# frozen_string_literal: true

module Ezdoc
  module Nodes
    class Image < Base
      attr_reader :path, :width_emu, :height_emu, :rid, :filename

      EMUS_PER_INCH = 914_400
      EMUS_PER_CM = 360_000
      DEFAULT_DPI = 96

      def initialize(path, rid:, width_emu:, height_emu:)
        super()
        @path = path
        @rid = rid
        @width_emu = width_emu
        @height_emu = height_emu
        @filename = "image#{rid.delete_prefix("rId")}.#{extension}"
      end

      def extension
        case File.extname(@path).downcase
        when ".png" then "png"
        when ".jpg", ".jpeg" then "jpeg"
        else raise ArgumentError, "Unsupported image format: #{File.extname(@path)}"
        end
      end

      def content_type
        extension == "png" ? "image/png" : "image/jpeg"
      end

      def doc_pr_id
        rid.delete_prefix("rId").to_i
      end
    end
  end
end