use yadio for pricing "exotic" fiat (#921)

* yadio api

* add more currencies

* fix es typo

* bump version & fix cicleci build

.circleci/config.yml

@@ -3,7 +3,7 @@ jobs:
   build:
     working_directory: ~/code
     docker:
-      - image: cimg/android:2022.03-ndk
+      - image: cimg/android:2023.12-ndk
     environment:
       JVM_OPTS: -Xmx3200m
     steps:

app/build.gradle

@@ -1,15 +1,15 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 33
-    buildToolsVersion '33.0.2'
     ndkVersion '17.2.4988734'
     defaultConfig {
         applicationId "com.m2049r.xmrwallet"
+        buildToolsVersion = '34.0.0'
+        compileSdk 33
         minSdkVersion 21
-        targetSdkVersion 31
-        versionCode 3200
-        versionName "3.2.0 'Decoy Selection'"
+        targetSdkVersion 33
+        versionCode 3310
+        versionName "3.3.10 'Argentina'"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         externalNativeBuild {
             cmake {
@@ -126,11 +126,11 @@ dependencies {
     implementation 'androidx.core:core:1.10.1'
     implementation 'androidx.appcompat:appcompat:1.6.1'
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
-    implementation 'androidx.recyclerview:recyclerview:1.3.0'
+    implementation 'androidx.recyclerview:recyclerview:1.3.1'
     implementation 'androidx.cardview:cardview:1.0.0'
     implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
-    implementation 'androidx.preference:preference:1.2.0'
+    implementation 'androidx.preference:preference:1.2.1'
 
     implementation 'com.google.android.material:material:1.9.0'
 

app/src/main/AndroidManifest.xml

@@ -1,6 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
+    <uses-feature
+        android:name="android.hardware.camera"
+        android:required="false" />
+
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.USE_FINGERPRINT" />

app/src/main/java/com/m2049r/xmrwallet/LoginActivity.java

@@ -658,11 +658,11 @@ public class LoginActivity extends BaseActivity
                 break;
             case NetworkType_Testnet:
                 toolbar.setSubtitle(getString(R.string.connect_testnet));
-                toolbar.setBackgroundResource(ThemeHelper.getThemedResourceId(this, R.attr.colorPrimaryDark));
+                toolbar.setBackgroundResource(ThemeHelper.getThemedResourceId(this, androidx.appcompat.R.attr.colorPrimaryDark));
                 break;
             case NetworkType_Stagenet:
                 toolbar.setSubtitle(getString(R.string.connect_stagenet));
-                toolbar.setBackgroundResource(ThemeHelper.getThemedResourceId(this, R.attr.colorPrimaryDark));
+                toolbar.setBackgroundResource(ThemeHelper.getThemedResourceId(this, androidx.appcompat.R.attr.colorPrimaryDark));
                 break;
             default:
                 throw new IllegalStateException("NetworkType unknown: " + net);

app/src/main/java/com/m2049r/xmrwallet/TxFragment.java

@@ -79,6 +79,7 @@ public class TxFragment extends Fragment {
     private TextView tvTxPaymentId;
     private TextView tvTxBlockheight;
     private TextView tvTxAmount;
+    private TextView tvTxPocketChangeAmount;
     private TextView tvTxFee;
     private TextView tvTxTransfers;
     private TextView etTxNotes;
@@ -116,6 +117,7 @@ public class TxFragment extends Fragment {
         tvTxPaymentId = view.findViewById(R.id.tvTxPaymentId);
         tvTxBlockheight = view.findViewById(R.id.tvTxBlockheight);
         tvTxAmount = view.findViewById(R.id.tvTxAmount);
+        tvTxPocketChangeAmount = view.findViewById(R.id.tvTxPocketChangeAmount);
         tvTxFee = view.findViewById(R.id.tvTxFee);
         tvTxTransfers = view.findViewById(R.id.tvTxTransfers);
         etTxNotes = view.findViewById(R.id.etTxNotes);
@@ -249,8 +251,10 @@ public class TxFragment extends Fragment {
         }
         String sign = (info.direction == TransactionInfo.Direction.Direction_In ? "+" : "-");
 
-        long realAmount = info.amount;
-        tvTxAmount.setText(sign + Wallet.getDisplayAmount(realAmount));
+        tvTxAmount.setText(sign + Wallet.getDisplayAmount(info.amount));
+        final long pcAmount = info.getPocketChangeAmount();
+        tvTxPocketChangeAmount.setVisibility(pcAmount > 0 ? View.VISIBLE : View.GONE);
+        tvTxPocketChangeAmount.setText(getString(R.string.pocketchange_tx_detail, Wallet.getDisplayAmount(pcAmount)));
 
         if ((info.fee > 0)) {
             String fee = Wallet.getDisplayAmount(info.fee);

app/src/main/java/com/m2049r/xmrwallet/WalletActivity.java

@@ -52,8 +52,8 @@ import com.m2049r.xmrwallet.data.BarcodeData;
 import com.m2049r.xmrwallet.data.Subaddress;
 import com.m2049r.xmrwallet.data.TxData;
 import com.m2049r.xmrwallet.data.UserNotes;
-import com.m2049r.xmrwallet.dialog.CreditsFragment;
 import com.m2049r.xmrwallet.dialog.HelpFragment;
+import com.m2049r.xmrwallet.dialog.PocketChangeFragment;
 import com.m2049r.xmrwallet.fragment.send.SendAddressWizardFragment;
 import com.m2049r.xmrwallet.fragment.send.SendFragment;
 import com.m2049r.xmrwallet.ledger.LedgerProgressDialog;
@@ -82,7 +82,8 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
         WalletFragment.DrawerLocker,
         NavigationView.OnNavigationItemSelectedListener,
         SubaddressFragment.Listener,
-        SubaddressInfoFragment.Listener {
+        SubaddressInfoFragment.Listener,
+        PocketChangeFragment.Listener {
 
