import os
import json
import tempfile
from pathlib import Path

def setup_credentials():
    """Setup Google credentials from Hugging Face secrets"""
    
    # Get credentials JSON from environment variable
    creds_json = os.getenv('GOOGLE_APPLICATION_CREDENTIALS_JSON')
    
    if creds_json:
        # Create a temporary file for credentials
        temp_dir = tempfile.gettempdir()
        creds_path = os.path.join(temp_dir, 'google_credentials.json')
        
        # Write credentials to file
        with open(creds_path, 'w') as f:
            # Handle both string and already-parsed JSON
            if isinstance(creds_json, str):
                try:
                    # Try to parse if it's a JSON string
                    json_data = json.loads(creds_json)
                    json.dump(json_data, f)
                except json.JSONDecodeError:
                    # If it's not valid JSON, write as-is
                    f.write(creds_json)
            else:
                json.dump(creds_json, f)
        
        # Set environment variable to point to the file
        os.environ['GOOGLE_APPLICATION_CREDENTIALS'] = creds_path
        print(f"✅ Google credentials setup complete at: {creds_path}")
        return creds_path
    else:
        print("⚠️ Warning: GOOGLE_APPLICATION_CREDENTIALS_JSON not found in environment")
        return None

# Run setup when module is imported
setup_credentials()