import json
import datasets

class GeoWikiFeatures(datasets.GeneratorBasedBuilder):
    VERSION = datasets.Version("1.0.0")

    def _info(self):
        return datasets.DatasetInfo(
            features=datasets.Features({
                "sentence": datasets.Value("string"),
                "annotations": datasets.Sequence({
                    "text": datasets.Value("string"),
                    "label": datasets.Value("string"),
                    "start": datasets.Value("int32"),
                    "end": datasets.Value("int32"),
                }),
            })
        )

    def _split_generators(self, dl_manager):
        return [
            datasets.SplitGenerator(
                name=datasets.Split.TRAIN,
                gen_kwargs={"filepath": "train.jsonl"},
            ),
            datasets.SplitGenerator(
                name=datasets.Split.VALIDATION,
                gen_kwargs={"filepath": "validation.jsonl"},
            ),
            datasets.SplitGenerator(
                name=datasets.Split.TEST,
                gen_kwargs={"filepath": "test.jsonl"},
            ),
        ]

    def _generate_examples(self, filepath):
        with open(filepath, encoding="utf-8") as f:
            for i, line in enumerate(f):
                yield i, json.loads(line)