text: const jwt = require("jsonwebtoken");
  
  // set token secret and expiration date
  const secret = "mysecretsshhhhh";
  const expiration = "2h";
  
  
  module.exports = {
    // function for our authenticated routes
    authMiddleware: function ({ req })
    {
      // allows token to be sent via req.body, req.query, or headers
      let token = req.body.token || req.query.token || req.headers.authorization;
  
      // separate "Bearer" from "<tokenvalue>"
      if (req.headers.authorization)
      {
        token = token.split(" ").pop().trim();
      }
  
      // if no token, return request object as is
      if (!token)
      {
        return req;
      }
  
      try
      {
        // decode and attach user data to request object
        const { data } = jwt.verify(token, secret, { maxAge: expiration });
        req.user = data;
      } catch {
        console.log("Invalid token");
      }
  
      // return updated request object
      return req;
    },
  
    signToken: function ({ username, email, _id })
    {
      const payload = { username, email, _id };
  
      return jwt.sign({ data: payload }, secret, { expiresIn: expiration });
    },
  };
  