EMI-Backend/middleware/sessionChecker.js

const { getSessionId, getUserId, getProfileId } = require('../utils/sessionUtils');
const { client_logger } = require('../utils/analyticsLogger');
const { cookiesOptions } = require('../config/cookiesOptions');
const MongoDB = require("../mongoDB.js");

const sessionChecker = async (req, res, next) => {
    const session_id = getSessionId(req);
    const user_sid = getUserId(req);
    let profile_id = getProfileId(req);

    if (session_id && user_sid) {
        DB = await MongoDB.getDB;
        const userInfo = await DB.checkSessionOnDB(session_id, user_sid);
        req.userInfo = userInfo;

        if (!await DB.getProfileCache(profile_id)) {
            const latestProfile = await DB.latestProfile(user_sid);
            res.cookie('profile_id', latestProfile._id, cookiesOptions);
            profile_id = latestProfile._id;
        }

        req.profileInfo = { _id: profile_id };

        if (!userInfo) return res.redirect('/login');

        // Log Request
        client_logger.capture({
            distinctId: user_sid,
            event: 'server@' + req.method + '@' + req.originalUrl,
        });

        next();
    } else {
        return res.redirect('/login');
    }
};

module.exports = sessionChecker;