require 'yaml'

module Rake

  class LocalConfig

    VERSIONS = ['1.0', '1.1']

    attr_accessor :include_paths
    attr_accessor :compilation_options

    def initialize( file_name )
      @file_name           = file_name
      @include_paths       = []
      @compilation_options = []
    end

    def load
      config = YAML.load_file( @file_name )

      version             = config[:rake_builder][:config_file][:version]
      @include_paths       = config[:include_paths]
      @compilation_options = config[:compilation_options]
      if not VERSIONS.find_index(version)
        raise Rake::Builder::BuilderError.new('Config file version incorrect') 
      end
    end

    def save
      File.open( @file_name, 'w' ) do | file |
        file.write config.to_yaml
      end
    end

    def config
      { :rake_builder        => { :config_file => { :version => VERSIONS[-1] } },
        :include_paths       => @include_paths,
        :compilation_options => @compilation_options }
    end

  end

end