btrc-hub/backend/app/representations/material_repr.rb

# frozen_string_literal: true


module MaterialRepr
  BASE = { only: [:id, :url, :created_at, :updated_at],
           methods: [:content_type],
           include: { tag: TagRepr::BASE,
                      created_by_user: UserRepr::BASE,
                      updated_by_user: UserRepr::BASE } }.freeze

  module_function

  def base material, host:
    material.as_json(BASE).merge(
        file: if material.file.attached?
                Rails.application.routes.url_helpers.rails_storage_proxy_url(
                    material.file, host:)
              end)
  end

  def many materials, host:
    materials.map { |m| base(m, host) }
  end
end