# Reads and writes to ALICE (ProgramD).
# (Put this file in the ProgramD/bin directory.)

class ALICE

  def initialize
    @alice = IO.popen("simple-console.bat", "r+") # windows
    #@alice = IO.popen("simple-console.sh", "r+") # linux
    while line = @alice.gets
      puts "#{line}"
      # look for the end of the line that immediately precedes the first prompt 
      if line =~ /help\.$/ then break end
    end
  end

  def putstr(s = '')
    s.strip!
    @alice.puts(s.to_s)
    getstr
  end

  def getResponse(s = '')
    return putstr(s)
  end

  def getstr
    line = @alice.gets # Get rid of the INFO line.
    full_response = ""
    while (line = @alice.gets) =~ /^YourBot\> /
      if line =~ /YourBot\> (.*)/ then line = $1 else next end
      full_response << line.chomp << " "
      c = @alice.getc # Check the first character of the next line
      if c.chr == "[" then break end # If it's the first chr of a prompt, break
      @alice.ungetc(c) # If it's not a prompt, push the chr back on the stream.
    end
    return full_response
  end

end

if $0 == __FILE__
  alice = ALICE.new
  print "\n> "; $stdout.flush
  quitwords = [":q", "quit", "bye", "exit"]
  while (line = gets) !~ /^(#{quitwords.join('|')})+/ and line !~ /^$/
    puts alice.putstr(line.to_s)
    print "\n> "; $stdout.flush
  end
  alice.putstr("/exit")
  print "Bye!"
end