"""
Environment setup and dependency checking utilities
"""

import os
import sys
import subprocess
import torch
import gc
import warnings
import logging

warnings.filterwarnings('ignore')
logging.basicConfig(level=logging.INFO)

def setup_environment():
    """Setup the environment for optimal performance"""
    print("🔧 Setting up environment...")
    
    # Setup Hugging Face authentication
    print("🔐 Setting up Hugging Face authentication...")
    
    try:
        from google.colab import userdata
        HF_TOKEN = userdata.get('HF_TOKEN')
        if HF_TOKEN:
            print("✅ Token loaded from Colab secrets")
            from huggingface_hub import login
            login(token=HF_TOKEN)
            print("✅ Hugging Face authentication successful!")
        else:
            print("⚠️ No HF_TOKEN found in secrets - using public models only")
            print("💡 Add HF_TOKEN to secrets for access to more models")
    except Exception as e:
        print(f"⚠️ Authentication skipped: {str(e)}")
        print("🔄 Continuing with public models...")
    
    # Setup GPU if available
    if torch.cuda.is_available():
        torch.cuda.empty_cache()
        gc.collect()
        print(f"🔧 GPU Memory cleared and ready")
        print(f"🎯 GPU Available: {torch.cuda.get_device_name(0)}")
    else:
        print("⚠️ No GPU available, using CPU (will be slower)")
    
    print("✅ Environment setup complete!")

def check_dependencies():
    """Check if all required dependencies are available"""
    required_packages = [
        'torch', 'transformers', 'huggingface_hub', 
        'gradio', 'sympy', 'numpy'
    ]
    
    missing_packages = []
    
    for package in required_packages:
        try:
            __import__(package)
        except ImportError:
            missing_packages.append(package)
    
    if missing_packages:
        print(f"❌ Missing packages: {', '.join(missing_packages)}")
        return False
    
    print("✅ All dependencies available")
    return True