Server: Added get balance endpoint

src/controllers/balance.js

@@ -0,0 +1,11 @@
+let data = require("../data");
+
+const getBalance = (req, res) => {
+  return res.status(200).json({
+    balance: data.accountValue
+  });
+};
+
+module.exports = {
+  getBalance
+};

src/routes/balance.js

@@ -0,0 +1,17 @@
+const express = require("express");
+const balance = express.Router();
+
+const { getBalance } = require("../controllers/balance");
+
+// Fetch current account balance
+balance.get("/", getBalance);
+
+// handle 404 error
+balance.use((req, res) => {
+  res.status(404).json({
+    status: 404,
+    msg: "Not Found."
+  });
+});
+
+module.exports = balance;

src/server.js

@@ -1,15 +1,19 @@
 /**
- * Note: As i understood i shouldn't be using any types of persistent database such as mysql or postgresql instead in-memory storage so the data is going to be in the form of plain objects
+ * Note: As i understood i shouldn't be using any types of persistent database
+ * such as mysql or postgresql, instead in-memory storage is required
+ * so the data is going to be stored in the form of plain objects
  */
 const express = require("express");
 
 const transactions = require("./routes/transactions");
+const balance = require("./routes/balance");
 
 const app = express();
 
 const port = 3000;
 
 app.use("/transactions", transactions);
+app.use("/balance", balance);
 
 app.use((req, res) => {
   return res.status(404).json({