Firebase sends topic notifications to every users on iOS - ios

Question

Hi I'm using firebase to manage the notifications, but when I handle a message with my index.js, sendToTopic function send notification without check the topic.
So I've tried to send a message with firebase's console, and it's the same.
During the users registration, on iOS environment, I don't subscribe user to anything, but still receives the notification.
My index.js is:
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
exports.sendNotification = functions.database.ref('topics/{code}/')
.onWrite(event =>{
var request = event.data.val();
var signals = request.signals;
var index = Object.keys(signals).length-1;
var lastSignalKey = Object.keys(signals)[index];
var lastSignal = signals[lastSignalKey];
var code = lastSignal.code;
var uid = lastSignal.uid;
var type = lastSignal.type;
var when = lastSignal.when;
var sound = "sound.aiff";
var payload = {
notification : {
body : "mMessage",
title : "MoVeng",
"sound" : sound
},
data: {
uid: uid,
code: code,
type: type,
when: when
}
};
let signal = admin.database()
.ref("topics/"+
code + "/"+
type+ "/"+
uid);
signal.remove();
admin.messaging().sendToTopic(code, payload).then(function(response){
console.log("Success: ",response);
})
.catch(function(error){
console.log("Error: ",error);
})
});
I've tried to googling, but no one has this problem.
I don't understand why notifications come in if no ID, no handler, no token are passed through the notification, just the topic name, and sendToTopic doesn't do what it should do.
this is my appDelegate code, if it can help someone to help me:
import UIKit
import Firebase
import FirebaseDatabase
import UserNotifications
import FirebaseMessaging
#UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate,UNUserNotificationCenterDelegate {
public static var active = false
var window: UIWindow?
let sharedInstance = FirebaseAPI()
let defaults = UserDefaults.standard
var data : NSDictionary?
override init(){
super.init()
let logs = defaults.object(forKey: "logs")
print(String(describing: logs))
UIFont.overrideInitialize()
}
func getData() -> NSDictionary?{
return data
}
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]?) -> Bool {
if let options = launchOptions
{
let params = options[.remoteNotification] as! NSDictionary
data = params
}
else
{
application.applicationIconBadgeNumber = 0
}
FirebaseApp.configure()
UNUserNotificationCenter.current().requestAuthorization(options: [.badge, .alert, .sound]) { (authenticated, error) in
}
if #available(iOS 10.0, *) {
// For iOS 10 display notification (sent via APNS)
UNUserNotificationCenter.current().delegate = self
let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
UNUserNotificationCenter.current().requestAuthorization(
options: authOptions,
completionHandler: {_, _ in })
} else {
let settings: UIUserNotificationSettings =
UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
application.registerUserNotificationSettings(settings)
}
application.registerForRemoteNotifications()
return true
}
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
sharedInstance.findCode(forUser: (Auth.auth().currentUser?.uid)!) { (code) in
if let notificationCode = notification.request.content.userInfo["code"] as! String?
{
if (notificationCode.isEqual(code))
{
completionHandler([.badge, .alert, .sound])
}
}
}
}
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: #escaping () -> Void) {
let request = response.notification.request
print("mah")
if response.actionIdentifier == "moveng"
{
let whoSignaledMe = request.content.userInfo["whoSignaledMe"] as? String
let signal = Signal.getAnswer(code: whoSignaledMe!)
FirebaseAPI.getNotificationKey(forUser: whoSignaledMe!,
ofType: "answers").setValue(signal.get());
}
completionHandler()
}
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any], fetchCompletionHandler completionHandler: #escaping (UIBackgroundFetchResult) -> Void) {
completionHandler(UIBackgroundFetchResult.newData)
}
}
Where am I wrong?