# frozen_string_literal: true

class SubmitFormDownloadController < ApplicationController
  skip_before_action :authenticate_user!
  skip_authorization_check

  FILES_TTL = 5.minutes

  def index
    submitter = Submitter.find_by!(slug: params[:submit_form_slug])

    return redirect_to submitter_download_index_path(submitter.slug) if submitter.completed_at?

    return head :unprocessable_entity if submitter.declined_at? ||
                                         submitter.submission.archived_at? ||
                                         submitter.submission.expired? ||
                                         submitter.submission.template.archived_at?

    last_completed_submitter = submitter.submission.submitters
                                        .where.not(id: submitter.id)
                                        .where.not(completed_at: nil)
                                        .max_by(&:completed_at)

    attachments =
      if last_completed_submitter
        Submitters.select_attachments_for_download(last_completed_submitter)
      else
        submitter.submission.template.schema_documents.preload(:blob)
      end

    urls = attachments.map do |attachment|
      ActiveStorage::Blob.proxy_url(attachment.blob, expires_at: FILES_TTL.from_now.to_i)
    end

    render json: urls
  end
end