     public static final String REQUEST_ID = "id";
     public static final String REQUEST_PW = "pw";
@@ -285,8 +286,6 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
             onWalletRescan();
         } else if (itemId == R.id.action_info) {
             onWalletDetails();
-        } else if (itemId == R.id.action_credits) {
-            CreditsFragment.display(getSupportFragmentManager());
         } else if (itemId == R.id.action_share) {
             onShareTxInfo();
         } else if (itemId == R.id.action_help_tx_info) {
@@ -301,6 +300,8 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
             HelpFragment.display(getSupportFragmentManager(), R.string.help_send);
         } else if (itemId == R.id.action_rename) {
             onAccountRename();
+        } else if (itemId == R.id.action_pocketchange) {
+            PocketChangeFragment.display(getSupportFragmentManager(), getWallet().getPocketChangeSetting());
         } else if (itemId == R.id.action_subaddresses) {
             showSubaddresses(true);
         } else if (itemId == R.id.action_streetmode) {
@@ -422,7 +423,7 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
                 break;
             case NetworkType_Stagenet:
             case NetworkType_Testnet:
-                toolbar.setBackgroundResource(ThemeHelper.getThemedResourceId(this, R.attr.colorPrimaryDark));
+                toolbar.setBackgroundResource(ThemeHelper.getThemedResourceId(this, androidx.appcompat.R.attr.colorPrimaryDark));
                 break;
             default:
                 throw new IllegalStateException("Unsupported Network: " + WalletManager.getInstance().getNetworkType());
@@ -646,6 +647,8 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
             haveWallet = true;
             invalidateOptionsMenu();
 
+            loadPocketChangeSettings();
+
             if (requestStreetMode) onEnableStreetMode();
 
             final WalletFragment walletFragment = getWalletFragment();
@@ -1104,6 +1107,7 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
 
     public void setAccountIndex(int accountIndex) {
         getWallet().setAccountIndex(accountIndex);
+        loadPocketChangeSettings();
         selectedSubaddressIndex = 0;
     }
 
@@ -1214,4 +1218,19 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
         b.putInt("subaddressIndex", subaddressIndex);
         replaceFragmentWithTransition(view, new SubaddressInfoFragment(), null, b);
     }
+
+    @Override
+    public void setPocketChange(Wallet.PocketChangeSetting setting) {
+        SharedPreferences.Editor editor = getPrefs().edit();
+        editor.putString(getWallet().getAddress() + "_PC", setting.toPrefString());
+        editor.apply();
+        getWallet().setPocketChangeSetting(setting);
+    }
+
+
+    public void loadPocketChangeSettings() {
+        final String settings = getPrefs().getString(getWallet().getAddress() + "_PC", "0");
+        getWallet().setPocketChangeSetting(Wallet.PocketChangeSetting.from(settings));
+    }
+
 }

app/src/main/java/com/m2049r/xmrwallet/WalletFragment.java

@@ -112,7 +112,7 @@ public class WalletFragment extends Fragment
         flExchange = view.findViewById(R.id.flExchange);
         ((ProgressBar) view.findViewById(R.id.pbExchange)).getIndeterminateDrawable().
                 setColorFilter(
-                        ThemeHelper.getThemedColor(getContext(), R.attr.colorPrimaryVariant),
+                        ThemeHelper.getThemedColor(getContext(), com.google.android.material.R.attr.colorPrimaryVariant),
                         android.graphics.PorterDuff.Mode.MULTIPLY);
 
         tvProgress = view.findViewById(R.id.tvProgress);

app/src/main/java/com/m2049r/xmrwallet/XmrWalletApplication.java

@@ -22,18 +22,24 @@ import android.content.res.Configuration;
 import android.os.Build;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.OptIn;
 import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentStateManagerControl;
 
 import com.m2049r.xmrwallet.model.NetworkType;
 import com.m2049r.xmrwallet.util.LocaleHelper;
 import com.m2049r.xmrwallet.util.NetCipherHelper;
 import com.m2049r.xmrwallet.util.NightmodeHelper;
+import com.m2049r.xmrwallet.util.ServiceHelper;
+
+import java.util.Arrays;
 
 import timber.log.Timber;
 
 public class XmrWalletApplication extends Application {
 
     @Override
+    @OptIn(markerClass = FragmentStateManagerControl.class)
     public void onCreate() {
         super.onCreate();
         FragmentManager.enableNewStateManager(false);

app/src/main/java/com/m2049r/xmrwallet/data/NodeInfo.java

@@ -270,7 +270,7 @@ public class NodeInfo extends Node {
                 (hostAddress.isOnion() ? " .onion  " : ""), " " + info));
         view.setText(text);
         if (isError)
-            view.setTextColor(ThemeHelper.getThemedColor(ctx, R.attr.colorError));
+            view.setTextColor(ThemeHelper.getThemedColor(ctx, androidx.appcompat.R.attr.colorError));
         else
             view.setTextColor(ThemeHelper.getThemedColor(ctx, android.R.attr.textColorSecondary));
     }

app/src/main/java/com/m2049r/xmrwallet/data/TxDataBtc.java

@@ -41,10 +41,6 @@ public class TxDataBtc extends TxData {
         super();
     }
 
