overleaf-cep/services/web/app/src/Features/Analytics/AnalyticsController.js

const metrics = require('@overleaf/metrics')
const AnalyticsManager = require('./AnalyticsManager')
const SessionManager = require('../Authentication/SessionManager')
const GeoIpLookup = require('../../infrastructure/GeoIpLookup')
const Features = require('../../infrastructure/Features')

module.exports = {
  updateEditingSession(req, res, next) {
    if (!Features.hasFeature('analytics')) {
      return res.sendStatus(202)
    }
    const userId = SessionManager.getLoggedInUserId(req.session)
    const { projectId } = req.params
    let countryCode = null

    if (userId) {
      GeoIpLookup.getDetails(req.ip, function (err, geoDetails) {
        if (err) {
          metrics.inc('analytics_geo_ip_lookup_errors')
        } else if (geoDetails && geoDetails.country_code) {
          countryCode = geoDetails.country_code
        }
        AnalyticsManager.updateEditingSession(userId, projectId, countryCode)
      })
    }
    res.sendStatus(202)
  },

  recordEvent(req, res, next) {
    if (!Features.hasFeature('analytics')) {
      return res.sendStatus(202)
    }
    const userId =
      SessionManager.getLoggedInUserId(req.session) || req.sessionID
    AnalyticsManager.recordEvent(userId, req.params.event, req.body)
    res.sendStatus(202)
  },
}