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
{
    [TestFixture]
    public class TestReservedOpen
    {
        /// <summary>
        /// Test construction of object.
        /// </summary>
        [Test]
        public void Testctor()
        {
            var handler = new ReservedOpen(
                Substitute.For<IBikeInfoMutable>(),
                () => true, // isConnectedDelegate
                (isConnexted) => Substitute.For<IConnector>(),
                Substitute.For<IGeolocation>(),
                Substitute.For<ILocksService>(),
                () => Substitute.For<IPollingUpdateTaskManager>(),
                Substitute.For<ISmartDevice>(),
                Substitute.For<IViewService>(),
                Substitute.For<IBikesViewModel>(),
                Substitute.For<IUser>());

            // Verify prerequisites.
            Assert.AreEqual("Rad zurückgeben oder mieten", handler.ButtonText);
            Assert.IsTrue(handler.IsButtonVisible);
            Assert.AreEqual("Alarm/ Sounds verwalten", handler.LockitButtonText);
            Assert.IsFalse(handler.IsLockitButtonVisible);
        }

        /// <summary>
        /// Use case: User books bike.
        /// Final state: Booked.
        /// </summary>
        [Test]
        public void TestBook()
        {
            var bike = Substitute.For<IBikeInfoMutable>();
            var connector = Substitute.For<IConnector>();
            var command = Substitute.For<ICommand>();
            var geolocation = Substitute.For<IGeolocation>();
            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 ReservedOpen(
                bike,
                () => true, // isConnectedDelegate
                (isConnexted) => connector,
                geolocation,
                locks,
                () => pollingManager,
                Substitute.For<ISmartDevice>(),
                viewService,
                bikesViewModel,
                activeUser);

            viewService.DisplayAlert(string.Empty, "Rad Nr. 0  abschließen und zurückgeben oder Rad mieten?", "Zurückgeben", "Mieten").Returns(Task.FromResult(false));

            bike.State.Value.Returns(InUseStateEnum.Booked); // Reqesthandler factory queries state to create appropriate request handler object.
            bike.LockInfo.State.Returns(LockingState.Open); // Requsthandler factory queries lock state to create appropriate request handler object.

            var subsequent = handler.HandleRequestOption1().Result;

            // Verify behaviour
            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 = "Reading charging level...";
                locks[0].GetBatteryPercentageAsync();
                bikesViewModel.ActionText = "Renting bike...";
                connector.Command.DoBook(bike);
                bikesViewModel.ActionText = "Updating...";
                pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
                bikesViewModel.ActionText = "";
                bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
            });

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

        /// <summary>
        /// Use case: User books bike.
        /// Final state: Reserved closed.
        /// </summary>
        [Test]
        public void TestBookBookFailsWebConnectFailureException()
        {
            var bike = Substitute.For<IBikeInfoMutable>();
            var connector = Substitute.For<IConnector>();
            var command = Substitute.For<ICommand>();
            var geolocation = Substitute.For<IGeolocation>();
            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 ReservedOpen(
                bike,
                () => true, // isConnectedDelegate
                (isConnexted) => connector,
                geolocation,
                locks,
                () => pollingManager,
                Substitute.For<ISmartDevice>(),
                viewService,
                bikesViewModel,
                activeUser);

            viewService.DisplayAlert(string.Empty, "Rad Nr. 0  abschließen und zurückgeben oder Rad mieten?", "Zurückgeben", "Mieten").Returns(Task.FromResult(false));

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

            locks[0].CloseAsync().Returns(LockitLockingState.Closed);

            bike.State.Value.Returns(InUseStateEnum.Reserved); // Reqesthandler factory queries state to create appropriate request handler object.

            var subsequent = handler.HandleRequestOption1().Result;

            // Verify behaviour
            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 = "Reading charging level...";
                locks[0].GetBatteryPercentageAsync();
                bikesViewModel.ActionText = "Renting bike...";
                connector.Command.DoBook(bike);
                bikesViewModel.ActionText = "";
                viewService.DisplayAlert(
                    "Connection error when renting the bike!",
                    string.Format("Attention: Lock is closed!\r\n{0}\r\n{1}", "Context info.", "Is WIFI available/ mobile networt available and mobile data activated / ... ?"),
                    "OK");
                bikesViewModel.ActionText = "Wiederverschließe Schloss...";
                locks[0].CloseAsync();
                bikesViewModel.ActionText = "Updating...";
                pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
                bikesViewModel.ActionText = "";
                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("Open lock & rent bike", subsequent.LockitButtonText);
            Assert.IsTrue(subsequent.IsLockitButtonVisible);
        }

