app.py

import streamlit as st
from transformers import AutoTokenizer, AutoModelForSeq2SeqLM

# Load the tokenizer and model
tokenizer = AutoTokenizer.from_pretrained("suriya7/bart-finetuned-text-summarization")
model = AutoModelForSeq2SeqLM.from_pretrained("suriya7/bart-finetuned-text-summarization")

def summarize_text(text):
    try:
        # Tokenize input with truncation to fit model requirements
        inputs = tokenizer([text], max_length=1024, return_tensors='pt', truncation=True)
        
        # Generate summary
        summary_ids = model.generate(inputs['input_ids'], max_length=150, num_beams=4, early_stopping=True)
        summary = tokenizer.decode(summary_ids[0], skip_special_tokens=True)
        
        return summary
    except Exception as e:
        st.error(f"An error occurred: {e}")
        return ""

# Initialize session state for input history if it doesn't exist
if 'input_history' not in st.session_state:
    st.session_state['input_history'] = []

# Streamlit interface
st.title("Text Summarizer")

# User text inputs
bulk_text = st.text_area("Enter the bulk text (e.g., client calls, meeting transcripts)", height=300)

if st.button("Summarize Text"):
    if bulk_text:
        with st.spinner("Generating summary..."):
            summary = summarize_text(bulk_text)
            
            if summary:
                # Save the input and summary to the session state history
                st.session_state['input_history'].append({"text": bulk_text, "summary": summary})
                st.subheader("Summary:")
                st.write(summary)
            else:
                st.warning("No summary was generated. Please check the input and try again.")
    else:
        st.warning("Please enter the bulk text.")

# Display the history of inputs and summaries
if st.session_state['input_history']:
    st.subheader("History")
    for i, entry in enumerate(st.session_state['input_history']):
        st.write(f"**Input {i+1} (Text):** {entry['text']}")
        st.write(f"**Summary {i+1}:** {entry['summary']}")
        st.write("---")

# Instructions for using the app
st.write("Enter your bulk text and click 'Summarize Text' to get a summary of the text.")