import PyPDF2
import docx

def extract_text_from_file(uploaded_file):
    if uploaded_file.name.endswith(".pdf"):
        return extract_text_from_pdf(uploaded_file)
    elif uploaded_file.name.endswith(".docx"):
        return extract_text_from_docx(uploaded_file)
    else:
        return "Unsupported file format."

def extract_text_from_pdf(uploaded_file):
    pdf_reader = PyPDF2.PdfReader(uploaded_file)
    text = "".join([page.extract_text() for page in pdf_reader.pages if page.extract_text()])
    return text

def extract_text_from_docx(uploaded_file):
    doc = docx.Document(uploaded_file)
    return "\n".join([para.text for para in doc.paragraphs])