/*
 * [RenderWithApplet.java]
 *
 * Summary: Renders a string of tokens, usually representing Java source code with the JDisplay Applet.
 *
 * Copyright: (c) 2009-2017 Roedy Green, Canadian Mind Products, http://mindprod.com
 *
 * Licence: This software may be copied and used freely for any purpose but military.
 *          http://mindprod.com/contact/nonmil.html
 *
 * Requires: JDK 1.8+
 *
 * Created with: JetBrains IntelliJ IDEA IDE http://www.jetbrains.com/idea/
 *
 * Version History:
 *  1.7 2009-04-12 shorter style names, improved highlighting.
 */
package com.mindprod.jdisplayaux;

import com.mindprod.fastcat.FastCat;
import com.mindprod.htmlmacros.support.Tools;
import com.mindprod.jdisplay.Footprint;

import java.io.File;

import static com.mindprod.htmlmacros.macro.Global.configuration;

/**
 * Renders a string of tokens, usually representing Java source code with the JDisplay Applet.
 * <p/>
 * Used by com.mindprod.htmlmacros.jdisplay to expand long
 * snippets via an Applet that reads the ser file.
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.7 2009-04-12 shorter style names, improved highlighting.
 * @since 2009
 */
final class RenderWithApplet
    {
    /**
     * expand a tokens to CSS-style HTML
     *
     * @param footprint            geometry of the snippet
     * @param snippetFilename      unqualified snippetFilename of the snippet.
     * @param fileBeingDistributed file we are inserting &lt;applet tags
     *
     * @return the equivalent markup HTML
     */
    static String expand( Footprint footprint,
                          String snippetFilename, File fileBeingDistributed
    )
        {
        int width = footprint.actualAPPLET_WIDTH;
        int height = footprint.actualAPPLET_HEIGHT;
        boolean hasBar = footprint.hasBar;
        if ( configuration.isUsingHTML5( fileBeingDistributed ) )
            {
            return expandUsingHTML5( snippetFilename, fileBeingDistributed, width, height, hasBar );
            }
        else
            {
            return expandUsingHTML4( snippetFilename, fileBeingDistributed, width, height, hasBar );
            }
        }

    private static String expandUsingHTML4( final String snippetFilename, final File fileBeingProcessed, final int width, final int height, final boolean hasBar )
        {
        final FastCat sb = new FastCat( 16 );
        sb.append( "<applet code=\"com.mindprod.jdisplay.JDisplay\" archive=\"" );
        sb.append( Tools.relativeURL( "applet/jdisplay.jar", fileBeingProcessed ) );
        sb.append( "\" width=\"" );
        sb.append( width );
        sb.append( "\" height=\"" );
        sb.append( height );
        sb.append( "\" alt=\"Java needed to display this code snippet.\" class=\"jdisplay\">\n" );
        sb.append( "<param name=\"bar\" value=\"" );
        sb.append( hasBar ? "true" : "false" );
        sb.append( "\">\n" );
        // figures out by itself if it needs scroll bars by examining footprint in *.ser file.
        sb.append( "<param name=\"snippet\" value=\"" );
        sb.append( snippetFilename );// without "snippet/ser/"
        sb.append( "\"><a href=\"" );
        // for those without Java, also for search engine spiders to
        // look at examples.
        sb.append( "snippet/" );// HTML needs the snippet/ to get the original
        sb.append( snippetFilename );
        sb.append( "\">view</a></applet>\n" );
        return sb.toString();
        }

    private static String expandUsingHTML5( final String snippetFilename, final File fileBeingDistributed, final int width, final int height, final boolean hasBar )
        {
        final FastCat sb = new FastCat( 24 );
        sb.append( "<object type=\"application/x-java-applet\"" );
        sb.append( " data=\"", Tools.relativeURL( "applet/jdisplay.jar", fileBeingDistributed ), "\"" );
        sb.append( " width=\"", width, "\" height=\"", height, "\">\n" );
        sb.append( "<param name=\"code\" value=\"com.mindprod.jdisplay.JDisplay\">\n" );
        sb.append( "<param name=\"archive\" value=\"", Tools.relativeURL( "applet/jdisplay.jar", fileBeingDistributed ), "\">\n" );
        sb.append( "<param name=\"bar\" value=\"", hasBar ? "true" : "false", "\">\n" );
        sb.append( "<param name=\"snippet\" value=\"", snippetFilename, "\">\n" );
        sb.append( "<a href=\"snippet/", snippetFilename, "\">view</a></object>\n" );
        return sb.toString();
        }
    }