cw_native_webp_conv.rb

# Carrierwave works incorrectly with file formatting. If you do not override
# path and url methods it will return you incorrect path and url to webp file
# respectively. Also you should add removing callback because Carrierwave could
# not delete webp file by itself because of incorrect path.
# Remove this hacks if this issue will be fixed.
class ItemGalleryUploader < ApplicationUploader
  WEBP_VERSION_NAME = :webpver

  def filename
    splitted = original_filename.split('.')
    splitted.pop
    "#{splitted.join('.')}.#{file.extension}"
  end

  before :remove, :clear_webp_file

  version WEBP_VERSION_NAME do
    process convert: :webp

    def path
      incorrect_path = super.split('.')
      incorrect_path.pop
      incorrect_path.join('.') + '.webp'
    end

    def url
      incorrect_path = super.split('.')
      incorrect_path.pop
      incorrect_path.join('.') + '.webp'
    end
  end

  def clear_webp_file
    path = self.try(WEBP_VERSION_NAME).try(:path)
    return unless path && File.exist?(path)
    File.unlink(path)
  end
end