using System;
using System.Threading.Tasks;
using Newtonsoft.Json;
using NSubstitute;
using NUnit.Framework;
using TINK.Model.Bikes.BikeInfoNS.BluetoothLock;
using TINK.Model.Connector;
using TINK.Model.Device;
using TINK.Model.State;
using TINK.Model.User;
using TINK.Repository.Exception;
using TINK.Repository.Response;
using TINK.Services.BluetoothLock;
using TINK.Services.BluetoothLock.Exception;
using TINK.Services.BluetoothLock.Tdo;
using TINK.Services.Geolocation;
using TINK.View;
using TINK.ViewModel;
using TINK.ViewModel.Bikes;
using TINK.ViewModel.Bikes.Bike.BluetoothLock.RequestHandler;

namespace TestTINKLib.Fixtures.ObjectTests.ViewModel.Bikes.Bike.BluetoothLock.RequestHandler
{
	public class TestReservedDisconnected
	{
		/// <summary>
		/// Test construction of object.
		/// </summary>
		[Test]
		public void Testctor()
		{
			var handler = new ReservedDisconnected(
				Substitute.For<IBikeInfoMutable>(),
				() => true, // isConnectedDelegate
				(isConnexted) => Substitute.For<IConnector>(),
				Substitute.For<IGeolocationService>(),
				Substitute.For<ILocksService>(),
				() => Substitute.For<IPollingUpdateTaskManager>(),
				Substitute.For<ISmartDevice>(),
				Substitute.For<IViewService>(),
				Substitute.For<IBikesViewModel>(),
				Substitute.For<IUser>());

			// Verify prerequisites.
			Assert.AreEqual("Cancel bike reservation", handler.ButtonText);
			Assert.IsTrue(handler.IsButtonVisible);
			Assert.AreEqual("Search lock", handler.LockitButtonText);
			Assert.IsTrue(handler.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Cancel reservation.
		/// Comment: User deceide to abort cancelling (user is ased whether to really cancel)
		/// Final state: Same as initial state.
		/// </summary>
		[Test]
		public void TestCancelReservationCancel()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedDisconnected(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			bike.Id.Returns("0");

			viewService.DisplayAlert(string.Empty, string.Format("Cancel reservation for bike {0}?", "Nr. 0"), "Yes", "No").Returns(Task.FromResult(false));

			var subsequent = handler.HandleRequestOption1().Result;

			// Verify behavior
			Received.InOrder(() =>
			{
				bikesViewModel.Received(1).IsIdle = false; // GUI must be locked
				viewService.DisplayAlert(string.Empty, string.Format("Cancel reservation for bike {0}?", "Nr. 0"), "Yes", "No");
				bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
			});

			// Verify state after action
			Assert.AreEqual("Cancel bike reservation", subsequent.ButtonText);
			Assert.IsTrue(subsequent.IsButtonVisible);
			Assert.AreEqual("Search lock", subsequent.LockitButtonText);
			Assert.IsTrue(subsequent.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Cancel reservation.
		/// Final state: Disposable.
		/// </summary>
		[Test]
		public void TestCancelReservation()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedDisconnected(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			bike.Id.Returns("0");

			viewService.DisplayAlert(string.Empty, string.Format("Cancel reservation for bike {0}?", "Nr. 0"), "Yes", "No").Returns(Task.FromResult(true));
			bike.State.Value.Returns(InUseStateEnum.Disposable); // Reqesthandler factory queries state to create appropriate request handler object.
			bike.LockInfo.State.Returns(LockingState.UnknownDisconnected); // Requesthandler factory queries lock state to create appropriate request handler object.

			var subsequent = handler.HandleRequestOption1().Result;

			// Verify behavior
			Received.InOrder(() =>
			{
				bikesViewModel.Received(1).IsIdle = false; // GUI must be locked
				bikesViewModel.ActionText = "One moment please...";
				pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action
				bikesViewModel.ActionText = "Canceling reservation...";
				connector.Command.DoCancelReservation(bike); // Booking must be performed
				bikesViewModel.ActionText = "Updating...";
				pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
				bikesViewModel.ActionText = string.Empty;
				bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
			});