-    public TxDataBtc(TxDataBtc txDataBtc) {
-        super(txDataBtc);
-    }
-
     @Override
     public void writeToParcel(Parcel out, int flags) {
         super.writeToParcel(out, flags);

app/src/main/java/com/m2049r/xmrwallet/dialog/PocketChangeFragment.java

@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2023 m2049r
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.m2049r.xmrwallet.dialog;
+
+import android.app.Dialog;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.DialogFragment;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentActivity;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentTransaction;
+
+import com.google.android.material.dialog.MaterialAlertDialogBuilder;
+import com.google.android.material.slider.Slider;
+import com.google.android.material.switchmaterial.SwitchMaterial;
+import com.m2049r.xmrwallet.R;
+import com.m2049r.xmrwallet.model.Wallet;
+import com.m2049r.xmrwallet.util.Helper;
+
+public class PocketChangeFragment extends DialogFragment implements Slider.OnChangeListener {
+    static final String TAG = "PocketChangeFragment";
+    static final String ENABLED = "enabled";
+    static final String TICK = "tick";
+
+    public static PocketChangeFragment newInstance(boolean enabled, int tick) {
+        PocketChangeFragment fragment = new PocketChangeFragment();
+        Bundle bundle = new Bundle();
+        bundle.putInt(ENABLED, enabled ? 1 : 0);
+        bundle.putInt(TICK, tick);
+        fragment.setArguments(bundle);
+        return fragment;
+    }
+
+    public static void display(FragmentManager fm, @NonNull Wallet.PocketChangeSetting setting) {
+        FragmentTransaction ft = fm.beginTransaction();
+        Fragment prev = fm.findFragmentByTag(TAG);
+        if (prev != null) {
+            ft.remove(prev);
+        }
+        PocketChangeFragment.newInstance(setting.isEnabled(), getTick(setting.getAmount())).show(ft, TAG);
+    }
+
+    SwitchMaterial switchPocketChange;
+    Slider slider;
+    TextView tvProgressLabel;
+
+    @NonNull
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final View view = LayoutInflater.from(getActivity()).inflate(R.layout.fragment_pocketchange_setting, null);
+        boolean enabled = false;
+        int progress = 0;
+        Bundle arguments = getArguments();
+        if (arguments != null) {
+            enabled = arguments.getInt(ENABLED) > 0;
+            progress = arguments.getInt(TICK);
+        }
+
+        final View llAmount = view.findViewById(R.id.llAmount);
+        switchPocketChange = view.findViewById(R.id.switchPocketChange);
+        switchPocketChange.setOnCheckedChangeListener((buttonView, isChecked) -> llAmount.setVisibility(isChecked ? View.VISIBLE : View.INVISIBLE));
+        slider = view.findViewById(R.id.seekbar);
+        slider.addOnChangeListener(this);
+        switchPocketChange.setChecked(enabled);
+        tvProgressLabel = view.findViewById(R.id.seekbar_value);
+        slider.setValue(progress);
+        llAmount.setVisibility(enabled ? View.VISIBLE : View.INVISIBLE);
+        onValueChange(slider, slider.getValue(), false);
+
+        MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity())
+                .setView(view)
+                .setPositiveButton(R.string.label_apply,
+                        (dialog, whichButton) -> {
+                            final FragmentActivity activity = getActivity();
+                            if (activity instanceof Listener) {
+                                ((Listener) activity).setPocketChange(Wallet.PocketChangeSetting.of(switchPocketChange.isChecked(), getAmount()));
+                            }
+                        }
+                );
+        return builder.create();
+    }
+
+    private long getAmount() {
+        return Wallet.getAmountFromDouble(getAmount((int) slider.getValue()));
+    }
+
+    private static final double[] AMOUNTS = {0.1, 0.2, 0.3, 0.5, 0.8, 1.3};
+
+    private static double getAmount(int i) {
+        return AMOUNTS[i];
+    }
+
+    // find the closest amount we have
+    private static int getTick(long amount) {
+        int enabled = amount > 0 ? 1 : -1;
+        amount = Math.abs(amount);
+        double lastDiff = Double.MAX_VALUE;
+        for (int i = 0; i < AMOUNTS.length; i++) {
+            final double diff = Math.abs(Helper.ONE_XMR * AMOUNTS[i] - amount);
+            if (lastDiff < diff) return i - 1;
+            lastDiff = diff;
+        }
+        return enabled * (AMOUNTS.length - 1);
+    }
+
+    @Override
+    public void onValueChange(@NonNull Slider slider, float value, boolean fromUser) {
+        tvProgressLabel.setText(getString(R.string.pocketchange_amount, getAmount((int) value)));
+    }
+
+    public interface Listener {
+        void setPocketChange(Wallet.PocketChangeSetting setting);
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendAddressWizardFragment.java

@@ -411,10 +411,10 @@ public class SendAddressWizardFragment extends SendWizardFragment {
             if (txData instanceof TxDataBtc) {
                 ((TxDataBtc) txData).setBtcAddress(etAddress.getEditText().getText().toString());
                 ((TxDataBtc) txData).setBtcSymbol(selectedCrypto.getSymbol());
-                txData.setDestinationAddress(null);
+                txData.setDestination(null);
                 ServiceHelper.ASSET = selectedCrypto.getSymbol().toLowerCase();
             } else {
-                txData.setDestinationAddress(etAddress.getEditText().getText().toString());
+                txData.setDestination(etAddress.getEditText().getText().toString());
                 ServiceHelper.ASSET = null;
             }
             txData.setUserNotes(new UserNotes(etNotes.getEditText().getText().toString()));

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendAmountWizardFragment.java

@@ -23,6 +23,8 @@ import android.view.ViewGroup;
 import android.widget.ImageButton;
 import android.widget.TextView;
 
+import com.google.android.material.progressindicator.LinearProgressIndicator;
+import com.google.android.material.switchmaterial.SwitchMaterial;
 import com.m2049r.xmrwallet.R;
 import com.m2049r.xmrwallet.data.BarcodeData;
 import com.m2049r.xmrwallet.data.TxData;

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendBtcConfirmWizardFragment.java

