I'm making an iOS app and I have this problem now.
I'd like to count the number of unread messages in database and assign it in a database different closure. Like below.
exports.arrivalNotifications = functions.database.ref('/trips/{tripId}')
.onCreate((snap, context) => {
const data = snap.val();
const uid = data.uid;
var counter = 0
admin.database().ref('/messages/').on('value', function(snapshot) {
snapshot.forEach(function(childSnapshot) {
var childData = childSnapshot.val();
if (childData.read === false) {
counter += 1
}
});
})
return admin.database().ref('/users/' + uid).once('value', snapshot => {
const data = snapshot.val();
const username = data.username
var payload = {
notification: {
title: username ' has ' + counter + " unread message.",
body: 'Press for more'
}
}
admin.messaging().sendToDevice(toUser.fcmToken, payload)
.then(function(response) {
console.log("Successfully sent message:", response);
return null;
})
.catch(function(error) {
console.log("Error sending message:", error);
});
})
})
So I want to use the counter in the payload but I can't find the way to do it. I'm not familiar with JavaScript so if someone can help me I'd appreciate.
I would write your Cloud Function as follow. Please note that I could not test it and it may need some fine-tuning/debugging... especially since it implies chaining several promises.
exports.arrivalNotifications = functions.database.ref('/trips/{tripId}').onCreate((snap, context) => {
const data = snap.val();
const uid = data.uid;
let counter = 0;
return admin.database().ref('/messages/').once('value')
.then(snapshot => {
snapshot.forEach(function (childSnapshot) {
const childData = childSnapshot.val();
if (childData.read === false) {
counter += 1;
}
});
return admin.database().ref('/users/' + uid).once('value');
})
.then(snapshot => {
const data = snapshot.val();
const username = data.username;
const payload = {
notification: {
title: username + ' has ' + counter + ' unread message.',
body: 'Press for more'
}
};
return admin.messaging().sendToDevice(toUser.fcmToken, payload);
})
.then(response => {
console.log("Successfully sent message:", response);
return null;
})
.catch(error => {
console.log("Error sending message:", error);
});
});
Related
For certain types of messages, I want to target users by FIRTokens vs topic, which are stored in my real-time database. I load these tokens with async/await and then decide if I want to send notifications to a topic vs a smaller list of users. The data loading code works as expected. But what's odd is that if I use .sendMulticast(payload), the notifications fail for all tokens in the list. On the other hand if I use .sendToDevice(adminFIRTokens, payload) the notification goes successfully to all my users. Right now my list has 2 tokens and with sendMulticast I have 2 failures and with sendToDevice I have 2 successes. Am I missing the point of what sendMulticast is supposed to do? According to the docs: Send messages to multiple devices:
The REST API and the Admin FCM APIs allow you to multicast a message to a list of device registration tokens. You can specify up to 500 device registration tokens per invocation.
So both should logically work. Then why does one fail and the other work? In fact with sendToDevice I get a multicastId in the response!
Here are some console outputs:
sendToDevice:
Sent filtered message notification successfully:
{
results:
[
{ messageId: '0:1...45' },
{ messageId: '16...55' }
],
canonicalRegistrationTokenCount: 0,
failureCount: 0,
successCount: 2,
multicastId: 3008...7000
}
sendMulticast:
List of tokens that caused failures: dJP03n-RC_Y:...MvPkTbuV,fDo1S8jPbCM:...2YETyXef
Cloud function to send the notification:
functions.database
.ref("/discussionMessages/{autoId}/")
.onCreate(async (snapshot, context) => {
// console.log("Snapshot: ", snapshot);
try {
const groupsRef = admin.database().ref("people/groups");
const adminUsersRef = groupsRef.child("admin");
const filteredUsersRef = groupsRef.child("filtered");
const filteredUsersSnapshot = await filteredUsersRef.once("value");
const adminUsersSnapshot = await adminUsersRef.once("value");
var adminUsersFIRTokens = {};
var filteredUsersFIRTokens = {};
if (filteredUsersSnapshot.exists()) {
filteredUsersFIRTokens = filteredUsersSnapshot.val();
}
if (adminUsersSnapshot.exists()) {
adminUsersFIRTokens = adminUsersSnapshot.val();
