put register function in another module that can be used by embark and embark js

lib/modules/ens/index.js

@@ -104,7 +104,7 @@ class ENS {
       }
     });
 
-    let code = "";
+    let code = fs.readFileSync(utils.joinPath(__dirname, 'register.js')).toString();
     code += "\n" + fs.readFileSync(utils.joinPath(__dirname, 'embarkjs.js')).toString();
     code += "\nEmbarkJS.Names.registerProvider('ens', __embarkENS);";
 

lib/modules/ens/register.js

@@ -0,0 +1,47 @@
+const namehash = require('eth-ens-namehash');
+
+function registerSubDomain(ens, registrar, resolver, defaultAccount, subdomain, rootDomain, reverseNode, address, callback) {
+  console.log('Register', arguments);
+  const subnode = namehash.hash(subdomain);
+  const node = namehash.hash(`${subdomain}.${rootDomain}`);
+  const toSend = registrar.methods.register(subnode, defaultAccount);
+  let transaction;
+
+  toSend.estimateGas()
+  // Register domain
+    .then(gasEstimated => {
+      return toSend.send({gas: gasEstimated + 1000});
+    })
+    // Set resolver for the node
+    .then(transac => {
+      if (transac.status !== "0x1" && transac.status !== "0x01") {
+        console.warn('Failed transaction', transac);
+        return callback('Failed to register. Check gas cost.');
+      }
+      transaction = transac;
+      return ens.methods.setResolver(node, resolver.options.address).send();
+    })
+    // Set address for node
+    .then(_result => {
+      return resolver.methods.setAddr(node, address).send();
+    })
+    // Set resolver for the reverse node
+    .then(_result => {
+      return ens.methods.setResolver(reverseNode, resolver.options.address).send();
+    })
+    // Set name for reverse node
+    .then(_result => {
+      return resolver.methods.setName(reverseNode, subdomain + '.embark.eth').send();
+    })
+    .then(_result => {
+      callback(null, transaction);
+    })
+    .catch(err => {
+      callback('Failed to register with error: ' + (err.message || err));
+      console.error(err);
+    });
+}
+
+if (typeof module !== 'undefined' && module.exports) {
+  module.exports = registerSubDomain;
+}