如何通过Firebase Cloud Messaging从云函数发送通知？

const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp();

exports.sendNotification = functions.https.onCall(async (data, context) => {
  // 获取接收通知的设备令牌和通知内容
  const { deviceToken, notification } = data;

  // 构建消息对象
  const message = {
    token: deviceToken,
    notification: {
      title: notification.title,
      body: notification.body,
    },
  };

  try {
    // 发送通知
    const response = await admin.messaging().send(message);
    console.log('Notification sent successfully:', response);
    return { success: true };
  } catch (error) {
    console.error('Error sending notification:', error);
    return { error: error.message };
  }
});

firebase deploy --only functions

// 获取云函数引用
const sendNotification = firebase.functions().httpsCallable('sendNotification');

// 定义通知内容和接收设备令牌
const notification = {
  title: 'New Message',
  body: 'You have a new message.',
};
const deviceToken = '...'; // 接收通知的设备令牌

// 调用云函数发送通知
sendNotification({ deviceToken, notification })
  .then((response) => {
    console.log('Notification sent successfully:', response);
  })
  .catch((error) => {
    console.error('Error sending notification:', error);
  });