@@ -74,6 +74,9 @@ public class SendBtcConfirmWizardFragment extends SendWizardFragment implements
     private View llConfirmSend;
     private Button bSend;
     private View pbProgressSend;
+    private TextView tvTxChange;
+    private View llPocketChange;
+
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
@@ -92,6 +95,8 @@ public class SendBtcConfirmWizardFragment extends SendWizardFragment implements
 
         tvTxFee = view.findViewById(R.id.tvTxFee);
         tvTxTotal = view.findViewById(R.id.tvTxTotal);
+        tvTxChange = view.findViewById(R.id.tvTxChange);
+        llPocketChange = view.findViewById(R.id.llPocketChange);
 
         llStageA = view.findViewById(R.id.llStageA);
         evStageA = view.findViewById(R.id.evStageA);
@@ -217,6 +222,13 @@ public class SendBtcConfirmWizardFragment extends SendWizardFragment implements
                 tvTxFee.setText(Wallet.getDisplayAmount(pendingTransaction.getFee()));
                 tvTxTotal.setText(Wallet.getDisplayAmount(
                         pendingTransaction.getFee() + pendingTransaction.getAmount()));
+                final long change = pendingTransaction.getPocketChange();
+                if (change > 0) {
+                    llPocketChange.setVisibility(View.VISIBLE);
+                    tvTxChange.setText(Wallet.getDisplayAmount(change));
+                } else {
+                    llPocketChange.setVisibility(View.GONE);
+                }
                 updateSendButton();
             });
         } else {
@@ -348,7 +360,7 @@ public class SendBtcConfirmWizardFragment extends SendWizardFragment implements
         }
         showProgress(3, getString(R.string.label_send_progress_create_tx));
         final TxData txData = sendListener.getTxData();
-        txData.setDestinationAddress(xmrtoOrder.getXmrAddress());
+        txData.setDestination(xmrtoOrder.getXmrAddress());
         txData.setAmount(xmrtoOrder.getXmrAmount());
         getActivityCallback().onPrepareSend(xmrtoOrder.getOrderId(), txData);
     }

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendBtcSuccessWizardFragment.java

@@ -140,7 +140,7 @@ public class SendBtcSuccessWizardFragment extends SendWizardFragment {
         isResumed = true;
 
         btcData = (TxDataBtc) sendListener.getTxData();
-        tvTxAddress.setText(btcData.getDestinationAddress());
+        tvTxAddress.setText(btcData.getDestination());
 
         final PendingTx committedTx = sendListener.getCommittedTx();
         if (committedTx != null) {

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendConfirmWizardFragment.java

@@ -64,12 +64,14 @@ public class SendConfirmWizardFragment extends SendWizardFragment implements Sen
     private TextView tvTxAddress;
     private TextView tvTxNotes;
     private TextView tvTxAmount;
+    private TextView tvTxChange;
     private TextView tvTxFee;
     private TextView tvTxTotal;
     private View llProgress;
     private View bSend;
     private View llConfirmSend;
     private View pbProgressSend;
+    private View llPocketChange;
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
@@ -83,12 +85,14 @@ public class SendConfirmWizardFragment extends SendWizardFragment implements Sen
         tvTxAddress = view.findViewById(R.id.tvTxAddress);
         tvTxNotes = view.findViewById(R.id.tvTxNotes);
         tvTxAmount = view.findViewById(R.id.tvTxAmount);
+        tvTxChange = view.findViewById(R.id.tvTxChange);
         tvTxFee = view.findViewById(R.id.tvTxFee);
         tvTxTotal = view.findViewById(R.id.tvTxTotal);
 
         llProgress = view.findViewById(R.id.llProgress);
         pbProgressSend = view.findViewById(R.id.pbProgressSend);
         llConfirmSend = view.findViewById(R.id.llConfirmSend);
+        llPocketChange = view.findViewById(R.id.llPocketChange);
 
         bSend = view.findViewById(R.id.bSend);
         bSend.setEnabled(false);
@@ -181,7 +185,7 @@ public class SendConfirmWizardFragment extends SendWizardFragment implements Sen
         isResumed = true;
 
         final TxData txData = sendListener.getTxData();
-        tvTxAddress.setText(txData.getDestinationAddress());
+        tvTxAddress.setText(txData.getDestination());
         UserNotes notes = sendListener.getTxData().getUserNotes();
         if ((notes != null) && (!notes.note.isEmpty())) {
             tvTxNotes.setText(notes.note);
@@ -206,7 +210,14 @@ public class SendConfirmWizardFragment extends SendWizardFragment implements Sen
                 tvTxAmount.setText(getString(R.string.street_sweep_amount));
                 tvTxTotal.setText(getString(R.string.street_sweep_amount));
             } else {
-                tvTxAmount.setText(Wallet.getDisplayAmount(pendingTransaction.getAmount()));
+                tvTxAmount.setText(Wallet.getDisplayAmount(pendingTransaction.getNetAmount()));
+                final long change = pendingTransaction.getPocketChange();
+                if (change > 0) {
+                    llPocketChange.setVisibility(View.VISIBLE);
+                    tvTxChange.setText(Wallet.getDisplayAmount(change));
+                } else {
+                    llPocketChange.setVisibility(View.GONE);
+                }
                 tvTxTotal.setText(Wallet.getDisplayAmount(
                         pendingTransaction.getFee() + pendingTransaction.getAmount()));
             }

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendSuccessWizardFragment.java

@@ -108,7 +108,7 @@ public class SendSuccessWizardFragment extends SendWizardFragment {
         Helper.hideKeyboard(getActivity());
 
         final TxData txData = sendListener.getTxData();
-        tvTxAddress.setText(txData.getDestinationAddress());
+        tvTxAddress.setText(txData.getDestination());
 
         final PendingTx committedTx = sendListener.getCommittedTx();
         if (committedTx != null) {

app/src/main/java/com/m2049r/xmrwallet/layout/TransactionInfoAdapter.java

@@ -189,7 +189,6 @@ public class TransactionInfoAdapter extends RecyclerView.Adapter<TransactionInfo
         }
 
         private void showLock() {
-            Timber.d("UNLOCK %d:%d", infoItem.unlockTime, infoItem.blockheight);
             if (infoItem.unlockTime == 0) {
                 ivLock.setVisibility(View.GONE);
                 return;
@@ -220,7 +219,7 @@ public class TransactionInfoAdapter extends RecyclerView.Adapter<TransactionInfo
                 ivTxType.setVisibility(View.GONE);
             }
 
