module ElasticsearchAble
  extend ActiveSupport::Concern

  private

  def default_options
    {
      debug: Rails.env.development?,
      highlight: highlight_options,
      body_options: body_options,
      page: page,
      per_page: per_page
    }
  end

  def keyword
    params[:keyword].to_s.strip.presence || '*'
  end

  def highlight_options
    {
      fragment_size: EduSetting.get('es_highlight_fragment_size') || 30,
      tag: '<span class="highlight">',
      fields: {
        name: { type: 'plain' },
        challenge_names: { type: 'plain' },
        challenge_tag_names: { type: 'plain' },
        description: { type: 'plain' },
        subject_stages: { type: 'plain' },
        content: { type: 'plain' },
        descendants_contents: { type: 'plain' },
      }
    }
  end

  def body_options
    {
      min_score: EduSetting.get('es_min_score') || 10
    }
  end

  def per_page
    per_page = params[:per_page].to_s.strip.presence || params[:limit].to_s.strip.presence
    per_page.to_i <= 0 ? 20 : per_page.to_i
  end

  def page
    params[:page].to_i <= 0 ? 1 : params[:page].to_i
  end
end