package WayofTime.bloodmagic.util.helper;

import java.util.TreeMap;

public class NumeralHelper {

    private static final TreeMap<Integer, String> romanNumerals = new TreeMap<Integer, String>();

    static {
        romanNumerals.put(1000, "M" );
        romanNumerals.put(900 , "CM");
        romanNumerals.put(500 , "D" );
        romanNumerals.put(400 , "CD");
        romanNumerals.put(100 , "C" );
        romanNumerals.put(90  , "XC");
        romanNumerals.put(50  , "L" );
        romanNumerals.put(40  , "XL");
        romanNumerals.put(10  , "X" );
        romanNumerals.put(9   , "IX");
        romanNumerals.put(5   , "V" );
        romanNumerals.put(4   , "IV");
        romanNumerals.put(1   , "I" );
    }

    public static String toRoman(int arabic) {
        int convert = romanNumerals.floorKey(arabic);
        if (arabic == convert)
            return romanNumerals.get(convert);

        return romanNumerals.get(convert) + toRoman(arabic - convert);
    }
}