Firebase FCM: Different Sound Settings for Topic Push Notifications - node.js

Question

I am writing an iOS app that allows people to set sound settings (either default sound or no sound) for a particular push notification that subscribe to a particular topic.
Different people will have different sound settings, is there a way to send push notification settings to a topic, but with differing sound settings depending on the user.
I have the following implementation:
exports.pushNotifications = functions.database.ref('/companies/{companyID}/posts').onWrite((snap, context) => {
const companyID = context.params.companyID
const message = {
"condition": `'allCompanies' in topics || '${companyID}' in topics`,
"apns": {
"headers": {
"apns-priority": "5"
},
"payload": {
"aps": {
"alert": {
"body": "New gossips"
},
"sound": "default", //Any ways to vary this?
"badge": 1
}
}
}
};
return admin.messaging().send(message)
.then((response) => {
return console.log('PNForAllCompanies Successful: ', response);
})
.catch((error) => {
return console.log('PNForAllCompanies Error: ', error);
});
})
I tried to find resources in this area but seems limited. Does anyone have any idea to do so?
EDIT (For clearer description of use case):
In the settings page of the app, users can set the sound settings (either default, or none) of a push notification when a new post is added with the tag "My Company" like so:
How I implement this is to do a database trigger to that company node. When there is a new post added to that company node, it will send a push notification to everyone who has subscribed to that companyID as a topic.
However, for everyone who have subscribed to that companyID as a topic may like to have sound when this notification is pushed while others may not want silent. With that, is there a way vary the sound parameter depending on the user's preference?

Answer 1

The value for the sound parameter should be the name of the sound file included in the app. For more details about the payload parameter, see the official documentation:
The sound to play when the device receives the notification.
Sound files can be in the main bundle of the client app or in the Library/Sounds folder of the app's data container. See the iOS Developer Library for more information.
"Different people will have different sound settings, is there a way to send push notification settings to a topic, but with differing sound settings depending on the user."
I'm not sure if I understand your use-case properly, but if you want the sound to vary depending on the topic the message it's coming from, you'll have to handle that from the client app side -- determining which topic the message it actually came from.