Swift 5.1 Combine Observable/Environment variable not updating when didSet - swift

Question

I am trying to figure out why my session is not updating despite didSet firing and presumably updating User.
I've removed superfluous comments and style from the snippets but this is what I am trying currently.
// SessionStore.swift
class User {
var uid: String
var phoneNumber: String
init(uid: String, phoneNumber: String) {
self.uid = uid
self.phoneNumber = phoneNumber
}
}
class SessionStore : ObservableObject {
var didChange = PassthroughSubject<SessionStore, Never>()
var session: User? { didSet { self.didChange.send(self); print("didSet()") }}
var handle: AuthStateDidChangeListenerHandle?
func listen () {
// monitor authentication changes using firebase
handle = Auth.auth().addStateDidChangeListener { (auth, user) in
if let user = user {
self.session = User(
uid: user.uid,
phoneNumber: ""
)
} else {
self.session = nil
}
}
}
func register(
phoneNumber: String,
handler: #escaping AuthDataResultCallback
){
PhoneAuthProvider.provider(auth: Auth.auth())
PhoneAuthProvider.provider().verifyPhoneNumber(phoneNumber, uiDelegate: nil) { (verificationID, error) in
if let error = error {
return
}
UserDefaults.standard.set(verificationID, forKey: "authVerificationID")
let verificationID = UserDefaults.standard.string(forKey: "authVerificationID")
let verificationCode = "123456"
let credential = PhoneAuthProvider.provider().credential(
withVerificationID: verificationID!,
verificationCode: verificationCode
)
Auth.auth().signIn(with: credential) { (authResult, error) in
if let error = error {
print(error)
return
}
self.listen()
return
}
}
}
}
and
struct Login: View {
#EnvironmentObject var session: SessionStore
#State var phoneNumber: String = ""
#State var loading = false
#State var error = false
func getUser () {
session.listen()
}
var body: some View {
Group {
// If the user is logged in
if(session.session != nil) {
Score()
// If the user is NOT logged in
} else {
VStack {
Text("Register!")
TextField("Phone Number", text: $phoneNumber)
MyButton(...).gesture(TapGesture().onEnded {
self.session.register(
phoneNumber: self.phoneNumber
){
(result, error) in
if(error != nil) {
self.error = true
} else {
self.phoneNumber = ""
self.getUser()
}
})
}
}
}
}.onAppear(perform: getUser)
}
}

Answer 1

Scratchy (only based on your snapshot)...
Instead of this
class SessionStore : ObservableObject {
var didChange = PassthroughSubject<SessionStore, Never>()
var session: User? { didSet { self.didChange.send(self); print("didSet()") }}
use this
class SessionStore : ObservableObject {
#Published var session: User?
as far as I see from snapshot no more changes should be needed, might be some type alignment in other parts.