SwiftUI Task Manager

import SwiftUI

class Task: ObservableObject, Identifiable {
  let id = UUID()
  var text: String
  var done: Bool
  
  init(text: String, done: Bool = false) {
    self.text = text
    self.done = done
  }
}

class TasksViewModel: ObservableObject {
  @Published var list = [
    Task(text: "This class 'SwiftUI.AccessibilityNode' is not a known"),
    Task(text: "This class 'SwiftUI.AccessibilityNode' is not a known"),
    Task(text: "This class 'SwiftUI.AccessibilityNode' is not a known"),
    Task(text: "This class 'SwiftUI.AccessibilityNode' is not a known"),
    Task(text: "This class 'SwiftUI.AccessibilityNode' is not a known")
  ]
}

struct TasksView: View {
  
  @ObservedObject var tasks = TasksViewModel()
  
  let checkmarkImageName = "checkmark.circle.fill"
  let circleImageName = "circle"
  
  var body: some View {
    NavigationView() {
      VStack {
        ScrollView {
          VStack {
            ForEach(tasks.list) { task in
              Button(action: {
                task.done.toggle()
                print(task.done)
              }) {
                HStack {
                  Image(systemName: task.done ? self.checkmarkImageName : self.circleImageName)
                    .font(.system(size: 22))
                    .foregroundColor(Color(UIColor.systemGray2))
                    .padding(.trailing, 8)
                  
                  Text(task.text)
                    .foregroundColor(task.done ? Color(UIColor.systemGray2) : .black)
                    .strikethrough(task.done, color: Color(UIColor.systemGray2))
                  
                  Spacer()
                }
                .padding()
                .padding(.vertical, 8)
                .frame(maxWidth: .infinity)
                .background(Color(UIColor.systemGray6))
                .cornerRadius(10)
                .padding(.horizontal)
              }
            }
          }
        }
        
        Button(action: {}) {
          HStack {
            Image(systemName: "plus")
            Text("Add a task")
          }
          .font(.body)
          .foregroundColor(.black)
          .padding()
          .frame(maxWidth: .infinity)
          .background(Color(UIColor.systemGray6))
          .cornerRadius(10)
          .padding([.horizontal, .bottom])
        }
      }
      .navigationBarTitle(Text("Tasks"))
    }
  }
}

struct ContentView_Previews: PreviewProvider {
  static var previews: some View {
    TasksView()
  }
}