#!/usr/bin/env python3
import json

from google.oauth2.credentials import Credentials
from google.auth.transport.requests import Request
from googleapiclient.discovery import build

def get_youtube_service():
    """Get the YouTube service using the loaded credentials."""
    try:
        with open('secrets.json', 'r') as f:
            creds_data = json.load(f)
                
        credentials = Credentials(
            token=creds_data['token'],
            refresh_token=creds_data['refresh_token'],
            token_uri=creds_data['token_uri'],
            client_id=creds_data['client_id'],
            client_secret=creds_data['client_secret'],
            scopes=creds_data['scopes']
        )
            
        # Refresh token if expired
        if credentials.expired:
            credentials.refresh(Request())
                
    except FileNotFoundError:
        print("Error: secrets.json not found! Please run setup.py first.")
        return None
    except Exception as e:
        print(f"Error loading credentials: {str(e)}")
        return None
    
    if credentials is None:
        print("Error: Credentials not loaded. Please check secrets.json.")
        return None
    
    try:
        youtube_service = build('youtube', 'v3', credentials=credentials)
        return youtube_service
    except Exception as e:
        print(f"Error creating YouTube service: {str(e)}")
        return None