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"""ViHOS - Vietnamese Hate and Offensive Spans dataset"""

import pandas as pd

import datasets

_DESCRIPTION = """\
This is a dataset of Vietnamese Hate and Offensive Spans dataset from social media texts.
"""

_HOMEPAGE = "https://huggingface.co/datasets/phusroyal/ViHOS"

_LICENSE = "mit"

_URLS = [
    "https://huggingface.co/datasets/phusroyal/ViHOS/blob/main/train_span_extraction/train.csv"
]

class ViHOS(datasets.GeneratorBasedBuilder):
    VERSION = datasets.Version("2.0.0")

    def _info(self):
        return datasets.DatasetInfo(
            description=_DESCRIPTION,
            
            features=datasets.Features(
                {
                    "id": datasets.Value("string"),
                    "content": datasets.Value("string"),
                    "index_spans": datasets.Value("string")
                }
            ),
            
            homepage=_HOMEPAGE,
            
            license=_LICENSE
        )

    def _split_generators(self, dl_manager):
        data_dir = dl_manager.download_and_extract(_URLS)
        
        return [
            datasets.SplitGenerator(
                name=datasets.Split.TRAIN,
                gen_kwargs={
                    "filepath": data_dir[0],
                    "split": "train",
                },
            )
        ]

    def _generate_examples(self, filepath, split):
        colnames=['id', 'Content', 'Span ids'] 

        with open(filepath, 'r', encoding="utf-8") as f:
            for i, line in enumerate(f):
                data = pd.read_csv(f, colnames=colnames, header = None)
                yield i, data
                
        # data = pd.read_csv(filepath, colnames=colnames, header = None)
        # yield data.iloc[:, 0], dataframe.iloc[:, 1], dataframe.iloc[:, 2]