application.rb

require_relative 'boot'

require 'rails/all'

# Require the gems listed in Gemfile, including any gems
# you've limited to :test, :development, or :production.
Bundler.require(*Rails.groups)

module ArkMonitor
  class Application < Rails::Application
    # Settings in config/environments/* take precedence over those specified here.
    # Application configuration should go into files in config/initializers
    # -- all .rb files in that directory are automatically loaded.
    config.generators do |g|
      g.test_framework :rspec,
        fixtures: true,
        view_specs: false,
        helper_specs: false,
        routing_specs: false,
        controller_specs: false,
        request_specs: false
      g.fixture_replacement :factory_girl, dir: "spec/factories"
      g.assets false
      g.helper false
    end
    # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
    # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
    config.i18n.default_locale = :en

    config.time_zone = 'Berlin'

    config.x.steam = Rails.application.config_for(:steam)
  end
end

configuration.rb

# app/models/factorio/configuration.rb
class Factorio::Configuration < ApplicationRecord
  belongs_to :server
  validates :file, presence: true

  def read
    self.content = File.read current_path
    self.update_attributes read_at: Time.now
    self
  end

  def write
    File.open current_path, "w" do |config|
      config.puts self.content
    end
    self.update_attributes wrote_at: Time.now
    self
  end

  def modified_at
    File.mtime(current_path) if File.exists? current_path
  end

  def copy from:
    FileUtils.cp version_path(version: from), current_path if File.exists? version_path(version: from)
  end
private
  def current_path
    [self.server.current_path, "data", self.file].join("/")
  end

  def version_path version:
    [self.server.version_path(version: version), "data", self.file].join("/")
  end
end

factorio.rb

# app/models/factorio.rb
module Factorio
  def self.table_name_prefix
    'factorio_'
  end
end