295 lines
No EOL
9.1 KiB
Java
295 lines
No EOL
9.1 KiB
Java
package com.tangem.domain.wallet;
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import android.net.Uri;
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import android.text.InputFilter;
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import com.tangem.tangemcard.reader.CardProtocol;
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import com.tangem.tangemcard.tasks.SignTask;
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import java.math.BigDecimal;
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import java.math.BigInteger;
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import java.math.RoundingMode;
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import java.security.NoSuchAlgorithmException;
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import java.security.NoSuchProviderException;
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import java.text.DecimalFormat;
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import java.text.DecimalFormatSymbols;
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import java.util.Locale;
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/**
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* Created by Ilia on 15.02.2018.
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*/
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public abstract class CoinEngine {
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public static class InternalAmount extends BigDecimal {
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private String currency;
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public InternalAmount() {
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super(0);
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currency="";
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}
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public InternalAmount(String amountString, String currency) {
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super(amountString.replace(',','.'));
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this.currency=currency;
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}
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public InternalAmount(long amount, String currency) {
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super(amount);
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this.currency=currency;
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}
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public InternalAmount(BigDecimal amount, String currency) {
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super(amount.unscaledValue(), amount.scale());
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this.currency=currency;
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}
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public InternalAmount(BigInteger amount, String currency) {
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super(new BigDecimal(amount).unscaledValue(), new BigDecimal(amount).scale());
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this.currency=currency;
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}
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public boolean notZero()
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{
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return compareTo(BigDecimal.ZERO)>0;
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}
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public boolean isZero() {
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return compareTo(BigDecimal.ZERO)==0;
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}
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public String getCurrency() {
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return currency;
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}
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public String toValueString(int decimals) {
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DecimalFormatSymbols symbols = new DecimalFormatSymbols(Locale.US);
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symbols.setDecimalSeparator('.');
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DecimalFormat df = new DecimalFormat();
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df.setDecimalFormatSymbols(symbols);
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df.setMaximumFractionDigits(decimals);
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df.setMinimumFractionDigits(0);
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df.setGroupingUsed(false);
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BigDecimal bd=new BigDecimal(unscaledValue(), scale());
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bd.setScale(decimals, ROUND_DOWN);
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return df.format(bd);
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}
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public String toValueString() {
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return toValueString(scale());
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}
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@Override
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public String toString() {
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return super.toString();
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}
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}
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public static class Amount extends BigDecimal {
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private String currency;
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public Amount() {
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super(0);
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currency="";
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}
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public Amount(String amountString, String currency) {
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super(amountString.replace(',','.'));
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this.currency = currency;
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}
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public Amount(Long amount, String currency) {
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super(amount);
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this.currency = currency;
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}
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public Amount(BigDecimal amount, String currency) {
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super(amount.unscaledValue(), amount.scale());
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this.currency = currency;
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}
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public String getCurrency() {
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return currency;
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}
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@Override
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public String toString() {
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return super.toString() + " " + currency;
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}
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public boolean notZero()
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{
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return compareTo(BigDecimal.ZERO)>0;
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}
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public String toDescriptionString(int decimals) {
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return toValueString(decimals)+ " " + currency;
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}
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public String toValueString(int decimals) {
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DecimalFormatSymbols symbols = new DecimalFormatSymbols(Locale.US);
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symbols.setDecimalSeparator('.');
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DecimalFormat df = new DecimalFormat();
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df.setDecimalFormatSymbols(symbols);
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df.setMaximumFractionDigits(decimals);
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df.setMinimumFractionDigits(0);
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df.setGroupingUsed(false);
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BigDecimal bd=new BigDecimal(unscaledValue(), scale());
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bd.setScale(decimals, ROUND_DOWN);
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return df.format(bd);
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}
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public String toValueString() {
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return toValueString(scale());
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}
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public String toEquivalentString(double rateValue) {
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if (rateValue > 0) {
