require "rack"
require "rack/utils"
module Rackbal

  class HostPool
	include Singleton
	attr_accessor :host_pool
	class Host
	  attr_accessor :host, :port, :priority, :request_count, :in_use
	  def initialize(host,port,priority = 0,request_count = 0)
		@host = host
		@port = port
		@priority = priority
		@request_count = request_count
		@in_use = false
	  end
	  def is_host(in_host,in_port)
		return (@host == in_host && @port == in_port)
	  end
	end

	def add_host(host,port,priority = 0)
	end

	def remove_host(host_address,host_port)
	  @host_pool.reject!{|host| host.is_host(host_address,host_port)} if @host_pool
	end

	def next_host

	end

  end

  # http://rack.rubyforge.org/doc/classes/Rack/Forwarder.html
  # Forward class ripped form html above. I can not locate /lib/rack/fowarder.rb
  # anywhere!
  class Forward
	attr_accessor :host,:port
	def initialize(host, port=80)
       @host, @port = host, port
    end
	def call(rackreq,headers)

      res = Net::HTTP.start(@host, @port) { |http|
         m = rackreq.request_method
         case m
         when "GET", "HEAD", "DELETE", "OPTIONS", "TRACE"
          req = Net::HTTP.const_get(m.capitalize).new(rackreq.fullpath, headers)
         when "PUT", "POST"
           req = Net::HTTP.const_get(m.capitalize).new(rackreq.fullpath, headers)
           req.body_stream = rackreq.body
         else
           raise "method not supported: #{method}"
         end

         http.request(req)
       }

       [res.code, Rack::Utils::HeaderHash.new(res.to_hash), [res.body]]
     end
  end
  module Dispatch
	def Dispatch.run(request)
	end
  end
end