Google上的操作-要求用户在令牌到期前重新链接其帐户

async function refreshToken(refreshToken) {
  const response = await fetch('https://oauth2.googleapis.com/token', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/x-www-form-urlencoded'
    },
    body: new URLSearchParams({
      grant_type: 'refresh_token',
      refresh_token: refreshToken,
      client_id: 'YOUR_CLIENT_ID',
      client_secret: 'YOUR_CLIENT_SECRET'
    })
  });

  const data = await response.json();
  if (data.access_token) {
    // 更新应用中的访问令牌
    localStorage.setItem('access_token', data.access_token);
  } else {
    // 处理错误情况，如重新进行授权流程
    console.error('Failed to refresh token:', data);
  }
}

// 检查令牌是否即将过期，并在必要时刷新
function checkTokenExpiration() {
  const accessToken = localStorage.getItem('access_token');
  const tokenExpiry = localStorage.getItem('token_expiry');

  if (accessToken && tokenExpiry && Date.now() > tokenExpiry - 60000) { // 提前1分钟刷新
    const refreshToken = localStorage.getItem('refresh_token');
    refreshToken(refreshToken);
  }
}

// 定期检查令牌过期情况
setInterval(checkTokenExpiration, 60000);