# lib/carrierwave/preload_adapter.rb

module Carrierwave
  module PreloadAdapter
    def mount_preload_uploader(attribute, uploader_class, **options)
      mount_uploader attribute, uploader_class, options

      define_method "#{attribute}=" do |data|
        uploader = PreloadUploader.build_preloaded(data)
        return super(data) if uploader.blank?

        @preload_uploaders ||= []
        @preload_uploaders << uploader
        super(uploader.file)
      end

      after_save { [*@preload_uploaders].compact.each(&:remove!) }
    end

    def mount_preload_uploaders(attribute, uploader_class, **options)
      mount_uploaders attribute, uploader_class, options

      define_method "#{attribute}=" do |data|
        uploaders = data.map { |el| PreloadUploader.build_preloaded(el) }.compact
        return super(data) if uploaders.blank?

        @preload_uploaders ||= []
        @preload_uploaders += uploaders
        super(uploaders.map(&:file))
      end

      after_save { [*@preload_uploaders].compact.each(&:remove!) }
    end
  end
end