        /// <summary>
        /// Use case: User books bike.
        /// Final state: Reserved closed.
        /// </summary>
        [Test]
        public void TestBookBookFailsException()
        {
            var bike = Substitute.For<IBikeInfoMutable>();
            var connector = Substitute.For<IConnector>();
            var command = Substitute.For<ICommand>();
            var geolocation = Substitute.For<IGeolocation>();
            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 ReservedOpen(
                bike,
                () => true, // isConnectedDelegate
                (isConnexted) => connector,
                geolocation,
                locks,
                () => pollingManager,
                Substitute.For<ISmartDevice>(),
                viewService,
                bikesViewModel,
                activeUser);

            viewService.DisplayAlert(string.Empty, "Rad Nr. 0  abschließen und zurückgeben oder Rad mieten?", "Zurückgeben", "Mieten").Returns(Task.FromResult(false));

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

            locks[0].CloseAsync().Returns(LockitLockingState.Closed);

            bike.State.Value.Returns(InUseStateEnum.Reserved); // Reqesthandler factory queries state to create appropriate request handler object.

            var subsequent = handler.HandleRequestOption1().Result;

            // Verify behaviour
            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 = "Reading charging level...";
                locks[0].GetBatteryPercentageAsync();
                bikesViewModel.ActionText = "Renting bike...";
                connector.Command.DoBook(bike);
                bikesViewModel.ActionText = "";
                viewService.DisplayAlert("Error when renting the bike!", "Attention: Lock is closed!\r\nException message.", "OK");
                bikesViewModel.ActionText = "Wiederverschließe Schloss...";
                locks[0].CloseAsync();
                bikesViewModel.ActionText = "Updating...";
                pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
                bikesViewModel.ActionText = "";
                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("Open lock & rent bike", subsequent.LockitButtonText);
            Assert.IsTrue(subsequent.IsLockitButtonVisible);
        }

        /// <summary>
        /// Use case: Close lock and cancel reservation.
        /// Final state: Booked.
        /// </summary>
        [Test]
        public void TestCloseLockAndCancelReservation()
        {
            var bike = Substitute.For<IBikeInfoMutable>();
            var connector = Substitute.For<IConnector>();
            var command = Substitute.For<ICommand>();
            var geolocation = Substitute.For<IGeolocation>();
            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 ReservedOpen(
                bike,
                () => true, // isConnectedDelegate
                (isConnexted) => connector,
                geolocation,
                locks,
                () => pollingManager,
                Substitute.For<ISmartDevice>(),
                viewService,
                bikesViewModel,
                activeUser);

            bike.Id.Returns("0");

            viewService.DisplayAlert(string.Empty, "Rad Nr. 0 abschließen und zurückgeben oder Rad mieten?", "Zurückgeben", "Mieten").Returns(Task.FromResult(true));

            locks[0].CloseAsync().Returns(LockitLockingState.Closed);

            bike.State.Value.Returns(InUseStateEnum.Disposable); // Reqesthandler factory queries state to create appropriate request handler object.

            var subsequent = handler.HandleRequestOption1().Result;

            // Verify behaviour
            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 = "Closing lock...";
                locks[0].CloseAsync();
                bikesViewModel.ActionText = "Canceling reservation...";
                connector.Command.DoCancelReservation(bike);
                bikesViewModel.ActionText = "Disconnecting lock...";
                locks.DisconnectAsync(Arg.Any<int>(), Arg.Any<Guid>());
                bikesViewModel.ActionText = "Updating...";
                pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
                bikesViewModel.ActionText = "";
                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: Close lock and cancel reservation.
        /// Final state: Reserved open.
        /// </summary>
        [Test]
        public void TestCloseLockAndCancelReservationCloseFailsOutOfReachException()
        {
            var bike = Substitute.For<IBikeInfoMutable>();
            var connector = Substitute.For<IConnector>();
            var command = Substitute.For<ICommand>();
            var geolocation = Substitute.For<IGeolocation>();
            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 ReservedOpen(
                bike,
                () => true, // isConnectedDelegate
                (isConnexted) => connector,
                geolocation,
                locks,
                () => pollingManager,
                Substitute.For<ISmartDevice>(),
                viewService,
                bikesViewModel,
                activeUser);

