#!/usr/bin/env ruby

FILE_PATH = File.expand_path(File.dirname(__FILE__))
usage = <<-EOS

Usage: sl [ruby|python] <application_name>
  Creates a Silverlight application in the "application_name" directory.
EOS
require 'fileutils'

class Generator
  TEMPLATES_DIR = "#{FILE_PATH}/templates"

  def self.discover_templates
    Dir["#{TEMPLATES_DIR}/*"].collect { |d| d.split("/").last.to_sym }
  end

  def initialize(template, name)
    @name = "#{name}/"
    @template = "#{TEMPLATES_DIR}/#{template}"
    @language = template.to_s.capitalize
    generate
  end

  def generate
    if File.directory? @name
      puts "\nError: '#{@name}' already exists! Application not created."
    else
      FileUtils.mkdir @name
      FileUtils.cp_r @template + "/.", @name
      puts "\n#{@language} Silverlight application created in '#{@name}' directory."
    end
  end
end

if ARGV.size != 2
  puts usage
elsif !Generator.discover_templates.include?(ARGV.first.to_sym)
  puts "\nError: No templates found for '#{ARGV.first}'."
else
  Generator.new ARGV.first, ARGV.last
end