/*
 * [JavaCC.java]
 *
 * Summary: Expands HTML JavaCC macro, formats data about JavaCC grammars in a table.
 *
 * Copyright: (c) 2011-2017 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:
 *  1.8 2011-02-05 initial version.
 */
package com.mindprod.htmlmacros.macro;

import com.mindprod.common18.BigDate;
import com.mindprod.fastcat.FastCat;
import com.mindprod.htmlmacros.support.BuildImage;
import com.mindprod.htmlmacros.support.ImageAlignment;

import java.util.regex.Pattern;

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

/**
 * Expands HTML JavaCC macro, formats data about JavaCC grammars in a table.
 * <p/>
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.8 2011-02-05 initial version.
 * @noinspection WeakerAccess
 * @since 2011-02-05
 */
public final class JavaCC extends Macro
    {
    /** how to use the macro */
    /**
     * how to use the macro
     */
    private static final String USAGE = "\nJavaCC macro needs grammar url cache email author releasedDate version desc";

    private static final Pattern SPLIT_ON_COMMA = Pattern.compile( "\\s*,\\s*" );

    /**
     * Generate macro expansion for javacc macro.
     *
     * @param parms   <!-- macro JavaCC http:place.com/ada9x ada9x.jj Ada callahan@csee.wvu.edu "John R. Callahan"
     *                1998-06-04 version {Rudimentary Ada9x grammar.} --> .
     * @param quiet   true if should suppress output
     * @param verbose true if should provide extra output
     *
     * @return expanded text in the form of a table entry.
     */
    @SuppressWarnings( { "UnusedAssignment" } )
    public final String expandMacro( String[] parms, final boolean quiet, final boolean verbose )
        {
        if ( !quiet )
            {
            out.print( "J" );
            }
        if ( parms.length != 8 )
            {
            throw new IllegalArgumentException( USAGE );
            }
        final String grammar = parms[ 0 ];
        if ( grammar.equals( "grammar" ) || grammar.equals( "-" ) || grammar.length() == 0 )
            {
            throw new IllegalArgumentException( "JavaCC grammar field cannot be empty" );
            }
        String url = parms[ 1 ];
        if ( url.equals( "url" ) || url.equals( "-" ) || url.length() == 0 )
            {
            url = null;
            }
        else if ( !url.startsWith( "http" ) )
            {
            throw new IllegalArgumentException( "JavaCC url must start with http: " + url );
            }
        String cache = parms[ 2 ];
        if ( cache.equals( "cache" ) || cache.equals( "-" ) || cache.length() == 0 )
            {
            cache = null;
            }
        String email = parms[ 3 ];
        if ( email.equals( "email" ) || email.equals( "mailto" ) || email.equals( "-" ) || email.length() == 0 )
            {
            email = null;
            }
        else
            {
            email = email.toLowerCase();
            }
        String author = parms[ 4 ];
        if ( author.equals( "author" ) || author.equals( "-" ) )
            {
            author = "";
            }
        String released = parms[ 5 ];
        if ( released.equals( "released" ) || released.equals( "date" ) || released.equals( "-" ) )
            {
            released = "";
            }
        else if ( !BigDate.isValid( released ) )
            {
            throw new IllegalArgumentException( "JavaCC macro: invalid release date: " + released );
            }
        String version = parms[ 6 ];
        if ( version.equals( "version" ) || version.equals( "-" ) )
            {
            version = "";
            }
        final String desc = parms[ 7 ];
        final FastCat sb = new FastCat( 21 + 6 * 6 );
        sb.append( "<tr><td class=\"behold\">" );
        sb.append( grammar );
        sb.append( "</td><td>" );
        if ( url != null )
            {
            String cssClass = Global.assignCSSClasses.assignCSSClass( url, fileBeingDistributed );
            if ( cssClass != null )
                {
                sb.append( "<a class=\"" );
                sb.append( cssClass );
                sb.append( "\" " );
                }
            else
                {
                sb.append( "<a " );
                }
            sb.append( "href=\"" );
            sb.append( url );
            sb.append( "\">download</a>" );
            }
        if ( cache != null )
            {
            if ( url != null )
                {
                sb.append( configuration.getBr() );
                }
            sb.append( "<a class=\"javacc\" href=\"../javacc/" );
            sb.append( cache );
            sb.append( "\">download</a>" );
            }
        sb.append( "</td><td>" );
        if ( email != null )
            {
            final String[] emails = SPLIT_ON_COMMA.split( email );
            final String[] authors = SPLIT_ON_COMMA.split( author );
            if ( emails.length != authors.length )
                {
                throw new IllegalArgumentException( "JavaCC unequal number of email addresses and authors" );
                }
            for ( int i = 0; i < emails.length; i++ )
                {
                if ( i != 0 )
                    {
                    sb.append( configuration.getBr() );
                    }
                if ( emails[ i ].indexOf( '@' ) >= 0 )
                    {
                    // mailto style
                    sb.append( "<a class=\"mailto\" href=\"mailto:" );
                    sb.append( emails[ i ] );
                    sb.append( "\">" );
                    sb.append( authors[ i ] );
                    sb.append( "</a>" );
                    }
                else
                    {
                    // masker style
                    sb.append( authors[ i ] );
                    sb.append( " " );
                    sb.append( BuildImage.buildImgTag( "mailto/" + email + ".png",
                            "email " + authors[ i ],
                            ImageAlignment.none,
                            "mailto",
                            fileBeingDistributed ) );
                    }
                }
            }
        else
            {
            sb.append( author );
            }
        sb.append( "</td><td class=\"date\">" );
        sb.append( released );
        sb.append( "</td><td class=\"version\">" );
        sb.append( version );
        sb.append( "</td><td>" );
        sb.append( desc );
        sb.append( "</td></tr>\n" );
        return sb.toString();
        }
    } // end Reunion