import json
import datasets

logger = datasets.logging.get_logger(__name__)


_DESCRIPTION = """\
Malyuk — a large, compiled corpus of ukrainian language texts.
113GB of text data in jsonl format.
Combination of UberText 2.0, Ukrainian part of the Oscar, and Ukrainian News.

Nothing is guaranteed. Use at your own risk.
"""


_URLS = [
    "combined_ds_pt00.jsonlines",
    "combined_ds_pt01.jsonlines",
    "combined_ds_pt02.jsonlines",
    "combined_ds_pt03.jsonlines",
    "combined_ds_pt04.jsonlines",
    "combined_ds_pt05.jsonlines",
    "combined_ds_pt06.jsonlines",
    "combined_ds_pt07.jsonlines",
    "combined_ds_pt08.jsonlines",
    "combined_ds_pt09.jsonlines",
    "combined_ds_pt10.jsonlines",
    "combined_ds_pt11.jsonlines",
    "combined_ds_pt12.jsonlines",
    "combined_ds_pt13.jsonlines",
    "combined_ds_pt14.jsonlines",
    "combined_ds_pt15.jsonlines",
    "combined_ds_pt16.jsonlines",
    "combined_ds_pt17.jsonlines",
    "combined_ds_pt18.jsonlines",
    "combined_ds_pt19.jsonlines",
    "combined_ds_pt20.jsonlines",
    "combined_ds_pt21.jsonlines",
    "combined_ds_pt22.jsonlines",
]


class MalyukDataset(datasets.GeneratorBasedBuilder):
    """
    Malyuk Dataset

    ~^^^^^^:::^?7!!!!!~~~~~~~~~~~~~~^^^^^^::::::.............:::::::::^^:::::::^^^^^~~~~~~~~~~!:........
    ~^^^^^^:::^7!~!!!!!~~~~~~~^^^^^^^~~~~^^^^^^^::::::::::::^^^^^^^^^^:::::::::::^^~~~~~!!!~~!!:........
    ~~~^^^^:::^7!~!!!~~~~~~^^^^^^^^^~~~~~~~~~~~~~~~~~~~!!~~~~!~~~~~~~~~~~~~~~^^:::^^~~~~~~!!~!7^........
    ~~~^^^^^^:~7!!!~~!~~~~~~~~!!!!!!!!777777777777!!!~~!777???JJYY55YYJ?7?777777!~~~^~~~~~!77??^........
    !~~~^^^^^:~?!!!!!!!!!!7?Y55555555PBGPPPPPPPP5YJJ?777JY5PPPG########BBBBGGGGGP5Y?!~!~~~~77??:........
    7!~~^^^^^:^7!!!!!!!7?YPGBBGGGGGGGBB########BBGGPP5YY5GB####&&&&&##BGGGBB####BBG5?!!~~~~~!?7.........
    7!~~^~~~~~^!!!!!!!!?YPGGGP55PPGBB####&&&&&&##BBPJ7!~!75##&&&&&#BB###BBGGGB###BGPY?7~~~~^~7~:::^^^...
    ?7~~^JPJ7!7?~!!!77?J5PPPGBB#BGG&&@&#PG#&&&##BBGJ!^::::!5BBB###GY5#&&&#GG##BBBBGP5?7~~^^^^~~^~!?P5:..
    J7~~^JBGJ??7~!!!!7?JJ5PGGBBBG5J5GBG5Y5GBBGGGPPJ7!~::.:^!J555GPP5JY555JJ5GGGP55Y?!~~^^^^^^~!JY5B#?...
    J7!~~7PY?J??7!!!!!!7?JYYYYY5555555PPPP55YYYYYJ?!~~^:::^~!?JJJJY55YY555555Y?7!~~^^^^^^~~~^7Y55JYP~...
    J7!~~!J7?YYJ7!!!!!!!!777???JJY55555YYJJ????????7!~^:::^~!777!!!7??????77!~^^::::::^^^~!~~7PP5J7?~...
    J7!~~~!?Y5PG?7!!!!~~~~~~~~!!777777??777777????77!!~^::^!!777!~~^~~!!~~^:::...::::^^~~~!!!7GGPY!~:...
    ?7!!~~~7YPGGJ7!!!!!~~~~~~~~~~~~~~!!~~~~!77????77!!~^^:^~!77?7!~^^::^^^^^^^:^^^^^^~~~!!!77?PPY7~^....
    ?77!~~~!?5PPJ77!!!!!!~!!!!~~~~~~~^^^~~~!7?J?777!!~^^:::^!!7?J!~^^::::::^^~~~~~~~~~!!!!7??7YY?~~^....
    """

    VERSION = datasets.Version("1.0.0")
    DEFAULT_CONFIG_NAME = "default"
    BUILDER_CONFIGS = [
        datasets.BuilderConfig(name="default", version=VERSION, description=""),
    ]

    def _info(self):
        return datasets.DatasetInfo(
            description=_DESCRIPTION,
            features=datasets.Features(
                {
                    "id": datasets.Value("string"),
                    "compound_id": datasets.Value("string"),
                    "text": datasets.Value("string"),
                }
            ),
        )

    def _split_generators(self, dl_manager):
        downloaded_files = dl_manager.download(_URLS)

        return [
            datasets.SplitGenerator(
                name=datasets.Split.TRAIN, gen_kwargs={"filepaths": downloaded_files}
            )
        ]

    def _generate_examples(self, filepaths):
        """This function returns the examples in the raw (text) form."""
        logger.info("generating examples from = %s", filepaths)
        key = 0
        for path in filepaths:
            with open(path, encoding="utf-8") as f:
                for instruction_str in f:
                    instruction = json.loads(instruction_str)
                    yield key, instruction
                    key += 1