receiver

  # GET /entries/:hashtag/receiver
  # POST /entries/:hashtag/receiver.json
  def receiver
    if request.method == 'GET' and !params['hub.challenge'].blank? and params['hub.mode'] == 'subscribe'
      if !params['hub.verify_token'].blank?
        game = Game.find_by_token(params['hub.verify_token'])
        if !game.nil? and game.hashtag == params[:hashtag]
          render :status => 200, :text => params['hub.challenge']
        else
          InstagaMe::Log.rails "bad token match for #{params['hub.verify_token']}; returning status 406"
          render :status => 406, :text => "unauthorized token"
        end
      else
        render :status => 200, :text => params['hub.challenge']
      end
      return
    elsif request.method == 'POST' and params[:hashtag] == params[:_json][0][:object_id]
      # TODO: Need hexdigest match code here > help requested
      # logger.info Instagram.client_secret.inspect
      # logger.info params[:_json].inspect
      # logger.info request.env['HTTP_X_HUB_SIGNATURE'].inspect
      # logger.info HMAC::SHA1.hexdigest(Instagram.client_secret, params[:_json].to_s)
      game = Game.find_by_hashtag(params[:hashtag])
      raise InstagaMe::Errors::GameNilError if game.nil?
      if game.running?
        client = Instagram.client(:access_token => game.instagator.access_token)
        media = client.tag_recent_media(game.hashtag, {:count => 1})
        InstagaMe::Media.create_or_update(game, media[0])
        Delayed::Job.enqueue(GameRankJob.new(game.id), :priority => -1)
        Delayed::Job.enqueue(CacheClearJob.new("games/#{game.hashtag}/entries"), :priority => -1)
        Delayed::Job.enqueue(CacheClearJob.new("games#index"), :priority => -1)
        tag = client.tag(game.hashtag)
        if !tag.nil? and !tag.media_count.blank? and tag.media_count.to_i > game.entries.size
          Delayed::Job.enqueue(CollectMissingEntriesJob.new(game.id), :priority => -10)
        end
      end
    end
    render :status => 200, :nothing => true
    return
  end