-            String displayAmount = Helper.getDisplayAmount(infoItem.amount, Helper.DISPLAY_DIGITS_INFO);
+            String displayAmount = Helper.getDisplayAmount(infoItem.getNetAmount(), Helper.DISPLAY_DIGITS_INFO);
             if (infoItem.direction == TransactionInfo.Direction.Direction_Out) {
                 tvAmount.setText(context.getString(R.string.tx_list_amount_negative, displayAmount));
             } else {

app/src/main/java/com/m2049r/xmrwallet/model/Coins.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2023 m2049r
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.m2049r.xmrwallet.model;
+
+import java.util.List;
+
+import timber.log.Timber;
+
+public class Coins {
+    static {
+        System.loadLibrary("monerujo");
+    }
+
+    private long handle;
+
+    public Coins(long handle) {
+        this.handle = handle;
+    }
+
+    public List<CoinsInfo> getAll(int accountIndex, boolean unspentOnly) {
+        return refresh(accountIndex, unspentOnly);
+    }
+
+    private native List<CoinsInfo> refresh(int accountIndex, boolean unspentOnly);
+}

app/src/main/java/com/m2049r/xmrwallet/model/CoinsInfo.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2023 m2049r
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.m2049r.xmrwallet.model;
+
+import lombok.Value;
+
+// this is not the CoinsInfo from the API as that is owned by the Coins object
+// this is a POJO
+@Value
+public class CoinsInfo {
+    int accountIndex;
+    int addressIndex;
+    long amount;
+    long blockheight;
+    String txHash;
+    boolean spent;
+    boolean frozen;
+    long unlockTime;
+    boolean unlocked;
+
+    public boolean isSpendable() {
+        return !spent && unlocked;
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/model/PendingTransaction.java

@@ -16,6 +16,9 @@
 
 package com.m2049r.xmrwallet.model;
 
+import lombok.Getter;
+import lombok.Setter;
+
 public class PendingTransaction {
     static {
         System.loadLibrary("monerujo");
@@ -63,8 +66,6 @@ public class PendingTransaction {
         Priority(int value) {
             this.value = value;
         }
-
-
     }
 
     public Status getStatus() {
@@ -95,4 +96,11 @@ public class PendingTransaction {
 
     public native long getTxCount();
 
+    @Getter
+    @Setter
+    private long pocketChange;
+
+    public long getNetAmount() {
+        return getAmount() - pocketChange;
+    }
 }

app/src/main/java/com/m2049r/xmrwallet/model/TransactionHistory.java

@@ -17,8 +17,10 @@
 package com.m2049r.xmrwallet.model;
 
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
+import java.util.Map;
 
 import timber.log.Timber;
 
@@ -61,22 +63,14 @@ public class TransactionHistory {
 
     private List<TransactionInfo> transactions = new ArrayList<>();
 
-    void refreshWithNotes(Wallet wallet) {
+    public void refreshWithNotes(Wallet wallet) {
         refresh();
         loadNotes(wallet);
     }
 
     private void refresh() {
-        List<TransactionInfo> transactionInfos = refreshJ();
-        Timber.d("refresh size=%d", transactionInfos.size());
-        for (Iterator<TransactionInfo> iterator = transactionInfos.iterator(); iterator.hasNext(); ) {
-            TransactionInfo info = iterator.next();
-            if (info.accountIndex != accountIndex) {
-                iterator.remove();
-            }
-        }
-        transactions = transactionInfos;
+        transactions = refreshJ(accountIndex);
     }
 
-    private native List<TransactionInfo> refreshJ();
+    private native List<TransactionInfo> refreshJ(int accountIndex);
 }

app/src/main/java/com/m2049r/xmrwallet/model/TransactionInfo.java

@@ -101,6 +101,23 @@ public class TransactionInfo implements Parcelable, Comparable<TransactionInfo>
         this.unlockTime = unlockTime;
         this.subaddressLabel = subaddressLabel;
         this.transfers = transfers;
+        calcNetAmount();
+    }
+
+    @Getter
+    private long netAmount;
+
+    public long getPocketChangeAmount() {
+        return amount - netAmount;
+    }
+
+    private void calcNetAmount() {
+        netAmount = amount;
+        if ((direction == TransactionInfo.Direction.Direction_Out) && (transfers != null)) {
+            for (int i = 1; i < transfers.size(); i++) {
+                netAmount -= transfers.get(i).amount;
+            }
+        }
     }
 
     public boolean isConfirmed() {
@@ -138,6 +155,7 @@ public class TransactionInfo implements Parcelable, Comparable<TransactionInfo>
         out.writeString(txKey);
         out.writeString(notes);
         out.writeString(address);
+        out.writeLong(netAmount);
     }
 
     public static final Parcelable.Creator<TransactionInfo> CREATOR = new Parcelable.Creator<TransactionInfo>() {
@@ -169,6 +187,7 @@ public class TransactionInfo implements Parcelable, Comparable<TransactionInfo>
         txKey = in.readString();
         notes = in.readString();
         address = in.readString();
+        netAmount = in.readLong();
     }
 
     @Override

app/src/main/java/com/m2049r/xmrwallet/model/Wallet.java

@@ -25,10 +25,13 @@ import com.m2049r.xmrwallet.data.TxData;
 import java.io.File;
 import java.text.SimpleDateFormat;
 import java.util.Date;
+import java.util.List;
 import java.util.Locale;
 
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
+import lombok.Setter;
+import lombok.Value;
 import timber.log.Timber;
 
 public class Wallet {
@@ -67,9 +70,7 @@ public class Wallet {
         }
 
         public boolean isOk() {
-            return (getStatus() == StatusEnum.Status_Ok)
-                    && ((getConnectionStatus() == null) ||
-                    (getConnectionStatus() == ConnectionStatus.ConnectionStatus_Connected));
+            return (getStatus() == StatusEnum.Status_Ok) && ((getConnectionStatus() == null) || (getConnectionStatus() == ConnectionStatus.ConnectionStatus_Connected));
         }
 
