#!/usr/bin/env ruby
require 'fileutils'

$:.unshift File.expand_path('../../lib', __FILE__)
require 'rear'

usage = <<USAGE

rear usage:

  rear i[nstall]:t[emplates] [path]
    install templates at path, if path omitted, files will be installed in current folder

  rear i[nstall]:a[ssets] [path]
    install assets at path. if path omitted, files will be installed in current folder

USAGE

if $*.empty?
  puts usage
  exit 0
end

error = nil
action, unit = $*[0].scan(/(\w+)\:(\w+)/).flatten
%w[i install].include?(action) || error = 'Unrecognized action %s' % action.inspect
%w[t templates a assets].include?(unit) || error = 'Unrecognized unit %s' % unit.inspect

if error
  puts "\n  ERROR: %s" % error
  puts usage
  exit 1
end

case
when action =~ /\Ai/
  path = $*[1] || './'
  unless File.directory?(path)
    puts "\n  ERROR: %s should be a directory, exiting\n\n" % path.inspect
    exit 1
  end

  case
  when unit =~ /\At/
    path = File.join(path, 'rear/shared-templates/')
    if File.exists?(path)
      puts "\n  ERROR: %s already exists, exiting\n\n" % path
      exit 1
    end
    FileUtils.mkdir_p File.dirname(path)
    FileUtils.cp_r(RearConstants::PATH__TEMPLATES, path)
    puts "\n  templates successfully installed into %s\n\n" % path
  
  when unit =~ /\Aa/
    path = File.join(path, 'rear-assets/')
    if File.exists?(path)
      puts "\n  ERROR: %s already exists, exiting\n\n" % path
      exit 1
    end
    FileUtils.mkdir_p File.dirname(path)
    FileUtils.cp_r(RearConstants::ASSETS__PATH, path)
    puts "\n  assets successfully installed into %s\n\n" % path
  end

end