(),
                  aDimension.getHeight());
          SVGGraphics2D alignPanelGraphics = new SVGGraphics2D(
                  aDimension.getWidth(),
                  aDimension.getHeight());

          String renderStyle = jalview.bin.Cache.getDefault(
                  "HTML_RENDERING", "Prompt each time");

          // If we need to prompt, and if the GUI is visible then
          // Prompt for rendering style
          if (renderStyle.equalsIgnoreCase("Prompt each time")
                  && !(System.getProperty("java.awt.headless") != null && System
                          .getProperty("java.awt.headless").equals("true")))
          {
            HTMLOptions svgOption = new HTMLOptions();
            renderStyle = svgOption.getValue();

            if (renderStyle == null || svgOption.cancelled)
            {
              setProgressMessage(MessageManager.formatMessage(
                      "status.cancelled_image_export_operation", "HTML"));
              return;
            }
          }

          if (renderStyle.equalsIgnoreCase("Lineart"))
          {
            idPanelGraphics.setRenderingHint(SVGHints.KEY_DRAW_STRING_TYPE,
                    SVGHints.VALUE_DRAW_STRING_TYPE_VECTOR);
            alignPanelGraphics.setRenderingHint(
                    SVGHints.KEY_DRAW_STRING_TYPE,
                    SVGHints.VALUE_DRAW_STRING_TYPE_VECTOR);
          }
          if (av.getWrapAlignment())
          {
            printWrapped(aDimension.getWidth(), aDimension.getHeight(), 0,
                    alignPanelGraphics);
          }
          else
          {
          printUnwrapped(aDimension.getWidth(), aDimension.getHeight(), 0,
 idPanelGraphics, alignPanelGraphics);
          }

          String idPanelSvgData = idPanelGraphics.getSVGDocument();
          String alignPanelSvgData = alignPanelGraphics.getSVGDocument();
          String jsonData = null;
          boolean isEmbbedBioJSON = Boolean.valueOf(jalview.bin.Cache
                  .getDefault("EXPORT_EMBBED_BIOJSON", "true"));
          if (isEmbbedBioJSON)
          {
            AlignExportSettingI exportSettings = new AlignExportSettingI()
            {
              @Override
              public boolean isExportHiddenSequences()
              {
                return true;
              }

              @Override
              public boolean isExportHiddenColumns()
              {
                return true;
              }

              @Override
              public boolean isExportAnnotations()
              {
                return true;
              }

              @Override
              public boolean isExportFeatures()
              {
                return true;
              }

              @Override
              public boolean isExportGroups()
              {
                return true;
              }

              @Override
              public boolean isCancelled()
              {
                return false;
              }

            };
            AlignmentExportData exportData = jalview.gui.AlignFrame
                    .getAlignmentForExport(JSONFile.FILE_DESC, av,
                            exportSettings);
            jsonData = new FormatAdapter(ap, exportData.getSettings())
                    .formatSequences(JSONFile.FILE_DESC,
                            exportData.getAlignment(),
                            exportData.getOmitHidden(),
                            exportData.getStartEndPostions(),
                            av.getColumnSelection());
          }
          String htmlData = getHtml(idPanelSvgData, alignPanelSvgData, jsonData,
                  av.getWrapAlignment());
          FileOutputStream out = new FileOutputStream(fileX);
          out.write(htmlData.getBytes());
          out.flush();
          out.close();
          if (!(System.getProperty("java.awt.headless") != null && System
                  .getProperty("java.awt.headless").equals("true")))
          {
            jalview.util.BrowserLauncher.openURL("file:///" + fileX);
          }
        } catch (OutOfMemoryError err)
        {
          System.out.println("########################\n"
                  + "OUT OF MEMORY " + fileX + "\n"
                  + "########################");
          new OOMWarning("Creating Image for " + fileX, err);
        } catch (Exception e)
        {
          e.printStackTrace();
          pIndicator.setProgressBar(MessageManager.formatMessage(
                  "info.error_creating_file", "HTML"), pSessionId);
        }
        setProgressMessage(MessageManager.formatMessage(
                "status.export_complete", "HTML"));
      }
    }.start();

