



import os

from bleurt import score  # From: git+https://github.com/google-research/bleurt.git

import datasets


lowerCamelCase__			= datasets.logging.get_logger(__name__)


lowerCamelCase__			= """\
@inproceedings{bleurt,
  title={BLEURT: Learning Robust Metrics for Text Generation},
  author={Thibault Sellam and Dipanjan Das and Ankur P. Parikh},
  booktitle={ACL},
  year={2020},
  url={https://arxiv.org/abs/2004.04696}
}
"""

lowerCamelCase__			= """\
BLEURT a learnt evaluation metric for Natural Language Generation. It is built using multiple phases of transfer learning starting from a pretrained BERT model (Devlin et al. 2018)
and then employing another pre-training phrase using synthetic data. Finally it is trained on WMT human annotations. You may run BLEURT out-of-the-box or fine-tune
it for your specific application (the latter is expected to perform better).

See the project's README at https://github.com/google-research/bleurt#readme for more information.
"""

lowerCamelCase__			= """
BLEURT score.

Args:
    `predictions` (list of str): prediction/candidate sentences
    `references` (list of str): reference sentences
    `checkpoint` BLEURT checkpoint. Will default to BLEURT-tiny if None.

Returns:
    'scores': List of scores.
Examples:

    >>> predictions = [\"hello there\", \"general kenobi\"]
    >>> references = [\"hello there\", \"general kenobi\"]
    >>> bleurt = datasets.load_metric(\"bleurt\")
    >>> results = bleurt.compute(predictions=predictions, references=references)
    >>> print([round(v, 2) for v in results[\"scores\"]])
    [1.03, 1.04]
"""

lowerCamelCase__			= {
    """bleurt-tiny-128""": """https://storage.googleapis.com/bleurt-oss/bleurt-tiny-128.zip""",
    """bleurt-tiny-512""": """https://storage.googleapis.com/bleurt-oss/bleurt-tiny-512.zip""",
    """bleurt-base-128""": """https://storage.googleapis.com/bleurt-oss/bleurt-base-128.zip""",
    """bleurt-base-512""": """https://storage.googleapis.com/bleurt-oss/bleurt-base-512.zip""",
    """bleurt-large-128""": """https://storage.googleapis.com/bleurt-oss/bleurt-large-128.zip""",
    """bleurt-large-512""": """https://storage.googleapis.com/bleurt-oss/bleurt-large-512.zip""",
    """BLEURT-20-D3""": """https://storage.googleapis.com/bleurt-oss-21/BLEURT-20-D3.zip""",
    """BLEURT-20-D6""": """https://storage.googleapis.com/bleurt-oss-21/BLEURT-20-D6.zip""",
    """BLEURT-20-D12""": """https://storage.googleapis.com/bleurt-oss-21/BLEURT-20-D12.zip""",
    """BLEURT-20""": """https://storage.googleapis.com/bleurt-oss-21/BLEURT-20.zip""",
}






@datasets.utils.file_utils.add_start_docstrings(_DESCRIPTION			,      _KWARGS_DESCRIPTION					)
class    SCREAMING_SNAKE_CASE			(							datasets.Metric					):





							def 						UpperCamelCase_					(   self		:		Any	):

											'''simple docstring'''
											return datasets.MetricInfo(
											    description=_DESCRIPTION      ,				citation=_CITATION      ,				homepage="""https://github.com/google-research/bleurt"""      ,				inputs_description=_KWARGS_DESCRIPTION      ,				features=datasets.Features(
											        {
											            """predictions""": datasets.Value("""string"""      ,				id="""sequence"""	),
											            """references""": datasets.Value("""string"""      ,				id="""sequence"""	),
											        }	)      ,				codebase_urls=["""https://github.com/google-research/bleurt"""]      ,				reference_urls=["""https://github.com/google-research/bleurt""", """https://arxiv.org/abs/2004.04696"""]      ,				)





							def 						UpperCamelCase_					(   self		:		Union[str, Any]      ,				__lowercase		:		Union[str, Any]	):

											'''simple docstring'''
											# check that config name specifies a valid BLEURT model
											if self.config_name == "default":
															logger.warning(
															    """Using default BLEURT-Base checkpoint for sequence maximum length 128. """
															    """You can use a bigger model for better results with e.g.: datasets.load_metric('bleurt', 'bleurt-large-512')."""	)
															__a       =		"""bleurt-base-128"""

											if self.config_name.lower() in CHECKPOINT_URLS:
															__a       =		self.config_name.lower()

											elif self.config_name.upper() in CHECKPOINT_URLS:
															__a       =		self.config_name.upper()

											else:
															raise KeyError(
															    F"{self.config_name} model not found. You should supply the name of a model checkpoint for bleurt in {CHECKPOINT_URLS.keys()}"	)

											# download the model checkpoint specified by self.config_name and set up the scorer
											__a       =		dl_manager.download_and_extract(CHECKPOINT_URLS[checkpoint_name]	)
											__a       =		score.BleurtScorer(os.path.join(__lowercase      ,				__lowercase	)	)







							def 						UpperCamelCase_					(   self		:		Dict      ,				__lowercase		:		str      ,				__lowercase		:		Dict	):

