require 'tmpdir'
require 'zip/zip'

require_relative '../feature/base'
require_relative '../feature/common/merge_file'
require_relative '../feature/common/merge_dir'

module IronWorkerNG
  module Code
    class Base
      attr_reader :name
      attr_reader :features

      @@registered_types = []
    
      def self.registered_types
        @@registered_types
      end
    
      def self.register_type(type)
        @@registered_types << type
      end

      @@registered_features = []
    
      def self.registered_features
        @@registered_features
      end
    
      def self.register_feature(feature)
        @@registered_features << feature
      end

      include IronWorkerNG::Feature::Common::MergeFile::InstanceMethods
      include IronWorkerNG::Feature::Common::MergeDir::InstanceMethods

      def initialize(name = nil, options = {})
        @name = name
        @features = []
      end

      def fixate
        IronWorkerNG::Code::Base.registered_features.each do |rf|
          if rf[:for_klass] == self.class && respond_to?(rf[:name] + '_fixate')
            send(rf[:name] + '_fixate')
          end
        end
      end

      def hash_string
        fixate

        Digest::MD5.hexdigest(@features.map { |f| f.hash_string }.join)
      end

      def bundle(zip)
        @features.each do |feature|
          feature.bundle(zip)
        end
      end

      def create_zip
        fixate

        init_code = ''

        @features.each do |f|
          if f.respond_to?(:code_for_init)
            init_code += f.send(:code_for_init) + "\n"
          end
        end

        zip_name = Dir.tmpdir + '/' + Dir::Tmpname.make_tmpname("iron-worker-ng-", "code.zip")

        IronWorkerNG::Logger.debug "Creating code zip '#{zip_name}'"

        Zip::ZipFile.open(zip_name, Zip::ZipFile::CREATE) do |zip|
          bundle(zip)
          create_runner(zip, init_code)
        end

        zip_name
      end

      def create_runner(zip)
      end

      def runtime
        nil
      end

      def runner
        nil
      end
    end
  end
end