  }

  private void setProgressMessage(String message)
  {
    if (pIndicator != null && !headless)
    {
      pIndicator.setProgressBar(message, pSessionId);
    }
    else
    {
      System.out.println(message);
    }
  }

  static JalviewFileChooser getHTMLChooser()
  {
    return new jalview.io.JalviewFileChooser(
            jalview.bin.Cache.getProperty("LAST_DIRECTORY"),
            new String[] { "html" },
            new String[] { "Hypertext Markup Language" },
            "Hypertext Markup Language");
  }

  public int printUnwrapped(int pwidth, int pheight, int pi, Graphics... pg)
          throws PrinterException
  {
    return ap.printUnwrapped(pwidth, pheight, pi, pg);
  }

  public int printWrapped(int pwidth, int pheight, int pi, Graphics... pg)
          throws PrinterException
  {
    return ap.printWrappedAlignment(pwidth, pheight, pi, pg[0]);
  }

  private String getHtml(String titleSvg, String alignmentSvg,
          String jsonData, boolean wrapped)
  {
    StringBuilder htmlSvg = new StringBuilder();
    htmlSvg.append("<html>\n");
    if (jsonData != null)
    {
      htmlSvg.append("<button onclick=\"javascipt:openJalviewUsingCurrentUrl();\">Launch in Jalview</button> &nbsp;");
      htmlSvg.append("<input type=\"submit\" value=\"View raw BioJSON Data\" onclick=\"jQuery.facebox({ div:'#seqData' }); return false;\" />");
      htmlSvg.append("<div style=\"display: none;\" name=\"seqData\" id=\"seqData\" >"
              + jsonData + "</div>");
      htmlSvg.append("<br/>&nbsp;");
    }
    htmlSvg.append("\n<style type=\"text/css\"> "
            + "div.parent{ width:100%;<!-- overflow: auto; -->}\n"
            + "div.titlex{ width:11%; float: left; }\n"
            + "div.align{ width:89%; float: right; }\n"
            + "div.main-container{ border: 2px solid blue; border: 2px solid blue; width: 99%;   min-height: 99%; }\n"
            + ".sub-category-container {overflow-y: scroll; overflow-x: hidden; width: 100%; height: 100%;}\n"
            + "object {pointer-events: none;}");
    if (jsonData != null)
    {
      // facebox style sheet for displaying raw BioJSON data
      htmlSvg.append("#facebox { position: absolute;  top: 0;   left: 0; z-index: 100; text-align: left; }\n"
              + "#facebox .popup{ position:relative; border:3px solid rgba(0,0,0,0); -webkit-border-radius:5px;"
              + "-moz-border-radius:5px; border-radius:5px; -webkit-box-shadow:0 0 18px rgba(0,0,0,0.4); -moz-box-shadow:0 0 18px rgba(0,0,0,0.4);"
              + "box-shadow:0 0 18px rgba(0,0,0,0.4); }\n"
              + "#facebox .content { display:table; width: 98%; padding: 10px; background: #fff; -webkit-border-radius:4px; -moz-border-radius:4px;"
              + " border-radius:4px; }\n"
              + "#facebox .content > p:first-child{ margin-top:0; }\n"
              + "#facebox .content > p:last-child{ margin-bottom:0; }\n"
              + "#facebox .close{ position:absolute; top:5px; right:5px; padding:2px; background:#fff; }\n"
              + "#facebox .close img{ opacity:0.3; }\n"
              + "#facebox .close:hover img{ opacity:1.0; }\n"
              + "#facebox .loading { text-align: center; }\n"
              + "#facebox .image { text-align: center;}\n"
              + "#facebox img { border: 0;  margin: 0; }\n"
              + "#facebox_overlay { position: fixed; top: 0px; left: 0px; height:100%; width:100%; }\n"
              + ".facebox_hide { z-index:-100; }\n"
              + ".facebox_overlayBG { background-color: #000;  z-index: 99;  }");
    }
    htmlSvg.append("</style>");
    if (!wrapped)
    {
    htmlSvg.append("<div class=\"main-container\" \n>");
    htmlSvg.append("<div class=\"titlex\">\n");
    htmlSvg.append("<div class=\"sub-category-container\"> \n");
    htmlSvg.append(titleSvg);
    htmlSvg.append("</div>");
    htmlSvg.append("</div>\n\n<!-- ========================================================================================== -->\n\n");
    htmlSvg.append("<div class=\"align\" >");
    htmlSvg.append(
            "<div class=\"sub-category-container\"> <div style=\"overflow-x: scroll;\">")
            .append(alignmentSvg).append("</div></div>").append("</div>");
    htmlSvg.append("</div>");

