batm_public/server_extensions_extra/src/main/java/com/generalbytes/batm/server/extensions/extra/dash/sources/coinmarketcap/CoinmarketcapRateSource.java

package com.generalbytes.batm.server.extensions.extra.dash.sources.coinmarketcap;

import com.generalbytes.batm.server.extensions.Currencies;
import com.generalbytes.batm.server.extensions.IRateSource;

import java.math.BigDecimal;
import java.util.HashSet;
import java.util.Set;
import java.util.HashMap;
import si.mazi.rescu.RestProxyFactory;

/**
 * Created by kkyovsky on 11/29/17.
 */

public class CoinmarketcapRateSource implements IRateSource {
    private ICoinmarketcapAPI api;
    private static HashMap<String,Integer> coinIDs = new HashMap<String, Integer>();
    private String preferredFiatCurrency = Currencies.USD;

    public CoinmarketcapRateSource(String preferedFiatCurrency) {
        this();
        if (Currencies.EUR.equalsIgnoreCase(preferedFiatCurrency)) {
            this.preferredFiatCurrency = Currencies.EUR;
        }
        if (Currencies.USD.equalsIgnoreCase(preferedFiatCurrency)) {
            this.preferredFiatCurrency = Currencies.USD;
        }
        if (Currencies.CAD.equalsIgnoreCase(preferedFiatCurrency)) {
            this.preferredFiatCurrency = Currencies.CAD;
        }
        coinIDs.put(Currencies.BTC, 1);
        coinIDs.put(Currencies.SYS, 541);
        coinIDs.put(Currencies.BCH, 1831);
        coinIDs.put(Currencies.BTX, 1654);
        coinIDs.put(Currencies.LTC, 2);
        coinIDs.put(Currencies.ETH, 1027);
        coinIDs.put(Currencies.DASH, 131);
        coinIDs.put(Currencies.XMR, 328);
        coinIDs.put(Currencies.POT, 122);
        coinIDs.put(Currencies.FLASH, 1755);
    }

    public CoinmarketcapRateSource() {
        api = RestProxyFactory.createProxy(ICoinmarketcapAPI.class, "https://api.coinmarketcap.com");
    }

    @Override
    public Set<String> getCryptoCurrencies() {
        Set<String> result = new HashSet<String>();
        result.add(Currencies.BTC);
        result.add(Currencies.SYS);
        result.add(Currencies.BCH);
        result.add(Currencies.BTX);
        result.add(Currencies.LTC);
        result.add(Currencies.ETH);
        result.add(Currencies.DASH);
        result.add(Currencies.XMR);
        result.add(Currencies.POT);
        result.add(Currencies.FLASH);

        return result;
    }

    @Override
    public Set<String> getFiatCurrencies() {
        Set<String> result = new HashSet<String>();
        result.add(Currencies.USD);
        result.add(Currencies.CAD);
        result.add(Currencies.EUR);
        return result;
    }


    @Override
    public String getPreferredFiatCurrency() {
        return Currencies.USD;
    }


    @Override
    public BigDecimal getExchangeRateLast(String cryptoCurrency, String fiatCurrency) {
        if (!getFiatCurrencies().contains(fiatCurrency)) {
            return null;
        }
        Integer cryptoId = coinIDs.get(cryptoCurrency);
        if(cryptoId == null){
			return null;
        }

        Map<String, String> ticker = api.getTickers(cryptoId, fiatCurrency);
        JSONObject json = new JSONObject(ticker);
        System.out.printf( "JSON: %s", json.toString() );
        /*if (cryptoCurrency.equalsIgnoreCase(ticker.getSymbol())) {
            if (Currencies.EUR.equalsIgnoreCase(fiatCurrency)) {
                return ticker.getPrice_eur();
            }else if (Currencies.CAD.equalsIgnoreCase(fiatCurrency)) {
                return ticker.getPrice_cad();
            }
            else{
				return ticker.getPrice_usd();
            }
        }*/
        return 0;
    }
}