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from pypdf import PdfReader  
import docx
from io import BytesIO
import logging
from fastapi import HTTPException


def parse_docx(file: BytesIO):
    doc = docx.Document(file)
    text = ""
    for para in doc.paragraphs:
        text += para.text + "\n"
    return text


def parse_pdf(file: BytesIO):
    try:
        doc = PdfReader(file)
        text = ""
        for page in doc.pages:
            text += page.extract_text()
        return text 
    except Exception as e:
        logging.error(f"Error while processing PDF: {str(e)}")
        raise HTTPException(
            status_code=500, detail="Error processing PDF file")

def parse_txt(file: BytesIO):
    return file.read().decode("utf-8")