require 'mini_magick'

class Harmony::Service::Utils::Image
  def resize(uri, max_width, format: 'jpeg')
    output_filepath = "/tmp/output.#{DateTime.now.strftime('%Q')}.#{format}"
    image = MiniMagick::Image.open(uri)
    image.resize max_width
    image.format format
    image.write output_filepath
    File.new(output_filepath)
  end
end