         @Override
@@ -110,23 +111,17 @@ public class Wallet {
     @RequiredArgsConstructor
     @Getter
     public enum Device {
-        Device_Undefined(0, 0),
-        Device_Software(50, 200),
-        Device_Ledger(5, 20);
+        Device_Undefined(0, 0), Device_Software(50, 200), Device_Ledger(5, 20);
         private final int accountLookahead;
         private final int subaddressLookahead;
     }
 
     public enum StatusEnum {
-        Status_Ok,
-        Status_Error,
-        Status_Critical
+        Status_Ok, Status_Error, Status_Critical
     }
 
     public enum ConnectionStatus {
-        ConnectionStatus_Disconnected,
-        ConnectionStatus_Connected,
-        ConnectionStatus_WrongVersion
+        ConnectionStatus_Disconnected, ConnectionStatus_Connected, ConnectionStatus_WrongVersion
     }
 
     public native String getSeed(String offset);
@@ -168,16 +163,14 @@ public class Wallet {
     private native String getAddressJ(int accountIndex, int addressIndex);
 
     public Subaddress getSubaddressObject(int accountIndex, int subAddressIndex) {
-        return new Subaddress(accountIndex, subAddressIndex,
-                getSubaddress(subAddressIndex), getSubaddressLabel(subAddressIndex));
+        return new Subaddress(accountIndex, subAddressIndex, getSubaddress(subAddressIndex), getSubaddressLabel(subAddressIndex));
     }
 
     public Subaddress getSubaddressObject(int subAddressIndex) {
         Subaddress subaddress = getSubaddressObject(accountIndex, subAddressIndex);
         long amount = 0;
         for (TransactionInfo info : getHistory().getAll()) {
-            if ((info.addressIndex == subAddressIndex)
-                    && (info.direction == TransactionInfo.Direction.Direction_In)) {
+            if ((info.addressIndex == subAddressIndex) && (info.direction == TransactionInfo.Direction.Direction_In)) {
                 amount += info.amount;
             }
         }
@@ -217,13 +210,10 @@ public class Wallet {
 
     //    virtual std::string keysFilename() const = 0;
     public boolean init(long upper_transaction_size_limit) {
-        return initJ(WalletManager.getInstance().getDaemonAddress(), upper_transaction_size_limit,
-                WalletManager.getInstance().getDaemonUsername(),
-                WalletManager.getInstance().getDaemonPassword());
+        return initJ(WalletManager.getInstance().getDaemonAddress(), upper_transaction_size_limit, WalletManager.getInstance().getDaemonUsername(), WalletManager.getInstance().getDaemonPassword());
     }
 
-    private native boolean initJ(String daemon_address, long upper_transaction_size_limit,
-                                 String daemon_username, String daemon_password);
+    private native boolean initJ(String daemon_address, long upper_transaction_size_limit, String daemon_username, String daemon_password);
 
 //    virtual bool createWatchOnly(const std::string &path, const std::string &password, const std::string &language) const = 0;
 //    virtual void setRefreshFromBlockHeight(uint64_t refresh_from_block_height) = 0;
@@ -335,36 +325,23 @@ public class Wallet {
         }
     }
 
-    public PendingTransaction createTransaction(TxData txData) {
-        return createTransaction(
-                txData.getDestinationAddress(),
-                txData.getAmount(),
-                txData.getMixin(),
-                txData.getPriority());
-    }
+    private native long createTransactionMultDest(String[] destinations, String payment_id, long[] amounts, int mixin_count, int priority, int accountIndex, int[] subaddresses);
 
-    public PendingTransaction createTransaction(String dst_addr,
-                                                long amount, int mixin_count,
-                                                PendingTransaction.Priority priority) {
+    public PendingTransaction createTransaction(TxData txData) {
         disposePendingTransaction();
-        int _priority = priority.getValue();
-        long txHandle =
-                (amount == SWEEP_ALL ?
-                        createSweepTransaction(dst_addr, "", mixin_count, _priority,
-                                accountIndex) :
-                        createTransactionJ(dst_addr, "", amount, mixin_count, _priority,
-                                accountIndex));
+        int _priority = txData.getPriority().getValue();
+        final boolean sweepAll = txData.getAmount() == SWEEP_ALL;
+        Timber.d("TxData: %s", txData);
+        long txHandle = (sweepAll ? createSweepTransaction(txData.getDestination(), "", txData.getMixin(), _priority, accountIndex) :
+                createTransactionMultDest(txData.getDestinations(), "", txData.getAmounts(), txData.getMixin(), _priority, accountIndex, txData.getSubaddresses()));
         pendingTransaction = new PendingTransaction(txHandle);
+        pendingTransaction.setPocketChange(txData.getPocketChangeAmount());
         return pendingTransaction;
     }
 
-    private native long createTransactionJ(String dst_addr, String payment_id,
-                                           long amount, int mixin_count,
-                                           int priority, int accountIndex);
+    private native long createTransactionJ(String dst_addr, String payment_id, long amount, int mixin_count, int priority, int accountIndex);
 
-    private native long createSweepTransaction(String dst_addr, String payment_id,
-                                               int mixin_count,
-                                               int priority, int accountIndex);
+    private native long createSweepTransaction(String dst_addr, String payment_id, int mixin_count, int priority, int accountIndex);
 
 
     public PendingTransaction createSweepUnmixableTransaction() {
@@ -381,7 +358,13 @@ public class Wallet {
 
     public native void disposeTransaction(PendingTransaction pendingTransaction);
 
