import warnings
warnings.filterwarnings("ignore")  # Optional: silence unimportant Streamlit/TF warnings



import streamlit as st
import os
import time
from dotenv import load_dotenv
import sys
import os
sys.path.append(os.path.abspath(".."))

from rag_engine import generate_answer, summarize_document

from pdf_parser import parse_pdf

from pdf_parser import parse_pdf

load_dotenv()

st.set_page_config(page_title="DocSight-RAG 👁️📄", page_icon="📚")
st.title("DocSight-RAG: Ask Your PDFs")

with st.sidebar:
    st.header("Upload PDF")
    uploaded_file = st.file_uploader("Choose a PDF", type=["pdf"])
    process = st.button("Process PDF")

if uploaded_file and process:
    with st.spinner("Processing..."):
        with open(uploaded_file.name, "wb") as f:
            f.write(uploaded_file.read())
        parse_pdf(uploaded_file.name)
    st.success("✅ PDF processed.")

question = st.text_input("Ask something:")

if question:
    with st.spinner("Generating answer..."):
        start = time.time()
        answers = generate_answer(question)
        end = time.time()

        for ans in answers:
            st.subheader(f"📄 Page {ans['page']}")
            st.image(ans["thumbnail"], width=250, caption="Reference Page")
            st.write(f"💬 **Answer:** {ans['answer']}")

        st.info(f"⚡ Answered in {round(end - start, 2)} seconds")

if st.button("📘 Summarize Document"):
    with st.spinner("Summarizing entire document..."):
        summary = summarize_document()
        st.subheader("📘 Document Summary")
        st.write(summary)