module ApplicationCable
  class Connection < ActionCable::Connection::Base
    identified_by :current_user

    def connect
      payload = JsonWebToken.decode(token_from_header)
      self.current_user = User.find_by(id: payload[:user_id]) if payload
      reject_unauthorized_connection unless current_user
    end

    private

    def token_from_header
      request.headers["Authorization"].to_s.delete_prefix("Bearer ").presence
    end
  end
end