import json
from collections import defaultdict
from enum import Enum
from types import SimpleNamespace

from bigbio.utils.license import License


BigBioValues = SimpleNamespace(NULL="<BB_NULL_STR>")

# shamelessly compied from:
# https://github.com/huggingface/datasets/blob/master/src/datasets/utils/metadata.py
langs_json = json.load(open("languages.json", "r"))
langs_dict = {k.replace("-", "_").upper(): v for k, v in json.loads(langs_json).items()}
Lang = Enum("Lang", langs_dict)


METADATA: dict = {
    "_LOCAL": bool,
    "_LANGUAGES": Lang,
    "_PUBMED": bool,
    "_LICENSE": License,
    "_DISPLAYNAME": str,
}


class Tasks(Enum):
    NAMED_ENTITY_RECOGNITION = "NER"
    NAMED_ENTITY_DISAMBIGUATION = "NED"
    EVENT_EXTRACTION = "EE"
    RELATION_EXTRACTION = "RE"
    COREFERENCE_RESOLUTION = "COREF"

    QUESTION_ANSWERING = "QA"

    TEXTUAL_ENTAILMENT = "TE"

    SEMANTIC_SIMILARITY = "STS"

    PARAPHRASING = "PARA"
    TRANSLATION = "TRANSL"
    SUMMARIZATION = "SUM"

    TEXT_CLASSIFICATION = "TXTCLASS"