Im trying to set displayName to users collection and display it in textfield - google-cloud-firestore

Question

When registering a user through Apple sign in, a users collection is created in which there are userId, email and displayName fields.
When registering, the user cannot set a displayName, so the field is empty, in settings user can set displayName.
I have a test textfield and would like to keep it that way. (done and edit button next to the field, not in the bar)
#State var nameInEditMode = false
#State var name = "Example"
HStack {
if nameInEditMode {
TextField("New name", text: $name)
.padding(.leading, 5)
.onReceive(name.publisher.collect()) {
self.name = String($0.prefix(10))
}
} else {
Text(name)
}
Button(action: {
self.nameInEditMode.toggle()
}) {
Text(nameInEditMode ? "Done" : "Edit")
}
}
I tried to change displayName with:
#ObservedObject var viewModel = SetNameView()
#State var mode: Mode = .new
HStack {
if mode == .new {
TextField("New name", text: $viewModel.updatename.displayName)
.padding(.leading, 5)
.onReceive(viewModel.updatename.displayName.publisher.collect()) {
self.viewModel.updatename.displayName = String($0.prefix(10))
}
} else {
Text(viewModel.updatename.displayName)
}
Button(action: {
self.handleDoneTapped()
}) {
Text(mode == .new ? "Done" : "Edit")
}
}
func handleDoneTapped() {
self.viewModel.save()
}
}
Firestore parameters for updating data inside users collection:
class SetNameView: ObservableObject {
#Published var updatename: FBKeys
#Published var modified = false
private var cancellables = Set<AnyCancellable>()
init(updatename: FBKeys = FBKeys(displayName: "")) {
self.updatename = updatename
self.$updatename
.dropFirst()
.sink { [weak self] updatename in
self?.modified = true
}
.store(in: &self.cancellables)
}
private var db = Firestore.firestore()
private func addItem(_ updatename: FBKeys) {
do {
var addedItem = updatename
addedItem.displayName = Auth.auth().currentUser?.uid ?? ""
_ = try db.collection("users").addDocument(from: addedItem)
}
catch {
print(error)
}
}
private func updateItem(_ updatename: FBKeys) {
if let documentID = updatename.id {
do {
try db.collection("users").document(documentID).setData(from: updatename)
}
catch {
print(error)
}
}
}
public func updateOrAddItem() {
if let _ = updatename.id {
self.updateItem(self.updatename)
}
else {
addItem(updatename)
}
}
func save() {
self.updateOrAddItem()
}
}
Keys:
struct FBKeys: Codable, Hashable, Identifiable {
#DocumentID var id = UUID().uuidString
var displayName : String
var userId : String?
}
In general, when I try to substitute the viewModel, I can’t enter characters, but I can click on the edit button and already on clicking the button (with obviously impossible to enter any characters), a new document is still created in the users collection, nothing changes in the existing one user document.
Through the edit button (since it's the only one displayed) - I call the handleDoneTapped() func, which in turn calls the function inside SetNameView() -> func save() inside which has self.updateOrAddItem()
There are many problems, but the main one that haunts me is that a new document is being created. It is necessary that when entering text in the field and user saves it, the name is entered in the same user document in the displayName field.
I cleaned up the code from garbage as much as possible for better understanding.