text: import re
  import time
  from typing import Dict, Optional, Tuple
  
  import logging
  from rich.logging import RichHandler
  
  from ciphey.iface import Config, Decoder, ParamSpec, T, U, WordList, registry
  
  
  @registry.register
  class Brainfuck(Decoder[str]):
      def decode(self, ctext: T) -> Optional[U]:
          """
          Takes a ciphertext and treats it as a Brainfuck program,
          interpreting it and saving the output as a string to return.
  
          Brainfuck is a very simple, Turing-complete esoteric language.
          Below is a simplified interpreter that attempts to check whether a
          given ciphertext is a brainfuck program that would output a string.
  
          A program that can be "decoded" like this is one that:
              * Does not require user input ("," instruction)
              * Includes at least one putchar instruction (".")
              * Does not contain anything but the main 7 instructions,
                  (excluding ",") and whitespace
  
          Details:
              * This implementation wraps the memory pointer for ">" and "<"
              * It is time-limited to 60 seconds, to prevent hangups
              * The program starts with 100 memory cells, chosen arbitrarily
          """
  
          logging.debug("Attempting brainfuck")
  
          result = ""
          memory = [0] * 100
          codeptr, memptr = 0, 0  # Instruction pointer and stack pointer
          timelimit = 60  # The timeout in seconds
  
          bracemap, isbf = self.bracemap_and_check(ctext)
  
          # If it doesn't appear to be valid brainfuck code
          if not isbf:
              logging.debug("Failed to interpret brainfuck due to invalid characters")
              return None
  
          # Get start time
          start = time.time()
  
          while codeptr < len(ctext):
  
              current = time.time()
  
              # Return none if we've been running for over a minute
              if current - start > timelimit:
                  logging.debug("Failed to interpret brainfuck due to timing out")
                  return None
  
              cmd = ctext[codeptr]
  
              if cmd == "+":
                  memory[memptr] = memory[memptr] + 1 if memory[memptr] < 255 else 0
              elif cmd == "-":
                  memory[memptr] = memory[memptr] - 1 if memory[memptr] > 0 else 255
              elif cmd == ">":
                  if memptr == len(memory) - 1:
                      memory.append(0)
                  memptr += 1
  
              elif cmd == "<":
                  if memptr == 0:
                      memptr = len(memory) - 1
                  else:
                      memptr -= 1
  
              elif cmd == "[" and memory[memptr] == 0:
                  codeptr = bracemap[codeptr]
  
              elif cmd == "]" and memory[memptr]:
                  codeptr = bracemap[codeptr]
  
              elif cmd == ".":
                  result += chr(memory[memptr])
  
              codeptr += 1
  
          logging.info(f"Brainfuck successful, returning '{result}'")
          return result
  
      def bracemap_and_check(self, program: str) -> Tuple[Optional[Dict], bool]:
          """
          Create a bracemap of brackets in the program, to compute jmps.
          Maps open -> close brackets as well as close -> open brackets.
  
          Also returns True if the program is valid Brainfuck code. If False, we
          won't even try to run it.
          """
  
          open_stack = []
          bracemap = {}
          legal_instructions = {"+", "-", ">", "<", "[", "]", "."}
          legal_count = 0
  
          # If the program actually outputs anything (contains ".")
          prints = False
  
          for idx, instruction in enumerate(program):
              # If instruction is brainfuck (without input) or whitespace, it counts
              if instruction in legal_instructions or re.match(r"\s", instruction):
                  legal_count += 1
  
              if not prints and instruction == ".":
                  # If there are no "." instructions then this program will not output anything
                  prints = True
  
              elif instruction == "[":
                  open_stack.append(idx)
  
              elif instruction == "]":
                  try:
                      opbracket = open_stack.pop()
                      bracemap[opbracket] = idx
                      bracemap[idx] = opbracket
                  except IndexError:
                      # Mismatched braces, not a valid program
                      # Closing braces > opening braces
                      return (None, False)
  
          # 1. All characters are instructions or whitespace
          # 2. There are no extra open braces
          # 3. There is at least one character to be "printed"
          # (result is >=1 in length)
          is_brainfuck = legal_count == len(program) and len(open_stack) == 0 and prints
  
          return bracemap, is_brainfuck
  
      @staticmethod
      def priority() -> float:
          # Not uncommon, but not very common either. It's also slow.
          return 0.08
  
      def __init__(self, config: Config):
          super().__init__(config)
          self.ALPHABET = config.get_resource(self._params()["dict"], WordList)
  
      @staticmethod
      def getParams() -> Optional[Dict[str, ParamSpec]]:
          return {
              "dict": ParamSpec(
                  desc="Brainfuck alphabet (default English)",
                  req=False,
                  default="cipheydists::list::englishAlphabet",
              )
          }
  
      @staticmethod
      def getTarget() -> str:
          return "brainfuck"
  