def main_app():
    st.sidebar.success(f"Logged in as {st.session_state.email}")
    if st.sidebar.button("Logout"):
        logout()
        st.experimental_rerun()

    # Feedback inputs on left sidebar
    st.sidebar.markdown("---")
    st.sidebar.subheader("📝 Give Feedback")
    feedback_text = st.sidebar.text_area("Your thoughts about this place", height=100)
    feedback_image = st.sidebar.file_uploader("Upload an image", type=["jpg", "jpeg", "png"], key="image_upload")
    feedback_audio = st.sidebar.file_uploader("Upload audio", type=["mp3", "wav", "m4a"], key="audio_upload")
    feedback_video = st.sidebar.file_uploader("Upload video", type=["mp4", "mov", "avi"], key="video_upload")

    if feedback_image:
        st.sidebar.image(feedback_image, caption="Your uploaded image", use_container_width=True)
    if feedback_audio:
        st.sidebar.audio(feedback_audio, format=feedback_audio.type)
    if feedback_video:
        st.sidebar.video(feedback_video)

    st.title("📚 Gyana Vedika - Cultural Explorer")
    state = st.selectbox("Select State", list(STATES.keys()))
    district = st.selectbox("Select District", STATES[state])
    st.subheader(f"Explore {district}, {state}")

    uploaded_image = st.file_uploader("Upload a cultural/historical place image", type=["png", "jpg", "jpeg"], key="place_image")
    place_to_search = None
    if uploaded_image:
        st.image(uploaded_image, caption="Uploaded Image", use_container_width=True)
        filename = uploaded_image.name.lower()
        keywords_map = {
            "charminar": "Charminar", "golconda": "Golconda Fort", "qutubshahi": "Qutb Shahi Tombs",
            "birla": "Birla Mandir", "salarjung": "Salar Jung Museum", "warangal": "Warangal Fort",
            "ramappa": "Ramappa Temple", "bhadrakali": "Bhadra Kali Temple", "kakatiya": "Kakatiya Kala Thoranam",
            "pakhal": "Pakhal Lake", "medak": "Medak Cathedral", "nagarjuna": "Nagarjuna Sagar Dam",
            "taj": "Taj Mahal", "gateway": "Gateway of India", "qutub": "Qutub Minar",
            "mysore": "Mysore Palace", "hampi": "Hampi", "konark": "Konark Sun Temple",
            "varanasi": "Varanasi", "madurai": "Meenakshi Temple", "ajanta": "Ajanta Caves", "ellora": "Ellora Caves"
        }
        for kw, place in keywords_map.items():
            if kw in filename:
                place_to_search = place
                st.success(f"Recognized Place: {place_to_search}")
                break
        if not place_to_search:
            st.warning("Could not recognize place. Try renaming the image file with landmark name.")

    manual_place = st.text_input("Or manually enter place name to search info")
    if manual_place.strip():
        place_to_search = manual_place.strip()

    if place_to_search:
        language = st.selectbox("Select Wikipedia summary language", ["English", "Hindi", "Telugu", "Tamil", "Marathi", "Bengali"])
        lang_codes = {"English": "en", "Hindi": "hi", "Telugu": "te", "Tamil": "ta", "Marathi": "mr", "Bengali": "bn"}
        lang_code = lang_codes.get(language, "en")
        if st.button(f"Get info about {place_to_search}"):
            with st.spinner(f"Fetching Wikipedia summary for {place_to_search}..."):
                summary = fetch_wikipedia_summary(place_to_search, lang=lang_code)
                st.markdown(f"### Summary of {place_to_search}")
                st.write(summary)

    if st.sidebar.button("Submit Feedback"):
        if feedback_text.strip() or feedback_image or feedback_audio or feedback_video:
            img_path = save_temp_file(feedback_image, "img")
            audio_path = save_temp_file(feedback_audio, "audio")
            video_path = save_temp_file(feedback_video, "video")
            save_feedback(
                email=st.session_state.email,
                place=place_to_search or "Unknown",
                state=state,
                district=district,
                text=feedback_text.strip(),
                img_path=img_path,
                audio_path=audio_path,
                video_path=video_path
            )
            st.sidebar.success("Thank you! Feedback submitted.")
        else:
            st.sidebar.warning("Please provide feedback text or upload a file.")