CurrencyConversion.java

package st.brothas.mtgoxwidget;

import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;

import static st.brothas.mtgoxwidget.CurrencyConversion.VirtualCurrency.LITECOIN;
import static st.brothas.mtgoxwidget.CurrencyConversion.VirtualCurrency.QUARK;

public enum CurrencyConversion {

    // Bitcoin
    BTC_USD(1, "BTC/USD", "$"),
    BTC_EUR(2, "BTC/EUR", "€"),
    BTC_GBP(3, "BTC/GBP", "£"),
    BTC_CAD(4, "BTC/CAD", "$"),
    BTC_AUD(5, "BTC/AUD", "$"),
    BTC_CNY(6, "BTC/CNY", "¥"),
    BTC_JPY(7, "BTC/JPY", "¥"),
    BTC_RUB(8, "BTC/RUB", "р"),
    BTC_SEK(9, "BTC/SEK", "k"),
    BTC_PLN(10,"BTC/PLN", "z"),
    BTC_ILS(11,"BTC/ILS", "₪"),

    // Litecoin
    LTC_BTC(106, "LTC/BTC", "฿", LITECOIN),
    LTC_USD(107, "LTC/USD", "$", LITECOIN),
    LTC_EUR(108, "LTC/EUR", "€", LITECOIN),
    LTC_CNY(109, "LTC/CNY", "¥", LITECOIN),

    // Quark
    QRK_BTC(206, "QRK/BTC", "฿", QUARK),
    QRK_CNY(207, "QRK/CNY", "¥", QUARK);

    public enum VirtualCurrency {BITCOIN, LITECOIN, QUARK}

    public final Integer id;
    public final String description;
    public final String symbol;
    public final VirtualCurrency virtualCurrency;
    private static final Map<Integer,CurrencyConversion> lookup = new HashMap<Integer,CurrencyConversion>();

    CurrencyConversion(int id, String description, String symbol) {
        this(id, description, symbol, VirtualCurrency.BITCOIN); // Default Bitcoin
    }

    CurrencyConversion(int id, String description, String symbol, VirtualCurrency virtualCurrency) {
        this.id = id;
        this.description = description;
        this.symbol = symbol;
        this.virtualCurrency = virtualCurrency;
    }

    static {
        for(CurrencyConversion s : EnumSet.allOf(CurrencyConversion.class))
            lookup.put(s.id, s);
    }


    public static CurrencyConversion getDefault() {
        return BTC_USD;
    }

    public static CurrencyConversion getById(int id) {
        return lookup.get(id);
    }
}