"""
YouTube 전용 OAuth2 토큰 발급 스크립트
credentials_youtube.json 사용 (Blogger와 별도 OAuth 클라이언트)
"""
import json
import os
import sys

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

SCOPES = [
    'https://www.googleapis.com/auth/youtube.upload',
    'https://www.googleapis.com/auth/youtube',
]

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
CREDENTIALS_PATH = os.path.join(BASE_DIR, 'credentials_youtube.json')


def main():
    if not os.path.exists(CREDENTIALS_PATH):
        print(f"[ERROR] credentials_youtube.json 없음: {CREDENTIALS_PATH}")
        sys.exit(1)

    with open(CREDENTIALS_PATH) as f:
        client_config = json.load(f)
    if 'web' in client_config and 'installed' not in client_config:
        client_config['installed'] = client_config.pop('web')

    flow = InstalledAppFlow.from_client_config(client_config, SCOPES)
    creds = flow.run_local_server(port=8080, prompt='consent')
    print("[OK] 새 토큰 발급 완료")

    token_data = json.loads(creds.to_json())
    refresh_token = token_data.get('refresh_token', '')

    print("\n" + "=" * 50)
    print("YouTube 토큰 발급 성공!")
    print("=" * 50)
    print(f"\nYOUTUBE_REFRESH_TOKEN:\n{refresh_token}")
    print(f"\n이 값을 .env 파일의 YOUTUBE_REFRESH_TOKEN 에 붙여넣으세요.")


if __name__ == '__main__':
    main()