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Updated on 2026-08-14

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Tangem 2020-04-20 13:23:07 +00:00
commit b4ff65950e
1 changed files with 66 additions and 8 deletions
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74
app/src/main/java/com/tangem/wallet/ltc/LtcEngine.java
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@ -23,6 +23,7 @@ import com.tangem.wallet.BTCUtils;
import com.tangem.wallet.BalanceValidator;
import com.tangem.wallet.Base58;
import com.tangem.wallet.CoinData;
import com.tangem.wallet.CoinEngine;
import com.tangem.wallet.R;
import com.tangem.wallet.TangemContext;
import com.tangem.wallet.Transaction;
@ -621,12 +622,74 @@ public class LtcEngine extends BtcEngine {
}
}
private final static BigDecimal relayFee = new BigDecimal(0.00001).setScale(8, RoundingMode.DOWN);
private final static Amount relayFee = new Amount(new BigDecimal(0.00001).setScale(8, RoundingMode.DOWN), "LTC");
private void forceRelayFeeMinimum(Amount fee) {
if (fee.compareTo(relayFee) < 0) {
fee = relayFee;
}
}
@Override
public void requestFee(BlockchainRequestsCallbacks blockchainRequestsCallbacks, String targetAddress, Amount amount) throws Exception {
coinData.minFee = coinData.normalFee = coinData.maxFee = new Amount(relayFee, "LTC");
blockchainRequestsCallbacks.onComplete(true);
final int calcSize = calculateEstimatedTransactionSize(targetAddress, amount.toValueString());
Log.e(TAG, String.format("Estimated tx size %d", calcSize));
coinData.minFee = null;
coinData.maxFee = null;
coinData.normalFee = null;
final ServerApiBlockcypher serverApiBlockcypher = new ServerApiBlockcypher();
ServerApiBlockcypher.ResponseListener blockcypherListener = new ServerApiBlockcypher.ResponseListener() {
@Override
public void onSuccess(String method, BlockcypherResponse blockcypherResponse) {
Log.e(TAG, "Wrong response type for requestFee");
ctx.setError("Wrong response type for requestFee");
blockchainRequestsCallbacks.onComplete(false);
}
public void onSuccess(String method, BlockcypherFee blockcypherFee) {
Log.i(TAG, "onSuccess: " + method);
try {
BigDecimal minByteFee = new BigDecimal(blockcypherFee.getLow_fee_per_kb()).divide(BigDecimal.valueOf(1024));
BigDecimal normalByteFee = new BigDecimal(blockcypherFee.getMedium_fee_per_kb()).divide(BigDecimal.valueOf(1024));
BigDecimal maxByteFee = new BigDecimal(blockcypherFee.getHigh_fee_per_kb()).divide(BigDecimal.valueOf(1024));
CoinEngine.InternalAmount minIntAmount = new CoinEngine.InternalAmount(minByteFee.multiply(BigDecimal.valueOf(calcSize)), "satoshi");
CoinEngine.InternalAmount normalIntAmount = new CoinEngine.InternalAmount(normalByteFee.multiply(BigDecimal.valueOf(calcSize)), "satoshi");
CoinEngine.InternalAmount maxIntAmount = new CoinEngine.InternalAmount(maxByteFee.multiply(BigDecimal.valueOf(calcSize)), "satoshi");
coinData.minFee = convertToAmount(minIntAmount);
coinData.normalFee = convertToAmount(normalIntAmount);
coinData.maxFee = convertToAmount(maxIntAmount);
forceRelayFeeMinimum(coinData.minFee);
forceRelayFeeMinimum(coinData.normalFee);
forceRelayFeeMinimum(coinData.maxFee);
} catch (Exception e) {
e.printStackTrace();
Log.e(TAG, "FAIL BLOCKCYPHER_FEE Exception");
}
if (serverApiBlockcypher.isRequestsSequenceCompleted()) {
blockchainRequestsCallbacks.onComplete(!ctx.hasError());
} else {
blockchainRequestsCallbacks.onProgress();
}
}
@Override
public void onFail(String method, String message) {
Log.i(TAG, "onFail: " + method + " " + message);
ctx.setError(message);
blockchainRequestsCallbacks.onComplete(false);
}
};
serverApiBlockcypher.setResponseListener(blockcypherListener);
serverApiBlockcypher.requestData(ctx.getBlockchain().getID(), ServerApiBlockcypher.BLOCKCYPHER_FEE, "", "");
}
@Override
@ -675,9 +738,4 @@ public class LtcEngine extends BtcEngine {
serverApiBlockcypher.requestData(ctx.getBlockchain().getID(), ServerApiBlockcypher.BLOCKCYPHER_SEND, "", txStr);
}
@Override
public boolean allowSelectFeeLevel() {
return false;
}
}