app.py

import streamlit as st
import time
import os
import sys
from datetime import datetime
from pathlib import Path
sys.path.append(str(Path(__file__).parent))

from utils.config import config
from core.llm import send_to_ollama, send_to_hf
from core.session import session_manager
from core.memory import check_redis_health
import logging

# Set up logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

st.set_page_config(page_title="AI Life Coach", page_icon="🧠", layout="wide")

# Initialize session state
if "messages" not in st.session_state:
    st.session_state.messages = []
if "last_error" not in st.session_state:
    st.session_state.last_error = ""
if "is_processing" not in st.session_state:
    st.session_state.is_processing = False
if "ngrok_url_temp" not in st.session_state:
    st.session_state.ngrok_url_temp = st.session_state.get("ngrok_url", "https://7bcc180dffd1.ngrok-free.app")

# Sidebar
with st.sidebar:
    st.title("AI Life Coach 🧠")
    st.markdown("Your personal AI-powered life development assistant")
    
    # Model selection
    model_options = {
        "Mistral 7B (Local)": "mistral:latest",
        "Llama 2 7B (Local)": "llama2:latest",
        "OpenChat 3.5 (Local)": "openchat:latest"
    }
    selected_model_name = st.selectbox(
        "Select Model",
        options=list(model_options.keys()),
        index=0
    )
    st.session_state.selected_model = model_options[selected_model_name]
    
    # Ollama URL input
    st.subheader("Ollama Configuration")
    ngrok_url_input = st.text_input(
        "Ollama Server URL",
        value=st.session_state.ngrok_url_temp,
        help="Enter your ngrok URL",
        key="ngrok_url_input"
    )
    
    if ngrok_url_input != st.session_state.ngrok_url_temp:
        st.session_state.ngrok_url_temp = ngrok_url_input
        st.success("✅ URL updated!")
    
    # Test connection button
    if st.button("📡 Test Connection"):
        try:
            import requests
            headers = {
                "ngrok-skip-browser-warning": "true",
                "User-Agent": "AI-Life-Coach-Test"
            }
            with st.spinner("Testing connection..."):
                response = requests.get(
                    f"{ngrok_url_input}/api/tags",
                    headers=headers,
                    timeout=15
                )
                if response.status_code == 200:
                    st.success("✅ Connection successful!")
                else:
                    st.error(f"❌ Failed: {response.status_code}")
        except Exception as e:
            st.error(f"❌ Error: {str(e)[:50]}...")
    
    # Conversation history
    st.subheader("Conversation History")
    if st.button("🗑️ Clear History"):
        st.session_state.messages = []
        st.success("History cleared!")
    
    if st.session_state.messages:
        user_msgs = len([m for m in st.session_state.messages if m["role"] == "user"])
        ai_msgs = len([m for m in st.session_state.messages if m["role"] == "assistant"])
        st.caption(f"💬 {user_msgs} user, {ai_msgs} AI messages")
    
    # Advanced Debug Panel (now properly collapsible)
    with st.expander("🔍 System Monitor", expanded=False):
        st.subheader("📊 Status")
        
        # Ollama Status
        try:
            from services.ollama_monitor import check_ollama_status
            ollama_status = check_ollama_status()
            if ollama_status.get("running"):
                st.success("🦙 Ollama: Running")
            else:
                st.warning("🦙 Ollama: Not running")
        except:
            st.info("🦙 Ollama: Unknown")
        
        # HF Status
        try:
            from services.hf_endpoint_monitor import hf_monitor
            hf_status = hf_monitor.check_endpoint_status()
            if hf_status['available']:
                st.success("🤗 HF: Available")
            else:
                st.warning("🤗 HF: Not available")
        except:
            st.info("🤗 HF: Unknown")
        
        # Redis Status
        if check_redis_health():
            st.success("💾 Redis: Connected")
        else:
            st.error("💾 Redis: Disconnected")

# Main interface
st.title("🧠 AI Life Coach")
st.markdown("Ask me anything about personal development, goal setting, or life advice!")

# Display messages
for message in st.session_state.messages:
    with st.chat_message(message["role"]):
        st.markdown(message["content"])
        if "timestamp" in message:
            st.caption(f"🕒 {message['timestamp']}")

# Chat input - FIXED VERSION
user_input = st.chat_input("Type your message here...", disabled=st.session_state.is_processing)

# Process message when received
if user_input and not st.session_state.is_processing:
    st.session_state.is_processing = True
    
    # Display user message
    with st.chat_message("user"):
        st.markdown(user_input)
    
    st.session_state.messages.append({
        "role": "user",
        "content": user_input,
        "timestamp": datetime.now().strftime("%H:%M:%S")
    })
    
    # Process AI response
    with st.chat_message("assistant"):
        response_placeholder = st.empty()
        status_placeholder = st.empty()
        
        try:
            # Get conversation history
            user_session = session_manager.get_session("default_user")
            conversation = user_session.get("conversation", [])
            conversation_history = conversation[-5:]  # Last 5 messages
            conversation_history.append({"role": "user", "content": user_input})
            
            # Try Ollama with proper error handling
            status_placeholder.info("🦙 Contacting Ollama...")
            ai_response = None
            
            try:
                ai_response = send_to_ollama(
                    user_input,
                    conversation_history,
                    st.session_state.ngrok_url_temp,
                    st.session_state.selected_model
                )
                
                if ai_response:
                    response_placeholder.markdown(ai_response)
                    status_placeholder.success("✅ Response received!")
                else:
                    status_placeholder.warning("⚠️ Empty response from Ollama")
                    
            except Exception as ollama_error:
                status_placeholder.error(f"❌ Ollama error: {str(ollama_error)[:50]}...")
                
                # Fallback to HF if available
                if config.hf_token:
                    status_placeholder.info("🔄 Trying Hugging Face...")
                    try:
                        ai_response = send_to_hf(user_input, conversation_history)
                        if ai_response:
                            response_placeholder.markdown(ai_response)
                            status_placeholder.success("✅ HF response received!")
                        else:
                            status_placeholder.error("❌ No response from HF")
                    except Exception as hf_error:
                        status_placeholder.error(f"❌ HF also failed: {str(hf_error)[:50]}...")
            
            # Save response if successful
            if ai_response:
                # Update conversation history
                conversation.append({"role": "user", "content": user_input})
                conversation.append({"role": "assistant", "content": ai_response})
                user_session["conversation"] = conversation
                session_manager.update_session("default_user", user_session)
                
                # Add to message history
                st.session_state.messages.append({
                    "role": "assistant",
                    "content": ai_response,
                    "timestamp": datetime.now().strftime("%H:%M:%S")
                })
            else:
                st.session_state.messages.append({
                    "role": "assistant",
                    "content": "Sorry, I couldn't process your request. Please try again.",
                    "timestamp": datetime.now().strftime("%H:%M:%S")
                })
                
        except Exception as e:
            error_msg = f"System error: {str(e)}"
            response_placeholder.error(error_msg)
            st.session_state.messages.append({
                "role": "assistant",
                "content": error_msg,
                "timestamp": datetime.now().strftime("%H:%M:%S")
            })
        finally:
            st.session_state.is_processing = False
            time.sleep(0.5)  # Brief pause
            st.experimental_rerun()