overleaf/services/web/app/src/Features/User/UserPrimaryEmailCheckHandler.js

const Settings = require('@overleaf/settings')

function requiresPrimaryEmailCheck({
  email,
  emails,
  lastPrimaryEmailCheck,
  signUpDate,
}) {
  const hasExpired = date =>
    Date.now() - date.getTime() > Settings.primary_email_check_expiration

  const primaryEmailConfirmedAt = emails.find(
    emailEntry => emailEntry.email === email
  ).confirmedAt

  if (primaryEmailConfirmedAt && !hasExpired(primaryEmailConfirmedAt)) {
    return false
  }

  if (lastPrimaryEmailCheck) {
    return hasExpired(lastPrimaryEmailCheck)
  } else {
    return hasExpired(signUpDate)
  }
}

module.exports = {
  requiresPrimaryEmailCheck,
}