"""
Updated diagnostics module for the Pharmaceutical Analytics application.
"""

import streamlit as st
import os
import json
import traceback
import time
from datetime import datetime
from typing import Dict, Any, Tuple

def test_claude_connectivity() -> Tuple[bool, str]:
    """
    Test basic connectivity to Claude API
    
    Returns:
        Tuple of (success_flag, response_or_error)
    """
    try:
        # Check API key
        api_key = os.getenv("ANTHROPIC_API_KEY")
        if not api_key:
            return False, "No ANTHROPIC_API_KEY found in environment variables"
        
        # Import anthropic
        try:
            import anthropic
        except ImportError:
            return False, "Failed to import anthropic library. Make sure it's installed (pip install anthropic)"
        
        # Create client and send request
        client = anthropic.Anthropic(api_key=api_key)
        
        response = client.messages.create(
            model="claude-3-haiku-20240307",
            max_tokens=300,
            messages=[
                {"role": "user", "content": "Briefly tell me about Egyptian history in 2-3 sentences."}
            ]
        )
        
        if response and response.content:
            return True, response.content[0].text
        else:
            return False, "Received empty response from Anthropic API"
        
    except Exception as e:
        error_msg = f"Error testing Claude API: {str(e)}\n\n{traceback.format_exc()}"
        return False, error_msg

def render_diagnostics_tab():
    """
    Render the diagnostics tab in the Streamlit app
    """
    st.header("🔧 System Diagnostics")
    
    # Environment information
    st.subheader("Environment Information")
    
    # Check API key
    api_key = os.getenv("ANTHROPIC_API_KEY")
    api_status = "✅ Set" if api_key else "❌ Not Set"
    
    environment_data = {
        "API Key": api_status,
        "Python Version": os.sys.version,
        "Timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S"),
    }
    
    # Try to get library versions
    try:
        import anthropic
        environment_data["Anthropic Library"] = anthropic.__version__
    except (ImportError, AttributeError):
        environment_data["Anthropic Library"] = "Not found"
    
    try:
        import langgraph
        environment_data["LangGraph Library"] = langgraph.__version__
    except (ImportError, AttributeError):
        environment_data["LangGraph Library"] = "Not found"
    
    # Display environment table
    for key, value in environment_data.items():
        cols = st.columns([1, 3])
        with cols[0]:
            st.markdown(f"**{key}:**")
        with cols[1]:
            st.markdown(f"{value}")
    
    # Claude connectivity test
    st.subheader("Claude LLM Test")
    if st.button("Test Claude Connectivity"):
        with st.spinner("Testing connection to Claude..."):
            success, response = test_claude_connectivity()
        
        if success:
            st.success("✅ Claude API is working properly!")
            st.markdown("**Response:**")
            st.info(response)
        else:
            st.error("❌ Claude API test failed")
            st.expander("Error Details", expanded=True).error(response)
    
    # Agent functionality test (simplified)
    st.subheader("Agent Functionality Test")
    if st.button("Test Planning Agent"):
        with st.spinner("Testing Planning Agent..."):
            try:
                from agents.planning_agent import PlanningAgent
                planning_agent = PlanningAgent()
                test_alert = "Sales of DrugX down 15% in Northeast region over past 30 days."
                analysis_plan, plan_dict = planning_agent.create_analysis_plan(test_alert)
                
                st.success("✅ Planning Agent is working properly!")
                st.json(plan_dict)
            except Exception as e:
                st.error("❌ Planning Agent test failed")
                st.expander("Error Details", expanded=True).error(f"{str(e)}\n\n{traceback.format_exc()}")
    
    # Database Connectivity
    st.subheader("Database Connectivity")
    if st.button("Test Database Connection"):
        with st.spinner("Testing database connection..."):
            try:
                import sqlite3
                conn = sqlite3.connect("data/pharma_db.sqlite")
                
                # Test query
                cursor = conn.cursor()
                cursor.execute("SELECT name FROM sqlite_master WHERE type='table'")
                tables = cursor.fetchall()
                
                # Close connection
                conn.close()
                
                st.success(f"✅ Successfully connected to database")
                st.write(f"Found {len(tables)} tables:")
                st.json([table[0] for table in tables])
                
            except Exception as e:
                st.error(f"❌ Database connection failed: {str(e)}")
                st.expander("Error Details", expanded=True).error(traceback.format_exc())
    
    # Add guidance
    st.markdown("---")
    st.markdown("""
    ### Troubleshooting Tips
    
    1. If Claude test fails:
       - Check your API key in environment variables
       - Verify internet connectivity
       - Confirm your API key has sufficient credits
    
    2. If Agent test fails:
       - Check import errors (are all libraries installed?)
       - Verify agent implementation
       - Check for syntax errors in agent code
    
    3. If Database test fails:
       - Verify database file exists
       - Check file permissions
       - Run setup_environment() function again
    """)