began to refactor backend

backendV2/routes/app/database/userMgmt.database.js

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+import mysql from "mysql2";
+import dotenv from "dotenv";
+dotenv.config();
+
+const pool = mysql
+  .createPool({
+    host: process.env.DB_HOST,
+    user: process.env.DB_USER,
+    password: process.env.DB_PASSWORD,
+    database: process.env.DB_NAME,
+  })
+  .promise();
+
+export const loginFunc = async (username, password) => {
+  const [result] = await pool.query(
+    "SELECT * FROM users WHERE username = ? AND password = ?",
+    [username, password]
+  );
+  if (result.length > 0) return { success: true, data: result[0] };
+  return { success: false };
+};

backendV2/routes/app/loanMgmt.route.js

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+import express from "express";
+
+const router = express.Router();

backendV2/routes/app/userMgmt.route.js

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+import express from "express";
+import { authenticate, generateToken } from "../services/tokenService.js";
+const router = express.Router();
+import nodemailer from "nodemailer";
+import dotenv from "dotenv";
+dotenv.config();
+
+// database funcs import
+import { loginFunc } from "./database/userMgmt.database.js";
+
+router.post("/login", async (req, res) => {
+  const result = await loginFunc(req.body.username, req.body.password);
+  if (result.success) {
+    const token = await generateToken({
+      username: result.data.username,
+      role: result.data.role,
+    });
+    res.status(200).json({ message: "Login successful", token });
+  } else {
+    res.status(401).json({ message: "Invalid credentials" });
+  }
+});
+