





import json
import os
from pathlib import Path
from shutil import copyfile
from typing import Any, Dict, List, Optional, Tuple, Union

import sentencepiece

from ...tokenization_utils import PreTrainedTokenizer
from ...utils import logging


_lowerCamelCase      							=   logging.get_logger(__name__)

_lowerCamelCase      							=   '▁'

_lowerCamelCase      							=   {
    'vocab_file': 'vocab.json',
    'spm_file': 'sentencepiece.bpe.model',
}

_lowerCamelCase      							=   {
    'vocab_file': {
        'facebook/s2t-small-librispeech-asr': (
            'https://huggingface.co/facebook/s2t-small-librispeech-asr/resolve/main/vocab.json'
        ),
    },
    'spm_file': {
        'facebook/s2t-small-librispeech-asr': (
            'https://huggingface.co/facebook/s2t-small-librispeech-asr/resolve/main/sentencepiece.bpe.model'
        )
    },
}

_lowerCamelCase      							=   {
    'facebook/s2t-small-librispeech-asr': 1024,
}

_lowerCamelCase      							=   ['pt', 'fr', 'ru', 'nl', 'ro', 'it', 'es', 'de']

_lowerCamelCase      							=   {'mustc': MUSTC_LANGS}







class       __A							(   lowerCamelCase__	):




      """simple docstring"""







      UpperCAmelCase__							=   VOCAB_FILES_NAMES
      UpperCAmelCase__							=   PRETRAINED_VOCAB_FILES_MAP
      UpperCAmelCase__							=   MAX_MODEL_INPUT_SIZES
      UpperCAmelCase__							=   ["""input_ids""", """attention_mask"""]

      UpperCAmelCase__							=   []


      def __init__(		self   ,				a__   ,				a__   ,				a__="<s>"   ,				a__="</s>"   ,				a__="<pad>"   ,				a__="<unk>"   ,				a__=False   ,				a__=False   ,				a__=None   ,				a__=None   ,				a__ = None   ,				**a__   ,				):



             """simple docstring"""





             _lowerCamelCase				:  str						=		{} if sp_model_kwargs is None else sp_model_kwargs

             super().__init__(
                 bos_token=a__   ,				eos_token=a__   ,				unk_token=a__   ,				pad_token=a__   ,				do_upper_case=a__   ,				do_lower_case=a__   ,				tgt_lang=a__   ,				lang_codes=a__   ,				sp_model_kwargs=self.sp_model_kwargs   ,				**a__   ,				)
             _lowerCamelCase				:  Optional[int]						=		do_upper_case
             _lowerCamelCase				:  Optional[Any]						=		do_lower_case

             _lowerCamelCase				:  Tuple						=		load_json(a__)
             _lowerCamelCase				:  Union[str, Any]						=		{v: k for k, v in self.encoder.items()}
             _lowerCamelCase				:  Tuple						=		spm_file
             _lowerCamelCase				:  Any						=		load_spm(a__   ,				self.sp_model_kwargs)

             if lang_codes is not None:
                    _lowerCamelCase				:  List[Any]						=		lang_codes
                    _lowerCamelCase				:  List[str]						=		LANGUAGES[lang_codes]
                    _lowerCamelCase				:  Any						=		[F"""<lang:{lang}>""" for lang in self.langs]
                    _lowerCamelCase				:  Optional[Any]						=		{lang: self.sp_model.PieceToId(F"""<lang:{lang}>""") for lang in self.langs}

                    _lowerCamelCase				:  List[str]						=		self.lang_tokens
                    _lowerCamelCase				:  str						=		tgt_lang if tgt_lang is not None else self.langs[0]

                    self.set_tgt_lang_special_tokens(self._tgt_lang)
             else:
                    _lowerCamelCase				:  Any						=		{}


      @property
      def 					__snake_case      (		self):



             """simple docstring"""





             return len(self.encoder)


      @property
      def 					__snake_case      (		self):



             """simple docstring"""





             return self._tgt_lang


      @tgt_lang.setter
      def 					__snake_case      (		self   ,				a__):



             """simple docstring"""





             _lowerCamelCase				:  Any						=		new_tgt_lang
             self.set_tgt_lang_special_tokens(a__)


      def 					__snake_case      (		self   ,				a__):



             """simple docstring"""





             _lowerCamelCase				:  Optional[Any]						=		self.lang_code_to_id[tgt_lang]
             _lowerCamelCase				:  Any						=		[lang_code_id]


      def 					__snake_case      (		self   ,				a__):



             """simple docstring"""





             return self.sp_model.encode(a__   ,				out_type=a__)


      def 					__snake_case      (		self   ,				a__):



             """simple docstring"""





             return self.encoder.get(a__   ,				self.encoder[self.unk_token])


      def 					__snake_case      (		self   ,				a__):



             """simple docstring"""





             return self.decoder.get(a__   ,				self.unk_token)


      def 					__snake_case      (		self   ,				a__):



