letsdo.thor

# My first Thor script is a helper to the productivity strategy of having an 
# specific /etc/hosts file that blocks Twitter, Facebook, porn sites, and other 
# unwanted distractions, during certains time of the day.

# Copy of your regular hosts file to /etc/hosts.play 
# Create a /etc/hosts.work file with all the blocked sites on it
# Use 'thor lets:do [work|play]' to switch to the desired mental context.

# 'work' and 'play' are orientative, use whichever keywords suit you best. 
# Nothing keeps you from keeping n different 'contexts' around.
# Set the DNSFlush_cmd constant to the command used in your OS for that purpose.

class Lets < Thor
  require 'fileutils'

  Base = '/etc/hosts'
  Prev = Base+'.prev'
  DNSflush_cmd = 'dscacheutil -flushcache'

  desc 'env', 'what are you all about right now'
  
  def do(env)
   file = [Base,env].join('.') 
   raise NoEnv unless File.exists?(file)
   FileUtils.copy_file(Base,Prev)
   FileUtils.copy_file(file,Base)
   system(DNSflush_cmd)
   puts "You got it. Let's #{env}."
  end

end

class NoEnv < StandardError;end