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package org.jlab.groot.ui;

import java.awt.font.TextAttribute;
import java.text.AttributedString;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.TreeMap;

/**
 *
 * @author gavalian
 */
public class LatexTextTools {
    
    private static Map  greekTranslation = getTable();
            
    public static Map getTable(){
        Map table = new LinkedHashMap();
        table.put("#alpha", "\u03B1");
        table.put("#beta" , "\u03B2");
        table.put("#gamma", "\u03B3");
        table.put("#delta"  , "\u03B4");
        table.put("#Delta"  , "\u0394");
        table.put("#eps"  , "\u03B5");
        table.put("#zeta"  , "\u03B6");
        table.put("#eta"  , "\u03B7");
        table.put("#kappa"  , "\u03BA");
        table.put("#lamda"  , "\u03BB");
        table.put("#mu"  , "\u03BC");
        table.put("#nu"  , "\u03BD");
        table.put("#xi"  , "\u03BE");
        table.put("#rho"  , "\u03C1");
        table.put("#sigma"  , "\u03C3");
        table.put("#tau"  , "\u03C4");
        table.put("#phi"  , "\u03C6");        
        table.put("#chi"  , "\u03C7");        
        table.put("#psi"  , "\u03C8");        
        table.put("#theta", "\u03B8");
        table.put("#omega", "\u03C9");
        table.put("#pi"   , "\u03C0");

        
        table.put("#Theta", "\u0398");
        
        table.put("#degree", "\u00B0");
        table.put("#rarrow"   , "\u2192");
        table.put("#larrow"   , "\u2190");
        table.put("#uarrow"   , "\u2191");
        table.put("#darrow"   , "\u2193");
        table.put("#overline" , "\u0305");
        table.put("#bar"   , "\u0304");
        
        return table;
    }
    
    public static String convertUnicode(String original){
        
        if(original.contains("#")==false&&original.contains("^")==false) return original;
        String newString = original;
        
        for(Map.Entry entry : LatexTextTools.greekTranslation.entrySet()){
            newString = newString.replaceAll(entry.getKey(), entry.getValue());
        }
        return newString;
    }
    
    
    public static AttributedString converSubScript(String line){
        ArrayList supindex = new ArrayList();
        ArrayList subindex = new ArrayList();
        int index = line.indexOf("^");
        String newString = line;
        while(index>=0){
            //System.out.println("adding index = " + index);
            supindex.add(index);
            //newString = newString.replaceFirst("^", "");
            newString = newString.substring(0, index) + newString.substring(index+1);
            index = newString.indexOf("_");
            //System.out.println(newString);
        }
        
        
                        
        AttributedString  string = new AttributedString(newString);
        
        for(Integer indx : supindex){
            if(indx>0){
                //System.out.println(" L = " + indx);
                string.addAttribute(TextAttribute.SUPERSCRIPT, TextAttribute.SUPERSCRIPT_SUPER, indx,indx+1);
            }
        }
        
        return string;
    }
    
    public static AttributedString converSuperScript(String line){
        ArrayList supindex = new ArrayList();
        int index = line.indexOf("^");
        String newString = line;
        while(index>=0){
            //System.out.println("adding index = " + index);
            supindex.add(index);
            //newString = newString.replaceFirst("^", "");
            newString = newString.substring(0, index) + newString.substring(index+1);
            index = newString.indexOf("^");
            //System.out.println(newString);
        }
        
        AttributedString  string = new AttributedString(newString);
        
        for(Integer indx : supindex){
            if(indx>0){
                //System.out.println(" L = " + indx);
                string.addAttribute(TextAttribute.SUPERSCRIPT, TextAttribute.SUPERSCRIPT_SUPER, indx,indx+1);
            }
        }        
        return string;
    }
    
    public static void main(String[] args){
        String text = "Value #theta (#alpha + #beta) = #gamma^2 = 5.0  #pi^3 = 3.14^5";
        String latex = LatexTextTools.convertUnicode(text);
        System.out.println(latex);
        
        AttributedString str = LatexTextTools.converSuperScript(latex);
    }
}