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#!/usr/bin/python3
# -*- coding: utf-8 -*-
import argparse
from collections import defaultdict
import json
import os
import sys

pwd = os.path.abspath(os.path.dirname(__file__))
sys.path.append(os.path.join(pwd, "../../"))

from datasets import load_dataset, DownloadMode
from tqdm import tqdm

from language_identification import LANGUAGE_MAP
from project_settings import project_path


def get_args():
    parser = argparse.ArgumentParser()
    parser.add_argument("--dataset_path", default="stsb_multi_mt", type=str)
    parser.add_argument(
        "--dataset_cache_dir",
        default=(project_path / "hub_datasets").as_posix(),
        type=str
    )
    parser.add_argument(
        "--output_file",
        default=(project_path / "data/stsb_multi_mt.jsonl"),
        type=str
    )

    args = parser.parse_args()
    return args


def main():
    args = get_args()

    name_list = ["de", "en", "es", "fr", "it", "nl", "pl", "pt", "ru", "zh"]

    dataset_dict_list = list()
    for name in name_list:
        dataset_dict = load_dataset(
            path=args.dataset_path,
            name=name,
            cache_dir=args.dataset_cache_dir,
            # download_mode=DownloadMode.FORCE_REDOWNLOAD
        )
        print(dataset_dict)
        dataset_dict_list.append((name, dataset_dict))

    split_map = {
        "dev": "validation",
        "validate": "validation"
    }

    language_map = {
        "zh": "zh-cn"
    }

    text_set = set()
    counter = defaultdict(int)
    with open(args.output_file, "w", encoding="utf-8") as f:
        for language, dataset_dict in dataset_dict_list:
            language = language_map.get(language, language)

            for k, v in dataset_dict.items():
                if k in split_map.keys():
                    split = split_map[k]
                else:
                    split = k
                if split not in ("train", "validation", "test"):
                    print("skip split: {}".format(split))
                    continue

                for sample in tqdm(v):
                    sentence1 = sample["sentence1"]
                    sentence2 = sample["sentence2"]

                    for text in [sentence1, sentence2]:
                        text = text.strip()

                        if text in text_set:
                            continue
                        text_set.add(text)

                        if language not in LANGUAGE_MAP.keys():
                            raise AssertionError(language)

                        row = {
                            "text": text,
                            "language": language,
                            "data_source": "stsb_multi_mt",
                            "split": split
                        }
                        row = json.dumps(row, ensure_ascii=False)
                        f.write("{}\n".format(row))
                        counter[split] += 1

    print("counter: {}".format(counter))

    return


if __name__ == '__main__':
    main()