Refactor nodejs generated code structure (#4909)

* read directly from templates

* refactor nodejs structure

* dont inject into global scope

* move to 2 spaces consistently

samples/server/petstore/nodejs/service/StoreService.js

@@ -0,0 +1,91 @@
+'use strict';
+
+
+/**
+ * Delete purchase order by ID
+ * For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
+ *
+ * orderId String ID of the order that needs to be deleted
+ * no response value expected for this operation
+ **/
+exports.deleteOrder = function(orderId) {
+  return new Promise(function(resolve, reject) {
+    resolve();
+  });
+}
+
+
+/**
+ * Returns pet inventories by status
+ * Returns a map of status codes to quantities
+ *
+ * returns Map
+ **/
+exports.getInventory = function() {
+  return new Promise(function(resolve, reject) {
+    var examples = {};
+    examples['application/json'] = {
+  "key" : 123
+};
+    if (Object.keys(examples).length > 0) {
+      resolve(examples[Object.keys(examples)[0]]);
+    } else {
+      resolve();
+    }
+  });
+}
+
+
+/**
+ * Find purchase order by ID
+ * For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions
+ *
+ * orderId Long ID of pet that needs to be fetched
+ * returns Order
+ **/
+exports.getOrderById = function(orderId) {
+  return new Promise(function(resolve, reject) {
+    var examples = {};
+    examples['application/json'] = {
+  "id" : 123456789,
+  "petId" : 123456789,
+  "complete" : true,
+  "status" : "aeiou",
+  "quantity" : 123,
+  "shipDate" : "2000-01-23T04:56:07.000+00:00"
+};
+    if (Object.keys(examples).length > 0) {
+      resolve(examples[Object.keys(examples)[0]]);
+    } else {
+      resolve();
+    }
+  });
+}
+
+
+/**
+ * Place an order for a pet
+ * 
+ *
+ * body Order order placed for purchasing the pet
+ * returns Order
+ **/
+exports.placeOrder = function(body) {
+  return new Promise(function(resolve, reject) {
+    var examples = {};
+    examples['application/json'] = {
+  "id" : 123456789,
+  "petId" : 123456789,
+  "complete" : true,
+  "status" : "aeiou",
+  "quantity" : 123,
+  "shipDate" : "2000-01-23T04:56:07.000+00:00"
+};
+    if (Object.keys(examples).length > 0) {
+      resolve(examples[Object.keys(examples)[0]]);
+    } else {
+      resolve();
+    }
+  });
+}
+