package com.xeiam.xchange.cryptotrade.dto;
import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.ObjectCodec;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.xeiam.xchange.cryptotrade.dto.marketdata.CryptoTradeTicker;
import com.xeiam.xchange.currency.CurrencyPair;
import com.xeiam.xchange.utils.jackson.CurrencyPairDeserializer;
public class CryptoTradeTickersDeserializer extends JsonDeserializer<Map<CurrencyPair, CryptoTradeTicker>> {
@Override
public Map<CurrencyPair, CryptoTradeTicker> deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
final ObjectCodec oc = jp.getCodec();
final JsonNode rootNode = oc.readTree(jp);
final Map<CurrencyPair, CryptoTradeTicker> tickers = new HashMap<CurrencyPair, CryptoTradeTicker>();
if (rootNode.size() == 1) {
final ObjectNode dataNode = (ObjectNode) rootNode.get(0);
final Iterator<Entry<String, JsonNode>> tickersArray = dataNode.fields();
while (tickersArray.hasNext()) {
final Entry<String, JsonNode> tickerData = tickersArray.next();
final CurrencyPair pair = CurrencyPairDeserializer.getCurrencyPairFromString(tickerData.getKey());
final CryptoTradeTicker ticker = CryptoTradeTickerDeserializer.getTickerFromJsonNode(tickerData.getValue());
tickers.put(pair, ticker);
}
}
return tickers;
}
}