Tracking Castle login events through Warden hooks

warden.rb

# In Rails you would but this is in config/initializers/castle.rb

# Track $login.succeeded
Warden::Manager.after_set_user :except => :fetch do |user, warden, opts|
  next unless opts[:scope] == :user # exclude e.g. admin users

  castle = Castle::Client.from_request(warden.request)

  begin
    castle.track(
      user_id: user.id,
      event: '$login.succeeded',
      traits: {
        email: user.email,
        created_at: user.created_at
      }
    )
  rescue ::Castle::Error => e
  end
end

# Track $login.failed
Warden::Manager.on_request do |warden, opts|
  next unless [
    '/users/sign_in', # e.g. web
    '/api/sessions'   # e.g. mobile, token auth
  ].include?(warden.request.headers['PATH_INFO'])

  # IMPLEMENT: update to your form structure
  next unless warden.request.params['user']
  email = warden.request.params['user']['email']
  password = warden.request.params['user']['password']

  user = User.find_by_email(email)

  next if user.present? && user.valid_password?(password)

  castle = Castle::Client.from_request(warden.request)

  begin
    castle.track(
      user_id: user && user.id,
      event: '$login.failed',
      details: {
        email: email
      }
    )
  rescue ::Castle::Error => e
  end
end