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import os
from dotenv import load_dotenv
import tempfile
import streamlit as st
from langchain_community.document_loaders import PyPDFLoader
from main import summarize_pdf_document
from main import retrieve_documents
from main import embed_document_data
from main import is_document_embedded
load_dotenv()
def main():
st.sidebar.title("PDF Management")
uploaded_files = st.sidebar.file_uploader("Upload PDF files", type=["pdf"], accept_multiple_files=True)
files_info = [] # Initialize files_info to an empty list before checking for uploaded files
if uploaded_files:
files_info = save_uploaded_files(uploaded_files)
process_documents(files_info)
if st.button('Add Uploaded Documents in Q nd A'):
embed_documents(files_info)
# Call to display the Q&A section unconditionally
display_qna_section(files_info)
def save_uploaded_files(uploaded_files):
"""Save uploaded files to temporary directory and return their file paths along with original filenames."""
files_info = []
for uploaded_file in uploaded_files:
# Create a temporary file
with tempfile.NamedTemporaryFile(delete=False, suffix='.pdf') as tmpfile:
# Write contents of the uploaded file to the temporary file
tmpfile.write(uploaded_file.getvalue())
# Append both the temp file path and the original name
files_info.append((tmpfile.name, uploaded_file.name))
return files_info
def process_documents(files_info):
"""Handle document processing for summarization."""
st.header("Document Summaries")
summarize_button = st.button('Summarize Uploaded Documents')
if summarize_button:
for temp_path, original_name in files_info:
with st.container(): # Using container to better organize the display
st.write(f"Summary for {original_name}:") # Display the original file name
try:
summary = summarize_pdf_document(temp_path, os.getenv('OPENAI_API_KEY'))
st.text_area("", value=summary, height=200, key=f"summary_{original_name}")
except Exception as e:
st.error(f"Failed to summarize {original_name}: {str(e)}")
def embed_documents(files_info):
"""Embed each document with correct metadata, replacing temp path with original filename."""
for temp_path, original_name in files_info:
if not is_document_embedded(original_name): # Check if already embedded
try:
# Load the document
loader = PyPDFLoader(temp_path)
documents = loader.load()
# Update the metadata for each document
updated_documents = []
for doc in documents:
doc.metadata['source'] = original_name # Use original filename
updated_documents.append(doc)
embed_document_data(updated_documents) # Embed the documents
st.success(f"Embedded {original_name}")
except Exception as e:
st.error(f"Failed to embed {original_name}: {str(e)}")
else:
st.info(f"{original_name} is already embedded.")
def display_qna_section(files_info):
"""Display Q&A section."""
st.header("Question and Answer")
with st.form("qa_form"):
user_query = st.text_input("Enter your question here:")
submit_button = st.form_submit_button('Get Answer')
if submit_button and user_query:
answer = handle_query(user_query)
st.write(answer)
elif submit_button and not user_query:
st.error("Please enter a question to get an answer.")
def handle_query(query):
"""Retrieve answers based on the query."""
answer = retrieve_documents(query)
return answer
if __name__ == "__main__":
main()
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