Question

我想在添加到 Firebase 的数据后 1 小时内发送通知，并且想在添加数据 1 天后取消通知。因为我不懂 JavaScript，而且我还是软件世界的新手，我无法弄清楚它的算法，所以我写了类似的东西。 addedNewCard 方法有效，但我无法调整时间。

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

admin.initializeApp(functions.config().functions);

var newData;

exports.addedNewCard = 
functions.firestore.document('Users/{userID}/Cards/{cardID}').onCreate(async 
(snapshot, context) => {

const cardID = context.params.cardID;

if (snapshot.empty) {
    console.log('No Devices');
    return;
}

newData = snapshot.data();

const cardAddedDate = newData.cardAddedDate;

const deviceIdTokens = await admin
    .firestore()
    .collection('DeviceToken')
    .get();

var tokens = [];

for (var token of deviceIdTokens.docs) {
    tokens.push(token.data().deviceToken);
}

var payload = {
    notification: {
        title: 'Tekrar vakti',
        body: 'Tekrar etmen gereken kelimeler var!!!',
        sound: 'default',
    },
    data: {
        click_action: 'FLUTTER_NOTIFICATIoN_CLICK',
        sendCardID: cardID,
    }
};
const options = {
    priority: "high",
};

try {
    await admin.messaging().sendToDevice(tokens, payload, options);
    console.log('Notification sent successfully');
} catch (err) {
    console.log(err);
}
 })

exports.timeSettings = functions.pubsub.schedule('every 1 mins').onRun(async 
(context) => {
console.log(context.timestamp);

let now = new Date();

const finishWorking = now.setDate(now.getDate + 1);

const finishWorkingStamp = admin.firestore.Timestamp.fromDate(finishWorking);

db.collection('Users/{userID}/Cards').where('cardAddedDate', '<', 
finishWorkingStamp).get().then((snap) => {
    if (snap.exist) {
        snap.forEach(() => {
            return addedNewCard();
        }).catch((e) => {
            return console.log(e);
        });
    }
});

 })

Answer 1

感谢您的评论，我建议您使用 Cloud Task。借助 Cloud Task，您可以在未来延迟执行。

当用户发送数据时，您可以提前计划24H通知（每15分钟1个通知，持续1天->创建96个任务，下一个比前一个延迟15分钟） .

您有代码示例 here。看看这部分，改变延迟

  if (inSeconds) {
    // The time when the task is scheduled to be attempted.
    task.scheduleTime = {
      seconds: inSeconds + Date.now() / 1000,
    };
  }

Answer 2

我不会在客户端做日程通知，而是在服务器端配置和发送日程。尝试为客户端创建线程来处理通知。

Answer 3

您必须创建一个 Firebase 云功能，您需要在其中升级您的 Firebase 帐户订阅并使用 pub-sub。

const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp();
exports.scheduledFunctionCrontab = functions.pubsub.schedule('*/15 * * * *').timeZone('Asia/Kolkata').onRun(async (context) => {
console.log('This will be run every 15 minutes');
return null});

白天每 15 分钟发送一次通知

3 个答案: