I am trying to add poke notifications on my app. And i am stuck to send notifications with firebase functions and message.I deployed my functions to firebase with firebase deploy --only functions. And i am getting error to server side. I am getting this error on my functions :
Unhandled error TypeError: handler is not a function
at fixedLen (/workspace/node_modules/firebase-functions/lib/v2/providers/https.js:153:37)
at /workspace/node_modules/firebase-functions/lib/common/providers/https.js:544:32
at process.processTicksAndRejections (node:internal/process/task_queues:105:5)**
And these are my functions:
const functions = require("firebase-functions");
const admin = require("firebase-admin"); //admin sdk
exports.sendPoke= functions.https.onCall(async (data, context) => {
const sentBy = context.auth?.uid; // sender
const sentTo = data.sentTo; // reciever
const message = data.message || "Seni dürttü!";
const currentTime = admin.firestore.Timestamp.now();
if(!sentBy){
console.error("Failed to add Sender User");
}
if(!sentTo){
console.error("Submitted User could not be added");
}
if (!sentBy || !sentTo) {
throw new functions.https.HttpsError(
"invalid-argument",
"Sender and recipient information is required."
);
}
try {
// Bildirimi gönder
const payload = {
notification: {
title: "A new poke!",
body: `poked you!`,
},
data: {
sentBy,
sentTo,
message,
},
};
//I am suspecting this line
await admin.messaging().sendToDevice(sentTo, payload);//send noticfication only one user
return { success: true, message: "Poke sent." };
} catch (error) {
console.error("Poke sent error:", error);
throw new functions.https.HttpsError("unknown", "Bir hata oluştu.");
}
});
and this my index.js file context :
const functions = require("firebase-functions");
const admin = require("firebase-admin");
// if app already started dont start again
if (!admin.apps.length) {
admin.initializeApp();
}
// export sendPoke function
const sendPoke = require("./functions/utilities/pokeAndNotifications/sendPoke");
exports.sendPoke = functions.https.onCall(sendPoke);
And this is how i use this firebase function on my flutter app :
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter_dotenv/flutter_dotenv.dart';
import 'package:cloud_functions/cloud_functions.dart';
Future<void> sendPokeNotification(String sentTo) async {
try {
// call callable function
final HttpsCallable callable =
FirebaseFunctions
.instance
.httpsCallable('sendPoke');
// send data and give respond
final response = await callable.call(<String, dynamic>{
"sentTo": sentTo, // reciever UID
"message": 'Hi, i poked you!', // message content
});
print('Function respond: ${response.data}');
} catch (e) {
print('Send Poke Error: $e');
}
}
Also i tried this ways to resolve my problem :
on index.js file
const sendPoke = require("./functions/utilities/pokeAndNotifications/sendPoke");
exports.sendPoke = functions.https.onCall(sendPoke);
on sendPoke file
module.exports.sendPoke= functions.https.onCall(async (data, context) => {
const sentBy = context.auth?.uid; // sender
const sentTo = data.sentTo; // reciever
const message = data.message || "Seni dürttü!";
const currentTime = admin.firestore.Timestamp.now();
if(!sentBy){
console.error("Failed to add Sender User");
}
if(!sentTo){
console.error("Submitted User could not be added");
}
index.js and sendPoke.js
exports.sendPokeYourFriend= functions.https.onCall(async (data, context) => {
const sentBy = context.auth?.uid; // sender
const sentTo = data.sentTo; // reciever
const message = data.message || "Seni dürttü!";
const currentTime = admin.firestore.Timestamp.now();
if(!sentBy){
console.error("Failed to add Sender User");
}
if(!sentTo){
console.error("Submitted User could not be added");
}
exports.sendPoke = functions.https.onCall(sendPoke.sendPokeYourFriend);
I am trying to add poke notifications on my app. And i am stuck to send notifications with firebase functions and message.I deployed my functions to firebase with firebase deploy --only functions. And i am getting error to server side. I am getting this error on my functions :
Unhandled error TypeError: handler is not a function
at fixedLen (/workspace/node_modules/firebase-functions/lib/v2/providers/https.js:153:37)
at /workspace/node_modules/firebase-functions/lib/common/providers/https.js:544:32
at process.processTicksAndRejections (node:internal/process/task_queues:105:5)**
And these are my functions:
const functions = require("firebase-functions");
const admin = require("firebase-admin"); //admin sdk
exports.sendPoke= functions.https.onCall(async (data, context) => {
const sentBy = context.auth?.uid; // sender
const sentTo = data.sentTo; // reciever
const message = data.message || "Seni dürttü!";
const currentTime = admin.firestore.Timestamp.now();
if(!sentBy){
console.error("Failed to add Sender User");
}
if(!sentTo){
console.error("Submitted User could not be added");
}
if (!sentBy || !sentTo) {
throw new functions.https.HttpsError(
"invalid-argument",
"Sender and recipient information is required."
);
}
try {
// Bildirimi gönder
const payload = {
notification: {
title: "A new poke!",
body: `poked you!`,
},
data: {
sentBy,
sentTo,
message,
},
};
//I am suspecting this line
await admin.messaging().sendToDevice(sentTo, payload);//send noticfication only one user
return { success: true, message: "Poke sent." };
} catch (error) {
console.error("Poke sent error:", error);
throw new functions.https.HttpsError("unknown", "Bir hata oluştu.");
}
});
and this my index.js file context :
const functions = require("firebase-functions");
const admin = require("firebase-admin");
// if app already started dont start again
if (!admin.apps.length) {
admin.initializeApp();
}
// export sendPoke function
const sendPoke = require("./functions/utilities/pokeAndNotifications/sendPoke");
exports.sendPoke = functions.https.onCall(sendPoke);
And this is how i use this firebase function on my flutter app :
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter_dotenv/flutter_dotenv.dart';
import 'package:cloud_functions/cloud_functions.dart';
Future<void> sendPokeNotification(String sentTo) async {
try {
// call callable function
final HttpsCallable callable =
FirebaseFunctions
.instance
.httpsCallable('sendPoke');
// send data and give respond
final response = await callable.call(<String, dynamic>{
"sentTo": sentTo, // reciever UID
"message": 'Hi, i poked you!', // message content
});
print('Function respond: ${response.data}');
} catch (e) {
print('Send Poke Error: $e');
}
}
Also i tried this ways to resolve my problem :
on index.js file
const sendPoke = require("./functions/utilities/pokeAndNotifications/sendPoke");
exports.sendPoke = functions.https.onCall(sendPoke);
on sendPoke file
module.exports.sendPoke= functions.https.onCall(async (data, context) => {
const sentBy = context.auth?.uid; // sender
const sentTo = data.sentTo; // reciever
const message = data.message || "Seni dürttü!";
const currentTime = admin.firestore.Timestamp.now();
if(!sentBy){
console.error("Failed to add Sender User");
}
if(!sentTo){
console.error("Submitted User could not be added");
}
index.js and sendPoke.js
exports.sendPokeYourFriend= functions.https.onCall(async (data, context) => {
const sentBy = context.auth?.uid; // sender
const sentTo = data.sentTo; // reciever
const message = data.message || "Seni dürttü!";
const currentTime = admin.firestore.Timestamp.now();
if(!sentBy){
console.error("Failed to add Sender User");
}
if(!sentTo){
console.error("Submitted User could not be added");
}
exports.sendPoke = functions.https.onCall(sendPoke.sendPokeYourFriend);
The issue is with
await admin.messaging().sendToDevice(sentTo, payload);
Yes but it is because you haven't initialised admin, only imported it.
Add admin.initializeApp() at the top and you should be fine. Fingers Crossed!