			// Verify state after action
			Assert.AreEqual("Reserve bike", subsequent.ButtonText);
			Assert.IsTrue(subsequent.IsButtonVisible);
			Assert.AreEqual("DisposableDisconnected", subsequent.LockitButtonText);
			Assert.IsFalse(subsequent.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Cancel reservation.
		/// Comment: Exception is thrown.
		/// Final state: Same as initial state.
		/// </summary>
		[Test]
		public void TestCancelReservationDoCancelReservationInvalidAuthorizationResponseException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedDisconnected(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			bike.Id.Returns("0");

			viewService.DisplayAlert(string.Empty, string.Format("Cancel reservation for bike {0}?", "Nr. 0"), "Yes", "No").Returns(Task.FromResult(true));

			var l_oResponse = JsonConvert.DeserializeObject<AuthorizationResponse>(@"
                {
                      ""response"" : ""authorization"",
                      ""authcookie"" : ""4da3044c8657a04ba60e2eaa753bc51a"",
                      ""user_group"" : [ ""TINK"", ""Konrad"" ],
                      ""response_state"" : ""OK"",
                      ""apiserver"" : ""https://tinkwwp.copri-bike.de""
                   }");

			connector.Command.DoCancelReservation(bike).Returns(x => throw new InvalidAuthorizationResponseException("mustermann@server.de", l_oResponse));
			bike.State.Value.Returns(InUseStateEnum.Reserved); // Reqesthandler factory queries state to create appropriate request handler object.
			bike.LockInfo.State.Returns(LockingState.UnknownDisconnected); // Requesthandler factory queries lock state to create appropriate request handler object.

			var subsequent = handler.HandleRequestOption1().Result;

			// Verify behavior
			Received.InOrder(() =>
			{
				bikesViewModel.Received(1).IsIdle = false; // GUI must be locked
				bikesViewModel.ActionText = "One moment please...";
				pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action
				bikesViewModel.ActionText = "Canceling reservation...";
				connector.Command.DoCancelReservation(bike); // Booking must be performed
				bikesViewModel.ActionText = string.Empty;
				viewService.DisplayAlert(
					"Error when canceling the reservation!",
					"Can not login user mustermann@server.de. Mail address unknown or password invalid.",
					"OK");
				bikesViewModel.ActionText = "Updating...";
				pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
				bikesViewModel.ActionText = string.Empty;
				bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
			});

			// Verify state after action
			Assert.AreEqual("Cancel bike reservation", subsequent.ButtonText);
			Assert.IsTrue(subsequent.IsButtonVisible);
			Assert.AreEqual("Search lock", subsequent.LockitButtonText);
			Assert.IsTrue(subsequent.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Cancel reservation.
		/// Comment: Canceling reservation fails.
		/// Final state: Same as initial state.
		/// </summary>
		[Test]
		public void TestCancelReservationDoCancelReservationWebConnectFailureException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedDisconnected(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			bike.Id.Returns("0");

			viewService.DisplayAlert(string.Empty, string.Format("Cancel reservation for bike {0}?", "Nr. 0"), "Yes", "No").Returns(Task.FromResult(true));

			connector.Command.DoCancelReservation(bike).Returns(x => throw new WebConnectFailureException("Context info", new Exception("chub")));
			bike.State.Value.Returns(InUseStateEnum.Reserved); // Reqesthandler factory queries state to create appropriate request handler object.
			bike.LockInfo.State.Returns(LockingState.UnknownDisconnected); // Requesthandler factory queries lock state to create appropriate request handler object.

			var subsequent = handler.HandleRequestOption1().Result;

			// Verify behavior
			Received.InOrder(() =>
			{
				bikesViewModel.Received(1).IsIdle = false; // GUI must be locked
				bikesViewModel.ActionText = "One moment please...";
				pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action
				bikesViewModel.ActionText = "Canceling reservation...";
				connector.Command.DoCancelReservation(bike); // Booking must be performed
				bikesViewModel.ActionText = string.Empty;
				viewService.DisplayAlert(
					"Connection error when canceling the reservation!",
					"Context info\r\nIs WIFI/mobile network available and mobile data activated?",
					"OK");
				bikesViewModel.ActionText = "Updating...";
				pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
				bikesViewModel.ActionText = string.Empty;
				bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
			});

