#!/usr/bin/ruby

require 'optparse'
require 'rubygems'
require 'fileutils'

CHEF_VPC_PROJECT = "#{File.dirname(__FILE__)}" unless defined?(CHEF_VPC_PROJECT)
require 'chef-vpc-toolkit'
include ChefVPCToolkit

options = {}
opts = OptionParser.new

options[:name] = ""
opts.on("-n name", "--name", String,
	"Create a new cloud project with the given directory name.") do |name|
	options[:name] = name
end

options[:upgrade] = false
opts.on("-u", "--upgrade", "Upgrade a cloud project to work with the latest Cloud Toolkit.") do
	options[:upgrade] = true
end

opts.on_tail("-v", "--version", "Print version") do
puts "Cloud Toolkit Version: #{Version::VERSION}"
exit
end

opts.on_tail("-h", "--help", "Show help") do
puts opts
exit
end

opts.parse!(ARGV)

# simple validations
def exit_if_nil_or_empty(options, sym)
	if options[sym].nil? || options[sym].empty? then
		puts "Please specify a valid #{sym.to_s} parameter."
		puts "Run with --help for more information."
		exit 1
	end
end

if options[:upgrade]

	# Rakefile
	if not File.exists?("Rakefile") then
		puts "Unable to find Rakefile. Run the 'cloud-toolkit -u' commmand from within a cloud project directory."
		exit 1
	else
		FileUtils.cp("#{Version::CHEF_VPC_TOOLKIT_ROOT}/contrib/Rakefile", "Rakefile")
	end

	# chef_installer.yml
	if File.exists?("config/chef_installer.conf") then
		FileUtils.mv("config/chef_installer.conf", "config/chef_installer.yml")
	end

else
	exit_if_nil_or_empty(options, :name)

	if File.exists?(options[:name]) then
		puts "'#{options[:name]}' already exists."
		exit 1
	end

	["", "share"].each do |dir|
		FileUtils.mkdir_p options[:name] + File::SEPARATOR + dir
	end

	["config", "cookbook-repos"].each do |dir|
		FileUtils.cp_r(Version::CHEF_VPC_TOOLKIT_ROOT+File::SEPARATOR+dir, File.join(options[:name], dir))
	end

	FileUtils.cp("#{Version::CHEF_VPC_TOOLKIT_ROOT}/VERSION", File.join(options[:name], "config", "TOOLKIT_VERSION"))

	FileUtils.cp("#{Version::CHEF_VPC_TOOLKIT_ROOT}/contrib/rake/Rakefile", File.join(options[:name], "Rakefile"))
end