from PyPDF2 import PdfReader
from langchain.text_splitter import RecursiveCharacterTextSplitter

def extract_pdf_text(pdf_docs):
    """
    Extracts text from a list of uploaded PDF files.
    """
    text = ""
    for pdf in pdf_docs:
        pdf_reader = PdfReader(pdf)
        for page in pdf_reader.pages:
            text += page.extract_text()
    return text

def split_text_into_chunks(text, chunk_size=10000, chunk_overlap=500):
    """
    Splits extracted text into smaller chunks for better processing.
    """
    text_splitter = RecursiveCharacterTextSplitter(chunk_size=chunk_size, chunk_overlap=chunk_overlap)
    return text_splitter.split_text(text)