#!/usr/bin/env python3
"""
Simple script to get Google Drive refresh token
"""

import os
import json
from google.oauth2.credentials import Credentials
from google_auth_oauthlib.flow import InstalledAppFlow
from google.auth.transport.requests import Request

def get_refresh_token():
    """Get refresh token for Google Drive"""
    print("🔐 Getting Google Drive Refresh Token...")
    print("This will open your browser for authentication")
    print()
    
    try:
        SCOPES = ['https://www.googleapis.com/auth/drive.file']
        creds = None
        
        # Check if token.json exists
        if os.path.exists('token.json'):
            print("📁 Found existing token.json")
            creds = Credentials.from_authorized_user_file('token.json', SCOPES)
        
        # If no valid credentials, request authorization
        if not creds or not creds.valid:
            if creds and creds.expired and creds.refresh_token:
                print("🔄 Refreshing expired token...")
                creds.refresh(Request())
            else:
                print("🌐 Opening browser for authentication...")
                flow = InstalledAppFlow.from_client_secrets_file(
                    'credentials.json', SCOPES)
                creds = flow.run_local_server(port=8080, open_browser=True)
            
            # Save credentials for next run
            with open('token.json', 'w') as token:
                token.write(creds.to_json())
            print("💾 Token saved to token.json")
        
        # Extract refresh token
        refresh_token = creds.refresh_token
        
        if refresh_token:
            print("\n✅ SUCCESS! Refresh token obtained!")
            print(f"🔑 GOOGLE_REFRESH_TOKEN = {refresh_token}")
            
            # Also show client info
            with open('credentials.json', 'r') as f:
                creds_data = json.load(f)
            
            if 'web' in creds_data:
                client_id = creds_data['web']['client_id']
                client_secret = creds_data['web']['client_secret']
                
                print("\n📋 Add these 3 secrets to your HF Space:")
                print(f"GOOGLE_CLIENT_ID = {client_id}")
                print(f"GOOGLE_CLIENT_SECRET = {client_secret}")
                print(f"GOOGLE_REFRESH_TOKEN = {refresh_token}")
                
                print("\n🌐 Next steps:")
                print("1. Go to: https://huggingface.co/spaces/NLong/FakeNews_Detector")
                print("2. Click 'Settings' tab")
                print("3. Add the 3 secrets above")
                print("4. Your app will use Google Drive for RAG storage!")
            
            return refresh_token
        else:
            print("❌ No refresh token found")
            return None
            
    except Exception as e:
        print(f"❌ Error: {e}")
        return None

if __name__ == "__main__":
    get_refresh_token()