OldContentView.swift

////
////  ContentView.swift
////  navigation
////
////  Created by Emily Markova on 7/28/23.
////
//
//import SwiftUI
//
//struct ContentView: View {
//    @StateObject var viewModel = ContentViewViewModel()
//    @StateObject var timerModel = TimerViewViewModel()
//    @StateObject var profileViewModel = ProfileViewViewModel(userName: "")
//
//    @Environment(\.scenePhase) var phase
//
//    @State var lastActiveTimeStamp: Date = Date()
//    var body: some View {
//        if viewModel.isSignedIn, !viewModel.currentUserId.isEmpty {
//            accountView
//                .environmentObject(viewModel)
//                .environmentObject(timerModel)
//        } else {
//            LoginView()
//        }
//    }
//    @ViewBuilder
//    var accountView: some View {
//        TabView {
//            ToDoListView(userId: viewModel.currentUserId)
//                .tabItem{
//                    Label("Home", systemImage:"house")
//                }
//            ProfileView(viewModel: profileViewModel)
//                .tabItem{
//                    Label("Profile", systemImage:"person.circle")
//                }
//            StudyView()
//                .tabItem{
//                    Label("Study", systemImage: "clock")
//                }
//                .onChange(of: phase) { newValue in
//                    if newValue == .background{
//                        lastActiveTimeStamp = Date()
//                    }
//                    if newValue == .active {
//                        //finding the difference
//                        let currentTimeStampDiff = Date().timeIntervalSince(lastActiveTimeStamp)
//                        if timerModel.totalSeconds - Int(currentTimeStampDiff) <= 0{
//                            timerModel.isStarted = false
//                            timerModel.totalSeconds = 0
//                            timerModel.isFinished = true
//                        } else {
//                            timerModel.totalSeconds -= Int(currentTimeStampDiff)
//                        }
//                    }
//                }
//            SearchView()
//                .tabItem{
//                    Label("Search", systemImage: "magnifyingglass.circle.fill")
//                }
//
//        }
//    }
//}
//
//
//struct ContentView_Previews: PreviewProvider {
//    static var previews: some View {
//        ContentView()
//    }
//}