

from pathlib import PurePosixPath
from typing import Optional

import fsspec
from fsspec import AbstractFileSystem
from huggingface_hub.hf_api import DatasetInfo

from ..utils.file_utils import get_authentication_headers_for_url
from ..utils.hub import hf_hub_url



class   lowercase_   (  snake_case_					):
      UpperCamelCase_      :		int										=    ""
      UpperCamelCase_      :		int										=    "hf-legacy"  # "hf://"" is reserved for hffs



      def __init__(      self				:    str      , A__				:    Optional[DatasetInfo] = None      , A__				:    Optional[str] = None      , **A__				:    Optional[Any]      , )   ->					Tuple:
        super().__init__(self      , **_A		)
        _snake_case						=							repo_info
        _snake_case						=							token
        _snake_case						=							None



      def 						UpperCamelCase_		(      self				:    List[str]		)   ->					List[str]:


        if self.dir_cache is None:
          _snake_case						=							{}
          for hf_file in self.repo_info.siblings:
            # TODO(QL): add sizes
            _snake_case						=							{
                'name': hf_file.rfilename,
                'size': None,
                'type': 'file',
            }
            self.dir_cache.update(
                {
                    str(_A		): {'''name''': str(_A		), '''size''': None, '''type''': '''directory'''}
                    for d in list(PurePosixPath(hf_file.rfilename		).parents		)[:-1]
                }		)



      def 						UpperCamelCase_		(      self				:    Union[str, Any]      , A__				:    str      , A__				:    str = "rb"      , **A__				:    Tuple      , )   ->					Dict:


        if not isinstance(self.repo_info      , _A		):
          raise NotImplementedError(f"""Open is only implemented for dataset repositories, but got {self.repo_info}"""		)
        _snake_case						=							hf_hub_url(self.repo_info.id      , _A      , revision=self.repo_info.sha		)
        return fsspec.open(
            _A      , mode=_A      , headers=get_authentication_headers_for_url(_A      , use_auth_token=self.token		)      , client_kwargs={'''trust_env''': True}      , ).open()



      def 						UpperCamelCase_		(      self				:    int      , A__				:    Tuple      , **A__				:    str		)   ->					List[str]:
        self._get_dirs()
        _snake_case						=							self._strip_protocol(_A		)
        if path in self.dir_cache:
          return self.dir_cache[path]
        else:
          raise FileNotFoundError(_A		)







      def 						UpperCamelCase_		(      self				:    Dict      , A__				:    List[str]      , A__				:    Union[str, Any]=False      , **A__				:    Any		)   ->					Tuple:
        self._get_dirs()
        _snake_case						=							PurePosixPath(path.strip('''/'''		)		)
        _snake_case						=							{}
        for p, f in self.dir_cache.items():
          _snake_case						=							PurePosixPath(p.strip('''/'''		)		)
          _snake_case						=							p.parent
          if root == path:
            _snake_case						=							f
        _snake_case						=							list(paths.values()		)
        if detail:
          return out
        else:
          return sorted(f['''name'''] for f in out		)




__A      		=     '''ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'''



def 				snake_case_(_UpperCamelCase					)							->     bytes:



  """simple docstring"""






  if not isinstance(_UpperCamelCase			,	_UpperCamelCase					):
    _snake_case						=							F"""a bytes-like object is required, not '{data.__class__.__name__}'"""
    raise TypeError(_UpperCamelCase					)

  _snake_case						=							''''''.join(bin(_UpperCamelCase					)[2:].zfill(8					) for byte in data					)

  _snake_case						=							len(_UpperCamelCase					) % 6 != 0

  if padding_needed:
    # The padding that will be added later
    _snake_case						=							b'''=''' * ((6 - len(_UpperCamelCase					) % 6) // 2)

    # Append binary_stream with arbitrary binary digits (0's by default) to make its
    # length a multiple of 6.
    binary_stream += "0" * (6 - len(_UpperCamelCase					) % 6)
  else:
    _snake_case						=							b''''''

  # Encode every 6 binary digits to their corresponding Base64 character
  return (
      "".join(
          B64_CHARSET[int(binary_stream[index : index + 6]			,	2					)]
          for index in range(0			,	len(_UpperCamelCase					)			,	6					)					).encode()
      + padding
  )



def 				snake_case_(_UpperCamelCase					)							->     bytes:



  """simple docstring"""






  if not isinstance(_UpperCamelCase			,	_UpperCamelCase					) and not isinstance(_UpperCamelCase			,	_UpperCamelCase					):
    _snake_case						=							(
        '''argument should be a bytes-like object or ASCII string, '''
        F"""not '{encoded_data.__class__.__name__}'"""
    )
    raise TypeError(_UpperCamelCase					)

  # In case encoded_data is a bytes-like object, make sure it contains only
  # ASCII characters so we convert it to a string object
  if isinstance(_UpperCamelCase			,	_UpperCamelCase					):
    try:
      _snake_case						=							encoded_data.decode('''utf-8'''					)
    except UnicodeDecodeError:
      raise ValueError('''base64 encoded data should only contain ASCII characters'''					)

  _snake_case						=							encoded_data.count('''='''					)

  # Check if the encoded string contains non base64 characters
  if padding:
    assert all(
        char in B64_CHARSET for char in encoded_data[:-padding]					), "Invalid base64 character(s) found."
  else:
    assert all(
        char in B64_CHARSET for char in encoded_data					), "Invalid base64 character(s) found."

  # Check the padding
  assert len(_UpperCamelCase					) % 4 == 0 and padding < 3, "Incorrect padding"

  if padding:
    # Remove padding if there is one
    _snake_case						=							encoded_data[:-padding]

    _snake_case						=							''''''.join(
        bin(B64_CHARSET.index(_UpperCamelCase					)					)[2:].zfill(6					) for char in encoded_data					)[: -padding * 2]
  else:
    _snake_case						=							''''''.join(
        bin(B64_CHARSET.index(_UpperCamelCase					)					)[2:].zfill(6					) for char in encoded_data					)

  _snake_case						=							[
      int(binary_stream[index : index + 8]			,	2					)
      for index in range(0			,	len(_UpperCamelCase					)			,	8					)
  ]

  return bytes(_UpperCamelCase					)


if __name__ == "__main__":
 import doctest

 doctest.testmod()