											'''simple docstring'''
											__a       =		self.scorer.score(references=__lowercase      ,				candidates=__lowercase	)
											return {"scores": scores}





import itertools
import os
import random
import tempfile
import unittest

import numpy as np

from transformers import TvltFeatureExtractor, is_datasets_available
from transformers.testing_utils import check_json_file_has_correct_format, require_torch, require_torchaudio
from transformers.utils.import_utils import is_torch_available

from ...test_sequence_feature_extraction_common import SequenceFeatureExtractionTestMixin


if is_torch_available():
						import torch

if is_datasets_available():
						from datasets import load_dataset

lowerCamelCase__			= random.Random()

def   lowerCAmelCase__						(							_SCREAMING_SNAKE_CASE       :			List[str]				,     _SCREAMING_SNAKE_CASE       :			int=1.0				,     _SCREAMING_SNAKE_CASE       :			Any=None				,     _SCREAMING_SNAKE_CASE       :			Any=None    ):
				"""simple docstring"""







				if rng is None:
								__a       =		global_rng

				__a       =		[]
				for batch_idx in range(shape[0]    ):
								values.append([]    )
								for _ in range(shape[1]    ):
												values[-1].append(rng.random() * scale    )

				return values






class    SCREAMING_SNAKE_CASE			(							unittest.TestCase					):





							def __init__(   self		:		Dict      ,				__lowercase		:		Tuple      ,				__lowercase		:		Tuple=7      ,				__lowercase		:		Optional[int]=400      ,				__lowercase		:		int=2000      ,				__lowercase		:		List[Any]=2048      ,				__lowercase		:		List[str]=128      ,				__lowercase		:		Union[str, Any]=1      ,				__lowercase		:		str=512      ,				__lowercase		:		List[str]=30      ,				__lowercase		:		Tuple=44100      ,				):

											'''simple docstring'''
											__a       =		parent
											__a       =		batch_size
											__a       =		min_seq_length
											__a       =		max_seq_length
											__a       =		(self.max_seq_length - self.min_seq_length) // (self.batch_size - 1)
											__a       =		spectrogram_length
											__a       =		feature_size
											__a       =		num_audio_channels
											__a       =		hop_length
											__a       =		chunk_length
											__a       =		sampling_rate





							def 						UpperCamelCase_					(   self		:		Optional[int]	):

											'''simple docstring'''
											return {
											    "spectrogram_length": self.spectrogram_length,
											    "feature_size": self.feature_size,
											    "num_audio_channels": self.num_audio_channels,
											    "hop_length": self.hop_length,
											    "chunk_length": self.chunk_length,
											    "sampling_rate": self.sampling_rate,
											}







							def 						UpperCamelCase_					(   self		:		Optional[int]      ,				__lowercase		:		Optional[int]=False      ,				__lowercase		:		Any=False	):

											'''simple docstring'''
											def _flatten(__lowercase		:		Tuple	):
															return list(itertools.chain(*__lowercase	)	)

											if equal_length:
															__a       =		[floats_list((self.max_seq_length, self.feature_size)	) for _ in range(self.batch_size	)]
											else:
															# make sure that inputs increase in size
															__a       =		[
															    floats_list((x, self.feature_size)	)
															    for x in range(self.min_seq_length      ,				self.max_seq_length      ,				self.seq_length_diff	)
															]
											if numpify:
															__a       =		[np.asarray(__lowercase	) for x in speech_inputs]
											return speech_inputs






@require_torch
@require_torchaudio
class    SCREAMING_SNAKE_CASE			(							lowerCamelCase__			,      unittest.TestCase					):
							__lowerCamelCase	:	Dict    =TvltFeatureExtractor





							def 						UpperCamelCase_					(   self		:		Any	):

											'''simple docstring'''
											__a       =		TvltFeatureExtractionTester(self	)





							def 						UpperCamelCase_					(   self		:		int	):

											'''simple docstring'''
											__a       =		self.feature_extraction_class(**self.feat_extract_dict	)
											self.assertTrue(hasattr(__lowercase      ,				"""spectrogram_length"""	)	)
											self.assertTrue(hasattr(__lowercase      ,				"""feature_size"""	)	)
											self.assertTrue(hasattr(__lowercase      ,				"""num_audio_channels"""	)	)
											self.assertTrue(hasattr(__lowercase      ,				"""hop_length"""	)	)
											self.assertTrue(hasattr(__lowercase      ,				"""chunk_length"""	)	)
											self.assertTrue(hasattr(__lowercase      ,				"""sampling_rate"""	)	)





							def 						UpperCamelCase_					(   self		:		List[str]	):

											'''simple docstring'''
											__a       =		self.feature_extraction_class(**self.feat_extract_dict	)

											with tempfile.TemporaryDirectory() as tmpdirname:
															__a       =		feat_extract_first.save_pretrained(__lowercase	)[0]
															check_json_file_has_correct_format(__lowercase	)
															__a       =		self.feature_extraction_class.from_pretrained(__lowercase	)

