sharee.bike-App/TINKLib/ViewModel/Bikes/Bike/BluetoothLock/RequestHandler/ReservedDisconnected.cs

using Serilog;
using System;
using System.Threading.Tasks;
using TINK.Model.Connector;
using TINK.Repository.Exception;
using TINK.Model.Bike.BluetoothLock;
using TINK.Model.State;
using TINK.View;
using TINK.Model.Services.Geolocation;
using TINK.Services.BluetoothLock;
using TINK.Services.BluetoothLock.Exception;
using TINK.Services.BluetoothLock.Tdo;
using TINK.MultilingualResources;
using TINK.Model.Bikes.Bike.BluetoothLock;
using TINK.Model.User;
using TINK.Model.Device;

namespace TINK.ViewModel.Bikes.Bike.BluetoothLock.RequestHandler
{
    public class ReservedDisconnected : Base, IRequestHandler
    {
        /// <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 ReservedDisconnected(
           IBikeInfoMutable selectedBike,
           Func<bool> isConnectedDelegate,
           Func<bool, IConnector> connectorFactory,
           IGeolocation geolocation,
           ILocksService lockService,
           Func<IPollingUpdateTaskManager> viewUpdateManager,
           ISmartDevice smartDevice,
           IViewService viewService,
           IBikesViewModel bikesViewModel,
           IUser activeUser) : base(
               selectedBike,
               AppResources.ActionCancelRequest, // Copri button text: "Reservierung abbrechen"
               true, // Show button to enable canceling reservation.
               isConnectedDelegate,
               connectorFactory,
               geolocation,
               lockService,
               viewUpdateManager,
               smartDevice,
               viewService,
               bikesViewModel,
               activeUser)
        {
            LockitButtonText = AppResources.ActionSearchLock;
            IsLockitButtonVisible = true; // Show "Öffnen" button to enable unlocking
        }

        /// <summary> Gets the bike state. </summary>
        public override InUseStateEnum State => InUseStateEnum.Reserved;

        /// <summary> Cancel reservation. </summary>
        public async Task<IRequestHandler> HandleRequestOption1() => await CancelReservation();

        /// <summary> Connect to reserved bike ask whether to book bike bike or not and if yes open lock. </summary>
        /// <returns></returns>
        public async Task<IRequestHandler> HandleRequestOption2() => await ConnectLockAndBook();

        /// <summary> Cancel reservation. </summary>
        public async Task<IRequestHandler> CancelReservation()
        {
            BikesViewModel.IsIdle = false; // Lock list to avoid multiple taps while copri action is pending.

            var alertResult = await ViewService.DisplayAlert(
                string.Empty,
                string.Format(AppResources.QuestionCancelReservation, SelectedBike.GetFullDisplayName()),
                AppResources.QuestionAnswerYes,
                AppResources.QuestionAnswerNo);

            if (alertResult == false)
            {
                // User aborted cancel process
                Log.ForContext<ReservedDisconnected>().Information("User selected reserved bike {l_oId} in order to cancel reservation but action was canceled.", SelectedBike.Id);
                BikesViewModel.IsIdle = true;
                return this;
            }

            Log.ForContext<ReservedDisconnected>().Information("User selected reserved bike {l_oId} in order to cancel reservation.", SelectedBike.Id);

            // Stop polling before cancel request.
            BikesViewModel.ActionText = AppResources.ActivityTextOneMomentPlease;
            await ViewUpdateManager().StopUpdatePeridically();

            BikesViewModel.ActionText = AppResources.ActivityTextCancelingReservation;
            IsConnected = IsConnectedDelegate();
            try
            {
                await ConnectorFactory(IsConnected).Command.DoCancelReservation(SelectedBike);

