require 'crossbar/version'
require 'fileutils'
require 'pathname'
require 'thor'

module Crossbar
  class Generator < Thor
    map ['-v', '--version'] => :version

    desc 'install', 'Install Crossbar into your project'
    method_options path: :string
    def install
      # crossbar_files_already_installed?
      if crossbar_files_already_installed?
        puts "Crossbar files already installed, doing nothing."
      else
        install_files
        puts "Crossbar files installed to #{install_path}"
      end
    end

    desc 'version', 'Show Crossbar version'
    def version
      say "Crossbar #{Crossbar::VERSION}"
    end

    private

    def crossbar_files_already_installed?
      crossbar_folders.all? do |f|
        return File.directory?(File.join(install_path, f))
      end
    end

    def crossbar_folders
      return ["base", "layout", "modules", "states"]
    end


    def install_path
      @install_path ||= if options[:path]
        Pathname.new(File.join(options[:path], ''))
      else
        Pathname.new '.'
      end
    end

    def install_files
      FileUtils.mkdir_p(install_path)
      FileUtils.cp_r(all_stylesheets, install_path)
    end

    def all_stylesheets
      Dir["#{stylesheets_directory}/*"]
    end

    def stylesheets_directory
      File.join(top_level_directory, "app", "assets", "stylesheets")
    end

    def top_level_directory
      File.dirname(File.dirname(File.dirname(__FILE__)))
    end
  end
end