											__a       =		feat_extract_first.to_dict()
											__a       =		feat_extract_second.to_dict()
											__a       =		dict_first.pop("""mel_filters"""	)
											__a       =		dict_second.pop("""mel_filters"""	)
											self.assertTrue(np.allclose(__lowercase      ,				__lowercase	)	)
											self.assertEqual(__lowercase      ,				__lowercase	)





							def 						UpperCamelCase_					(   self		:		Optional[int]	):

											'''simple docstring'''
											__a       =		self.feature_extraction_class(**self.feat_extract_dict	)

											with tempfile.TemporaryDirectory() as tmpdirname:
															__a       =		os.path.join(__lowercase      ,				"""feat_extract.json"""	)
															feat_extract_first.to_json_file(__lowercase	)
															__a       =		self.feature_extraction_class.from_json_file(__lowercase	)

											__a       =		feat_extract_first.to_dict()
											__a       =		feat_extract_second.to_dict()
											__a       =		dict_first.pop("""mel_filters"""	)
											__a       =		dict_second.pop("""mel_filters"""	)
											self.assertTrue(np.allclose(__lowercase      ,				__lowercase	)	)
											self.assertEqual(__lowercase      ,				__lowercase	)





							def 						UpperCamelCase_					(   self		:		Dict	):

											'''simple docstring'''
											# Initialize feature_extractor
											__a       =		self.feature_extraction_class(**self.feat_extract_dict	)

											# create three inputs of length 800, 1000, and 1200
											__a       =		[floats_list((1, x)	)[0] for x in range(800      ,				1400      ,				200	)]
											__a       =		[np.asarray(__lowercase	) for speech_input in speech_inputs]

											# Test not batched input
											__a       =		feature_extractor(np_speech_inputs[0]      ,				return_tensors="""np"""      ,				sampling_rate=44100	).audio_values

											self.assertTrue(encoded_audios.ndim == 4	)
											self.assertTrue(encoded_audios.shape[-1] == feature_extractor.feature_size	)
											self.assertTrue(encoded_audios.shape[-2] <= feature_extractor.spectrogram_length	)
											self.assertTrue(encoded_audios.shape[-3] == feature_extractor.num_channels	)

											# Test batched
											__a       =		feature_extractor(__lowercase      ,				return_tensors="""np"""      ,				sampling_rate=44100	).audio_values

											self.assertTrue(encoded_audios.ndim == 4	)
											self.assertTrue(encoded_audios.shape[-1] == feature_extractor.feature_size	)
											self.assertTrue(encoded_audios.shape[-2] <= feature_extractor.spectrogram_length	)
											self.assertTrue(encoded_audios.shape[-3] == feature_extractor.num_channels	)

											# Test audio masking
											__a       =		feature_extractor(
											    __lowercase      ,				return_tensors="""np"""      ,				sampling_rate=44100      ,				mask_audio=__lowercase	).audio_values

											self.assertTrue(encoded_audios.ndim == 4	)
											self.assertTrue(encoded_audios.shape[-1] == feature_extractor.feature_size	)
											self.assertTrue(encoded_audios.shape[-2] <= feature_extractor.spectrogram_length	)
											self.assertTrue(encoded_audios.shape[-3] == feature_extractor.num_channels	)

											# Test 2-D numpy arrays are batched.
											__a       =		[floats_list((1, x)	)[0] for x in (800, 800, 800)]
											__a       =		np.asarray(__lowercase	)
											__a       =		feature_extractor(__lowercase      ,				return_tensors="""np"""      ,				sampling_rate=44100	).audio_values
											self.assertTrue(encoded_audios.ndim == 4	)
											self.assertTrue(encoded_audios.shape[-1] == feature_extractor.feature_size	)
											self.assertTrue(encoded_audios.shape[-2] <= feature_extractor.spectrogram_length	)
											self.assertTrue(encoded_audios.shape[-3] == feature_extractor.num_channels	)





							def 						UpperCamelCase_					(   self		:		Optional[int]      ,				__lowercase		:		str	):

											'''simple docstring'''
											__a       =		load_dataset("""hf-internal-testing/librispeech_asr_dummy"""      ,				"""clean"""      ,				split="""validation"""	)
											# automatic decoding with librispeech
											__a       =		ds.sort("""id"""	).select(range(__lowercase	)	)[:num_samples]["""audio"""]

											return [x["array"] for x in speech_samples]







							def 						UpperCamelCase_					(   self		:		str	):

											'''simple docstring'''
											__a       =		self._load_datasamples(1	)
											__a       =		TvltFeatureExtractor()
											__a       =		feature_extractor(__lowercase      ,				return_tensors="""pt"""	).audio_values

											self.assertEquals(audio_values.shape      ,				(1, 1, 192, 128)	)

											__a       =		torch.tensor([[-0.3032, -0.2708], [-0.4434, -0.4007]]	)
											self.assertTrue(torch.allclose(audio_values[0, 0, :2, :2]      ,				__lowercase      ,				atol=1E-4	)	)
