module ActionDispatch::Session::LegacySupport

def self.included(klass)
  [
    :get_session,
    :get_session_model,
    :write_session,
    :delete_session,
    :find_session
  ].each do |m|
    klass.send(:alias_method, "#{m}_rails5".to_sym, m)
    klass.send(:remove_method, m)
  end
end

def destroy_session(env, session_id, options)
  request = EnvWrapper.new(env)
  if sid = current_session_id(request.env)
    get_session_model(request, sid).destroy
    request.env[self.class::SESSION_RECORD_KEY] = nil
  end
  generate_sid unless options[:drop]
end

def find_session(id)
  self.class.session_class.find_by_session_id(id) || self.class.session_class.new(:session_id => id, :data => {})
end

def get_session(env, sid)
  request = EnvWrapper.new(env)
  get_session_rails5(request, sid)
end

def get_session_model(request, sid)
  if request.env[self.class::ENV_SESSION_OPTIONS_KEY][:id].nil?
    request.env[self.class::SESSION_RECORD_KEY] = find_session(sid)
  else
    request.env[self.class::SESSION_RECORD_KEY] ||= find_session(sid)
  end
end

def set_session(env, sid, session_data, options)
  request = EnvWrapper.new(env)
  write_session_rails5(request, sid, session_data, options)
end