app.py

import streamlit as st
import time
from datetime import datetime
from chatbot import FAQChatbot

# ------------------ Page Settings ------------------

st.set_page_config(
    page_title="StudyBuddy FAQ Chatbot",
    page_icon="🤖",
    layout="centered"
)

# ------------------ Load Chatbot ------------------

bot = FAQChatbot("faq.json")

# ------------------ Session State ------------------

if "messages" not in st.session_state:
    st.session_state.messages = [
        {
            "role": "assistant",
            "content": "👋 Hello! I'm your StudyBuddy Assistant.\n\nAsk me anything related to StudyBuddy!"
        }
    ]

# ------------------ Title ------------------

st.title("🤖 StudyBuddy FAQ Chatbot")

st.write(
    "This chatbot answers frequently asked questions related to StudyBuddy."
)

st.info(
"""
### 💡 Try asking

• What is StudyBuddy?

• How do I create a study plan?

• Can I chat with the AI?

• Does StudyBuddy work offline?

• Who made you?
"""
)

# ------------------ Sidebar ------------------

with st.sidebar:

    st.header("📚 StudyBuddy")

    st.success("🟢 Online")

    st.write("### Frequently Asked Questions")

    with st.expander("Click to view FAQs"):

        for question in bot.get_questions():
            st.markdown(f"• {question}")

    st.divider()

    st.subheader("📊 Chat Statistics")

    st.metric(
        "Messages",
        len(st.session_state.messages)
    )

    st.metric(
        "Available FAQs",
        len(bot.get_questions())
    )

    st.divider()

    if st.button("🗑 Clear Chat"):

        st.session_state.messages = [
            {
                "role": "assistant",
                "content": "👋 Hello! I'm your StudyBuddy Assistant.\n\nAsk me anything related to StudyBuddy!"
            }
        ]

        st.rerun()

# ------------------ Display Chat ------------------

for msg in st.session_state.messages:

    with st.chat_message(msg["role"]):

        st.markdown(msg["content"])

        if "time" in msg:
            st.caption(msg["time"])

# ------------------ User Input ------------------

question = st.chat_input("Type your question here...")

if question:

    st.session_state.messages.append(
        {
            "role": "user",
            "content": question,
            "time": datetime.now().strftime("%I:%M %p")
        }
    )

    with st.chat_message("user"):

        st.markdown(question)

        st.caption(datetime.now().strftime("%I:%M %p"))

    with st.chat_message("assistant"):

        loading = st.empty()

        loading.markdown("🤖 *Typing...*")

        time.sleep(1)
        try:

            reply = bot.get_response(question)

        except Exception:

            reply = "Sorry! Something went wrong. Please try again."

        loading.markdown(reply)

        current_time = datetime.now().strftime("%I:%M %p")

        st.caption(current_time)

    st.session_state.messages.append(
        {
            "role": "assistant",
            "content": reply,
            "time": current_time
        }
    )

# ------------------ Footer ------------------

st.markdown(
    """
    <style>

    .footer{
        position:fixed;
        bottom:12px;
        right:18px;
        color:gray;
        font-size:13px;
        opacity:0.8;
    }

    </style>

    <div class="footer">
        ❤️ Made by Harsh Garg
    </div>

    """,
    unsafe_allow_html=True
)