import os
from pypdf import PdfReader

def extract_text_from_pdf(pdf_path: str) -> str:
    reader = PdfReader(pdf_path)
    chunks = []
    for page in reader.pages:
        chunks.append(page.extract_text() or "")
    return "\n".join(chunks).strip()

def save_uploaded_pdf(src_path: str, dest_dir: str) -> str:
    os.makedirs(dest_dir, exist_ok=True)
    base = os.path.basename(src_path)
    dest_path = os.path.join(dest_dir, base)
    # перезапись ок для пилота
    with open(src_path, "rb") as fsrc, open(dest_path, "wb") as fdst:
        fdst.write(fsrc.read())
    return dest_path