"""
Chunking utilities for the RAG agent.

Uses RecursiveCharacterTextSplitter from langchain-text-splitters with a chunk size of 500 and overlap of 100.
"""

from langchain_text_splitters import RecursiveCharacterTextSplitter

# Global splitter instance
splitter = RecursiveCharacterTextSplitter(chunk_size=500, chunk_overlap=100)


def split_document(text: str):
    """Split a document into chunks.

    Parameters
    ----------
    text: str
        Full text of the document.

    Returns
    -------
    list[str]
        List of chunk strings.
    """
    return splitter.split_text(text)