}
const topicName = "SpeechDrillDiscussions";
const message = snapshot.val();
const senderName = message.userName;
const senderCountry = message.userCountryEmoji;
const title = senderName + " " + senderCountry;
const messageText = message.message;
const messageTimestamp = message.messageTimestamp.toString();
const messageID = message.hasOwnProperty("messageID")
? message.messageID
: undefined;
const senderEmailId = message.userEmailAddress;
const senderUserName = getUserNameFromEmail(senderEmailId);
const isSenderFiltered = filteredUsersFIRTokens.hasOwnProperty(
senderUserName
);
var payload = {
notification: {
title: title,
body: messageText,
sound: "default",
},
data: {
messageID: messageID,
messageTimestamp: messageTimestamp,
},
};
if (isSenderFiltered) {
adminFIRTokens = Object.values(adminUsersFIRTokens);
// payload.tokens = adminFIRTokens; //Needed for sendMulticast
return (
admin
.messaging()
.sendToDevice(adminFIRTokens, payload)
// .sendMulticast(payload)
.then(function (response) {
if (response.failureCount === 0) {
console.log(
"Sent filtered message notification successfully:",
response
);
} else {
console.log(
"Sending filtered message notification failed for some tokens:",
response
);
}
// if (response.failureCount > 0) {
// const failedTokens = [];
// response.responses.forEach((resp, idx) => {
// if (!resp.success) {
// failedTokens.push(adminFIRTokens[idx]);
// }
// });
// console.log(
// "List of tokens that caused failures: " + failedTokens
// );
// }
return true;
})
);
} else {
payload.topic = topicName;
return admin
.messaging()
.send(payload)
.then(function (response) {
console.log("Notification sent successfully:", response);
return true;
});
}
} catch (error) {
console.log("Notification sent failed:", error);
return false;
}
});
I think it's an issue of using a different payload structure.
This is the old one (without iOS specific info):
var payload = {
notification: {
title: title,
body: messageText,
sound: "default",
},
data: {
messageID: messageID,
messageTimestamp: messageTimestamp,
},
};
Whereas this is the new version (apns has iOS specific info)
var payload = {
notification: {
title: title,
body: messageText,
},
data: {
messageID: messageID,
messageTimestamp: messageTimestamp,
},
apns: {
payload: {
aps: {
sound: "default",
},
},
},
};
With the new structure, both send and sendMulticast are working properly. Which would fail to send or give errors like apns key is not supported in payload.
The new function:
functions.database
.ref("/discussionMessages/{autoId}/")
.onCreate(async (snapshot, context) => {
// console.log("Snapshot: ", snapshot);
try {
const groupsRef = admin.database().ref("people/groups");
const adminUsersRef = groupsRef.child("admin");
const filteredUsersRef = groupsRef.child("filtered");
const filteredUsersSnapshot = await filteredUsersRef.once("value");
const adminUsersSnapshot = await adminUsersRef.once("value");
var adminUsersFIRTokens = {};
var filteredUsersFIRTokens = {};
if (filteredUsersSnapshot.exists()) {
filteredUsersFIRTokens = filteredUsersSnapshot.val();
}
if (adminUsersSnapshot.exists()) {
adminUsersFIRTokens = adminUsersSnapshot.val();
}
// console.log(
// "Admin and Filtered Users: ",
// adminUsersFIRTokens,
// " ",
// filteredUsersFIRTokens
// );
const topicName = "SpeechDrillDiscussions";
const message = snapshot.val();
// console.log("Received new message: ", message);
const senderName = message.userName;
const senderCountry = message.userCountryEmoji;
const title = senderName + " " + senderCountry;
const messageText = message.message;
const messageTimestamp = message.messageTimestamp.toString();
const messageID = message.hasOwnProperty("messageID")
? message.messageID
: undefined;
const senderEmailId = message.userEmailAddress;
const senderUserName = getUserNameFromEmail(senderEmailId);
const isSenderFiltered = filteredUsersFIRTokens.hasOwnProperty(
senderUserName
);
console.log(
"Will attempt to send notification for message with message id: ",
messageID
);
var payload = {
notification: {
title: title,
body: messageText,
},
data: {
messageID: messageID,
messageTimestamp: messageTimestamp,
},
apns: {
payload: {
aps: {
sound: "default",
},
},
},
};
console.log("Is sender filtered? ", isSenderFiltered);
if (isSenderFiltered) {
adminFIRTokens = Object.values(adminUsersFIRTokens);
