added register.js to store hash password to db

api/routes/register.js

@@ -0,0 +1,48 @@
+const express = require("express");
+const router = express.Router();
+const bcrypt = require("bcrypt"); // bcrypt for password hashing
+const db = require("../../config/db");
+
+// User registration endpoint
+router.post("/", async (req, res) => {
+  const { username, password } = req.body;
+
+  if (!username || !password) {
+    return res.status(400).send("Username and password are required");
+  }
+
+  // Check if the username already exists
+  const sqlCheck = "SELECT * FROM tbl_user WHERE username = ?";
+  db.query(sqlCheck, [username], async (err, results) => {
+    if (err) {
+      console.error(err);
+      return res.status(500).send("Server error");
+    }
+
+    if (results.length > 0) {
+      return res.status(400).send("Username already exists");
+    }
+
+    try {
+      // Hash the password using bcrypt
+      const saltRounds = 10;
+      const hashedPassword = await bcrypt.hash(password, saltRounds);
+
+      // Insert the new user into the database with the hashed password
+      const sqlInsert = "INSERT INTO tbl_user (username, password) VALUES (?, ?)";
+      db.query(sqlInsert, [username, hashedPassword], (err, result) => {
+        if (err) {
+          console.error(err);
+          return res.status(500).send("Server error");
+        }
+
+        res.status(201).send("User registered successfully");
+      });
+    } catch (error) {
+      console.error(error);
+      res.status(500).send("Error registering user");
+    }
+  });
+});
+
+module.exports = router;