#!/usr/bin/env ruby

# Outputs the Choices and Translations lines for openproject/default_language
# select option in packager installation.
#
# The template is located at packaging/addons/openproject/templates

require "pathname"
require "yaml"

class App
  class << self
    def rails_root
      @rails_root ||=
        Pathname.new(__dir__)
          .ascend
          .find { |dir| dir.join("Gemfile").exist? }
          .tap { |dir| raise "Unable to find Rails root directory (looking up from #{__dir__})" if dir.nil? }
    end
  end
end

class PrintPackagerLanguagesChoices
  class << self
    def call
      languages_codes, languages_names = languages_codes_and_names
      puts "Choices: #{languages_codes.join(', ')}"
      puts "Translations: #{languages_names.join(', ')}"
      puts
      puts "Now update packaging/addons/openproject/templates with these two lines"
    end

    def languages_codes_and_names
      translations_files
        .flat_map { |f| language_code_and_name_from(f) }
        .sort
        .transpose
    end

    def translations_files
      App.rails_root.glob("config/locales/generated/*.yml")
    end

    def language_code_and_name_from(translation_file)
      YAML.load_file(translation_file.to_s)
        .map { |(lang, data)| [lang, data.dig("cldr", "language_name")] }
    end
  end
end

PrintPackagerLanguagesChoices.call