console.log("Sending filtered notification with sendMulticast()");
payload.tokens = adminFIRTokens; //Needed for sendMulticast
return admin
.messaging()
.sendMulticast(payload)
.then((response) => {
console.log(
"Sent filtered message (using sendMulticast) notification: ",
JSON.stringify(response)
);
if (response.failureCount > 0) {
const failedTokens = [];
response.responses.forEach((resp, idx) => {
if (!resp.success) {
failedTokens.push(adminFIRTokens[idx]);
}
});
console.log(
"List of tokens that caused failures: " + failedTokens
);
}
return true;
});
} else {
console.log("Sending topic message with send()");
payload.topic = topicName;
return admin
.messaging()
.send(payload)
.then((response) => {
console.log(
"Sent topic message (using send) notification: ",
JSON.stringify(response)
);
return true;
});
}
} catch (error) {
console.log("Notification sent failed:", error);
return false;
}
});
I'm trying to delete all the users in my auth and database using firebase functions. Here's my code for that:
const admin = require("firebase-admin");
admin.initializeApp({
credential: admin.credential.applicationDefault(),
databaseURL: "----"
});
export const listenToAdminCommands = functions.firestore.document('collection/{docUid}')
.onWrite((change, context) =>
{
const pass: string = '--';
// const before = change.before.exists? change.before.data() : null;
const after = change.after.exists? change.after.data() : null;
if(after !== null && after !== undefined) {
const adminCommandType: string = after['type'];
const adminCommandPass: string = after['pass'];
if(adminCommandType === 'deleteAll' && adminCommandPass === pass) {
adminDeleteAllUsers();
}
}
});
//Admin control
function adminDeleteAllUsers() {
deleteAllUsers(' ');
return null;
}
function deleteAllUsers(nextPageToken: any) {
admin.auth().listUsers(1000, nextPageToken)
.then((listUsersResult: any) => {
//go through each one and check last time signed in
listUsersResult.users.forEach((userRecord: any) => {
const user: any = userRecord.toJSON();
const userUid = user['uid'];
console.log('Deleting user for data delete uid = ', userUid);
admin.auth().deleteUser(userUid)
.then(() => {
console.log('Successfully deleted user', userUid);
})
.catch((error: any) => {
console.log('Error deleting user:', error);
});
db.collection('users').doc(userUid).delete();
});
if (listUsersResult.pageToken) {
// List next batch of users.
listAllUsers(listUsersResult.pageToken);
}
})
.catch((error: any) => {
console.log('Error listing users:', error);
});
}
When the function get executed, no user is deleted. It's like the function never worked. Am I missing something?
Update:
I'm not sure if this is the way to do it, but it's still not working. I tried to handle promises correctly, but I'm not sure if what I'm doing is correct or not.
export const listenToAdminCommands = functions.firestore.document('collection/{docUid}')
.onWrite((change, context) =>
{
const pass: string = '---';
// const before = change.before.exists? change.before.data() : null;
const after = change.after.exists? change.after.data() : null;
if(after !== null && after !== undefined) {
const adminCommandType: string = after['type'];
const adminCommandPass: string = after['pass'];
if(adminCommandType === 'deleteAll' && adminCommandPass === pass) {
return adminDeleteAllUsers();
}
return;
}
return;
});
//Admin control
function adminDeleteAllUsers() {
return deleteAllUsers(' ');
}
function deleteAllUsers(nextPageToken: any) {
return admin.auth().listUsers(1000, nextPageToken)
.then((listUsersResult: any) => {
//go through each one and check last time signed in
listUsersResult.users.forEach((userRecord: any) => {
const user: any = userRecord.toJSON();
const userUid = user['uid'];
console.log('Deleting user for data delete uid = ', userUid);
return admin.auth().deleteUser(userUid)
.then(() => {
console.log('Successfully deleted user', userUid);
return db.collection('users').doc(userUid).delete();
})
.catch((error: any) => {
console.log('Error deleting user:', error);
return;
});
});
if (listUsersResult.pageToken) {
// List next batch of users.
listAllUsers(listUsersResult.pageToken);
}
return;
})
.catch((error: any) => {
console.log('Error listing users:', error);
return;
});
}
I'm trying to access one of my node.js lambda functions from an HTML form, using Javascript, but the lambda doesn't save the data.
