import { google } from 'googleapis';

export async function getAccessToken(scopes: string[]): Promise<string | null> {
  const key = require(SERVICE_ACCOUNT_JSON_FILE_PATH);
  const jwtClient = new google.auth.JWT(
    key.client_email,
    undefined,
    key.private_key,
    scopes,
    undefined
  );

  const result = await jwtClient.authorize();
  const accessToken = result.access_token;
  if (accessToken) {
    console.log(accessToken);
    return accessToken;
  } else {
    console.log('Provided service account does not have permission to generate access tokens');
    return null;
  }
}