                // If canceling bike succedes remove bike because it is not ready to be booked again
                IsRemoveBikeRequired = true;
            }
            catch (Exception l_oException)
            {
                BikesViewModel.ActionText = string.Empty;
                if (l_oException is InvalidAuthorizationResponseException)
                {
                    // Copri response is invalid.
                    Log.ForContext<ReservedDisconnected>().Error("User selected reserved bike {l_oId} but canceling reservation failed (Invalid auth. response).", SelectedBike.Id);
                    await ViewService.DisplayAlert("Fehler beim Aufheben der Reservierung!", l_oException.Message, "OK");
                }
                else if (l_oException is WebConnectFailureException)
                {
                    // Copri server is not reachable.
                    Log.ForContext<ReservedDisconnected>().Information("User selected reserved bike {l_oId} but cancel reservation failed (Copri server not reachable).", SelectedBike.Id);
                    await ViewService.DisplayAlert(
                        "Verbingungsfehler beim Aufheben der Reservierung!",
                        string.Format("{0}\r\n{1}", l_oException.Message, WebConnectFailureException.GetHintToPossibleExceptionsReasons),
                        "OK");
                }
                else
                {
                    Log.ForContext<ReservedDisconnected>().Error("User selected reserved bike {l_oId} but cancel reservation failed. {@l_oException}.", SelectedBike.Id, l_oException);
                    await ViewService.DisplayAlert("Fehler beim Aufheben der Reservierung!", l_oException.Message, "OK");
                }

                BikesViewModel.ActionText = AppResources.ActivityTextStartingUpdater;
                await ViewUpdateManager().StartUpdateAyncPeridically(); // Restart polling again.
                BikesViewModel.ActionText = string.Empty;
                BikesViewModel.IsIdle = true; // Unlock GUI                
                return RequestHandlerFactory.Create(SelectedBike, IsConnectedDelegate, ConnectorFactory, Geolocation, LockService, ViewUpdateManager, SmartDevice, ViewService, BikesViewModel, ActiveUser);
            }

            Log.ForContext<ReservedDisconnected>().Information("User canceled reservation of bike {l_oId} successfully.", SelectedBike.Id);

            BikesViewModel.ActionText = AppResources.ActivityTextStartingUpdater;
            await ViewUpdateManager().StartUpdateAyncPeridically(); // Restart polling again.
            BikesViewModel.ActionText = string.Empty;
            BikesViewModel.IsIdle = true; // Unlock GUI                
            return RequestHandlerFactory.Create(SelectedBike, IsConnectedDelegate, ConnectorFactory, Geolocation, LockService, ViewUpdateManager, SmartDevice, ViewService, BikesViewModel, ActiveUser);
        }

        /// <summary> Connect to reserved bike ask whether to book bike bike or not and if yes open lock. </summary>
        /// <returns></returns>
        public async Task<IRequestHandler> ConnectLockAndBook()
        {
            BikesViewModel.IsIdle = false;
            Log.ForContext<ReservedDisconnected>().Information("Request to search for {bike} detected.", SelectedBike);

            // Stop polling before getting new auth-values.
            BikesViewModel.ActionText = AppResources.ActivityTextOneMomentPlease;
            await ViewUpdateManager().StopUpdatePeridically();

            BikesViewModel.ActionText = AppResources.ActivityTextQuerryServer;
            IsConnected = IsConnectedDelegate();
            try
            {
                // Repeat reservation to get a new seed/ k_user value.
                await ConnectorFactory(IsConnected).Command.CalculateAuthKeys(SelectedBike);
            }
            catch (Exception exception)
            {
                BikesViewModel.ActionText = string.Empty;

                if (exception is WebConnectFailureException)
                {
                    // Copri server is not reachable.
                    Log.ForContext<ReservedDisconnected>().Information("User selected requested bike {l_oId} to connect to lock. (Copri server not reachable).", SelectedBike.Id);

                    await ViewService.DisplayAlert(
                        "Fehler bei Verbinden mit Schloss!",
                        $"Internet muss erreichbar sein um Verbindung mit Schloss für reserviertes Rad herzustellen.\r\n{exception.Message}\r\n{WebConnectFailureException.GetHintToPossibleExceptionsReasons}",
                        "OK");
                }
                else
                {
                    Log.ForContext<ReservedDisconnected>().Error("User selected requested bike {l_oId} to scan for lock. {@l_oException}", SelectedBike.Id, exception);

                    await ViewService.DisplayAlert(
                        "Fehler bei Verbinden mit Schloss!",
                        $"Kommunikationsfehler bei Schlosssuche.\r\n{exception.Message}",
                        "OK");
                }

                // Restart polling again.
                BikesViewModel.ActionText = AppResources.ActivityTextStartingUpdater;
                await ViewUpdateManager().StartUpdateAyncPeridically();
                BikesViewModel.ActionText = string.Empty; 
                BikesViewModel.IsIdle = true;
                return this;
            }