			// Verify state after action
			Assert.AreEqual("Cancel bike reservation", subsequent.ButtonText);
			Assert.IsTrue(subsequent.IsButtonVisible);
			Assert.AreEqual("Search lock", subsequent.LockitButtonText);
			Assert.IsTrue(subsequent.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Cancel reservation.
		/// Comment: Canceling reservation fails.
		/// Final state: Same as initial state.
		/// </summary>
		[Test]
		public void TestCancelReservationDoCancelReservationException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedDisconnected(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			bike.Id.Returns("0");

			viewService.DisplayAlert(string.Empty, string.Format("Cancel reservation for bike {0}?", "Nr. 0"), "Yes", "No").Returns(Task.FromResult(true));

			connector.Command.DoCancelReservation(bike).Returns(x => throw new Exception("Exception message."));
			bike.State.Value.Returns(InUseStateEnum.Reserved); // Reqesthandler factory queries state to create appropriate request handler object.
			bike.LockInfo.State.Returns(LockingState.UnknownDisconnected); // Requesthandler factory queries lock state to create appropriate request handler object.

			var subsequent = handler.HandleRequestOption1().Result;

			// Verify behavior
			Received.InOrder(() =>
			{
				bikesViewModel.Received(1).IsIdle = false; // GUI must be locked
				bikesViewModel.ActionText = "One moment please...";
				pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action
				bikesViewModel.ActionText = "Canceling reservation...";
				connector.Command.DoCancelReservation(bike); // Booking must be performed
				bikesViewModel.ActionText = string.Empty;
				viewService.DisplayAlert(
					"Error when canceling the reservation!",
					"Exception message.",
					"OK");
				bikesViewModel.ActionText = "Updating...";
				pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
				bikesViewModel.ActionText = string.Empty;
				bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
			});

			// Verify state after action
			Assert.AreEqual("Cancel bike reservation", subsequent.ButtonText);
			Assert.IsTrue(subsequent.IsButtonVisible);
			Assert.AreEqual("Search lock", subsequent.LockitButtonText);
			Assert.IsTrue(subsequent.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Search.
		/// Final state: reserved closed
		/// </summary>
		[Test]
		public void TestSearch()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();
			var timeOuts = Substitute.For<ITimeOutProvider>();

			var handler = new ReservedDisconnected(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			bike.Id.Returns("0");

			locks.ConnectAsync(Arg.Any<LockInfoAuthTdo>(), Arg.Any<TimeSpan>())
				.Returns(Task.FromResult(new LockInfoTdo.Builder { State = LockitLockingState.Closed }.Build()));

			locks.TimeOut.Returns(timeOuts);

			viewService.DisplayAlert(string.Empty, string.Format("Rent bike {0} and open lock?", "Nr. 0"), "Yes", "No").Returns(Task.FromResult(true));

			locks[0].OpenAsync()
				.Returns(Task.FromResult((LockitLockingState?)LockitLockingState.Open)); // Return lock state indicating success

			bike.State.Value.Returns(InUseStateEnum.Booked); // Booking call leads to setting of state to booked.

			var subsequent = handler.HandleRequestOption2().Result;

			// Verify behavior
			Received.InOrder(() =>
			{
				bikesViewModel.Received(1).IsIdle = false; // GUI must be locked
				bikesViewModel.ActionText = "One moment please...";
				pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action
				bikesViewModel.ActionText = "Request server...";
				connector.Command.CalculateAuthKeys(bike);
				bikesViewModel.ActionText = "Searching lock...";
				locks.ConnectAsync(Arg.Any<LockInfoAuthTdo>(), Arg.Any<TimeSpan>());
				bikesViewModel.ActionText = string.Empty;
				bikesViewModel.ActionText = "Renting bike...";
				connector.Command.DoBookAsync(bike, LockingAction.Open); // Booking must be performed
				bikesViewModel.ActionText = "<h4><b>Lock is opening.<br/>Please wait until it is completely open.</b></h4>";
				locks.Received()[0].OpenAsync(); // Lock must be opened
				bikesViewModel.ActionText = "Reading charging level...";
				locks[0].GetBatteryPercentageAsync();
				bikesViewModel.ActionText = "Updating lock state...";
				connector.Command.UpdateLockingStateAsync(bike, null);
				bikesViewModel.ActionText = "Updating...";
				pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
				bikesViewModel.ActionText = string.Empty;
				bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
			});

