org.knowm.xchange.coinbase.dto.serialization.CoinbaseCentsDeserializer Maven / Gradle / Ivy

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XChange implementation for Coinbase

There is a newer version: 5.2.1

package org.knowm.xchange.coinbase.dto.serialization;

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 java.io.IOException;
import java.math.BigDecimal;
import org.knowm.xchange.coinbase.dto.marketdata.CoinbaseMoney;

/** @author jamespedwards42 */
public class CoinbaseCentsDeserializer extends JsonDeserializer {

  public static CoinbaseMoney getCoinbaseMoneyFromCents(JsonNode node) {

    final String amount = node.path("cents").asText();
    final String currency = node.path("currency_iso").asText();
    final int numDecimals = (currency.equalsIgnoreCase("BTC")) ? 8 : 2;

    return new CoinbaseMoney(currency, new BigDecimal(amount).movePointLeft(numDecimals));
  }

  @Override
  public CoinbaseMoney deserialize(JsonParser jp, DeserializationContext ctxt)
      throws IOException, JsonProcessingException {

    final ObjectCodec oc = jp.getCodec();
    final JsonNode node = oc.readTree(jp);

    return getCoinbaseMoneyFromCents(node);
  }
}