            // Connect to lock.
            LockInfoTdo result = null;
            var continueConnect = true;
            var retryCount = 1;
            while (continueConnect && result == null)
            {
                BikesViewModel.ActionText = AppResources.ActivityTextSearchingLock;
                try
                {
                    result = await LockService.ConnectAsync(
                        new LockInfoAuthTdo.Builder
                        {
                            Id = SelectedBike.LockInfo.Id,
                            Guid = SelectedBike.LockInfo.Guid,
                            K_seed = SelectedBike.LockInfo.Seed,
                            K_u = SelectedBike.LockInfo.UserKey
                        }.Build(),
                        LockService.TimeOut.GetSingleConnect(retryCount));
                }
                catch (Exception exception)
                {
                    BikesViewModel.ActionText = string.Empty;

                    if (exception is OutOfReachException)
                    {
                        Log.ForContext<ReservedDisconnected>().Debug("Lock state can not be retrieved. {Exception}", exception);

                        continueConnect = await ViewService.DisplayAlert(
                            "Fehler bei Verbinden mit Schloss!",
                            "Schloss kann erst gefunden werden, wenn reserviertes Rad in der Nähe ist.",
                            "Wiederholen",
                            "Abbrechen");
                    }
                    else
                    {
                        Log.ForContext<ReservedDisconnected>().Error("Lock state can not be retrieved. {Exception}", exception);
                        continueConnect = await ViewService.DisplayAdvancedAlert(
                                "Fehler bei Verbinden mit Schloss!",
                                AppResources.ErrorReservedSearchMessage,
                                exception.Message,
                                "Wiederholen",
                                "Abbrechen");
                    }

                    if (continueConnect)
                    {
                        retryCount++;
                        continue;
                    }

                    // Restart polling again.
                    BikesViewModel.ActionText = AppResources.ActivityTextStartingUpdater;
                    await ViewUpdateManager().StartUpdateAyncPeridically();
                    BikesViewModel.ActionText = string.Empty;
                    BikesViewModel.IsIdle = true;
                    return this;
                }
            }
            if (result?.State == null)
            {
                Log.ForContext<ReservedDisconnected>().Information("Lock for bike {bike} not found.", SelectedBike);
                BikesViewModel.ActionText = "";

                await ViewService.DisplayAlert(
                    "Fehler bei Verbinden mit Schloss!",
                    $"Schlossstatus des reservierten Rads konnte nicht ermittelt werden.",
                    "OK");

                // Restart polling again.
                BikesViewModel.ActionText = AppResources.ActivityTextStartingUpdater;
                await ViewUpdateManager().StartUpdateAyncPeridically();
                BikesViewModel.ActionText = string.Empty;
                BikesViewModel.IsIdle = true;
                return this;
            }

            var state = result.State.Value.GetLockingState();
            SelectedBike.LockInfo.State = state;
            SelectedBike.LockInfo.Guid = result?.Guid ?? new Guid();

            Log.ForContext<ReservedDisconnected>().Information($"State for bike {SelectedBike.Id} updated successfully. Value is {SelectedBike.LockInfo.State}.");

            BikesViewModel.ActionText = string.Empty;

            // Ask whether to really book bike?
            var alertResult = await ViewService.DisplayAlert(
                string.Empty,
                string.Format(AppResources.QuestionOpenLockAndBookBike, SelectedBike.GetFullDisplayName()),
                AppResources.MessageAnswerYes,
                AppResources.MessageAnswerNo);

            if (alertResult == false)
            {
                // User aborted booking process
                Log.ForContext<ReservedDisconnected>().Information("User selected recently requested bike {bike} in order to reserve but did deny to book bike.", SelectedBike);

                // Disconnect lock.
                BikesViewModel.ActionText = AppResources.ActivityTextDisconnectingLock;
                try
                {
                    SelectedBike.LockInfo.State = await LockService.DisconnectAsync(SelectedBike.LockInfo.Id, SelectedBike.LockInfo.Guid);
                }
                catch (Exception exception)
                {
                    Log.ForContext<ReservedDisconnected>().Error("Lock can not be disconnected. {Exception}", exception);

                    BikesViewModel.ActionText = AppResources.ActivityTextErrorDisconnect;
                }

