import streamlit as st

from typing import List, Union, Optional

from dotenv import load_dotenv, find_dotenv
from langchain.callbacks import get_openai_callback
from langchain.chat_models import ChatOpenAI
from langchain.embeddings.openai import OpenAIEmbeddings
from langchain.schema import (SystemMessage, HumanMessage, AIMessage)
from langchain.llms import LlamaCpp
from langchain.embeddings import LlamaCppEmbeddings
from langchain.callbacks.manager import CallbackManager
from langchain.callbacks.streaming_stdout import StreamingStdOutCallbackHandler
from langchain.text_splitter import TokenTextSplitter
from langchain.prompts import PromptTemplate
from langchain.vectorstores import Qdrant
from PyPDF2 import PdfReader
import streamlit as st

st.set_page_config(
    page_title="PDF Chat"
)
st.sidebar.title("Options")