			// Verify state after action
			Assert.AreEqual("Close lock & end rental", subsequent.ButtonText);
			Assert.IsTrue(subsequent.IsButtonVisible);
			Assert.AreEqual("Close lock", subsequent.LockitButtonText);
			Assert.IsTrue(subsequent.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Search.
		/// Final state: Same as initial state.
		/// </summary>
		[Test]
		public void TestSearchCalculateAuthKeysFailsWebConnectFailureException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedDisconnected(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			connector.Command.CalculateAuthKeys(bike).Returns(x => throw new WebConnectFailureException("Context info.", new Exception("Tst")));

			bike.State.Value.Returns(InUseStateEnum.Booked);
			bike.LockInfo.State.Returns(LockingState.UnknownFromHardwareError);

			var subsequent = handler.HandleRequestOption2().Result;

			// Verify behavior
			Received.InOrder(() =>
			{
				bikesViewModel.Received(1).IsIdle = false; // GUI must be locked
				bikesViewModel.ActionText = "One moment please...";
				pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action
				bikesViewModel.ActionText = "Request server...";
				bikesViewModel.ActionText = string.Empty;
				viewService.DisplayAlert("Error when connecting to lock!", "Internet must be reachable to connect to lock of reserved bike. Please establish an Internet connection!\r\nContext info.\r\nIs WIFI/mobile network available and mobile data activated?", "OK");
				bikesViewModel.ActionText = "Updating...";
				pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
				bikesViewModel.ActionText = string.Empty;
				bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
			});

			// Verify state after action
			Assert.AreEqual("Cancel bike reservation", handler.ButtonText);
			Assert.IsTrue(handler.IsButtonVisible);
			Assert.AreEqual("Search lock", handler.LockitButtonText);
			Assert.IsTrue(handler.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Search.
		/// Final state: Same as initial state.
		/// </summary>
		[Test]
		public void TestSearchCalculateAuthKeysFailsException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedDisconnected(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			connector.Command.CalculateAuthKeys(bike).Returns(x => throw new Exception("Exception message."));

			bike.State.Value.Returns(InUseStateEnum.Booked);
			bike.LockInfo.State.Returns(LockingState.UnknownFromHardwareError);

			var subsequent = handler.HandleRequestOption2().Result;

			// Verify behavior
			Received.InOrder(() =>
			{
				bikesViewModel.Received(1).IsIdle = false; // GUI must be locked
				bikesViewModel.ActionText = "One moment please...";
				pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action
				bikesViewModel.ActionText = "Request server...";
				bikesViewModel.ActionText = string.Empty;
				viewService.DisplayAlert("Error when connecting to lock!", "Communication error during lock search.\r\nException message.", "OK");
				bikesViewModel.ActionText = "Updating...";
				pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
				bikesViewModel.ActionText = string.Empty;
				bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
			});

			// Verify state after action
			Assert.AreEqual("Cancel bike reservation", handler.ButtonText);
			Assert.IsTrue(handler.IsButtonVisible);
			Assert.AreEqual("Search lock", handler.LockitButtonText);
			Assert.IsTrue(handler.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Search.
		/// Final state: Same as initial state.
		/// </summary>
		[Test]
		public void TestSearchConnectFailsOutOfReachException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();
			var timeOuts = Substitute.For<ITimeOutProvider>();

			var handler = new ReservedDisconnected(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			locks.ConnectAsync(Arg.Any<LockInfoAuthTdo>(), Arg.Any<TimeSpan>())
				.Returns<Task<LockInfoTdo>>(x => { throw new OutOfReachException(); });
			locks.TimeOut.Returns(timeOuts);

			bike.State.Value.Returns(InUseStateEnum.Booked);

			var subsequent = handler.HandleRequestOption2().Result;

			// Verify behavior
			Received.InOrder(() =>
			{
				bikesViewModel.Received(1).IsIdle = false; // GUI must be locked
				bikesViewModel.ActionText = "One moment please...";
				pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action
				bikesViewModel.ActionText = "Request server...";
				connector.Command.CalculateAuthKeys(bike);
				bikesViewModel.ActionText = "Searching lock...";
				locks.ConnectAsync(Arg.Any<LockInfoAuthTdo>(), Arg.Any<TimeSpan>());
				bikesViewModel.ActionText = string.Empty;
				viewService.DisplayAlert(
					"Error when connecting to lock!",
					"Lock can only be found when reserved bike is nearby.",
					"Retry",
					"Cancel");
				bikesViewModel.ActionText = "Updating...";
				pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
				bikesViewModel.ActionText = string.Empty;
				bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
			});

