Diving into FileUtils: Update various dotfiles' symbolic links after changing original directory.

remake_symbolic_links.rb

require "FileUtils"

# Update various dotfiles' symbolic links following directory change.
# Experimentation involving a deep dive into the Ruby 2.6.5 API.
module RemakeSymbolicLinks
  USR = '/Users/tstewart'
  CFG1 = 'zsh/configs'
  CFG2 = 'zsh/configs/post'
  TBOT = "#{USR}/Documents/Scripts/dotfiles/thoughtbot"

  # Destorys & creates symbolic links of dotfiles for zsh configuration.
  def for_zsh_config
    target_path = "#{TBOT}/#{CFG1}"
    link_path = "#{USR}/.#{CFG1}"

    # named files to replace
    file_names = %w[editor history homebrew keybindings options prompt]
    begin
      file_names.each do |file_name|
        linked_file = "#{link_path}/#{file_name}.zsh"
        target_file = "#{target_path}/#{file_name}.zsh"
        if File.exist? linked_file
          FileUtils.remove_file linked_file
          FileUtils.ln_s target_file, linked_file, verbose: true
        else
          puts "ERROR - #{linked_file} does not exist!"
        end
      end
    rescue Errno::ENOENT => e
      puts e.message
    end
  end

  # Destorys & creates symbolic links of dotfiles for post zsh configuration.
  def for_post_zsh_config
    target_post_path = "#{TBOT}/#{CFG2}"
    link_post_path = "#{USR}/.#{CFG2}"

    # named files to replace
    post_file_names = %w[completion path]
    begin
      post_file_names.each do |post_file_name|
        link_posted_file = "#{link_post_path}/#{post_file_name}.zsh"
        target_post_file = "#{target_post_path}/#{post_file_name}.zsh"
        if File.exist? link_posted_file
          FileUtils.remove_file link_posted_file
          FileUtils.ln_s target_post_file, link_posted_file, verbose: true
        else
          puts "ERROR - #{link_posted_file} does not exist!"
        end
      end
    rescue Errno::ENOENT => e
      puts e.message
    end
  end
end

# Helper
class Symbolic
  include RemakeSymbolicLinks
end

symbolic = Symbolic.new
symbolic.for_zsh_config
symbolic.for_post_zsh_config