Auth.ts

import jwt, { Secret, JwtPayload } from 'jsonwebtoken';
import { Request, Response, NextFunction } from 'express';
import Config from '../../config'

export const SECRET_KEY: Secret = process.env.JWT_PRIVATE_KEY || "";

export interface CustomJWTRequest extends Request {
 token?: string | JwtPayload | TokenData;
}

export type TokenData = {
  userId: string,
  username: string,
  admin: boolean
}

export const authorize = async (req: Request, res: Response, next: NextFunction) => {
 try {
    const authHeader = req.headers.authorization;
    const token = authHeader?.split(" ")[1];

   if (!token) {
     throw new Error();
   }

   const decoded = jwt.verify(token, SECRET_KEY);
   (req as CustomJWTRequest).token = decoded;

   next();
 } catch (err) {
  console.log(err)
   res.status(401).send('Please authenticate');
 }
};