//
//  SimpleControllerView.swift
//  CarController
//
//  Created by Michael Pivato on 13/4/20.
//  Copyright © 2020 Michael Pivato. All rights reserved.
//

import SwiftUI

struct SimpleControllerView: View {
    @EnvironmentObject var server: ServerData
    
    // Need lazy so that we can initialise with local properties.
    @ObservedObject var grpcController: PiLoader = PiLoader()
    
    var body: some View {
        HStack{
            Slider(value: $grpcController.throttle, in: 0...1){_ in
                self.grpcController.throttle = 0.5
            }
            .rotationEffect(.degrees(270))
            
            Slider(value: $grpcController.steering, in: 0...1){_ in
                self.grpcController.steering = 0.5
            }
        }
        .onAppear(){
            self.grpcController.startUpdating()
        }
        .onDisappear(){
            // Stop the gRPC updater.
            self.grpcController.stop()
        }
    }
}

struct SimpleControllerView_Previews: PreviewProvider {
    static var previews: some View {
        SimpleControllerView()
            .environmentObject(ServerData())
    }
}