/*  Copyright (C) 2003-2011 JabRef contributors.
    This program 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 2 of the License, or
    (at your option) any later version.

    This program 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 this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package net.sf.jabref.label;

import net.sf.jabref.AuthorList;
import net.sf.jabref.BibtexEntry;
import net.sf.jabref.BibtexFields;

public class ArticleLabelRule extends DefaultLabelRule {

    // this is the rule used handle articles
    // we try (first author last name)/(year)/(first unique journal word)
    public String applyRule(BibtexEntry oldEntry){
        String oldLabel = (oldEntry.getField(BibtexFields.KEY_FIELD)) ;
        String newLabel = "" ;

        String author="";

        //## to be done: i need to check if the key is unique else need to make another one with suffix
        try{
            author=oldEntry.getField("author");
            String[] tokens= author.split("\\band\\b");
            if( tokens.length > 0){ // if author is empty
                if(tokens[0].indexOf(",") > 0)
                    tokens[0] = AuthorList.fixAuthor_firstNameFirst( tokens[0] ); // convert lastname, firstname to firstname lastname
                String[] firstAuthor = tokens[0].replaceAll("\\s+"," ").split(" ");
                // lastname, firstname

                newLabel += firstAuthor[ firstAuthor.length-1];
            }
        }catch(Throwable t){
            System.out.println("error getting author: "+t) ;
        }

        // use the year token
        try{
            if( ! newLabel.equals("")){
                if( oldEntry.getField("year")!= null){
                    newLabel += String.valueOf( oldEntry.getField("year")) ;
                }
            }else
                newLabel=oldLabel; // don't make a key since there is no author
        }catch(Throwable t){
            System.out.println("error getting year: "+t) ;
        }

// now check for uniqueness
// i need access to basepanes: checkForDuplicateKey

//oldEntry.setField(Globals.KEY_FIELD,newLabel) ;
        return newLabel ;


/*
// use the journal name
// return the first token 4 wrds or longer, that's not journal
// , society, or the like (using the Keyword class)
try{

if(oldEntry.getField("journal") != null) {
authorTokens = new StringTokenizer( ((String) oldEntry.getField("journal")).replaceAll(","," ").replaceAll("/"," ")) ;
String tempString = authorTokens.nextToken() ;
tempString = tempString.replaceAll(",","") ;
boolean done = false ;
while(tempString!=null && !done ){
tempString = tempString.replaceAll(",","").trim() ;
if(tempString.trim().length() > 3 && !KeyWord.isKeyWord(tempString))  {
done = true ;
}
else{

if(authorTokens.hasMoreTokens()){
tempString = authorTokens.nextToken() ;
}else{
done = true ;
}
}
}

if(tempString!=null && (tempString.indexOf("null")<0) ){
newLabel += String.valueOf( tempString.toLowerCase()) ;
}
}
}
catch(Throwable t){  System.err.println(t) ; }
*/

    }


//    public static void main(String args[]){
//
//        System.out.println(args[0]) ;
//        BibtexEntry entry = new BibtexEntry("1",BibtexEntryType.ARTICLE) ;
//        entry.setField("journal",args[0]) ;
//        entry.setField("author","jones, b") ;
//        entry.setField("year","1984") ;
//        ArticleLabelRule rule = new ArticleLabelRule() ;
//        entry = rule.applyRule(entry) ;
//        System.out.println(entry.getField(BibtexBaseFrame.KEY_PROPERTY) );
//
//    }

}