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app/utils/jwt.util.js

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+/**
+ * Copyright (c) 2026 Niolla
+ * All rights reserved.
+ *
+ * This source code is proprietary and confidential.
+ * Unauthorized copying, modification, distribution, or use
+ * of this file, via any medium, is strictly prohibited.
+ */
+
+// app/utils/jwt.util.js
+
+const jwt = require("jsonwebtoken");
+require("dotenv").config();
+
+const JWT_SECRET = process.env.JWT_SECRET || "your_jwt_secret_key";
+const JWT_EXPIRES_IN = process.env.JWT_EXPIRES_IN || "1d"; // token validity
+
+/**
+ * Generate JWT token
+ * @param {Object} payload - usually { id, email, role }
+ * @returns string
+ */
+const generateToken = (payload) => {
+  return jwt.sign(payload, JWT_SECRET, { expiresIn: JWT_EXPIRES_IN });
+};
+
+/**
+ * Verify JWT token
+ * @param {string} token
+ * @returns payload or throws error
+ */
+const verifyToken = (token) => {
+  return jwt.verify(token, JWT_SECRET);
+};
+
+module.exports = { generateToken, verifyToken };