pulibrary / pdc_describe / 4e4e59fc-9df4-4838-9fd4-6c7ea33cdb7c

class Readme

  attr_reader :work, :current_user

  def initialize(work, current_user)

    @work = work

    @current_user = current_user

  end

  def attach(readme_file_param)

    return "A README file is required!" if readme_file_param.blank? && blank?

    return nil if readme_file_param.blank?

    remove_old_readme

    key = upload_readme(readme_file_param)

    if key

      @file_names = [readme_file_param.original_filename]

      @s3_readme_idx = 0

      log_changes

      nil

    else

      "An error uploading your README was encountered.  Please try again."

    end

  end

  def blank?

    s3_readme_idx.nil?

  end

  def file_name

    return nil if blank?

    file_names[s3_readme_idx]

  end

    private

      def s3_readme_idx

        @s3_readme_idx ||= file_names.find_index { |file_name| file_name.upcase.include?("README") }

      end

      def file_names

        @file_names ||= work.pre_curation_uploads.map(&:filename_display)

      end

      def remove_old_readme

        return if blank?

        work.s3_query_service.delete_s3_object(work.pre_curation_uploads[s3_readme_idx].key)

      end

      def upload_readme(readme_file_param)

        readme_name = readme_file_param.original_filename

        size = readme_file_param.size

        work.s3_query_service.upload_file(io: readme_file_param.to_io, filename: readme_name, size:)

      end

      def log_changes

        work.s3_query_service.client_s3_files(reload: true)

        work.reload_snapshots(user_id: current_user.id)

      end

end