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BigDecimal biRate = new BigDecimal(rateValue);
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BigDecimal exchangeCurs = biRate.multiply(this);
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exchangeCurs = exchangeCurs.setScale(2, RoundingMode.DOWN);
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return "≈ USD " + exchangeCurs.toString();
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} else {
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return "";
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}
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}
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public boolean isZero() {
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return compareTo(BigDecimal.ZERO)==0;
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}
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}
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protected TangemContext ctx;
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public CoinEngine() {
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}
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public CoinEngine(TangemContext ctx) {
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this.ctx = ctx;
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}
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public abstract boolean awaitingConfirmation();
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public abstract boolean hasBalanceInfo();
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public abstract boolean isBalanceNotZero();
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// public abstract byte[] sign(Amount feeValue, Amount amountValue, boolean IncFee, String targetAddress, CardProtocol protocol) throws Exception;
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// TODO - change isExtractPossible to isExtractPossible and if not - return string message
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public abstract boolean isExtractPossible();
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public abstract Uri getShareWalletUriExplorer();
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public abstract Uri getShareWalletUri();
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public abstract boolean checkNewTransactionAmount(Amount amount);
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// TODO - move minFeeInInternalUnits to CoinData
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public abstract boolean checkNewTransactionAmountAndFee(Amount amount, Amount fee, Boolean isFeeIncluded);
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public abstract boolean validateBalance(BalanceValidator balanceValidator);
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public abstract Amount getBalance();
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public abstract String getBalanceHTML();
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public abstract String getBalanceCurrency();
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public abstract InputFilter[] getAmountInputFilters();
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public abstract String getOfflineBalanceHTML();
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public abstract String evaluateFeeEquivalent(String fee);
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public abstract String getFeeCurrency();
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public abstract boolean isNeedCheckNode();
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public abstract String getBalanceEquivalent();
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public abstract boolean validateAddress(String address);
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public abstract String calculateAddress(byte[] pkUncompressed) throws NoSuchProviderException, NoSuchAlgorithmException;
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public abstract Amount convertToAmount(InternalAmount internalAmount) throws Exception;
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public abstract Amount convertToAmount(String strAmount, String currency);
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public abstract InternalAmount convertToInternalAmount(Amount amount) throws Exception;
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public abstract InternalAmount convertToInternalAmount(byte[] bytes) throws Exception;
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public abstract byte[] convertToByteArray(InternalAmount internalAmount) throws Exception;
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public abstract CoinData createCoinData();
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public abstract String getUnspentInputsDescription();
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public void defineWallet() throws CardProtocol.TangemException {
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try {
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String wallet = calculateAddress(ctx.getCard().getWalletPublicKey());
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ctx.getCoinData().setWallet(wallet);
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}
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catch (Exception e)
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{
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ctx.getCoinData().setWallet("ERROR");
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throw new CardProtocol.TangemException("Can't define wallet address");
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}
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}
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public abstract SignTask.PaymentToSign constructPayment(Amount amountValue, Amount feeValue, boolean IncFee, String targetAddress) throws Exception;
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public interface OnNeedSendPayment
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{
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void onPaymentPrepared(byte[] txForSend);
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}
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protected OnNeedSendPayment onNeedSendPayment;
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public void setOnNeedSendPayment(OnNeedSendPayment onNeedSendPayment) {
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this.onNeedSendPayment = onNeedSendPayment;
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}
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protected void notifyOnNeedSendPayment(byte[] txForSend) throws Exception {
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if(onNeedSendPayment==null)
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throw new Exception("Payment signed but no callback defined to send!");
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onNeedSendPayment.onPaymentPrepared(txForSend);
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}
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public interface BlockchainRequestsCallbacks
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{
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/**
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* Notification that the all requests in sequence completed
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* Call after a last request completed
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* If occurred error return in ctx.error
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* @param success -*
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*/
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void onComplete(Boolean success);
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/**
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* Notification that a new part of data received and it's possible to update view
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* May call when some request in the sequence completed but there are still a few requests left
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*/
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void onProgress();
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/**
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* Return flag that allow to add new or re-requests in the sequence
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* Call between requests or when request fail and before re-request
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* @return true if not need terminate (e.g. activity is online)
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*/
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boolean allowAdvance();
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}
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public abstract void requestBalanceAndUnspentTransactions(BlockchainRequestsCallbacks blockchainRequestsCallbacks) throws Exception;
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public abstract void requestFee(BlockchainRequestsCallbacks blockchainRequestsCallbacks, String targetAddress, Amount amount) throws Exception;
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public abstract void requestSendTransaction(BlockchainRequestsCallbacks blockchainRequestsCallbacks, byte[] txForSend) throws Exception;
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} |