text: const jwt = require('jsonwebtoken');
  
  const auth = (req, res, next) => {
    const authHeader = req.header('Authorization-Flame');
    let token;
    let tokenIsValid = false;
  
    if (authHeader && authHeader.startsWith('Bearer ')) {
      token = authHeader.split(' ')[1];
    }
  
    if (token) {
      try {
        jwt.verify(token, process.env.SECRET);
      } finally {
        tokenIsValid = true;
      }
    }
  
    req.isAuthenticated = tokenIsValid;
  
    next();
  };
  
  module.exports = auth;
  