baclight/app/models/id_card/network_logo.rb

module IdCard
  class NetworkLogo < ApplicationRecord
    # before_validation :resize_logo, if: :image_data_changed?
    # before_validation :calculate_aspect_ratio, if: :image_data_changed?
    before_validation :process_image, if: :image_data_changed?

    scope :defaults, -> { where(default: true) }

    class << self

      def medcost
        defaults.where("filename LIKE ?", "%MedCost%")
      end

      def cigna
        defaults.where("filename LIKE ?", "%Cigna%")
      end

    end

    private

    def process_image
      image = Vips::Image.new_from_buffer(self.image_data, "")

      resized_image = ImageProcessing::Vips
      .source(image)
      .resize_to_limit(nil, 400)

      processed_image = resized_image.convert("png").call
      new_image_data = processed_image.read
      if new_image_data
        self.image_data = new_image_data
        self.filename = File.basename(self.filename, File.extname(self.filename)) + ".png"
        self.content_type = "image/png"
      end

      image_ratio = image.width.to_f / image.height
      if image_ratio
        self.aspect_ratio = image_ratio.round(2)
      end
    end

    # def resize_logo
    #   image = Vips::Image.new_from_buffer(self.image_data, "")

    #   processed_image = ImageProcessing::Vips
    #   .source(image)
    #   .resize_to_limit(nil, 400)
    #   .call

    #   self.image_data = processed_image.read
    # end

    # def calculate_aspect_ratio
    #   image_io = StringIO.new(image_data)
    #   width, height = FastImage.size(image_io)
    #   image_ratio = width.to_f / height
    #   if image_ratio
    #     self.aspect_ratio = image_ratio.round(2)
    #   end
    # end

  end
end