Compare two

compare_docx.rb

# frozen_string_literal: true

require 'docx'

module Docx
  # docs
  class Differences
    class << self
      # @param file_paths [Array<String>] ARGV with absolute files pathes
      # @return [Array<Hash>]
      def call(file_paths)
        find_different_paragraphs(*extract_files_paragraphs_data(file_paths))
      end

      private

      # @param main_paragraphs [Aray<Docx::Elements::Containers::Paragraph>]
      # @param comparison_paragraphs [Array<Docx::Elements::Containers::Paragraph>]
      # @return [Array<Hash>]
      def find_different_paragraphs(main_paragraphs, comparison_paragraphs)
        different_paragraps = []
        main_paragraphs.each_with_index do |paragraph, index|
          comparison_paragraph = comparison_paragraphs.at(index)

          if paragraph.text != comparison_paragraph.text
            different_paragraps << collect_differect_paragraphs_data(paragraph, comparison_paragraph)
          end
        end
        different_paragraps
      end

      # @param file_paths [Array<String>]
      # @return [Array<Docx::Document>]
      def extract_files_paragraphs_data(file_paths)
        file_paths.map! { |file_path| Docx::Document.open(file_path).paragraphs }
      end

      # @param paragraph [Docx::Elements::Containers::Paragraph]
      # @param comparison_paragraph [Docx::Elements::Containers::Paragraph]
      # @return [Hash]
      def collect_differect_paragraphs_data(paragraph, comparison_paragraph)
        { current: paragraph.text, previous: comparison_paragraph.text }
      end
    end
  end

  # docs
  class Interface
    class << self
      # @param file_paths [Array<Hash>]
      def render(results)
        return puts '~~ Nothing was changed ~~' if results.empty?

        puts 'You could find the differences between text in below paragraphs:'

        results.each.with_index(1) do |result, index|
          puts <<~TEXT
            *********************************************************************************************
            #{index})
              Current text:
                #{result[:current]}

              Previous text:
                #{result[:previous]}
          TEXT
        end
      end
    end
  end
end`

Docx::Differences
  .call([ARGV[0], ARGV[1]])
  .then { Docx::Interface.render(_1) }

=begin
How to run:

$ ruby compare_docx.rb '/home/user/folder/target_file_name.docx' '/home/user/folder/comparison_file_name.docx'

You have to set the `rb` file and then pass the target file with the file to compare in the following ARGV's (arguments).
=end