module Middleman

def findup(filename, cwd=Dir.pwd)
  cwd = Pathname(cwd)
  return cwd.to_s if (cwd + filename).exist?
  return false if cwd.root?
  findup(filename, cwd.parent)
end

def setup_bundler
  ENV['BUNDLE_GEMFILE'] ||= findup('Gemfile', ENV['MM_ROOT'])
  unless File.exist?(ENV['BUNDLE_GEMFILE'])
    ENV['BUNDLE_GEMFILE'] = File.expand_path('../../../../Gemfile', __FILE__)
  end
  if File.exist?(ENV['BUNDLE_GEMFILE'])
    require 'bundler/setup'
    Bundler.require
  else
    raise "Couldn't find your Gemfile. Middleman projects require a Gemfile for specifying dependencies."
  end
end

def setup_load_paths
  @_is_setup ||= begin
    # Only look for config.rb if MM_ROOT isn't set
    if !ENV['MM_ROOT'] && (found_path = findup('config.rb'))
      ENV['MM_ROOT'] = found_path
    end
    # If we've found the root, try to setup Bundler
    setup_bundler if ENV['MM_ROOT']
    true
  end
end