"""
Quick setup verification script
Run this to check if your environment is configured correctly
"""

import sys
import os
from pathlib import Path

def check_env_file():
    """Check if .env file exists and has required variables"""
    env_path = Path(__file__).parent / ".env"
    
    if not env_path.exists():
        print("❌ .env file not found!")
        print("   Create it by copying .env.example and adding your credentials")
        return False
    
    print("✅ .env file exists")
    
    # Read and check for required variables
    with open(env_path) as f:
        content = f.read()
    
    required_vars = {
        'OPENAI_API_KEY': 'OpenAI API key',
    }
    
    missing = []
    for var, description in required_vars.items():
        if var not in content:
            missing.append(f"   - {var} ({description})")
        elif f"{var}=your_" in content or f"{var}=" in content and len(content.split(f"{var}=")[1].split('\n')[0].strip()) < 10:
            print(f"⚠️  {var} appears to be a placeholder - please set your actual {description}")
            missing.append(f"   - {var} needs to be set")
    
    if missing:
        print("❌ Missing or invalid environment variables:")
        for m in missing:
            print(m)
        return False
    
    print("✅ Required environment variables are set")
    return True

def check_dependencies():
    """Check if required packages are installed"""
    required_packages = [
        'fastapi',
        'uvicorn',
        'openai',
        'qdrant_client',
        'sqlalchemy',
        'pydantic',
        'pydantic_settings'
    ]
    
    missing = []
    for package in required_packages:
        try:
            __import__(package.replace('-', '_'))
            print(f"✅ {package} installed")
        except ImportError:
            missing.append(package)
            print(f"❌ {package} not installed")
    
    if missing:
        print("\n❌ Missing packages. Install them with:")
        print("   pip install -r requirements.txt")
        return False
    
    return True

def check_openai_key():
    """Test if OpenAI API key is valid"""
    try:
        from app.config import settings
        
        if not settings.OPENAI_API_KEY or settings.OPENAI_API_KEY.startswith('your_'):
            print("❌ OPENAI_API_KEY is not set or is a placeholder")
            print("   Please set your actual OpenAI API key in .env file")
            return False
        
        print("✅ OPENAI_API_KEY is configured")
        print(f"   Key starts with: {settings.OPENAI_API_KEY[:10]}...")
        return True
        
    except Exception as e:
        print(f"❌ Error loading config: {e}")
        return False

def main():
    print("=" * 60)
    print("Backend Setup Verification")
    print("=" * 60)
    print()
    
    checks = [
        ("Environment File", check_env_file),
        ("Dependencies", check_dependencies),
        ("OpenAI Configuration", check_openai_key),
    ]
    
    results = []
    for name, check_func in checks:
        print(f"\n📋 Checking: {name}")
        print("-" * 60)
        try:
            result = check_func()
            results.append(result)
        except Exception as e:
            print(f"❌ Error during check: {e}")
            results.append(False)
    
    print("\n" + "=" * 60)
    if all(results):
        print("✅ All checks passed! You're ready to run the backend.")
        print("\nStart the server with:")
        print("   .\\run.bat")
        print("\nOr manually:")
        print("   .\\.venv\\Scripts\\activate")
        print("   uvicorn app.main:app --reload --host 0.0.0.0 --port 8000")
    else:
        print("❌ Some checks failed. Please fix the issues above.")
        print("\nQuick fixes:")
        print("1. Make sure .env file exists with your OpenAI API key")
        print("2. Install dependencies: pip install -r requirements.txt")
        print("3. Check SETUP_GUIDE.md for detailed instructions")
    print("=" * 60)

if __name__ == "__main__":
    main()