Implement random.org API integration with random seed updater

src/main/java/wtf/beatrice/hidekobot/runnables/RandomOrgSeedTask.java

@@ -0,0 +1,33 @@
+package wtf.beatrice.hidekobot.runnables;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import wtf.beatrice.hidekobot.Cache;
+import wtf.beatrice.hidekobot.datasources.ConfigurationEntry;
+
+/**
+ * This runnable pulls a random seed from random.org and used it to feed a SecureRandom,
+ * if the integration is enabled.
+ * <br/>
+ * This is necessary since we are not directly accessing random.org for each random number we
+ * need, and thus, only the seed is random - not the algorithm applied to it to compute the numbers.
+ */
+public class RandomOrgSeedTask implements Runnable
+{
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(RandomOrgSeedTask.class);
+
+    @Override
+    public void run()
+    {
+        String apiKey = Cache.getRandomOrgApiKey();
+        if(apiKey != null &&
+                !apiKey.isEmpty() &&
+                !apiKey.equals(ConfigurationEntry.RANDOM_ORG_API_KEY.getDefaultValue()))
+        {
+            if(Cache.isVerbose()) LOGGER.info("Updating Random seed from random.org...");
+            Cache.initRandomOrg(Cache.getRandomOrgApiKey());
+            if(Cache.isVerbose()) LOGGER.info("Random.org seed updated!");
+        }
+    }
+}