package com.xeiam.xchange.btce.v3.service.polling;
import java.io.IOException;
import java.util.List;
import com.xeiam.xchange.ExchangeException;
import com.xeiam.xchange.ExchangeSpecification;
import com.xeiam.xchange.btce.v3.BTCEAdapters;
import com.xeiam.xchange.btce.v3.BTCEUtils;
import com.xeiam.xchange.btce.v3.dto.marketdata.BTCEDepthWrapper;
import com.xeiam.xchange.btce.v3.dto.marketdata.BTCETickerWrapper;
import com.xeiam.xchange.btce.v3.dto.marketdata.BTCETrade;
import com.xeiam.xchange.currency.CurrencyPair;
import com.xeiam.xchange.dto.marketdata.OrderBook;
import com.xeiam.xchange.dto.marketdata.Ticker;
import com.xeiam.xchange.dto.marketdata.Trades;
import com.xeiam.xchange.dto.trade.LimitOrder;
import com.xeiam.xchange.service.polling.PollingMarketDataService;
/**
* <p>
* Implementation of the market data service for BTCE
* </p>
* <ul>
* <li>Provides access to various market data values</li>
* </ul>
*/
public class BTCEMarketDataService extends BTCEMarketDataServiceRaw implements PollingMarketDataService {
/**
* @param exchangeSpecification The {@link ExchangeSpecification}
*/
public BTCEMarketDataService(ExchangeSpecification exchangeSpecification) {
super(exchangeSpecification);
}
@Override
public Ticker getTicker(CurrencyPair currencyPair, Object... args) throws IOException {
String pairs = com.xeiam.xchange.btce.v3.BTCEUtils.getPair(currencyPair);
BTCETickerWrapper btceTickerWrapper = getBTCETicker(pairs);
// Adapt to XChange DTOs
return BTCEAdapters.adaptTicker(btceTickerWrapper.getTicker(BTCEUtils.getPair(currencyPair)), currencyPair);
}
/**
* Get market depth from exchange
*
* @param tradableIdentifier The identifier to use (e.g. BTC or GOOG). First currency of the pair
* @param currency The currency of interest, null if irrelevant. Second currency of the pair
* @param args Optional arguments. Exchange-specific. This implementation assumes:
* Integer value from 1 to 2000 -> get corresponding number of items
* @return The OrderBook
* @throws IOException
*/
@Override
public OrderBook getOrderBook(CurrencyPair currencyPair, Object... args) throws IOException {
String pairs = com.xeiam.xchange.btce.v3.BTCEUtils.getPair(currencyPair);
BTCEDepthWrapper btceDepthWrapper = null;
if (args.length > 0) {
Object arg0 = args[0];
if (!(arg0 instanceof Integer) || ((Integer) arg0 < 1) || ((Integer) arg0 > FULL_SIZE)) {
throw new ExchangeException("Orderbook size argument must be an Integer in the range: (1, 2000)!");
}
else {
btceDepthWrapper = getBTCEDepth(pairs, (Integer) arg0);
}
}
else { // default to full orderbook
btceDepthWrapper = getBTCEDepth(pairs, FULL_SIZE);
}
// Adapt to XChange DTOs
List<LimitOrder> asks = BTCEAdapters.adaptOrders(btceDepthWrapper.getDepth(BTCEUtils.getPair(currencyPair)).getAsks(), currencyPair, "ask", "");
List<LimitOrder> bids = BTCEAdapters.adaptOrders(btceDepthWrapper.getDepth(BTCEUtils.getPair(currencyPair)).getBids(), currencyPair, "bid", "");
return new OrderBook(null, asks, bids);
}
/**
* Get recent trades from exchange
*
* @param tradableIdentifier The identifier to use (e.g. BTC or GOOG)
* @param currency The currency of interest
* @param args Optional arguments. This implementation assumes
* args[0] is integer value limiting number of trade items to get.
* -1 or missing -> use default 2000 max fetch value
* int from 1 to 2000 -> use API v.3 to get corresponding number of trades
* @return Trades object
* @throws IOException
*/
@Override
public Trades getTrades(CurrencyPair currencyPair, Object... args) throws IOException {
String pairs = com.xeiam.xchange.btce.v3.BTCEUtils.getPair(currencyPair);
int numberOfItems = -1;
try {
numberOfItems = (Integer) args[0];
} catch (ArrayIndexOutOfBoundsException e) {
// ignore, can happen if no arg given.
}
BTCETrade[] bTCETrades = null;
if (numberOfItems == -1) {
bTCETrades = getBTCETrades(pairs, FULL_SIZE).getTrades(com.xeiam.xchange.btce.v3.BTCEUtils.getPair(currencyPair));
}
else {
bTCETrades = getBTCETrades(pairs, numberOfItems).getTrades(com.xeiam.xchange.btce.v3.BTCEUtils.getPair(currencyPair));
}
return BTCEAdapters.adaptTrades(bTCETrades, currencyPair);
}
}