src/streamlit_app/home_page.py

import streamlit as st
from streamlit_app import model
from utils import logger

if "messages" not in st.session_state:
    st.session_state.messages = []

def page_config():
     st.set_page_config(page_title="Physio Assist", layout="wide")
     logger.log("info","Configuring the page layout and title")

def page_title():
    st.title("🏋️‍♂️🧑‍⚕️ Welcome to Physio Assist: Your Physical Therapy Companion")
    logger.log("info", "Setting the title to 'Physio Assist: Your Physical Therapy Companion'")

def get_or_greet_user_name():
    if 'user_name' not in st.session_state:
        st.session_state.user_name = None
        logger.log("info","user_name not found in session_state, setting to None.")

    if st.session_state.user_name is None:
        logger.log("info","user_name is None, requesting user input.")
        user_name = st.text_input("Please let me know your name:",
                              placeholder="Enter your name buddy")
        if user_name:
            st.session_state.user_name = user_name
            logger.log("info", f"User entered name: {user_name}. Setting session_state.user_name.")
            st.rerun()
    else:
        logger.log("info", f"User already entered a name: {st.session_state.user_name}. Displaying greeting.")
        return st._bottom.subheader(f"Hello {st.session_state.user_name}! How can I assist you today?")

def display_chat():
    logger.log("info","Displaying the chat history.")
    for message in st.session_state.messages:
        with st.chat_message(message["role"]):
            st.markdown(message["content"])
        logger.log("info", f"Displayed {len(st.session_state.messages)} messages from the chat history.")

def handle_user_input():
    logger.log("info", "Waiting for user input...")
    prompt = st.chat_input("Ask me anything related to physiotherapy. E.g., 'How can I recover from a sprained ankle?'")

    if prompt :
        with st.chat_message("user"):
            st.markdown(prompt)
    if prompt:
        st.session_state.messages.append({"role": "user", "content": prompt})

        with st.spinner("Processing your query..."):
            try:
                response = model.get_physiotherapy_assistant_response(prompt)
                with st.chat_message("assistant"):
                    st.markdown(response)
                st.session_state.messages.append({"role": "assistant", "content": response})
                logger.log("info",f"Assistant response: {response}")
            except Exception as e:
                st.error(f"An error occurred while processing your query: {str(e)}")
                logger.log("error", f"Error processing user query: {str(e)}")