             """simple docstring"""





             _lowerCamelCase				:  Union[str, Any]						=		[]
             _lowerCamelCase				:  List[str]						=		''''''
             for token in tokens:
                    # make sure that special tokens are not decoded using sentencepiece model
                    if token in self.all_special_tokens:
                           _lowerCamelCase				:  List[Any]						=		self.sp_model.decode(a__)
                           out_string += (decoded.upper() if self.do_upper_case else decoded) + token + " "
                           _lowerCamelCase				:  Optional[int]						=		[]
                    else:
                           current_sub_tokens.append(a__)
             _lowerCamelCase				:  Tuple						=		self.sp_model.decode(a__)
             out_string += decoded.upper() if self.do_upper_case else decoded
             return out_string.strip()


      def 					__snake_case      (		self   ,				a__   ,				a__=None):



             """simple docstring"""





             if token_ids_a is None:
                    return self.prefix_tokens + token_ids_a + [self.eos_token_id]
             # We don't expect to process pairs, but leave the pair logic for API consistency
             return self.prefix_tokens + token_ids_a + token_ids_a + [self.eos_token_id]


      def 					__snake_case      (		self   ,				a__   ,				a__ = None   ,				a__ = False):



             """simple docstring"""





             if already_has_special_tokens:
                    return super().get_special_tokens_mask(
                        token_ids_a=a__   ,				token_ids_a=a__   ,				already_has_special_tokens=a__)

             _lowerCamelCase				:  Tuple						=		[1] * len(self.prefix_tokens)
             _lowerCamelCase				:  Tuple						=		[1]
             if token_ids_a is None:
                    return prefix_ones + ([0] * len(a__)) + suffix_ones
             return prefix_ones + ([0] * len(a__)) + ([0] * len(a__)) + suffix_ones


      def 					__snake_case      (		self):



             """simple docstring"""





             _lowerCamelCase				:  Union[str, Any]						=		self.encoder.copy()
             vocab.update(self.added_tokens_encoder)
             return vocab


      def __getstate__(		self):



             """simple docstring"""





             _lowerCamelCase				:  Union[str, Any]						=		self.__dict__.copy()
             _lowerCamelCase				:  str						=		None
             return state


      def __setstate__(		self   ,				a__):



             """simple docstring"""





             _lowerCamelCase				:  Optional[int]						=		d

             # for backward compatibility
             if not hasattr(self   ,				'''sp_model_kwargs'''):
                    _lowerCamelCase				:  List[Any]						=		{}

             _lowerCamelCase				:  Dict						=		load_spm(self.spm_file   ,				self.sp_model_kwargs)



      def 					__snake_case      (		self   ,				a__   ,				a__ = None):



             """simple docstring"""





             _lowerCamelCase				:  str						=		Path(a__)
             assert save_dir.is_dir(), F"""{save_directory} should be a directory"""
             _lowerCamelCase				:  Any						=		save_dir / (
                 (filename_prefix + '''-''' if filename_prefix else '''''') + self.vocab_files_names['''vocab_file''']
             )
             _lowerCamelCase				:  Optional[Any]						=		save_dir / (
                 (filename_prefix + '''-''' if filename_prefix else '''''') + self.vocab_files_names['''spm_file''']
             )

             save_json(self.encoder   ,				a__)

             if os.path.abspath(self.spm_file) != os.path.abspath(a__) and os.path.isfile(self.spm_file):
                    copyfile(self.spm_file   ,				a__)
             elif not os.path.isfile(self.spm_file):
                    with open(a__   ,				'''wb''') as fi:
                           _lowerCamelCase				:  List[str]						=		self.sp_model.serialized_model_proto()
                           fi.write(a__)

             return (str(a__), str(a__))




def  __UpperCAmelCase(   lowercase_			,     lowercase_   ):
       _lowerCamelCase				:  Optional[Any]						=		sentencepiece.SentencePieceProcessor(**lowercase_   )
       spm.Load(str(lowercase_   )   )
       return spm




def  __UpperCAmelCase(   lowercase_   ):
       with open(lowercase_			,     '''r'''   ) as f:
              return json.load(lowercase_   )




def  __UpperCAmelCase(   lowercase_			,     lowercase_   ):
       with open(lowercase_			,     '''w'''   ) as f:
              json.dump(lowercase_			,     lowercase_			,     indent=2   )








from __future__ import annotations




def  __UpperCAmelCase(   lowercase_			,     lowercase_ = None			,     lowercase_ = None			,     lowercase_ = False			,     ):
       _lowerCamelCase				:  Tuple						=		cipher_alphabet or [chr(lowercase_   ) for i in range(97			,     1_23   )]

