#!/usr/bin/ruby

require 'net/http'
require 'socket'

PORT = 8081
HTTP_GET = "GET"
HTTP_POST = "POST"
HTTP_QUERY = "QUERY"
QDIR = ARGV[0]

class Request
	attr_reader :method
	attr_reader :data
	attr_reader :uri
	attr_reader :version
	attr_reader :headers

	def parse_request(str)
		@method = @data[0].split(" ")[0]
		@uri = @data[0].split(" ")[1]
		@version = @data[0].split(" ")[2]

		@headers = @data.map.drop(1) { |header|
			{header.split(": ")[0] => header.split(": ")[1]}
		 }
	end

	def initialize(cli)
		@data = [cli.gets]
		parse_request(@data)
	end
end

TCPServer.open("127.0.0.1", PORT) { |srv|
	mutex = Mutex.new
	loop do
	Thread.start(srv.accept) { |cli|
		mutex.synchronize do
			h = Request.new(cli)
			case h.method
			when HTTP_QUERY
				cli.write Dir.children(QDIR).join("\n")
			else
				cli.write("unknown method: #{h.method}")
			end
		

			cli.close
		end
	}

	end
}