require 'socket'
require './http.rb'
require 'time'

class FakeTunnelConnector
  attr_accessor :port, :server
  def initialize(port)
    @port = port
    @server = TCPServer.open(port)
  end

  def listen_and_respond
    tcp_socket = server.accept
    read_socket(tcp_socket)
    write_response(tcp_socket)
    tcp_socket.close
  end

  def read_socket(tcp_socket)
    headers = [] 
    puts "Request Incoming:"
    puts "-------------------"
    # read lines from socket
    while (line = tcp_socket.gets) && (line.chomp.length > 0)
      # check for a valid http verb sent
      puts parse_http_start_request_line(line) if Http::METHODS.include?(line.split.first)
      header_line = parse_http_header_request_line(line)
      headers << header_line unless header_line.nil?
    end
    puts "Request Headers:"
    puts "-------------------"
    puts headers
    puts "\r\n"
  end

  def parse_http_start_request_line(line)
    split_request = line.split
    verb = split_request.first
    location = split_request.select { |l| l if l.start_with?('/') }.first
    protocol = split_request.last
    {
      verb: verb,
      location: location,
      protocol: protocol
    }
  end

  def parse_http_header_request_line(line)
    if line.split.first.end_with?(':')
      split_request = line.split(':')
      key = split_request[0]
      value = if split_request.count >= 3
                split_request[1] + ':' + split_request[2]
              else
                split_request[1]
              end
      Hash[key, value]
    end
  end

  def write_response(tcp_socket)
    tcp_socket.sendmsg(ok)
  end

  def ok
    "HTTP/1.1 200 OK\r\nDate: #{Time.now.utc}\r\n\r\nSuccess!\r\n"
  end
end