module Astrails
  module Safe
    class Mysqldump < Engine

      def command
        "mysqldump  --defaults-extra-file=#{password_file} #{@config[:options]} #{mysql_skip_tables} #{@id}"
      end

      protected

      def password_file
        Astrails::Safe::TmpFile.create("mysqldump") do |file|
          file.puts "[mysqldump]"
          %w/user password socket host port/.each do |k|
            v = @config[k]
            file.puts "#{k} = #{v}" if v
          end
        end
      end

      def mysql_skip_tables
        if skip_tables = @config[:skip_tables]
          [*skip_tables].map { |t| "--ignore-table=#{@id}.#{t}" } * " "
        end
      end

      def mysqldump_extra_options
        @config[:options] + " " if @config[:options]
      end

    end
  end
end