Introduce io.bitsquare.btc.UserAgent

This makes things generally more explicit and reduces the number of
String arguments in the WalletFacade constructor.

src/main/java/io/bitsquare/app/BitsquareEnvironment.java

@@ -18,6 +18,7 @@
 package io.bitsquare.app;
 
 import io.bitsquare.BitsquareException;
+import io.bitsquare.btc.UserAgent;
 import io.bitsquare.btc.WalletFacade;
 import io.bitsquare.persistence.Persistence;
 
@@ -71,10 +72,12 @@ public class BitsquareEnvironment extends StandardEnvironment {
     private PropertySource<?> defaultProperties(String appName) {
         return new PropertiesPropertySource(BITSQUARE_DEFAULT_PROPERTY_SOURCE_NAME, new Properties() {{
             setProperty(APP_NAME_KEY, appName);
+
+            setProperty(UserAgent.NAME_KEY, appName);
+            setProperty(UserAgent.VERSION_KEY, "0.1");
+
             setProperty(WalletFacade.DIR_KEY, AppDirectory.dir(appName).toString());
             setProperty(WalletFacade.PREFIX_KEY, appName);
-            setProperty(WalletFacade.USERAGENT_NAME_KEY, appName);
-            setProperty(WalletFacade.USERAGENT_VERSION_KEY, "0.1");
 
             setProperty(Persistence.DIR_KEY, AppDirectory.dir(appName).toString());
             setProperty(Persistence.PREFIX_KEY, appName + "_pref");

src/main/java/io/bitsquare/btc/BitcoinModule.java

@@ -31,7 +31,6 @@ import java.io.File;
 import org.springframework.core.env.Environment;
 
 import static com.google.inject.name.Names.named;
-import static io.bitsquare.btc.WalletFacade.*;
 
 public class BitcoinModule extends BitsquareModule {
 
@@ -44,14 +43,18 @@ public class BitcoinModule extends BitsquareModule {
 
     @Override
     protected void configure() {
+        bind(NetworkParameters.class).toInstance(network());
+        bind(FeePolicy.class).asEagerSingleton();
+
+        bindConstant().annotatedWith(named(UserAgent.NAME_KEY)).to(env.getRequiredProperty(UserAgent.NAME_KEY));
+        bindConstant().annotatedWith(named(UserAgent.VERSION_KEY)).to(env.getRequiredProperty(UserAgent.VERSION_KEY));
+        bind(UserAgent.class).asEagerSingleton();
+
         File walletDir = new File(env.getRequiredProperty(WalletFacade.DIR_KEY));
         bind(File.class).annotatedWith(named(WalletFacade.DIR_KEY)).toInstance(walletDir);
         bindConstant().annotatedWith(named(WalletFacade.PREFIX_KEY)).to(env.getRequiredProperty(WalletFacade.PREFIX_KEY));
-        bindConstant().annotatedWith(named(USERAGENT_NAME_KEY)).to(env.getRequiredProperty(USERAGENT_NAME_KEY));
-        bindConstant().annotatedWith(named(USERAGENT_VERSION_KEY)).to(env.getRequiredProperty(USERAGENT_VERSION_KEY));
-        bind(NetworkParameters.class).toInstance(network());
-        bind(FeePolicy.class).asEagerSingleton();
         bind(WalletFacade.class).asEagerSingleton();
+
         bind(BlockChainFacade.class).asEagerSingleton();
     }
 

src/main/java/io/bitsquare/btc/UserAgent.java

@@ -0,0 +1,44 @@
+/*
+ * This file is part of Bitsquare.
+ *
+ * Bitsquare is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Bitsquare is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Bitsquare. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.bitsquare.btc;
+
+import javax.inject.Inject;
+import javax.inject.Named;
+
+public class UserAgent {
+    public static final String NAME_KEY = "useragent.name";
+    public static final String VERSION_KEY = "useragent.version";
+
+    private final String name;
+    private final String version;
+
+    @Inject
+    public UserAgent(@Named(NAME_KEY) String name, @Named(VERSION_KEY) String version) {
+        this.name = name;
+        this.version = version;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getVersion() {
+        return version;
+    }
+}
+

src/main/java/io/bitsquare/btc/WalletFacade.java

@@ -97,8 +97,6 @@ public class WalletFacade {
 
     public static final String DIR_KEY = "wallet.dir";
     public static final String PREFIX_KEY = "wallet.prefix";
-    public static final String USERAGENT_NAME_KEY = "bitcoin.useragent.name";
-    public static final String USERAGENT_VERSION_KEY = "bitcoin.useragent.version";
 
     private final List<AddressConfidenceListener> addressConfidenceListeners = new CopyOnWriteArrayList<>();
     private final List<TxConfidenceListener> txConfidenceListeners = new CopyOnWriteArrayList<>();
@@ -111,8 +109,7 @@ public class WalletFacade {
     private final Persistence persistence;
     private final File walletDir;
     private final String walletPrefix;
-    private final String userAgentName;
-    private final String userAgentVersion;
+    private final UserAgent userAgent;
 
     private WalletAppKit walletAppKit;
     private Wallet wallet;
@@ -126,20 +123,16 @@ public class WalletFacade {
     ///////////////////////////////////////////////////////////////////////////////////////////
 
     @Inject
-    public WalletFacade(NetworkParameters params, FeePolicy feePolicy,
-                        CryptoFacade cryptoFacade, Persistence persistence,
-                        @Named(DIR_KEY) File walletDir,
-                        @Named(PREFIX_KEY) String walletPrefix,
-                        @Named(USERAGENT_NAME_KEY) String userAgentName,
-                        @Named(USERAGENT_VERSION_KEY) String userAgentVersion) {
+    public WalletFacade(NetworkParameters params, FeePolicy feePolicy, CryptoFacade cryptoFacade,
+                        Persistence persistence, UserAgent userAgent,
+                        @Named(DIR_KEY) File walletDir, @Named(PREFIX_KEY) String walletPrefix) {
         this.params = params;
         this.feePolicy = feePolicy;
         this.cryptoFacade = cryptoFacade;
         this.persistence = persistence;
         this.walletDir = walletDir;
         this.walletPrefix = walletPrefix;
-        this.userAgentName = userAgentName;
-        this.userAgentVersion = userAgentVersion;
+        this.userAgent = userAgent;
     }
 
 
@@ -210,7 +203,7 @@ public class WalletFacade {
 
         walletAppKit.setDownloadListener(downloadListener)
                 .setBlockingStartup(false)
-                .setUserAgent(userAgentName, userAgentVersion);
+                .setUserAgent(userAgent.getName(), userAgent.getVersion());
 
         /*
         // TODO restore from DeterministicSeed