			// Verify state after action
			Assert.AreEqual("Cancel bike reservation", handler.ButtonText);
			Assert.IsTrue(handler.IsButtonVisible);
			Assert.AreEqual("Search lock", handler.LockitButtonText);
			Assert.IsTrue(handler.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Search.
		/// Final state: Same as initial state.
		/// </summary>
		[Test]
		public void TestSearchConnectFailsException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();
			var timeOuts = Substitute.For<ITimeOutProvider>();

			var handler = new ReservedDisconnected(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);


			locks.ConnectAsync(Arg.Any<LockInfoAuthTdo>(), Arg.Any<TimeSpan>())
				.Returns<Task<LockInfoTdo>>(x => throw new Exception("Execption message."));
			locks.TimeOut.Returns(timeOuts);

			bike.State.Value.Returns(InUseStateEnum.Booked);

			var subsequent = handler.HandleRequestOption2().Result;

			// Verify behavior
			Received.InOrder(() =>
			{
				bikesViewModel.Received(1).IsIdle = false; // GUI must be locked
				bikesViewModel.ActionText = "One moment please...";
				pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action
				bikesViewModel.ActionText = "Request server...";
				connector.Command.CalculateAuthKeys(bike);
				bikesViewModel.ActionText = "Searching lock...";
				locks.ConnectAsync(Arg.Any<LockInfoAuthTdo>(), Arg.Any<TimeSpan>());
				bikesViewModel.ActionText = string.Empty;
				viewService.DisplayAdvancedAlert(
					"Error when connecting to lock!",
					"Your mobile device does not connect to the bike lock. Please step as close as possible to the bike and try again.",
					"",
					"Retry",
					"Cancel");
				bikesViewModel.ActionText = "Updating...";
				pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
				bikesViewModel.ActionText = string.Empty;
				bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
			});

			// Verify state after action
			Assert.AreEqual("Cancel bike reservation", handler.ButtonText);
			Assert.IsTrue(handler.IsButtonVisible);
			Assert.AreEqual("Search lock", handler.LockitButtonText);
			Assert.IsTrue(handler.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Search.
		/// Final state: Same as initial state.
		/// </summary>
		[Test]
		public void TestSearchConnectNotOpen()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();
			var timeOuts = Substitute.For<ITimeOutProvider>();

			var handler = new ReservedDisconnected(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			locks.ConnectAsync(Arg.Any<LockInfoAuthTdo>(), Arg.Any<TimeSpan>())
				.Returns(new LockInfoTdo.Builder { State = null }.Build());
			locks.TimeOut.Returns(timeOuts);

			bike.State.Value.Returns(InUseStateEnum.Booked);

			var subsequent = handler.HandleRequestOption2().Result;

			// Verify behavior
			Received.InOrder(() =>
			{
				bikesViewModel.Received(1).IsIdle = false; // GUI must be locked
				bikesViewModel.ActionText = "One moment please...";
				pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action
				bikesViewModel.ActionText = "Request server...";
				connector.Command.CalculateAuthKeys(bike);
				bikesViewModel.ActionText = "Searching lock...";
				locks.ConnectAsync(Arg.Any<LockInfoAuthTdo>(), Arg.Any<TimeSpan>());
				bikesViewModel.ActionText = string.Empty;
				viewService.DisplayAlert("Error when connecting to lock!", "Lock status of the reserved bike could not be determined.", "OK");
				bikesViewModel.ActionText = "Updating...";
				pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
				bikesViewModel.ActionText = string.Empty;
				bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
			});

			// Verify state after action
			Assert.AreEqual("Cancel bike reservation", handler.ButtonText);
			Assert.IsTrue(handler.IsButtonVisible);
			Assert.AreEqual("Search lock", handler.LockitButtonText);
			Assert.IsTrue(handler.IsLockitButtonVisible);
		}
	}
}