            bike.Id.Returns("0");

            viewService.DisplayAlert(
                string.Empty,
                "Rad Nr. 0 abschließen und zurückgeben oder Rad mieten?",
                "Zurückgeben",
                "Mieten").Returns(Task.FromResult(true));

            locks[0].CloseAsync()
                .Returns<Task<LockitLockingState?>>(x => { throw new OutOfReachException(); });

            bike.State.Value.Returns(InUseStateEnum.Reserved); // Reqesthandler factory queries state to create appropriate request handler object.
            bike.LockInfo.State.Returns(LockingState.Open);

            var subsequent = handler.HandleRequestOption1().Result;

            locks.DidNotReceive().DisconnectAsync(Arg.Any<int>(), Arg.Any<Guid>());

            // Verify behaviour
            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 = "Closing lock...";
                locks[0].CloseAsync();
                bikesViewModel.ActionText = "";
                viewService.DisplayAlert(
                    "Lock can not be closed!",
                    "Lock cannot be closed until bike is near.\r\nPlease try again to close bike or report bike to support!",
                    "OK");

                bikesViewModel.ActionText = "Updating...";
                pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
                bikesViewModel.ActionText = "";
                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: Close lock and cancel reservation.
        /// Final state: Same as initial state.
        /// </summary>
        [Test]
        public void TestCloseLockAndCancelReservationCloseFailsException()
        {
            var bike = Substitute.For<IBikeInfoMutable>();
            var connector = Substitute.For<IConnector>();
            var command = Substitute.For<ICommand>();
            var geolocation = Substitute.For<IGeolocation>();
            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 ReservedOpen(
                bike,
                () => true, // isConnectedDelegate
                (isConnexted) => connector,
                geolocation,
                locks,
                () => pollingManager,
                Substitute.For<ISmartDevice>(),
                viewService,
                bikesViewModel,
                activeUser);

            bike.Id.Returns("0");

            viewService.DisplayAlert(
                string.Empty,
                "Rad Nr. 0 abschließen und zurückgeben oder Rad mieten?",
                "Zurückgeben",
                "Mieten").Returns(Task.FromResult(true));

            locks[0].CloseAsync()
                .Returns<Task<LockitLockingState?>>(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.Open);

            var subsequent = handler.HandleRequestOption1().Result;

            locks.DidNotReceive().DisconnectAsync(Arg.Any<int>(), Arg.Any<Guid>());

            // Verify behaviour
            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 = "Closing lock...";
                locks[0].CloseAsync();
                bikesViewModel.ActionText = "";
                viewService.DisplayAlert(
                    "Lock can not be closed!",
                    "Please try to lock again or report bike to support!\r\nException message.",
                    "OK");
                bikesViewModel.ActionText = "Updating...";
                pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
                bikesViewModel.ActionText = "";
                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: Close lock and cancel reservation.
        /// Final state: Reserved closed.
        /// </summary>
        [Test]
        public void TestCloseLockAndCancelReservationCancelReservationInvalidAuthorizationResponseException()
        {
            var bike = Substitute.For<IBikeInfoMutable>();
            var connector = Substitute.For<IConnector>();
            var command = Substitute.For<ICommand>();
            var geolocation = Substitute.For<IGeolocation>();
            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 ReservedOpen(
                bike,
                () => true, // isConnectedDelegate
                (isConnexted) => connector,
                geolocation,
                locks,
                () => pollingManager,
                Substitute.For<ISmartDevice>(),
                viewService,
                bikesViewModel,
                activeUser);

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

            bike.Id.Returns("0");

            viewService.DisplayAlert(string.Empty, "Rad Nr. 0 abschließen und zurückgeben oder Rad mieten?", "Zurückgeben", "Mieten").Returns(Task.FromResult(true));

            locks[0].CloseAsync().Returns(LockitLockingState.Closed);

            connector.Command.DoCancelReservation(bike).Returns(x => throw new InvalidAuthorizationResponseException("mustermann@server.de", response));

            bike.State.Value.Returns(InUseStateEnum.Disposable); // Reqesthandler factory queries state to create appropriate request handler object.

