Reworked signer mechanism

Author: GuiSim

pom.xml

@@ -4,7 +4,7 @@
 	<groupId>com.xero</groupId>
 	<artifactId>xero-java-sdk</artifactId>
 	<packaging>jar</packaging>
-	<version>0.4.7</version>
+	<version>0.5.0-PLEO</version>
 	<name>Xero-Java SDK</name>
 	<url>http://maven.apache.org</url>
 	<dependencies>

src/main/java/com/xero/api/ConfigBasedSignerFactory.java

@@ -0,0 +1,22 @@
+package com.xero.api;
+
+import com.google.api.client.auth.oauth.OAuthSigner;
+
+public class ConfigBasedSignerFactory implements SignerFactory {
+  private static final String PUBLIC_APP = "PUBLIC";
+  private Config config;
+
+  public ConfigBasedSignerFactory(Config config) {
+    this.config = config;
+  }
+
+  @Override
+  public OAuthSigner createSigner(String tokenSharedSecret) {
+    if (config.getAppType().equals(PUBLIC_APP)) {
+      return new HmacSignerFactory(config.getConsumerSecret()).createSigner(tokenSharedSecret);
+    } else {
+      return new RsaSignerFactory(config.getPathToPrivateKey(), config.getPrivateKeyPassword()).createSigner(
+        tokenSharedSecret);
+    }
+  }
+}

src/main/java/com/xero/api/HmacSigner.java

@@ -0,0 +1,20 @@
+package com.xero.api;
+
+import com.google.api.client.auth.oauth.OAuthHmacSigner;
+
+public class HmacSignerFactory implements SignerFactory {
+
+  private String consumerSecret;
+
+  public HmacSignerFactory(String consumerSecret) {
+    this.consumerSecret = consumerSecret;
+  }
+
+  @Override
+  public OAuthHmacSigner createSigner(String tokenSecret) {
+    OAuthHmacSigner signer = new OAuthHmacSigner();
+    signer.tokenSharedSecret = tokenSecret;
+    signer.clientSharedSecret = consumerSecret;
+    return signer;
+  }
+}