finding a nil value in session when accessing value in view - firebase

Question

So i have a sessionStore:
class SessionStore: ObservableObject {
var handle: AuthStateDidChangeListenerHandle?
#Published var isLoggedIn = false
#Published var userInSession: User?
func listenAuthenticationState() {
handle = Auth.auth().addStateDidChangeListener({(auth, user) in
if let user = user {
let firestoreGetUser = Firestore.firestore().collection("users").document(user.uid)
firestoreGetUser.getDocument{(document, error) in
if let dict = document?.data() {
guard let decodedUser = try? User.init(fromDictionary: dict) else { return }
self.userInSession = decodedUser
print("decoded user = \(decodedUser)")
}
}
self.isLoggedIn = true
print("user logged in")
} else {
self.isLoggedIn = false
self.userInSession = nil
print("no one logged in")
}
})
}
func logout() {
do {
try Auth.auth().signOut()
} catch {
}
}
func unbind() {
if let handle = handle {
Auth.auth().removeStateDidChangeListener(handle)
}
}
deinit {
unbind()
}
}
Its working as expected, I am able to sign in etc.
I have the following to pull the current user data:
import Foundation
import Firebase
import FirebaseAuth
import FirebaseFirestore
class ProfileViewModel: ObservableObject {
var uid: String = ""
var email: String = ""
var username: String = ""
var profileURL: String = ""
var bio: String = ""
var occupation: String = ""
var city: String = ""
func LoadAUser(userId: String) {
Firestore.firestore().collection("users").document(userId).getDocument{(snapshot, error) in
guard let snap = snapshot else {
print("error fetching data")
return
}
let dict = snap.data()
guard let decodedUser = try? User.init(fromDictionary: dict!) else { return }
print("decoded user - load user - \(decodedUser)")
}
}
}
In my view im trying to call it like:
import SwiftUI
struct ProfileView: View {
#EnvironmentObject var session: SessionStore
#ObservedObject var profileViewModel = ProfileViewModel()
func loadUserData() {
profileViewModel.LoadAUser(userId: session.userInSession!.uid)
}
var body: some View {
VStack {
Text("Edit Profile")
.fontWeight(.semibold)
.font(.system(.title, design: .rounded))
.foregroundColor(Color("startColor"))
Spacer()
VStack(alignment: .leading) {
Text("view")
}.padding()
.onAppear(perform: loadUserData)
}
}
struct ProfileView_Previews: PreviewProvider {
static var previews: some View {
ProfileView()
}
}
Im using .onAppear(perform: loadUserData) which is causing an issue - Thread1: Fatal error: Unexpectedly found nil while unwrapping
I also tried:
init() {
profileViewModel.LoadAUser(userId: session.userInSession!.uid)
}
But this also causes the same error.
The thing is I should only be able to get to this view if I'm logged in as this already works:
struct InitialView: View {
#EnvironmentObject var session: SessionStore
func listen() {
session.listenAuthenticationState()
}
var body: some View {
Group {
if session.isLoggedIn {
MainView()
} else {
NavigationView {
SignUpView()
}
}
}.onAppear(perform: listen)
}
}
I have an initialView()
struct InitialView: View {
#EnvironmentObject var session: SessionStore
func listen() {
session.listenAuthenticationState()
}
var body: some View {
Group {
if session.isLoggedIn {
MainView()
} else {
NavigationView {
SignUpView()
}
}
}.onAppear(perform: listen)
}
}
which takes you to the MainView() which has tabs to control which screen you can navigate to, then from here i can go to ProfileView()

Answer 1

Anyway by the logic of provided code it is more correct to activate isLoggedIn in
let firestoreGetUser = Firestore.firestore().collection("users").document(user.uid)
firestoreGetUser.getDocument{(document, error) in
if let dict = document?.data() {
guard let decodedUser = try? User.init(fromDictionary: dict) else { return }
self.userInSession = decodedUser
print("decoded user = \(decodedUser)")
self.isLoggedIn = true // << here !!
print("user logged in")
}
}

Answer 2

So whats worked for me is passing in Auth instead of session data:
func loadUserData() {
profileViewModel.LoadAUser(userId: Auth.auth().currentUser!.uid)
}