#!/usr/bin/ruby
  # Run Boxen.
  
  require "pathname"
  
  if ENV["USER"] == "root"
    abort "Run this as a normal user, I'll sudo if I need to."
  end
  
  # Make sure only one boxen process runs at a time.
  
  myself = File.new __FILE__
  
  unless myself.flock File::LOCK_EX | File::LOCK_NB
    abort "You're already running a boxen process! Know a patience."
  end
  
  # Yeah yeah, I like to be explicit.
  
  at_exit { myself.flock File::LOCK_UN }
  
  # Put us where we belong, in the root dir of our boxen repo.
  
  Dir.chdir Pathname.new(__FILE__).realpath + "../.."
  
  # Auto-update code. This is done as early as possible so that changes
  # to boxen support code or dependencies can be grabbed.
  
  unless ENV["BOXEN_NO_PULL"] || ARGV.include?("--no-pull")
    if system("which git > /dev/null") && File.directory?(".git")
      clean  = `git status --porcelain`.empty?
      master = `git symbolic-ref HEAD`.chomp == "refs/heads/master"
      no_new_commits = system('git diff --exit-code --quiet origin/master master')
  
      if clean && master && no_new_commits
        quietly = "> /dev/null 2>&1"
        fetch   = "(git fetch origin #{quietly})"
        reset   = "(git reset --hard origin/master #{quietly})"
        reclean = "(git clean -df #{quietly})"
  
        unless system "#{fetch} && #{reset} && #{reclean}"
          warn "Couldn't auto-update, continuing."
        end
      end
    end
  end
  
  # Make sure our local dependencies are up to date.
  
  strap = %w(script/bootstrap --deployment --local --without development:test)
  abort "Can't bootstrap, dependencies are outdated." unless system *strap