import datasets
import collections
import gzip
import textwrap

_DESCRIPTION = "tba"
_URL = "tba"
_CITATION = "tba"
_LICENSE = "tba"

class VoxLinguaConfig(datasets.BuilderConfig):
    """VoxLingua107 corpus."""
    def __init__(
        self,
        features,
        url,
        data_url=None,
        supervised_keys=None,
        shuffled=False, 
        deduplicated=False,
        task_templates=None,
        **kwargs,
    ):
        super(VoxLinguaConfig, self).__init__(version=datasets.Version("1.9.0", ""), **kwargs)
        self.features = features
        self.data_url = data_url
        self.url = url
        self.supervised_keys = supervised_keys
        self.task_templates = task_templates

def _languages():
    """Create the sorted dictionary of language codes, and language names.
    Returns:
      The sorted dictionary as an instance of `collections.OrderedDict`.
    """
    langs = {
            "af":"",
            "am":"",
            "ar":"",
            "as":"",
            "az":"",
            "ba":"",
            "be":"",
            "bg":"",
            "bn":"",
            "bo":"",
            "br":"",
            "bs":"",
            "ca":"",
            "ceb":"",
            "cs":"",
            "cy":"",
            "da":"",
            "de":"",
            "el":"",
            "en":"",
            "eo":"",
            "es":"",
            "et":"",
            "eu":"",
            "fa":"",
            "fi":"",
            "fo":"",
            "fr":"",
            "gl":"",
            "gn":"",
            "gu":"",
            "gv":"",
            "ha":"",
            "haw":"",
            "hi":"",
            "hr":"",
            "ht":"",
            "hu":"",
            "hy":"",
            "ia":"",
            "id":"",
            "is":"",
            "it":"",
            "iw":"",
            "ja":"",
            "jw":"",
            "ka":"",
            "kk":"",
            "km":"",
            "kn":"",
            "ko":"",
            "la":"",
            "lb":"",
            "ln":"",
            "lo":"",
            "lt":"",
            "lv":"",
            "mg":"",
            "mi":"",
            "mk":"",
            "ml":"",
            "mn":"",
            "mr":"",
            "ms":"",
            "mt":"",
            "my":"",
            "ne":"",
            "nl":"",
            "nn":"",
            "no":"",
            "oc":"",
            "pa":"",
            "pl":"",
            "ps":"",
            "pt":"",
            "ro":"",
            "ru":"",
            "sa":"",
            "sco":"",
            "sd":"",
            "si":"",
            "sk":"",
            "sl":"",
            "sn":"",
            "so":"",
            "sq":"",
            "sr":"",
            "su":"",
            "sv":"",
            "sw":"",
            "ta":"",
            "te":"",
            "tg":"",
            "th":"",
            "tk":"",
            "tl":"",
            "tr":"",
            "tt":"",
            "uk":"",
            "ur":"",
            "uz":"",
            "vi":"",
            "war":"",
            "yi":"",
            "yo":"",
            "zh":""
    }
    return collections.OrderedDict(sorted(langs.items()))


class VoxLingua(datasets.GeneratorBasedBuilder):
    BUILDER_CONFIGS = [
        VoxLinguaConfig(
            name = language,
            description=textwrap.dedent(
                """ tbd """
            ),
            shuffled=False,
            deduplicated=False,
            features=datasets.Features(
                        {
                            "file": datasets.Value("string"),
                            "audio": datasets.Audio(sampling_rate=16_000),
                            "label": datasets.ClassLabel(
                                names=[f"{i}" for i in range(107)]
                            ),
                        }
                    ),
            supervised_keys=("file", "label"),
            url="http://bark.phon.ioc.ee/voxlingua107/",
            data_url="http://bark.phon.ioc.ee/voxlingua107/{language}.zip"
        )
        for language in _languages()
    ] 

    BUILDER_CONFIG_CLASS = VoxLinguaConfig

    def _info(self):
         return datasets.DatasetInfo(
            description=_DESCRIPTION,
            features=self.config.features,
            supervised_keys=self.config.supervised_keys,
            homepage=self.config.url,
            citation=_CITATION,
            task_templates=self.config.task_templates,
        )

    def _split_generators(self, dl_manager):
        train_data_urls = [self.config.url + f"{key}.zip" for key in _languages().keys()]
        downloaded_files_train = dl_manager.download(train_data_urls)
        dev_data_url = [self.config.url + f"dev.zip"]
        downloaded_files_dev = dl_manager.download(dev_data_url)
        return [
            datasets.SplitGenerator(name=datasets.Split.TRAIN, gen_kwargs={"archive_path": downloaded_files_train}),
            datasets.SplitGenerator(name=datasets.Split.DEV, gen_kwargs={"archive_path": downloaded_files_dev}),
        ]
    
    def _generate_examples(self, archive_path, split=None):
       return ""