# coding=utf-8
# Copyright 2023 The HuggingFace Datasets Authors.
#
# Licensed under the Creative Commons version 4.0 and Mozilla Public License version 2.0,
# (the "Licenses"); you may not use this file except in compliance with the Licenses.
# You may obtain a copies of the Licenses at
#
#     https://creativecommons.org/licenses/by/4.0/
#     and https://www.mozilla.org/en-US/MPL/2.0/
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the Licenses for the specific language governing permissions and
# limitations under the Licenses.

# Lint as: python3

import csv
import os

import datasets


logger = datasets.logging.get_logger(__name__)


_CITATION = """\
@inproceedings{pudo23_interspeech,
  author={Mikołaj Pudo and Mateusz Wosik and Adam Cieślak and Justyna Krzywdziak and Bożena Łukasiak and Artur Janicki},
  title={{MOCKS} 1.0: Multilingual Open Custom Keyword Spotting Testset},
  year={2023},
  booktitle={Proc. Interspeech 2023},
}
"""

_DESCRIPTION = """\
Multilingual Open Custom Keyword Spotting Testset (MOCKS) is a comprehensive 
audio testset for evaluation and benchmarking Open-Vocabulary Keyword Spotting (OV-KWS) models.
"""


#_BASE_URL = "https://huggingface.co/datasets/voiceintelligenceresearch/MOCKS/tree/main"
_BASE_URL = "https://huggingface.co/datasets/mikolaj-p/MOCKS-test/tree/main"
_DL_URLS_TEMPLATE = {
    "data": "%s/%s/test/%s/data.tar.gz",
    "transcription" : "%s/%s/test/data_%s_transcription.tsv",
    "positive" : "%s/%s/test/%s/all.pair.positive.tsv",
    "similar" : "%s/%s/test/%s/all.pair.similar.tsv",
    "different" : "%s/%s/test/%s/all.pair.different.tsv",
    "positive_subset" : "%s/%s/test/%s/subset.pair.positive.tsv",
    "similar_subset" : "%s/%s/test/%s/subset.pair.similar.tsv",
    "different_subset" : "%s/%s/test/%s/subset.pair.different.tsv",
}

_MOCKS_SETS = [
    "en.LS-clean",
]
#    "en.LS-other",
#    "en.MCV",
#    "de.MCV",
#    "es.MCV",
#    "fr.MCV",
#    "it.MCV"]

_MOCKS_SUFFIXES = [
    "",
    ".positive",
    ".similar",
    ".different",
    ".subset",
    ".positive_subset",
    ".similar_subset",
    ".different_subset"]


class Mocks(datasets.GeneratorBasedBuilder):
    """Mocks Dataset."""
    DEFAULT_CONFIG_NAME = "en.LS-clean"

    BUILDER_CONFIGS = [datasets.BuilderConfig(name=subset+suffix, description=subset+suffix)
            for subset in _MOCKS_SETS for suffix in _MOCKS_SUFFIXES]

    def _info(self):
        logger.info("info")
        return datasets.DatasetInfo(
            description=_DESCRIPTION,
            features=datasets.Features({
                    "keyword_id": datasets.Value("string"),
                    "keyword_transcription": datasets.Value("string"),
                    "test_id": datasets.Value("string"),
                    "test_transcription": datasets.Value("string"),
                    "test_audio": datasets.Audio(sampling_rate=16000),
                    "label": datasets.Value("bool"),
                }
            ),
            homepage=_BASE_URL,
            citation=_CITATION
        )


    def _split_generators(self, dl_manager):
        logger.info("split_generator")
        name_split = self.config.name.split(".")
        subset_lang = name_split[0]
        subset_name = name_split[1]

        if len(name_split) == 2:
            pairs_types = ["positive", "similar", "different"]
        elif name_split[2] == "subset":
            pairs_types = ["positive_subset", "similar_subset", "different_subset"]
        else:
            pairs_types = [name_split[2]]

        offline_archive_path = dl_manager.download({
            k: v%(subset_lang, subset_name, "offline") 
            for k, v in _DL_URLS_TEMPLATE.items()
            })
#        online_archive_path = dl_manager.download({
#            k: v%(subset_lang, subset_name, "online") 
#            for k, v in _DL_URLS_TEMPLATE.items()
#            })

        split_offline = [datasets.SplitGenerator(
                name="offline",
                gen_kwargs={
                    "audio_files": dl_manager.iter_archive(offline_archive_path["data"]),
                    "transcription_keyword": offline_archive_path["transcription"],
                    "transcription_test": offline_archive_path["transcription"],
                    "pairs": [offline_archive_path[pair_type] for pair_type in pairs_types],
                }
            )
        ]

#        split_online = [datasets.SplitGenerator(
#                name="online",
#                gen_kwargs={
#                    "audio_files": dl_manager.iter_archive(online_archive_path["data"]),
#                    "transcription_keyword": offline_archive_path["transcription"],
#                    "transcription_test": online_archive_path["transcription"],
#                    "pairs": [online_archive_path[pair_type] for pair_type in pairs_types],
#                }
#            )
#        ]

#        return split_offline + split_online
        return split_offline


    def _read_transcription(self, transcription_path):
        transcription_metadata = {}

        with open(transcription_path, encoding="utf-8") as f:
            reader = csv.reader(f, delimiter="\t")
            next(reader, None)

            for row in reader:
                _, audio_id = os.path.split(row[0])
                transcription = row[1]
                transcription_metadata[audio_id] = {
                    "audio_id": audio_id,
                    "transcription": transcription}

        return transcription_metadata


    def _generate_examples(self, audio_files, transcription_keyword, transcription_test, pairs):
        transcription_keyword_metadata = self._read_transcription(transcription_keyword)

        transcription_test_metadata = self._read_transcription(transcription_test)

        pair_metadata = {}
        for pair in pairs:
            with open(pair, encoding="utf-8") as f:
                reader = csv.reader(f, delimiter="\t")
                next(reader, None)

                for row in reader:
                    _, keyword_id = os.path.split(row[0])
                    _, test_id = os.path.split(row[1])

                    if keyword_id not in transcription_keyword_metadata:
                        logger.error("No transcription and audio for keyword %s"%(keyword_id))
                        continue
                    if test_id not in transcription_test_metadata:
                        logger.error("No transcription and audio for test case %s"%(test_id))
                        continue

                    if test_id not in pair_metadata:
                        pair_metadata[test_id] = []

                    pair_metadata[test_id].append([keyword_id, int(row[-1])])

        id_ = 0
        for test_path, test_f in audio_files:
            _, test_id = os.path.split(test_path)
            if test_id in pair_metadata:
                test_audio = {"bytes": test_f.read()}
                for keyword_id, label in pair_metadata[test_id]:
                    yield id_, {
                        "keyword_id": keyword_id,
                        "keyword_transcription": transcription_keyword_metadata[keyword_id]["transcription"],
                        "test_id": test_id,
                        "test_transcription": transcription_test_metadata[test_id]["transcription"],
                        "test_audio": test_audio,
                        "label": label}
                    id_ += 1