app.py

import streamlit as st
import json

# Load the JSON file once with caching
@st.cache_data
def load_data():
    with open("51940670-Manual-of-Surgical-Pathology-Third-Edition_1_structured_output.json", "r") as f:
        return json.load(f)

data = load_data()

st.title("📘 Surgical Pathology Manual - Page Summary & FAQ")

# Step 1: Get all page numbers where 'page' exists and is digit
page_numbers = sorted({
    int(entry["page"])
    for entry in data
    if "page" in entry and str(entry["page"]).isdigit()
})

# Step 2: User selects page
selected_page = st.selectbox("Select Page Number", page_numbers)

# Step 3: Filter entries by page
page_content = [
    entry for entry in data
    if str(entry.get("page", "")) == str(selected_page)
]

# Step 4: Display summary and FAQs
if page_content:
    for section in page_content:
        section_title = section.get("section_heading", "Untitled Section")
        summary = section.get("summary", None)
        faq = section.get("faq", [])

        st.markdown(f"### 🧠 Section: {section_title}")

        # Show summary
        if summary and isinstance(summary, str):
            st.markdown("#### 🔍 Summary")
            st.write(summary)
        else:
            st.info("No summary available for this section.")

        # Show FAQ
        if faq and isinstance(faq, list) and any("question" in q for q in faq):
            st.markdown("#### ❓ FAQ")
            for qna in faq:
                question = qna.get("question", "").strip()
                answer = qna.get("answer", "").strip()
                if question:
                    st.markdown(f"**Q:** {question}")
                    st.markdown(f"**A:** {answer if answer else '_No answer provided._'}")
        else:
            st.info("No FAQs available for this section.")
else:
    st.warning("No content found for the selected page.")