Rename comment data files eg: comment-2014-01-21013323.yml ~>comment-1390268003000.yml

rename_comments.rake

require "bundler/setup"
require "fileutils"
require "date"
require "time"

## -- Misc Configs -- ##

source_dir    = "src"    # source file directory
comments_dir  = "_data/comments/sub-folder-name"    # comment directory
comment_label = "comment-"
comment_ext   = ".yml"

desc "Convert ISO date in comment file names to UNIX timestamps"
task :rename_comments do
  Dir.chdir("#{source_dir}/#{comments_dir}") do
    Dir['*.yml'].each do |comment|
      comment_date = ""
      File.open( comment ) do |f|
        f.grep( /^date: / ) do |line|
          comment_date = Time.parse(line).to_i
          comment_date = (comment_date.to_f * 1000).round.to_s
          break
        end
      end
      new_comment_name = comment_label + comment_date + comment_ext    # determining the correct filename
      if comment !~ /comment-(\d)*.yml/    # only rename ISO datetime file names (eg. comment-2016-10-24-123456.yml)
        puts "renaming #{comment} to #{new_comment_name}"
        FileUtils.mv(comment, new_comment_name)
      end
    end
  end
end