SwiftUI MVVM architecture - ViewModel

WordsetCategoriesViewModel.swift

public protocol WordsetCategoriesViewModelProtocol: ObservableObject {
  
   var error: Error? { get set } 
   var isLoading: Bool { get set } 
  
   func syncWordsetCategories()
}


public class WordsetCategoriesViewModel: WordsetCategoriesViewModelProtocol { 
  
    @Inject private var repository: WordsetCategoryRepositoryProtocol
  
    private var disposables = Set<AnyCancellable>()

    @Published var error: Error?
    @Published var isLoading: Bool 

    public func syncWordsetCategories() {
        guard !isLoading else { return } 
        isLoading = true 
  
        repo.syncWordsetCategories()
            .sink(receiveCompletion: { [weak self] completion in
                switch completion {
                case .failure(let error):
                    self?.error = error
                case .finished:
                    break
                }
                self?.isLoading = false 
            }) { result in
                print("Synced wordset categories: \(result)")
            }
            .store(in: &disposables)
    }
}