Data Migration Parse to Firebase. Directions - parse-platform

Question

My app currently uses Parse and it's time to migrate. I am either considering hosting my own Parse Server or use Firebase. I am looking for guidance on how to approach my data migration problem to Firebase based on my current data model.
I have a table Users and that table, aside from all the normal columns, has Partner column which is of type User.
The flow, works like this:
User 1 signs up
User 1 invites User 2
User 2 receives invite e-mail with invite code
User 2 goes to app and signs-up using that code
And then I have a Parse cloud function that joins both users as partners adding each other's IDs to the respective column.
The partners are connected via a GCM topic name, so I can push notifications just to these two people.
So this is what I would like to achieve in Firebase. I would like to have two users to connect together in a way.
Maybe I could have a json like this:
partners: {
topic_name_partner1: {
user1: {info about user1},
user2: {info about user2}
},
topic_name_partner2: {
user1: {info about user1},
user2: {info about user2}
},
topic_name_partner3: {
user1: {info about user1},
user2: {info about user2}
}
....etc
}
Would this approach make sense ? Obviously I want a scalable application, so looking for help as well to best represent the data in that sense.
And, lastly, does Firebase have Cloud Functions like Parse? If not, how can I connect both users when the second user is registering? Maybe I have to look up Ref for the topic_name_partner1 string and then when finding it, update user2 with the reference to that user?
Thanks!

Answer 1

Based on this firebase structure guide, here is what I will do
users: {
user1: {
name: "user1",
partner: "topic_name_partner1",
... other info
},
user2: {
name: "user2",
partner: "topic_name_partner1",
... other info
},
user3: {
name: "user3",
partner: "topic_name_partner2",
... other info
}
}
partners: {
topic_name_partner1: {
user1: true,
user2: true
},
topic_name_partner2: {
user3: true
}
}
so the data will not so big when I just want to get a list of users in a partner without their details.
and currently Firebase does not have Cloud Functions feature like Parse, so you have to move the data from the client (or probably use their Firebase SDK for server).