package com.xeiam.xchange.kraken.dto.marketdata;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
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.annotation.JsonDeserialize;
import com.xeiam.xchange.kraken.dto.marketdata.KrakenPublicTrades.KrakenTradesDeserializer;
import com.xeiam.xchange.kraken.dto.trade.KrakenOrderType;
import com.xeiam.xchange.kraken.dto.trade.KrakenType;
@JsonDeserialize(using = KrakenTradesDeserializer.class)
public class KrakenPublicTrades {
private final List<KrakenPublicTrade> trades;
private final long last;
public KrakenPublicTrades(List<KrakenPublicTrade> trades, long last) {
this.trades = trades;
this.last = last;
}
public long getLast() {
return last;
}
public List<KrakenPublicTrade> getTrades() {
return trades;
}
@Override
public String toString() {
return "KrakenTrades [trades=" + trades + ", last=" + last + "]";
}
static class KrakenTradesDeserializer extends JsonDeserializer<KrakenPublicTrades> {
@Override
public KrakenPublicTrades deserialize(JsonParser jsonParser, DeserializationContext ctxt) throws IOException, JsonProcessingException {
List<KrakenPublicTrade> krakenTrades = new ArrayList<KrakenPublicTrade>();
long last = 0;
ObjectCodec oc = jsonParser.getCodec();
JsonNode node = oc.readTree(jsonParser);
Iterator<Entry<String, JsonNode>> tradesResultIterator = node.fields();
while (tradesResultIterator.hasNext()) {
Entry<String, JsonNode> entry = tradesResultIterator.next();
String key = entry.getKey();
JsonNode value = entry.getValue();
if (key == "last") {
last = value.asLong();
}
else if (value.isArray()) {
for (JsonNode tradeJsonNode : value) {
BigDecimal price = new BigDecimal(tradeJsonNode.path(0).asText());
BigDecimal volume = new BigDecimal(tradeJsonNode.path(1).asText());
double time = tradeJsonNode.path(2).asDouble();
KrakenType type = KrakenType.fromString(tradeJsonNode.path(3).asText());
KrakenOrderType orderType = KrakenOrderType.fromString(tradeJsonNode.path(4).asText());
String miscellaneous = tradeJsonNode.path(5).asText();
krakenTrades.add(new KrakenPublicTrade(price, volume, time, type, orderType, miscellaneous));
}
}
}
return new KrakenPublicTrades(krakenTrades, last);
}
}
}