Here is the Javascript from the HTML page:
let user = document.getElementById('userLogged');
let currentUser = user.textContent;
let channel = document.getElementById('channelLogged');
let currentChannel = channel.textContent;
let message = $("#messageText").val();
let socket = new WebSocket(WEBS + currentChannel);
socket.onopen = () => {
socket.send(JSON.stringify({
action: "sendMessage",
data: {
messageText: message,
username: currentUser,
currentChannel: currentChannel
}
}));
}
});
And here are my lamba function, that is supposed to send and save the messages:
module.exports.sendMessageHandler = (event, context, callback) => {
sendMessageToAllConnected(event).then(() => {
callback(null, successfullResponse)
}).catch (err => {
callback(null, JSON.stringify(err));
});
};
const sendMessageToAllConnected = (event) => {
const body = JSON.parse(event.body);
const message = body.data.messageText;
const channel = body.data.currentChannel;
const user = body.data.username;
return getConnectionIds(channel).then(connectionData => {
return connectionData.Items.map(connectionId => {
return saveMessages.save(event, user, channel, message, connectionId.connectionId);
});
});
};
const getConnectionIds = channel => {
const params = {
TableName: CHATCONNECTION_TABLE,
Key: {
channel: channel
},
ProjectionExpression: 'connectionId'
};
return dynamo.scan(params).promise();
};
module.exports.getMessagesHandler = event => {
const channel = event.queryStringParameters.channel;
const params = {
TableName: MESSAGE_TABLE,
Key: {
channel: channel
},
ProjectionExpression: 'username, messageDate, messageText'
};
return dynamo.scan(params).promise();
};
module.exports.save = (event, user, channel, message, connectionId) => {
const body = JSON.parse(event.body);
const postData = body.data;
const endpoint = event.requestContext.domainName + "/" + event.requestContext.stage;
const apigwManagementApi = new AWS.ApiGatewayManagementApi({
apiVersion: "2018-11-29",
endpoint: endpoint
});
const postParams = {
connectionId : connectionId,
Data: postData
};
const dbParams = {
TableName: MESSAGE_TABLE,
Item: {
channel: channel,
messageDate: Date.now(),
username: user,
messageText: message,
}
};
dynamo.put(dbParams);
return apigwManagementApi.postToConnection(postParams).promise();
};
The sls logs for the sendMessageHandler don't return any error, but I don't see there any result from the request. Also, I have another lambda, that is supposed go get all the saved messages, but returns error that channel key is undefined.
module.exports.getMessagesHandler = event => {
const channel = event.queryStringParameters.channel;
const params = {
TableName: MESSAGE_TABLE,
Key: {
channel: channel
},
ProjectionExpression: 'username, messageDate, messageText'
};
return dynamo.scan(params).promise();
};
Any ideas?
I resolved one of the problems- changed the const channel = event.queryStringParameters.channel; to const channel = event.query.channel; and now I don't get the error that channel is undefined. But now I have a problem with appending the result of getMessagesHandler to the HTML. Here is the code for that.
debugger;
let user = $("#username").val();
let channel = $("#channel").val();
const URL = 'https://ktwdb7v696.execute-api.us-east-1.amazonaws.com/dev/getMessages?channel=';
let realURL = URL + channel;
$.ajax({
type: 'GET',
url: realURL,
success: function (data) {
$("#loginForm").css("visibility", "hidden");
$("#messageForm").css("visibility", "visible");
$("#messages").css("visibility", "visible");
// $("#userLogged").text(user);
// $("#channelLogged").text(channel);
document.getElementById('userLogged').innerHTML = user;
document.getElementById('channelLogged').innerHTML = channel;
document.getElementById('title').innerHTML = 'Please write a message to send';
data.Items.forEach(function (message) {
console.log(message.messageDate);
console.log(message.username);
console.log(message.messageText);
$('#messages').append('<p>Date: ' + message.messageDate + '</p>'
+ '<p>User: ' + message.username + '</p>'
+ '<p>Message: ' + message.messageText + '</p>'
);
});
}
});
});
In fact I think there is nothing to append at all, anyone can help with that?
