"""Verify that the project setup is complete and correct."""

import os
import sys
from pathlib import Path

def check_file(filepath, required=True):
    """Check if a file exists."""
    if os.path.exists(filepath):
        print(f"✅ {filepath}")
        return True
    else:
        status = "❌" if required else "⚠️"
        print(f"{status} {filepath} {'(REQUIRED)' if required else '(optional)'}")
        return not required

def check_env_vars():
    """Check if .env file has required variables."""
    if not os.path.exists('.env'):
        print("❌ .env file not found!")
        return False
    
    required_vars = ['GEMINI_API_KEY', 'SERPAPI_API_KEY']
    optional_vars = ['TELEGRAM_BOT_TOKEN', 'WHATSAPP_ACCESS_TOKEN']
    
    with open('.env', 'r') as f:
        content = f.read()
    
    print("\n📝 Environment Variables:")
    all_good = True
    
    for var in required_vars:
        if var in content and 'your_' not in content.split(var)[1].split('\n')[0]:
            print(f"✅ {var} is set")
        else:
            print(f"❌ {var} is NOT set (REQUIRED)")
            all_good = False
    
    for var in optional_vars:
        if var in content and 'your_' not in content.split(var)[1].split('\n')[0]:
            print(f"✅ {var} is set")
        else:
            print(f"⚠️  {var} is not set (optional)")
    
    return all_good

def check_dependencies():
    """Check if key dependencies are installed."""
    print("\n📦 Dependencies:")
    
    deps = {
        'fastapi': True,
        'uvicorn': True,
        'gradio': True,
        'langchain': True,
        'google.generativeai': True,
        'telegram': False,
        'serpapi': True,
    }
    
    all_good = True
    for dep, required in deps.items():
        try:
            __import__(dep)
            print(f"✅ {dep}")
        except ImportError:
            status = "❌" if required else "⚠️"
            print(f"{status} {dep} {'(REQUIRED)' if required else '(optional)'}")
            if required:
                all_good = False
    
    return all_good

def main():
    """Run all verification checks."""
    print("="*60)
    print("🔍 Rural E-commerce Bot - Setup Verification")
    print("="*60 + "\n")
    
    print("📂 Core Files:")
    files_ok = all([
        check_file('api.py'),
        check_file('agent.py'),
        check_file('database.py'),
        check_file('tools.py'),
        check_file('config.py'),
        check_file('main.py'),
        check_file('gradio_ui.py'),
        check_file('requirements.txt'),
        check_file('.env'),
    ])
    
    print("\n📂 Channel Handlers:")
    handlers_ok = all([
        check_file('channels/whatsapp_handler.py'),
        check_file('channels/telegram_handler.py'),
    ])
    
    print("\n📂 Utilities:")
    utils_ok = all([
        check_file('utils/error_handler.py'),
        check_file('scripts/setup.py'),
    ])
    
    print("\n📂 Documentation:")
    docs_ok = all([
        check_file('README.md'),
        check_file('QUICKSTART.md'),
        check_file('DEPLOYMENT.md'),
        check_file('PROJECT_SUMMARY.md'),
    ])
    
    print("\n📂 Tests:")
    tests_ok = check_file('tests/test_agent.py')
    
    env_ok = check_env_vars()
    deps_ok = check_dependencies()
    
    print("\n" + "="*60)
    print("📊 Verification Summary")
    print("="*60)
    
    results = {
        "Core Files": files_ok,
        "Channel Handlers": handlers_ok,
        "Utilities": utils_ok,
        "Documentation": docs_ok,
        "Tests": tests_ok,
        "Environment Variables": env_ok,
        "Dependencies": deps_ok,
    }
    
    for category, status in results.items():
        icon = "✅" if status else "❌"
        print(f"{icon} {category}")
    
    all_ok = all(results.values())
    
    print("\n" + "="*60)
    if all_ok:
        print("🎉 All checks passed! Your setup is complete.")
        print("="*60)
        print("\n🚀 Next steps:")
        print("1. Run: python main.py --mode all")
        print("2. Open: http://localhost:7860")
        print("3. Test with: 'I need a mobile under ₹5000'")
        print("\n✨ Happy coding!\n")
        return 0
    else:
        print("⚠️  Some checks failed. Please fix the issues above.")
        print("="*60)
        print("\n💡 Quick fixes:")
        print("- Missing files: Check if you're in the right directory")
        print("- .env not set: Run 'python scripts/setup.py'")
        print("- Dependencies: Run 'pip install -r requirements.txt'")
        print()
        return 1

if __name__ == "__main__":
    sys.exit(main())