-//virtual bool exportKeyImages(const std::string &filename) = 0;
+    public long estimateTransactionFee(TxData txData) {
+        return estimateTransactionFee(txData.getDestinations(), txData.getAmounts(), txData.getPriority().getValue());
+    }
+
+    private native long estimateTransactionFee(String[] destinations, long[] amounts, int priority);
+
+    //virtual bool exportKeyImages(const std::string &filename) = 0;
 //virtual bool importKeyImages(const std::string &filename) = 0;
 
 
@@ -403,6 +386,22 @@ public class Wallet {
     }
 
 //virtual AddressBook * addressBook() const = 0;
+
+    public List<CoinsInfo> getCoinsInfos(boolean unspentOnly) {
+        return getCoins().getAll(accountIndex, unspentOnly);
+    }
+
+    private Coins coins = null;
+
+    private Coins getCoins() {
+        if (coins == null) {
+            coins = new Coins(getCoinsJ());
+        }
+        return coins;
+    }
+
+    private native long getCoinsJ();
+
 //virtual void setListener(WalletListener *) = 0;
 
     private native long setListenerJ(WalletListener listener);
@@ -444,8 +443,7 @@ public class Wallet {
         if (label.equals(NEW_ACCOUNT_NAME)) {
             String address = getAddress(accountIndex);
             int len = address.length();
-            label = address.substring(0, 6) +
-                    "\u2026" + address.substring(len - 6, len);
+            label = address.substring(0, 6) + "\u2026" + address.substring(len - 6, len);
         }
         return label;
     }
@@ -504,4 +502,22 @@ public class Wallet {
 
     private native int getDeviceTypeJ();
 
+    @Getter
+    @Setter
+    PocketChangeSetting pocketChangeSetting = PocketChangeSetting.of(false, 0);
+
+    @Value(staticConstructor = "of")
+    static public class PocketChangeSetting {
+        boolean enabled;
+        long amount;
+
+        public String toPrefString() {
+            return Long.toString((enabled ? 1 : -1) * amount);
+        }
+
+        static public PocketChangeSetting from(String prefString) {
+            long value = Long.parseLong(prefString);
+            return of(value > 0, Math.abs(value));
+        }
+    }
 }

app/src/main/java/com/m2049r/xmrwallet/service/WalletService.java

@@ -318,9 +318,10 @@ public class WalletService extends Service {
 
                             TxData txData = extras.getParcelable(REQUEST_CMD_TX_DATA);
                             String txTag = extras.getString(REQUEST_CMD_TX_TAG);
+                            assert txData != null;
+                            txData.createPocketChange(myWallet);
                             PendingTransaction pendingTransaction = myWallet.createTransaction(txData);
                             PendingTransaction.Status status = pendingTransaction.getStatus();
-                            Timber.d("transaction status %s", status);
                             if (status != PendingTransaction.Status.Status_Ok) {
                                 Timber.w("Create Transaction failed: %s", pendingTransaction.getErrorString());
                             }

app/src/main/java/com/m2049r/xmrwallet/service/exchange/api/ExchangeApi.java

@@ -33,5 +33,6 @@ public interface ExchangeApi {
     void queryExchangeRate(@NonNull final String baseCurrency, @NonNull final String quoteCurrency,
                            @NonNull final ExchangeCallback callback);
 
+    String getName();
 }
 

app/src/main/java/com/m2049r/xmrwallet/service/exchange/ecb/ExchangeApiImpl.java

@@ -67,9 +67,9 @@ public class ExchangeApiImpl implements ExchangeApi {
         // data is daily and is refreshed around 16:00 CET every working day
     }
 
-    public static boolean isSameDay(Calendar calendar, Calendar anotherCalendar) {
-        return (calendar.get(Calendar.YEAR) == anotherCalendar.get(Calendar.YEAR)) &&
-                (calendar.get(Calendar.DAY_OF_YEAR) == anotherCalendar.get(Calendar.DAY_OF_YEAR));
+    @Override
+    public String getName() {
+        return "ecb";
     }
 
     @Override
@@ -121,12 +121,12 @@ public class ExchangeApiImpl implements ExchangeApi {
         final NetCipherHelper.Request httpRequest = new NetCipherHelper.Request(baseUrl);
         httpRequest.enqueue(new okhttp3.Callback() {
             @Override
-            public void onFailure(final Call call, final IOException ex) {
+            public void onFailure(@NonNull final Call call, @NonNull final IOException ex) {
                 callback.onError(ex);
             }
 
             @Override
-            public void onResponse(final Call call, final Response response) throws IOException {
+            public void onResponse(@NonNull final Call call, @NonNull final Response response) throws IOException {
                 if (response.isSuccessful()) {
                     try {
                         DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
@@ -178,11 +178,12 @@ public class ExchangeApiImpl implements ExchangeApi {
                     Element cube = (Element) node;
                     if (cube.hasAttribute("time")) { // a time Cube
                         final Date time = DATE_FORMAT.parse(cube.getAttribute("time"));
+                        assert time != null;
                         date.setTime(time);
                     } else if (cube.hasAttribute("currency")
                             && cube.hasAttribute("rate")) { // a rate Cube
                         String currency = cube.getAttribute("currency");
-                        double rate = Double.valueOf(cube.getAttribute("rate"));
+                        double rate = Double.parseDouble(cube.getAttribute("rate"));
                         entries.put(currency, rate);
                     } // else an empty Cube - ignore
                 }
@@ -191,13 +192,10 @@ public class ExchangeApiImpl implements ExchangeApi {
             Timber.d(ex);
         }
         synchronized (this) {
-            if (date != null) {
-                fetchDate = Calendar.getInstance(TimeZone.getTimeZone("CET"));
-                fxDate = date;
-                fxEntries.clear();
-                fxEntries.putAll(entries);
-            }
-            // else don't change what we have
+            fetchDate = Calendar.getInstance(TimeZone.getTimeZone("CET"));
+            fxDate = date;
+            fxEntries.clear();
+            fxEntries.putAll(entries);
         }
     }
 }

app/src/main/java/com/m2049r/xmrwallet/service/exchange/kraken/ExchangeApiImpl.java