    htmlSvg.append("<script language=\"JavaScript\" type=\"text/javascript\" src=\"http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js\"></script>\n"
            + "<script language=\"JavaScript\" type=\"text/javascript\"  src=\"http://ajax.googleapis.com/ajax/libs/jqueryui/1.11.2/jquery-ui.min.js\"></script>\n"
            + "<script>\n"
            + "var subCatContainer = $(\".sub-category-container\");\n"
            + "subCatContainer.scroll(\nfunction() {\n"
            + "subCatContainer.scrollTop($(this).scrollTop());\n});\n");

    htmlSvg.append("</script>\n");
    }
    else
    {
      htmlSvg.append("<div>\n")
              .append(alignmentSvg).append("</div>");
      htmlSvg.append("<script language=\"JavaScript\" type=\"text/javascript\" src=\"http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js\"></script>\n"
              + "<script language=\"JavaScript\" type=\"text/javascript\"  src=\"http://ajax.googleapis.com/ajax/libs/jqueryui/1.11.2/jquery-ui.min.js\"></script>\n");

    }

    // javascript for launching file in Jalview

    htmlSvg.append("<script language=\"JavaScript\">\n");
    htmlSvg.append("function openJalviewUsingCurrentUrl(){\n");
    htmlSvg.append("    var json = JSON.parse(document.getElementById(\"seqData\").innerHTML);\n");
    htmlSvg.append("    var jalviewVersion = json['appSettings'].version;\n");
    htmlSvg.append("    var url = json['appSettings'].webStartUrl;\n");
    htmlSvg.append("    var myForm = document.createElement(\"form\");\n\n");
    htmlSvg.append("    var heap = document.createElement(\"input\");\n");
    htmlSvg.append("    heap.setAttribute(\"name\", \"jvm-max-heap\") ;\n");
    htmlSvg.append("    heap.setAttribute(\"value\", \"2G\");\n\n");
    htmlSvg.append("    var target = document.createElement(\"input\");\n");
    htmlSvg.append("    target.setAttribute(\"name\", \"open\");\n");
    htmlSvg.append("    target.setAttribute(\"value\", document.URL);\n\n");
    htmlSvg.append("    var jvVersion = document.createElement(\"input\");\n");
    htmlSvg.append("    jvVersion.setAttribute(\"name\", \"version\") ;\n");
    htmlSvg.append("    jvVersion.setAttribute(\"value\", jalviewVersion);\n\n");
    htmlSvg.append("    myForm.action = url;\n");
    htmlSvg.append("    myForm.appendChild(heap);\n");
    htmlSvg.append("    myForm.appendChild(target);\n");
    htmlSvg.append("    myForm.appendChild(jvVersion);\n");
    htmlSvg.append("    document.body.appendChild(myForm);\n");
    htmlSvg.append("    myForm.submit() ;\n");
    htmlSvg.append("    document.body.removeChild(myForm);\n");
    htmlSvg.append("}\n");

    // jquery facebox for displaying raw BioJSON data");
    if (jsonData != null)
    {
      File faceBoxJsFile = new File("examples/javascript/facebox-1.3.js");
      try
      {
        htmlSvg.append(HtmlFile.readFileAsString(faceBoxJsFile));
      } catch (IOException e)
      {
        e.printStackTrace();
      }
    }

    htmlSvg.append("</script>\n");
    htmlSvg.append("</html>");
    return htmlSvg.toString();
  }
}