/*
 * [CMPApplet.java]
 *
 * Summary: Generate HTML to invoke a stanrdard CMP 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:
 *  1.0 2009-04-28 initial version
 *  1.1 2009-04-28 put Java version up front
 */
package com.mindprod.htmlmacros.macro;

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

import static com.mindprod.htmlmacros.macro.Global.configuration;
import static java.lang.System.*;

/**
 * Generate HTML to invoke a stanrdard CMP Applet.
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.1 2009-04-28 put Java version up front
 * @see com.mindprod.htmlmacros.macro.CurrCon
 * @since 2009
 */
public final class CMPApplet extends Macro
    {
    /**
     * suffix for a tag
     */
    private static final String TAG_TAIL = ">\n";

    /**
     * how to use the macro, nothing to do with signed/unsigned. Java figures that out from the jar.
     */
    private static final String USAGE = "\ntry <!-- macro CMPApplet JDK(e.g. 1.7) package class(no .class) width height" +
                                        " {<params as one parm} -->";
    // TODO: implement the <PARAM as x=y pairs on the macro line.
    // TODO: add some sort of image and jump to java if no Java installed.
    // TODO: document this macro
    // TODO: get rid of NOJAVA macro

    /**
     * @param pk        last leg of package
     * @param className main-Class without package or .class
     * @param width     width of Applet window
     * @param height    height of Applet window
     * @param jdk       JDK version required e.g. "1.6" without trailing +
     * @param params    additional parms e.g. <param name=\"colour\" value="orange">
     *
     * @return expanded macro HTML
     */
    private String expandWithHTML4( String pk, String className, int width, int height, String jdk, String params )
        {
        final FastCat sb = new FastCat( 20 );
        sb.append( "<applet class=\"cmp\" archive=\"" );
        sb.append( Tools.relativeURL( "applet/" + className.toLowerCase() + ".jar", fileBeingDistributed ) );
        sb.append( "\" code=\"com.mindprod." );
        sb.append( pk );
        sb.append( "." );
        sb.append( className );
        sb.append( "\" width=\"" );
        sb.append( width );
        sb.append( "\" height=\"" );
        sb.append( height );
        sb.append( "\"  alt=\"You need Java " );
        sb.append( jdk );
        sb.append( " or later to run this Applet.\"" );
        sb.append( TAG_TAIL );
        sb.append( params );
        sb.append( "Sorry, you need Java " );
        sb.append( jdk );
        sb.append( " or later to run this Applet." );
        sb.append( "\n</applet>" );
        return sb.toString();
        }

    /**
     * @param pk        last leg of package
     * @param className main-Class without package or .class
     * @param width     width of Applet window
     * @param height    height of Applet window
     * @param jdk       JDK version required e.g. "1.6" without trailing +
     * @param params    additonal parms e.g. <param name=\"colour\" value="orange">
     *
     * @return expanded macro HTML
     */
    private String expandWithHTML5( String pk, String className, int width, int height, String jdk, String params )
        {
        // generate something like this
        //        <object type="application/x-java-applet" height="300" width="550">
        //        <param name="code" value="com.mindprod.wassup.Wassup" />
        //        <param name="archive" value="wassup.jar" />
        //
        // Applet failed to run.  No Java plug-in was found.
        //        </object>
        final FastCat sb = new FastCat( 36 );
        sb.append( "<object class=\"cmp\" type=\"application/x-java-applet\"" );
        sb.append( " data=\"", Tools.relativeURL( "applet/" + className.toLowerCase() + ".jar", fileBeingDistributed ), "\"" );
        sb.append( " typemustmatch" );
        sb.append( " width=\"", width, "\" height=\"", height, "\">\n" );
        sb.append( "<param name=\"code\" value=\"com.mindprod.", pk, ".", className, "\">\n" );
        sb.append( "<param name=\"archive\" value=\"", Tools.relativeURL( "applet/" + className.toLowerCase() + ".jar", fileBeingDistributed ), "\">\n" );
        sb.append( params );
        sb.append( "Applet failed to run.  No Java ", jdk, " or later plug-in found.\n" );
        sb.append( "</object>\n" );
        return sb.toString();
        }

    /**
     * Generate an Applet invocation for a CMP standard Applet where the jar is in the /applet directory.
     * <p/>
     * <!-- macro CMPApplet comparatorcutter ComparatorCutter 900 500 1.6 {<param name=\"colour\" value="orange">} -->
     *
     * @param parms   show currency amount level.
     * @param quiet   true if want output suppressed.
     * @param verbose @return expanded macro HTML
     */
    public String expandMacro( String[] parms,
                               final boolean quiet, final boolean verbose )
        {
        if ( !quiet )
            {
            out.print( "A" );
            }
        if ( !( 5 <= parms.length && parms.length <= 6 ) )
            {
            throw new IllegalArgumentException( USAGE );
            }
        try
            {
            int p = 0;
            final String jdk = parms[ p++ ];
            if ( jdk.indexOf( '.' ) < 0 )
                {
                throw new IllegalArgumentException( USAGE );
                }
            String pk = parms[ p++ ];
            if ( pk.indexOf( '.' ) >= 0 )
                {
                throw new IllegalArgumentException( USAGE );
                }
            String className = parms[ p++ ];
            if ( className.indexOf( '.' ) >= 0 )
                {
                throw new IllegalArgumentException( USAGE );
                }
            final int width = Integer.parseInt( parms[ p++ ] );
            final int height = Integer.parseInt( parms[ p++ ] );
            final String params = parms.length > p ? parms[ p ] : "";
            if ( configuration.isUsingHTML5( fileBeingDistributed ) )
                {
                return expandWithHTML5( pk, className, width, height, jdk, params );
                }
            else
                {
                return expandWithHTML4( pk, className, width, height, jdk, params );
                }
            }
        catch ( NumberFormatException e )
            {
            throw new IllegalArgumentException( USAGE );
            }
        }
    }