@@ -51,6 +51,11 @@ public class ExchangeApiImpl implements ExchangeApi {
         this(HttpUrl.parse("https://api.kraken.com/0/public/Ticker"));
     }
 
+    @Override
+    public String getName() {
+        return "kraken";
+    }
+
     @Override
     public void queryExchangeRate(@NonNull final String baseCurrency, @NonNull final String quoteCurrency,
                                   @NonNull final ExchangeCallback callback) {

app/src/main/java/com/m2049r/xmrwallet/service/exchange/krakenFiat/ExchangeApiImpl.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019 m2049r@monerujo.io
+ * Copyright (c) 2019-2023 m2049r@monerujo.io
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,7 +16,7 @@
 
 // https://developer.android.com/training/basics/network-ops/xml
 
-package com.m2049r.xmrwallet.service.exchange.krakenEcb;
+package com.m2049r.xmrwallet.service.exchange.krakenFiat;
 
 import androidx.annotation.NonNull;
 
@@ -24,23 +24,39 @@ import com.m2049r.xmrwallet.service.exchange.api.ExchangeApi;
 import com.m2049r.xmrwallet.service.exchange.api.ExchangeCallback;
 import com.m2049r.xmrwallet.service.exchange.api.ExchangeRate;
 import com.m2049r.xmrwallet.util.Helper;
+import com.m2049r.xmrwallet.util.ServiceHelper;
 
 import timber.log.Timber;
 
 /*
-    Gets the XMR/EUR rate from kraken and then gets the EUR/fiat rate from the ECB
+    Gets the XMR/EUR rate from kraken and then gets the EUR/fiat rate from the yadio
  */
 
 public class ExchangeApiImpl implements ExchangeApi {
     static public final String BASE_FIAT = "EUR";
 
+    final ExchangeApi krakenApi = new com.m2049r.xmrwallet.service.exchange.kraken.ExchangeApiImpl();
+
+    private ExchangeApi getFiatApi(String symbol) {
+        return ServiceHelper.getFiatApi(symbol);
+    }
+
+    @Override
+    public String getName() {
+        return krakenApi.getName() + "+";
+    }
+
+    public String getRealName(String fiatService) {
+        return getName() + fiatService;
+    }
+
     @Override
     public void queryExchangeRate(@NonNull final String baseCurrency, @NonNull final String quoteCurrency,
                                   @NonNull final ExchangeCallback callback) {
         Timber.d("B=%s Q=%s", baseCurrency, quoteCurrency);
         if (baseCurrency.equals(quoteCurrency)) {
             Timber.d("BASE=QUOTE=1");
-            callback.onSuccess(new ExchangeRateImpl(baseCurrency, quoteCurrency, 1.0));
+            callback.onSuccess(new ExchangeRateImpl(getName(), baseCurrency, quoteCurrency, 1.0));
             return;
         }
 
@@ -52,24 +68,21 @@ public class ExchangeApiImpl implements ExchangeApi {
 
         final String quote = Helper.BASE_CRYPTO.equals(baseCurrency) ? quoteCurrency : baseCurrency;
 
-        final ExchangeApi krakenApi =
-                new com.m2049r.xmrwallet.service.exchange.kraken.ExchangeApiImpl();
         krakenApi.queryExchangeRate(Helper.BASE_CRYPTO, BASE_FIAT, new ExchangeCallback() {
             @Override
             public void onSuccess(final ExchangeRate krakenRate) {
                 Timber.d("kraken = %f", krakenRate.getRate());
-                final ExchangeApi ecbApi =
-                        new com.m2049r.xmrwallet.service.exchange.ecb.ExchangeApiImpl();
-                ecbApi.queryExchangeRate(BASE_FIAT, quote, new ExchangeCallback() {
+                final ExchangeApi fiatApi = getFiatApi(quote);
+                fiatApi.queryExchangeRate(BASE_FIAT, quote, new ExchangeCallback() {
                     @Override
-                    public void onSuccess(final ExchangeRate ecbRate) {
-                        Timber.d("ECB = %f", ecbRate.getRate());
-                        double rate = ecbRate.getRate() * krakenRate.getRate();
+                    public void onSuccess(final ExchangeRate fiatRate) {
+                        Timber.d("FIAT = %f", fiatRate.getRate());
+                        double rate = fiatRate.getRate() * krakenRate.getRate();
                         Timber.d("Q=%s QC=%s", quote, quoteCurrency);
                         if (!quote.equals(quoteCurrency)) rate = 1.0d / rate;
                         Timber.d("rate = %f", rate);
                         final ExchangeRate exchangeRate =
-                                new ExchangeRateImpl(baseCurrency, quoteCurrency, rate);
+                                new ExchangeRateImpl(getRealName(fiatApi.getName()), baseCurrency, quoteCurrency, rate);
                         callback.onSuccess(exchangeRate);
                     }
 

app/src/main/java/com/m2049r/xmrwallet/service/exchange/krakenFiat/ExchangeRateImpl.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2019-2023 m2049r et al.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.m2049r.xmrwallet.service.exchange.krakenFiat;
+
+import androidx.annotation.NonNull;
+
+import com.m2049r.xmrwallet.service.exchange.api.ExchangeApi;
+import com.m2049r.xmrwallet.service.exchange.api.ExchangeRate;
+
+import lombok.Getter;
+
+class ExchangeRateImpl implements ExchangeRate {
+    @Getter
+    private final String serviceName;
+    @Getter
+    private final String baseCurrency;
+    @Getter
+    private final String quoteCurrency;
+    @Getter
+    private final double rate;
+
+    ExchangeRateImpl(@NonNull final String serviceName, @NonNull final String baseCurrency, @NonNull final String quoteCurrency, double rate) {
+        super();
+        this.serviceName = serviceName;
+        this.baseCurrency = baseCurrency;
+        this.quoteCurrency = quoteCurrency;
+        this.rate = rate;
+    }
+}