module RubyQA
  class Resource
    attr_reader :name, :data
    REQUIREMENTS = {}

    def initialize (host)
      @host = host
      @data = Hash.new
      @gather_command = ""
    end

    def gather
      if not @gather_command.empty?
        output = @host.exec(@gather_command)
        parse(output)
      else
        raise "@gather_command was not defined on Resource[#{@name}]"
      end
    end

    def parse(output)
      raise "parse not yet implemented on Resource[#{@name}]"
    end

    ## This will allow me to iterate through all subclasses without
    ## having to manually define them elsewhere
    def self.all_resources
      ObjectSpace.each_object(Class).select{|klass| klass < self}
    end
  end


  ## Gathers the facts from the remote machine via the facter utility
  require 'json'
  class Facts < Resource
    REQUIREMENTS = {}
    def initialize (host)
      super host
      @name = 'facts'
      @gather_command = "facter -j"
    end

    def parse (output)
      @data = JSON.load(output)
    end
  end

  class DRDB < Resource
    REQUIREMENTS = {
      :cluster => true
    }

    def initialize (host)
      super host
      @name = 'facts'
      @gather_command = "sudo drbdadm"
    end

    def parse (output)
      @data = output
    end
  end


end