Add topics to chain id

beacon_node/client/src/client_config.rs

@@ -18,6 +18,21 @@ pub struct ClientConfig {
 
 impl Default for ClientConfig {
     fn default() -> Self {
+        let data_dir = {
+            let home = dirs::home_dir().expect("Unable to determine home dir.");
+            home.join(".lighthouse/")
+        };
+        fs::create_dir_all(&data_dir)
+            .unwrap_or_else(|_| panic!("Unable to create {:?}", &data_dir));
+
+        let default_spec = ChainSpec::lighthouse_testnet();
+        let default_pubsub_topics = vec![
+            default_spec.beacon_chain_topic.clone(),
+            default_spec.shard_topic_prefix.clone(),
+        ]; // simple singular attestation topic for now.
+        let default_net_conf =
+            NetworkConfig::new(default_spec.boot_nodes.clone(), default_pubsub_topics);
+
         Self {
             data_dir: PathBuf::from(".lighthouse"),
             db_type: "disk".to_string(),