import SwiftUI

struct MainViewBig: View {
    var body: some View {
        NavigationView {
            SidebarView()
            Text("Master")
            Text("Detail")
        }
    }
}

struct SidebarView: View {
    @State var selection: String?
    
    @FetchRequest(entity: Vehicle.entity(), sortDescriptors: []) var vehicles: FetchedResults<Vehicle>
    
    var body: some View {
        List(selection: $selection) {
            Section("History") {
                NavigationLink(destination: VehiclesListView()) {
                    Label("All", systemImage: "car.2")
                        .badge(vehicles.count)
                }
                NavigationLink(destination: VehiclesListView()) {
                    Label("Unreconized", systemImage: "eye.slash")
                        .badge(vehicles.filter(\.unrecognized).count)
                }
                NavigationLink(destination: VehiclesListView()) {
                    Label("Outdated", systemImage: "wind")
                        .badge(vehicles.filter(\.outdated).count)
                }
            }
            .collapsible(false)
            
            Section("Other") {
                Label("Recordings", systemImage: "waveform.path")
                Label("Search", systemImage: "magnifyingglass")
            }
            .collapsible(false)
        }
        .frame(minWidth: 180)
//        .toolbar {
//            ToolbarItem(placement: .primaryAction) {
//                Button("xxx") {
//
//                }
//            }
//        }
    }
}

struct VehiclesListView: View {
    var body: some View {
        Text("Vehicles list")
            .toolbar {
                ToolbarItem(placement: .primaryAction) {
                    Button("xxx") {

                    }
                }
            }
    }
}

struct MainViewBig_Previews: PreviewProvider {
    static var previews: some View {
        MainViewBig()
    }
}