I'm new to react native and I'm working on firebase push notification. I'm getting the notification, but the problem is I'm not able to fetch data and display it in flatlist. Notification are shown perfectly. But the problem is why I can't fetch data. I want this event data to be fteched in my notification list which i have added below image.
componentWillMount() {
const firebase = require("firebase");
if (!firebase.apps.length) {
firebase.initializeApp(db);
}
this.fetchEventsList()
}
// Fetch events list
fetchEventsList = () => {
Preference.set('userPhoneCheck', '+917508060520');
let phone = Preference.get('userPhoneCheck');
firebase.database().ref('/users').child(phone).child('/events').once('value').then((snapshot) => {
let data = snapshot.val();
let items = Object.values(data);
this.setState({
userEventsList: items
});
// this.deleteOldEvents();
this.initAllEventList();
}).then((data) => {}).catch((error) => {
//error callback
console.log('error ', error)
})
}
//fetch the friends list according to group name
initAllEventList = () => {
//let groupName='G1';
let eventId = '';
let userEventsList = [...this.state.userEventsList];
for (var i = 0; i < userEventsList.length; i++) {
eventId = userEventsList[i].eventId;
ToastAndroid.show("eventId>" + eventId, ToastAndroid.SHORT);
if (eventId != '') {
this.fetchFriendsList(eventId);
}
}
}
//app users remove that not in contacts
fetchFriendsList = (eventId) => {
let allEventsList = [...this.state.allEventsList];
firebase.database().ref('/events').child(eventId).once('value').then((snapshot) => {
let data = snapshot.val();
let items = Object.values(data);
allEventsList.push(items);
this.setState({
allEventsList: allEventsList
});
ToastAndroid.show("kk>" + allEventsList.length, ToastAndroid.SHORT);
}).then((data) => {
}).catch((error) => {
//error callback
console.log('error ', error)
})
}
I wrote this to detect a docment change,when it changes i want to send notifications to all the users who all are inside the Collection "users"
the problem is How to choose all docments inside a collection??
/*eslint-disable */
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
exports.sendNotification23 = functions.firestore.document("student/anbu").onWrite(event => {
//now i'm returning to my personal document and fetched my username only because i don't want to send a notification to myself,
const fromUser = admin.firestore().collection("users").doc("iamrajesh#gmail.com").get();
//here i want to fetch all documents in the "users" collection
const toUser = admin.firestore().collection("users").document.get();//if i replace "docmument" with "doc("xxxxxxx#gmail.com")" it works it fetches his FCM but how to fetch all documents??
//All documents has a "username",and a fcm "token"
return Promise.all([fromUser, toUser]).then(result => {
const fromUserName = result[0].data().userName;
const toUserName = result[1].data().userName;
const tokenId = result[1].data().tokenId;
const notificationContent = {
notification: {
title: fromUserName + " is shopping",
body: toUserName,
icon: "default",
sound : "default"
}
};
return admin.messaging().sendToDevice(tokenId, notificationContent).then(result => {
console.log("Notification sent!");
//admin.firestore().collection("notifications").doc(userEmail).collection("userNotifications").doc(notificationId).delete();
});
});
});
The following should do the trick.
See the explanations within the code
/*eslint-disable */
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
exports.sendNotification23 = functions.firestore.document("student/anbu").onWrite((change, context) => {
// Note the syntax has change to Cloud Function v1.+ version (see https://firebase.google.com/docs/functions/beta-v1-diff?0#cloud-firestore)
const promises = [];
let fromUserName = "";
let fromUserId = "";
return admin.firestore().collection("users").doc("iamrajesh#gmail.com").get()
.then(doc => {
if (doc.exists) {
console.log("Document data:", doc.data());
fromUserName = doc.data().userName;
fromUserId = doc.id;
return admin.firestore().collection("users").get();
} else {
throw new Error("No sender document!");
//the error is goinf to be catched by the catch method at the end of the promise chaining
}
})
.then(querySnapshot => {
querySnapshot.forEach(function(doc) {
if (doc.id != fromUserId) { //Here we avoid sending a notification to yourself
const toUserName = doc.data().userName;
const tokenId = doc.data().tokenId;
const notificationContent = {
notification: {
title: fromUserName + " is shopping",
body: toUserName,
icon: "default",
sound : "default"
}
};
promises.push(admin.messaging().sendToDevice(tokenId, notificationContent));
}
});
return Promise.all(promises);
})
.then(results => {
console.log("All notifications sent!");
return true;
})
.catch(error => {
console.log(error);
return false;
});
});