bot.py

from pyrogram import Client, Message, Filters
import requests
import datetime
from data import get_cite, get_pdf, get_intext

time = datetime.datetime.now()

API_ID = 
API_HASH = ""
BOT_TOKEN = ""

bot = Client("bot", API_ID, API_HASH, BOT_TOKEN)

@bot.on_message(Filters.command("start", prefixes=['/']))
async def create_user_profile(bot: bot, msg: Message):
    chat_id = msg.chat.id
    print(chat_id)
    first_name = msg.chat.first_name
    await bot.send_message(chat_id, "Send a DOI number or a DOI link for Harward style citation.")

@bot.on_message()
async def my_function(client, message): 
    chat_id = message.chat.id
    msg = message["text"]
    if "doi.org" in msg:
        msg = msg.replace("https://doi.org/", "").replace("doi.org/", "")
    try:
        citation = await get_cite(msg)
        if not citation:
            text = "ERROR: DOI Not Found!"
            print(text)
            await bot.send_message(chat_id, text)
        else:
            pdf = await get_pdf(msg)
            if not pdf:
                pdf = "PDF not available!"
            await bot.send_message(chat_id, pdf)
            in_text  = await get_intext(msg, citation)
            await bot.send_message(chat_id, citation, disable_web_page_preview=True)
            await bot.send_message(chat_id, in_text, disable_web_page_preview=True)
    except Exception as e:
        print(e)
        text = "Citation not available. Make sure your link/code. is correct."
        await bot.send_message(chat_id, text)
bot.run()