Voodo Arch Template

1. App.swift

@main
struct mainApp: App {
    
  init() {
  // custom init if needed. Analytics setup and similar
  }
    
  var body: some Scene {
    WindowGroup {
      MainView(mainObservableObject: MainObservableObject())
    }
  }
  
}

2. MainView.swift

struct MainView: View {
  // Good resource in regards to all different propertyObservers used
  // https://www.hackingwithswift.com/books/ios-swiftui/sharing-swiftui-state-with-stateobject
  // https://www.hackingwithswift.com/quick-start/swiftui/all-swiftui-property-wrappers-explained-and-compared
  @StateObject var mainObservableObject: MainObservableObject
  
  var body: some View {
    DetailView(observable: mainObservableObject)
  }
    
}

3. DetailView.swift

struct DetailView: View {
    
  @ObservedObject var observable: MainObservableObject
  
  var body: some View {
    Text(observable.updatableText) 
  }
  .onAppear {
    observable.fetchNetworkData()
  }
  
}

4. MainObservableObject.swift

@MainActor
class MainObservableObject: ObservableObject {

// Data object which is usually a network manager
private var mainDataObject: MainDataObject = MainDataObject.shared
  
// All published properties we want to OBSERVE from views that hold a reference to this mainObservableObject
@Published var updatableText = "Hi There!"
  
  func fetchNetworkData() {
    Task {
      let networkData = mainDataObject.getData
      updatableText = networkData.title // here text gets updated and automatically gets refreshed in a view
        }
  }

}

5. MainDataObject.swift

class MainDataObject {
    
  static let shared = MainDataObject()
  
  func getData() async -> Data? {
    // some dummy code as it really depends on what kind of data is fetched and from where
    let response = try? await NETWORKCALL
    return response?.data
  }
  
}

6. Explanation

This example uses https://swiftuivoodo.com/ approach for SwiftUI Architecture and this is one concrete implementation of it.

There are multiple ways to assemble this architecture, which is the main and the most beautiful thing about it.
Currently I adapted it to fit my own needs, but feel free to mold it to the shape that first you best. 

I avoided viewModel naming as it confuses the hell out of me as we already have Observable object in SwiftUI
which is essentially a viewModel 😅

Feel free to reach out for any ideas or comments via twitter.com/emin_ui

p.s.
I am using the numbers in file names becuase I want to present files in a specific order,
otherwise git would have placed this explanation half-way