app.py

import streamlit as st
from query_graph import query_graph

# Sidebar configuration
st.sidebar.title("About")
st.sidebar.markdown("**Authors:** [The SIGHT Project Team](https://sites.miamioh.edu/sight/)")
st.sidebar.markdown("**Version:** V. 0.0.1")
st.sidebar.markdown("**Date:** July 24, 2025")
st.sidebar.markdown("**Model:** gpt4o")

st.sidebar.markdown("---")
st.sidebar.markdown(
    "**Funding:** SIGHT is funded by [OHBWC WSIC](https://info.bwc.ohio.gov/for-employers/safety-services/workplace-safety-innovation-center/wsic-overview)"
)

# References toggle in sidebar
st.sidebar.markdown("---")
show_refs = st.sidebar.checkbox("Show references")



# Main interface
st.set_page_config(page_title="Miami University's SIGHT Chatbot")
st.title("Chat with SIGHT")
st.write("Ask questions about machine safeguarding, LOTO, and hazard prevention based on OSHA/CFR's corpus.")

# Example questions toggled in main window
with st.expander("Example Questions", expanded=False):
    st.markdown(
        "- What are general machine guarding requirements?  \n"
        "- How do I perform lockout/tagout?  \n"
        "- Summarize the definition of machine guarding from 29 CFR 1910.211"
    )

# Initialize chat history
if 'history' not in st.session_state:
    st.session_state.history = []

# User input
query = st.text_input("Your question:")
if st.button("Send") and query:
    answer, sources = query_graph(query)
    st.session_state.history.append({
        'query': query,
        'answer': answer,
        'sources': sources
    })

# Display chat history
for i, entry in enumerate(st.session_state.history):
    st.markdown(f"**You:** {entry['query']}")
    st.markdown(f"**Assistant:** {entry['answer']}")
    # Explanations expander
    with st.expander("Sources used", expanded=False):
        for src in entry['sources']:
            st.markdown(f"- {src}")

# Optionally show references list
if show_refs:
    refs = [
        "29 CFR 1910.211", "29 CFR 1910.212", "29 CFR 1910.213", "29 CFR 1910.215",
        "OSHA 3170", "OSHA 3120", "NIOSH WP Solutions 2011-156", "NIOSH Robotics (2024)"
    ]
    for r in refs:
        st.sidebar.markdown(f"- {r}")

# Footer
st.markdown("---")
st.markdown(
    "**Disclaimer:** *Powered by a Graph RAG to reduce hallucinations; please verify as it can still make mistakes.*"
    )
st.markdown(
    "**Funding:** *We are thankful for [Ohio BWC/WSIC](https://info.bwc.ohio.gov/for-employers/safety-services/workplace-safety-innovation-center/wsic-overview)'s funding that made this chat bot possible.*"
    )