Restructure Guice modules

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

@@ -0,0 +1,67 @@
+/*
+ * 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 org.bitcoinj.core.NetworkParameters;
+import org.bitcoinj.params.MainNetParams;
+import org.bitcoinj.params.RegTestParams;
+import org.bitcoinj.params.TestNet3Params;
+
+import com.google.inject.AbstractModule;
+
+import java.util.Properties;
+
+public class BitcoinModule extends AbstractModule {
+
+    private final Properties properties;
+    private final BitcoinNetwork defaultNetwork;
+
+    public BitcoinModule(Properties properties) {
+        this(properties, BitcoinNetwork.TESTNET);
+    }
+
+    public BitcoinModule(Properties properties, BitcoinNetwork defaultNetwork) {
+        this.properties = properties;
+        this.defaultNetwork = defaultNetwork;
+    }
+
+    @Override
+    protected void configure() {
+        bind(WalletFacade.class).asEagerSingleton();
+        bind(FeePolicy.class).asEagerSingleton();
+        bind(BlockChainFacade.class).asEagerSingleton();
+        bind(NetworkParameters.class).toInstance(network());
+    }
+
+    private NetworkParameters network() {
+            String networkName = properties.getProperty("networkType", defaultNetwork.name());
+
+            switch (BitcoinNetwork.valueOf(networkName.toUpperCase())) {
+                case MAINNET:
+                    return MainNetParams.get();
+                case TESTNET:
+                    return TestNet3Params.get();
+                case REGTEST:
+                    return RegTestParams.get();
+                default:
+                    throw new IllegalArgumentException("Unknown bitcoin network name: " + networkName);
+            }
+    }
+
+}
+