       # If the argument is None or the user provided an empty dictionary
       if not frequencies_dict:
              # Frequencies of letters in the english language (how much they show up)
              _lowerCamelCase				:  Dict						=		{
                  '''a''': 0.0_8_4_9_7,
                  '''b''': 0.0_1_4_9_2,
                  '''c''': 0.0_2_2_0_2,
                  '''d''': 0.0_4_2_5_3,
                  '''e''': 0.1_1_1_6_2,
                  '''f''': 0.0_2_2_2_8,
                  '''g''': 0.0_2_0_1_5,
                  '''h''': 0.0_6_0_9_4,
                  '''i''': 0.0_7_5_4_6,
                  '''j''': 0.0_0_1_5_3,
                  '''k''': 0.0_1_2_9_2,
                  '''l''': 0.0_4_0_2_5,
                  '''m''': 0.0_2_4_0_6,
                  '''n''': 0.0_6_7_4_9,
                  '''o''': 0.0_7_5_0_7,
                  '''p''': 0.0_1_9_2_9,
                  '''q''': 0.0_0_0_9_5,
                  '''r''': 0.0_7_5_8_7,
                  '''s''': 0.0_6_3_2_7,
                  '''t''': 0.0_9_3_5_6,
                  '''u''': 0.0_2_7_5_8,
                  '''v''': 0.0_0_9_7_8,
                  '''w''': 0.0_2_5_6_0,
                  '''x''': 0.0_0_1_5_0,
                  '''y''': 0.0_1_9_9_4,
                  '''z''': 0.0_0_0_7_7,
              }
       else:
              # Custom frequencies dictionary
              _lowerCamelCase				:  Tuple						=		frequencies_dict

       if not case_sensitive:
              _lowerCamelCase				:  Optional[int]						=		ciphertext.lower()

       # Chi squared statistic values
       _lowerCamelCase				:  dict[int, tuple[float, str]]						=		{}

       # cycle through all of the shifts
       for shift in range(len(lowercase_   )   ):
              _lowerCamelCase				:  Any						=		''''''

              # decrypt the message with the shift
              for letter in ciphertext:
                     try:
                            # Try to index the letter in the alphabet
                            _lowerCamelCase				:  int						=		(alphabet_letters.index(letter.lower()   ) - shift) % len(
                                lowercase_   )
                            decrypted_with_shift += (
                                alphabet_letters[new_key].upper()
                                if case_sensitive and letter.isupper()
                                else alphabet_letters[new_key]
                            )
                     except ValueError:
                            # Append the character if it isn't in the alphabet
                            decrypted_with_shift += letter

              _lowerCamelCase				:  Optional[Any]						=		0.0

              # Loop through each letter in the decoded message with the shift
              for letter in decrypted_with_shift:
                     if case_sensitive:
                            _lowerCamelCase				:  Any						=		letter.lower()
                            if letter in frequencies:
                                   # Get the amount of times the letter occurs in the message
                                   _lowerCamelCase				:  List[str]						=		decrypted_with_shift.lower().count(lowercase_   )

                                   # Get the excepcted amount of times the letter should appear based
                                   # on letter frequencies
                                   _lowerCamelCase				:  Optional[Any]						=		frequencies[letter] * occurrences

                                   # Complete the chi squared statistic formula
                                   _lowerCamelCase				:  int						=		((occurrences - expected) ** 2) / expected

                                   # Add the margin of error to the total chi squared statistic
                                   chi_squared_statistic += chi_letter_value
                     else:
                            if letter.lower() in frequencies:
                                   # Get the amount of times the letter occurs in the message
                                   _lowerCamelCase				:  Union[str, Any]						=		decrypted_with_shift.count(lowercase_   )

                                   # Get the excepcted amount of times the letter should appear based
                                   # on letter frequencies
                                   _lowerCamelCase				:  List[str]						=		frequencies[letter] * occurrences

                                   # Complete the chi squared statistic formula
                                   _lowerCamelCase				:  str						=		((occurrences - expected) ** 2) / expected

                                   # Add the margin of error to the total chi squared statistic
                                   chi_squared_statistic += chi_letter_value

        # Add the data to the chi_squared_statistic_values dictionary
              _lowerCamelCase				:  Tuple						=		(
                  chi_squared_statistic,
                  decrypted_with_shift,
              )

       # Get the most likely cipher by finding the cipher with the smallest chi squared
       # statistic
       def chi_squared_statistic_values_sorting_key(lowercase_   ) -> tuple[float, str]:
              return chi_squared_statistic_values[key]

       _lowerCamelCase				:  int						=		min(
           lowercase_			,     key=lowercase_			,     )

       # Get all the data from the most likely cipher (key, decoded message)
       (
           (
           _lowerCamelCase
       ),	(
           _lowerCamelCase
       ),	
       )				:  Optional[int]						=		chi_squared_statistic_values[most_likely_cipher]

       # Return the data on the most likely shift
       return (
           most_likely_cipher,
           most_likely_cipher_chi_squared_value,
           decoded_most_likely_cipher,
       )

