using System;
using System.Threading.Tasks;
using ShareeBike.Model.Connector;
using ShareeBike.Model.Device;
using ShareeBike.Model.User;
using ShareeBike.MultilingualResources;
using ShareeBike.Services.BluetoothLock;
using ShareeBike.Services.Geolocation;
using ShareeBike.View;
using IBikeInfoMutable = ShareeBike.Model.Bikes.BikeInfoNS.BluetoothLock.IBikeInfoMutable;
using CloseCommand = ShareeBike.Model.Bikes.BikeInfoNS.BluetoothLock.Command.CloseCommand;
using StartRentalCommand = ShareeBike.Model.Bikes.BikeInfoNS.BikeNS.Command.StartRentalCommand;
using static ShareeBike.ViewModel.Bikes.Bike.BluetoothLock.RequestHandlerFactory;

namespace ShareeBike.ViewModel.Bikes.Bike.BluetoothLock.RequestHandler
{
	/// <summary> Bike is reserved, lock is open and connected to app. </summary>
	/// <remarks> 
	/// This state might occur when a ILOCKIT was manually opened (color code) and app connects afterwards. 
	/// This should never during ILOCKIT is connected to app because
	/// - manually opening lock is not possible when lock is connected
	/// - two devices can not simultaneously connect to same lock.
	public class ReservedOpen : Base, IRequestHandler, CloseCommand.ICloseCommandListener, StartRentalCommand.IStartRentalCommandListener
	{
		/// <param name="smartDevice">Provides info about the smart device (phone, tablet, ...)</param>
		/// <param name="bikesViewModel">View model to be used for progress report and unlocking/ locking view.</param>
		public ReservedOpen(
		   IBikeInfoMutable selectedBike,
		   Func<bool> isConnectedDelegate,
		   Func<bool, IConnector> connectorFactory,
		   IGeolocationService geolocation,
		   ILocksService lockService,
		   Func<IPollingUpdateTaskManager> viewUpdateManager,
		   ISmartDevice smartDevice,
		   IViewService viewService,
		   IBikesViewModel bikesViewModel,
		   IUser activeUser) : base(
		   selectedBike,
		   AppResources.ActionCloseLock, // Close Lock
		   true, // Show button
		   isConnectedDelegate,
		   connectorFactory,
		   geolocation,
		   lockService,
		   viewUpdateManager,
		   smartDevice,
		   viewService,
		   bikesViewModel,
		   activeUser)
		{
			LockitButtonText = AppResources.ActionRentBike; // Rent bike
			IsLockitButtonVisible = true; // Show button

			_closeLockActionViewModel = new CloseLockActionViewModel<ReservedOpen>(
				selectedBike,
				viewUpdateManager,
				viewService,
				bikesViewModel);

			_startRentalActionViewModel = new StartReservationOrRentalActionViewModel<ReservedOpen>(
				selectedBike,
				viewUpdateManager,
				viewService,
				bikesViewModel);
		}

		/// <summary>
		/// Holds the view model for close action.
		/// </summary>
		private readonly CloseLockActionViewModel<ReservedOpen> _closeLockActionViewModel;

		/// <summary>
		/// Processes the close lock progress.
		/// </summary>
		/// <remarks>
		/// Only used for testing.
		/// </remarks>
		/// <param name="step">Current step to process.</param>
		public void ReportStep(CloseCommand.Step step) => _closeLockActionViewModel?.ReportStep(step);

		/// <summary>
		/// Processes the close lock state.
		/// </summary>
		/// <remarks>
		/// Only used for testing.
		/// </remarks>
		/// <param name="state">State to process.</param>
		/// <param name="details">Textual details describing current state.</param>
		public async Task ReportStateAsync(CloseCommand.State state, string details) => await _closeLockActionViewModel.ReportStateAsync(state, details);


		/// <summary>
		/// Holds the view model for requesting a bike action.
		/// </summary>
		private readonly StartReservationOrRentalActionViewModel<ReservedOpen> _startRentalActionViewModel;

		/// <summary>
		/// Processes the renting a bike progress.
		/// </summary>
		/// <remarks>
		/// Only used for testing.
		/// </remarks>
		/// <param name="step">Current step to process.</param>
		public void ReportStep(StartRentalCommand.Step step) => _startRentalActionViewModel?.ReportStep(step);

		/// <summary>
		/// Processes the renting a bike state.
		/// </summary>
		/// <remarks>
		/// Only used for testing.
		/// </remarks>
		/// <param name="state">State to process.</param>
		/// <param name="details">Textual details describing current state.</param>
		public async Task ReportStateAsync(StartRentalCommand.State state, string details) => await _startRentalActionViewModel.ReportStateAsync(state, details);


		/// <summary> Close lock. </summary>
		public async Task<IRequestHandler> HandleRequestOption1()
		{
			await _closeLockActionViewModel.CloseLockAsync();
			return Create(
				SelectedBike,
				IsConnectedDelegate,
				ConnectorFactory,
				GeolocationService,
				LockService,
				ViewUpdateManager,
				SmartDevice,
				ViewService,
				BikesViewModel,
				ActiveUser);
		}

		/// <summary> Start Rental. </summary>
		/// <returns></returns>
		public async Task<IRequestHandler> HandleRequestOption2()
		{
			await _startRentalActionViewModel.StartReservationOrRentalAsync();
			return Create(
				SelectedBike,
				IsConnectedDelegate,
				ConnectorFactory,
				GeolocationService,
				LockService,
				ViewUpdateManager,
				SmartDevice,
				ViewService,
				BikesViewModel,
				ActiveUser);
		}
	}
}