import pandas as pd
import PyPDF2
import streamlit as st

def process_uploaded_file(uploaded_file):
    if uploaded_file.name.endswith('.csv'):
        data = pd.read_csv(uploaded_file)
    elif uploaded_file.name.endswith(('.xls', '.xlsx')):
        data = pd.read_excel(uploaded_file)
    elif uploaded_file.name.endswith('.pdf'):
        reader = PyPDF2.PdfReader(uploaded_file)
        text = "\n".join(page.extract_text() for page in reader.pages)
        st.info("Extracted text from PDF. Please ensure it follows the expected format.")
        st.text_area("Extracted Text", text, height=200)
        return None
    else:
        st.error("Unsupported file format. Please upload a CSV, Excel, or PDF file.")
        return None

    return data