消息推送双十一优惠活动

// 初始化FCM
const messaging = firebase.messaging();

// 请求权限
messaging.requestPermission()
  .then(() => {
    console.log('Notification permission granted.');
    return messaging.getToken();
  })
  .then((token) => {
    console.log('FCM Token:', token);
    // 发送推送消息
    sendPushNotification(token, '双十一优惠活动开始了！');
  })
  .catch((err) => {
    console.log('Unable to get permission to notify.', err);
  });

// 发送推送消息的函数
function sendPushNotification(token, message) {
  const payload = {
    notification: {
      title: '双十一优惠',
      body: message,
      icon: 'icon.png'
    }
  };

  fetch('https://fcm.googleapis.com/fcm/send', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': 'key=YOUR_SERVER_KEY'
    },
    body: JSON.stringify({
      to: token,
      data: payload
    })
  })
  .then(response => response.json())
  .then(data => {
    console.log('Push notification sent:', data);
  })
  .catch(error => {
    console.error('Error sending push notification:', error);
  });
}