            locks.DidNotReceive().DisconnectAsync(Arg.Any<int>(), Arg.Any<Guid>());

            var subsequent = handler.HandleRequestOption1().Result;

            // Verify behaviour
            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 = "Closing lock...";
                locks[0].CloseAsync();
                bikesViewModel.ActionText = "Canceling reservation...";
                connector.Command.DoCancelReservation(bike);
                bikesViewModel.ActionText = "";
                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 = "";
                bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
            });

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

        /// <summary>
        /// Use case: Close lock and cancel reservation.
        /// Final state: Reserved closed.
        /// </summary>
        [Test]
        public void TestCloseLockAndCancelReservationCancelReservationWebConnectFailureException()
        {
            var bike = Substitute.For<IBikeInfoMutable>();
            var connector = Substitute.For<IConnector>();
            var command = Substitute.For<ICommand>();
            var geolocation = Substitute.For<IGeolocation>();
            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 ReservedOpen(
                bike,
                () => true, // isConnectedDelegate
                (isConnexted) => connector,
                geolocation,
                locks,
                () => pollingManager,
                Substitute.For<ISmartDevice>(),
                viewService,
                bikesViewModel,
                activeUser);

            bike.Id.Returns("0");

            viewService.DisplayAlert(string.Empty, "Rad Nr. 0 abschließen und zurückgeben oder Rad mieten?", "Zurückgeben", "Mieten").Returns(Task.FromResult(true));

            locks[0].CloseAsync().Returns(LockitLockingState.Closed);

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

            bike.State.Value.Returns(InUseStateEnum.Disposable); // Reqesthandler factory queries state to create appropriate request handler object.

            var subsequent = handler.HandleRequestOption1().Result;

            locks.DidNotReceive().DisconnectAsync(Arg.Any<int>(), Arg.Any<Guid>());

            // Verify behaviour
            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 = "Closing lock...";
                locks[0].CloseAsync();
                bikesViewModel.ActionText = "Canceling reservation...";
                connector.Command.DoCancelReservation(bike);
                bikesViewModel.ActionText = "";
                viewService.DisplayAlert(
                    "Connection error when canceling the reservation!",
                    "Context info\r\nIs WIFI available/ mobile networt available and mobile data activated / ... ?",
                    "OK");
                bikesViewModel.ActionText = "Updating...";
                pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
                bikesViewModel.ActionText = "";
                bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
            });

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

        /// <summary>
        /// Use case: Close lock and cancel reservation.
        /// Final state: Reserved closed.
        /// </summary>
        [Test]
        public void TestCloseLockAndCancelReservationCancelReservationException()
        {
            var bike = Substitute.For<IBikeInfoMutable>();
            var connector = Substitute.For<IConnector>();
            var command = Substitute.For<ICommand>();
            var geolocation = Substitute.For<IGeolocation>();
            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 ReservedOpen(
                bike,
                () => true, // isConnectedDelegate
                (isConnexted) => connector,
                geolocation,
                locks,
                () => pollingManager,
                Substitute.For<ISmartDevice>(),
                viewService,
                bikesViewModel,
                activeUser);

            bike.Id.Returns("0");

            viewService.DisplayAlert(string.Empty, "Rad Nr. 0 abschließen und zurückgeben oder Rad mieten?", "Zurückgeben", "Mieten").Returns(Task.FromResult(true));

            locks[0].CloseAsync().Returns(LockitLockingState.Closed);

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

            bike.State.Value.Returns(InUseStateEnum.Disposable); // Reqesthandler factory queries state to create appropriate request handler object.

            var subsequent = handler.HandleRequestOption1().Result;

            locks.DidNotReceive().DisconnectAsync(Arg.Any<int>(), Arg.Any<Guid>());

            // Verify behaviour
            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 = "Closing lock...";
                locks[0].CloseAsync();
                bikesViewModel.ActionText = "Canceling reservation...";
                connector.Command.DoCancelReservation(bike);
                bikesViewModel.ActionText = "";
                viewService.DisplayAlert(
                    "Error when canceling the reservation!",
                    "Exception message.",
                    "OK");
                bikesViewModel.ActionText = "Updating...";
                pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again
                bikesViewModel.ActionText = "";
                bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked
            });

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