#!/usr/bin/env python3
"""
Deployment readiness check for Atlas analytics system
"""
import asyncio
import os
import sys
from dotenv import load_dotenv

load_dotenv()

async def check_environment_variables():
    """Check if all required environment variables are set"""
    print("🔍 Environment Variables Check")
    print("=" * 40)
    
    required_vars = {
        "GOOGLE_API_KEY": "Google Gemini API",
        "BRAVE_API_KEY": "Brave Search API", 
        "MONGODB_URL": "MongoDB Atlas connection",
        "MONGODB_DATABASE": "MongoDB database name"
    }
    
    all_set = True
    for var, description in required_vars.items():
        value = os.getenv(var)
        if value:
            print(f"✅ {var}: Set ({description})")
        else:
            print(f"❌ {var}: Missing ({description})")
            all_set = False
    
    return all_set

async def check_database_connection():
    """Check MongoDB connection"""
    print("\n🗄️  Database Connection Check")
    print("=" * 40)
    
    try:
        from analytics.database import test_connection
        connected = await test_connection()
        
        if connected:
            print("✅ MongoDB connection successful")
            return True
        else:
            print("❌ MongoDB connection failed")
            return False
            
    except Exception as e:
        print(f"❌ Database connection error: {e}")
        return False

async def check_analytics_system():
    """Check analytics system functionality"""
    print("\n📊 Analytics System Check")
    print("=" * 40)
    
    try:
        # Test dashboard
        from analytics.dashboard import get_basic_stats
        stats = await get_basic_stats()
        
        if "error" in stats:
            print(f"❌ Dashboard error: {stats['error']}")
            return False
        else:
            print("✅ Dashboard working")
            print(f"   Sessions: {stats.get('total_sessions', 0)}")
            print(f"   Messages: {stats.get('total_messages', 0)}")
            
        # Test collectors
        from analytics.collectors import create_session
        test_session = await create_session(user_agent="Deployment Test")
        
        if test_session:
            print("✅ Session creation working")
        else:
            print("❌ Session creation failed")
            return False
            
        return True
        
    except Exception as e:
        print(f"❌ Analytics system error: {e}")
        return False

async def check_dependencies():
    """Check if all required packages are available"""
    print("\n📦 Dependencies Check")
    print("=" * 40)
    
    required_packages = [
        ("fastapi", "FastAPI web framework"),
        ("motor", "MongoDB async driver"),
        ("google.generativeai", "Google Gemini API"),
        ("httpx", "HTTP client"),
        ("pydantic", "Data validation"),
        ("dotenv", "Environment variables")
    ]
    
    all_available = True
    for package, description in required_packages:
        try:
            __import__(package.replace("-", "_"))
            print(f"✅ {package}: Available ({description})")
        except ImportError:
            print(f"❌ {package}: Missing ({description})")
            all_available = False
    
    return all_available

async def main():
    """Run all deployment checks"""
    print("🚀 Atlas Analytics Deployment Check")
    print("=" * 50)
    
    checks = [
        ("Environment Variables", check_environment_variables()),
        ("Dependencies", check_dependencies()),
        ("Database Connection", check_database_connection()),
        ("Analytics System", check_analytics_system())
    ]
    
    results = []
    for name, check_coro in checks:
        try:
            result = await check_coro
            results.append((name, result))
        except Exception as e:
            print(f"❌ {name} check failed: {e}")
            results.append((name, False))
    
    # Summary
    print("\n📋 Deployment Readiness Summary")
    print("=" * 50)
    
    all_passed = True
    for name, passed in results:
        status = "✅ PASS" if passed else "❌ FAIL"
        print(f"{status} {name}")
        if not passed:
            all_passed = False
    
    print("\n" + "=" * 50)
    if all_passed:
        print("🎉 DEPLOYMENT READY: All checks passed!")
        print("   You can deploy the Atlas analytics system.")
        sys.exit(0)
    else:
        print("⚠️  DEPLOYMENT NOT READY: Some checks failed.")
        print("   Please fix the issues above before deploying.")
        sys.exit(1)

if __name__ == "__main__":
    asyncio.run(main())