using System;
using ShareeBike.Model.Connector;
using ShareeBike.Model.Device;
using ShareeBike.Model.User;
using ShareeBike.View;

namespace ShareeBike.ViewModel.Bikes.Bike.BC.RequestHandler
{
	public abstract class Base<T>
	{
		/// <summary>
		/// View model to be used by subclasses for progress report and unlocking/ locking view.
		/// </summary>
		public IBikesViewModel BikesViewModel { get; set; }

		/// <summary>
		/// Gets a value indicating whether the button to reserve bike is visible or not.
		/// </summary>
		public bool IsButtonVisible { get; }

		/// <summary>
		/// Gets the name of the button when bike is disposable.
		/// </summary>
		public string ButtonText { get; }

		/// <summary> Provides info about the smart device (phone, tablet, ...).</summary>
		protected ISmartDevice SmartDevice;

		/// <summary>
		/// Reference on view service to show modal notifications and to perform navigation.
		/// </summary>
		protected IViewService ViewService { get; }

		/// <summary> Provides a connector object.</summary>
		protected Func<bool, IConnector> ConnectorFactory { get; }

		/// <summary> Delegate to retrieve connected state. </summary>
		protected Func<bool> IsConnectedDelegate { get; }

		/// <summary> Object to manage update of view model objects from Copri.</summary>
		protected Func<IPollingUpdateTaskManager> ViewUpdateManager { get; }

		/// <summary> Reference on the user </summary>
		protected IUser ActiveUser { get; }

		/// <summary> Bike to display. </summary>
		protected T SelectedBike { get; }

		/// <summary>Holds the is connected state. </summary>
		private bool isConnected;

		/// <summary>Gets the is connected state. </summary>
		public bool IsConnected
		{
			get => isConnected;
			set
			{
				if (value == isConnected)
					return;

				isConnected = value;
			}
		}

		/// <summary>
		/// Constructs the request handler base.
		/// </summary>
		/// <param name="selectedBike">Bike which is reserved or for which reservation is canceled.</param>
		/// <param name="smartDevice">Provides info about the smart device (phone, tablet, ...).</param>
		/// <param name="bikesViewModel">View model to be used by subclasses for progress report and unlocking/ locking view.</param>
		public Base(
			T selectedBike,
			string buttonText,
			bool isCopriButtonVisible,
			Func<bool> isConnectedDelegate,
			Func<bool, IConnector> connectorFactory,
			Func<IPollingUpdateTaskManager> viewUpdateManager,
			ISmartDevice smartDevice,
			IViewService viewService,
			IBikesViewModel bikesViewModel,
			IUser activeUser)
		{
			ButtonText = buttonText;
			IsButtonVisible = isCopriButtonVisible;
			SelectedBike = selectedBike;
			IsConnectedDelegate = isConnectedDelegate;
			ConnectorFactory = connectorFactory;
			ViewUpdateManager = viewUpdateManager;
			SmartDevice = smartDevice;
			ViewService = viewService;
			ActiveUser = activeUser;
			BikesViewModel = bikesViewModel
				?? throw new ArgumentException($"Can not construct {GetType().Name}-object. {nameof(bikesViewModel)} must not be null.");
		}
	}
}