module Capucine
  class CoffeeScript
    require 'packr'
    require 'coffee-script'

    def initialize(capucine)
      @cap = capucine
    end

    def run_once(file = nil)

      unless file
        files = Dir.glob(File.join @cap.settings.working_dir, @cap.settings.conf['coffeescript_output_dir'], '*')
        FileUtils.rm_r files
        self.compile_dir @cap.settings.conf['coffeescript_files_dir'], @cap.settings.conf['coffeescript_output_dir']
      else
        self.compile_dir file, @cap.settings.conf['coffeescript_output_dir']
      end

      puts "[coffee] - Compiled"
    end

    def compile_dir(input, output)

      if File.extname(input) == '.coffee'
        coffee_files = input
      else
        coffee_files = File.join @cap.settings.working_dir, input, "**/**.coffee"
      end

      Dir.glob(coffee_files).each do |file_coffee_o|

        file_coffee = File.expand_path file_coffee_o
        base_in_dir = File.join @cap.settings.working_dir, input

        relative_path = file_coffee.gsub(File.join(@cap.settings.working_dir, @cap.settings.conf['coffeescript_files_dir'] ),'')

        relative_path = relative_path.gsub(/\.coffee$/, '.js')
        relative_path_min = relative_path.gsub(/\.js$/, '.min.js')

        file_out = File.join @cap.settings.working_dir, output, relative_path
        file_out_min = File.join @cap.settings.working_dir, output, relative_path_min

        relative_coffee_file = file_coffee.gsub(base_in_dir, '')

        opts = {:bare => @cap.settings.conf['coffeescript_bare']}
        coffee_output_min = ""

        error = false
        begin
          coffee_output = ::CoffeeScript.compile(File.read(file_coffee), opts)
        rescue Exception => e
          error = true
          message = "#{e.message}"
          coffee_output = "var message = \"CoffeeScript Error (#{relative_coffee_file.gsub(/^\//, '')}) => \";"
          coffee_output += "message += \"#{message}\";"
          coffee_output += "throw message;"
        end

        coffee_output_min << Packr.pack(coffee_output)
        FileUtils.mkdir_p File.dirname(file_out)

        puts "[coffee] - #{relative_path} => #{message}" if error

        f1 = File.open(file_out, 'w+')
        f1.write(coffee_output)
        f1.close

        f2 = File.open(file_out_min, 'w+')
        f2.write(coffee_output_min)
        f2.close
      end

    end


    def run_watch
      require 'fssm'

      files_to_lookat = File.join @cap.settings.working_dir, @cap.settings.conf['coffeescript_files_dir']
      js_generated_dir = File.join @cap.settings.working_dir, @cap.settings.conf['coffeescript_output_dir']

      coffee = @cap.coffee

      coffee_thread = Thread.new {

        FSSM.monitor(files_to_lookat, :directories => true) do
          update do |b, r|
            file = File.join b, r
            coffee.run_once file if File.extname(r) == '.coffee' # COFFEE
          end

          create do |b, r|
            file = File.join b, r
            coffee.run_once file if File.extname(r) == '.coffee' # COFFEE
          end

          delete do |b, r|

            file_name = File.expand_path File.join(b, r)
            folder_name = File.dirname file_name
            js_files = [
              File.join(js_generated_dir, r.gsub('.coffee', '.js')),
              File.join(js_generated_dir, r.gsub('.coffee', '.min.js')),
            ]

            if Dir["#{folder_name}/*"].empty? and folder_name != js_generated_dir
              # delete full dir
              to_delete = File.expand_path(File.dirname(js_files[0]))
              FileUtils.rm_r to_delete
            else
              js_files.each do |file|
                File.delete(file) if File.exist?(file)
              end
            end

          end
        end

      }

      return coffee_thread


    end

  end

end