import re
import nltk

from typing import List
from langchain.text_splitter import RecursiveCharacterTextSplitter


class SplitTextIntoSentences:
    @staticmethod
    def nltk_sent_tokenize(text: str) -> List[str]:
        """especially for English"""
        return [s.strip() for s in nltk.sent_tokenize(text) if s.strip()]

    @staticmethod
    def lang_chain_tokenize(text: str) -> List[str]:
        splitter = RecursiveCharacterTextSplitter(chunk_size=128, chunk_overlap=16)
        docs = splitter.split_text(text)
        return docs