create-nodeapi-backend/template/javascript/src/middleware/core.js

A powerful Node.js backend boilerplate with Express, MongoDB, Firebase, JWT auth, Nodemailer, cron jobs, input validation (Joi), and serverless support for Vercel. Scaffold a full-featured API backend in seconds.

const verifyAPI = (req, res, next) => {
    try {
      const { version } = req.params;
  
      if (version == "1") {
        next();
        return;
      }
  
      return res
        .status(401)
        .json({
          success: false,
          error: `Invalid API version v${version}, Refer to the Documentation for more information.`,
        });
    } catch (error) {
      onAPIinvalid(req, res);
    }
  };
  
  const APIVerified = (req, res) => {
    return res
      .status(200)
      .json({
        success: true,
        message:
          "Welcome 🚀",
      });
  };
  
  const onAPIinvalid = (req, res) => {
    return res
      .status(401)
      .json({
        success: false,
        error: `Invalid use of API, Refer to the Documentation for more information.`,
      });
  };
  
  module.exports = { verifyAPI, onAPIinvalid, APIVerified };