                // Restart polling again.
                BikesViewModel.ActionText = AppResources.ActivityTextStartingUpdater;
                await ViewUpdateManager().StartUpdateAyncPeridically();
                BikesViewModel.ActionText = string.Empty;
                BikesViewModel.IsIdle = true;
                return RequestHandlerFactory.Create(SelectedBike, IsConnectedDelegate, ConnectorFactory, Geolocation, LockService, ViewUpdateManager, SmartDevice, ViewService, BikesViewModel, ActiveUser);
            }

            Log.ForContext<ReservedDisconnected>().Information("User selected recently requested bike {bike} in order to book.", SelectedBike);

            // Book bike prior to opening lock.
            BikesViewModel.ActionText = AppResources.ActivityTextRentingBike;
            IsConnected = IsConnectedDelegate();
            try
            {
                await ConnectorFactory(IsConnected).Command.DoBook(SelectedBike);
            }
            catch (Exception l_oException)
            {
                BikesViewModel.ActionText = string.Empty;

                if (l_oException is WebConnectFailureException)
                {
                    // Copri server is not reachable.
                    Log.ForContext<ReservedDisconnected>().Information("User selected recently requested bike {l_oId} but booking failed (Copri server not reachable).", SelectedBike.Id);

                    await ViewService.DisplayAdvancedAlert(
                        AppResources.MessageRentingBikeErrorConnectionTitle,
                        WebConnectFailureException.GetHintToPossibleExceptionsReasons,
                        l_oException.Message,
                        AppResources.MessageAnswerOk);
                }
                else
                {
                    Log.ForContext<ReservedDisconnected>().Error("User selected recently requested bike {l_oId} but reserving failed. {@l_oException}", SelectedBike.Id, l_oException);

                    await ViewService.DisplayAdvancedAlert(
                        AppResources.MessageRentingBikeErrorGeneralTitle,
                        string.Empty,
                        l_oException.Message,
                        AppResources.MessageAnswerOk);
                }

                BikesViewModel.ActionText = AppResources.ActivityTextStartingUpdater;
                await ViewUpdateManager().StartUpdateAyncPeridically(); // Restart polling again.
                BikesViewModel.IsIdle = true; // Unlock GUI
                return RequestHandlerFactory.Create(SelectedBike, IsConnectedDelegate, ConnectorFactory, Geolocation, LockService, ViewUpdateManager, SmartDevice, ViewService, BikesViewModel, ActiveUser);
            }

            // Unlock bike.
            BikesViewModel.ActionText = AppResources.ActivityTextOpeningLock;
            try
            {
                SelectedBike.LockInfo.State = (await LockService[SelectedBike.LockInfo.Id].OpenAsync())?.GetLockingState() ?? LockingState.Disconnected;
            }
            catch (Exception exception)
            {
                BikesViewModel.ActionText = string.Empty;
                if (exception is OutOfReachException)
                {
                    Log.ForContext<ReservedDisconnected>().Debug("Lock can not be opened. {Exception}", exception);

                    await ViewService.DisplayAlert(
                        AppResources.ErrorOpenLockTitle,
                        AppResources.ErrorOpenLockOutOfReadMessage,
                        "OK");
                }
                else if (exception is CouldntOpenBoldIsBlockedException)
                {
                    Log.ForContext<ReservedDisconnected>().Debug("Lock can not be opened. Bold is blocked. {Exception}", exception);

                    await ViewService.DisplayAlert(
                        AppResources.ErrorOpenLockTitle,
                        AppResources.ErrorOpenLockBoldBlockedMessage,
                        "OK");
                }
                else if (exception is CouldntOpenBoldWasBlockedException)
                {
                    Log.ForContext<ReservedDisconnected>().Debug("Lock can not be opened. Bold was or is blocked. {Exception}", exception);

                    await ViewService.DisplayAlert(
                        AppResources.ErrorOpenLockStillOpenTitle,
                        AppResources.ErrorOpenLockBoldWasBlockedMessage,
                        "OK");
                }
                else if (exception is CouldntOpenInconsistentStateExecption inconsistentState
                        && inconsistentState.State == LockingState.Closed)
                {
                    Log.ForContext<ReservedDisconnected>().Debug("Lock can not be opened. lock reports state closed. {Exception}", exception);

                    await ViewService.DisplayAlert(
                        AppResources.ErrorOpenLockTitle,
                        AppResources.ErrorOpenLockStillClosedMessage,
                        "OK");
                }
                else
                {
                    Log.ForContext<ReservedDisconnected>().Error("Lock can not be opened. {Exception}", exception);
                    await ViewService.DisplayAlert(
                        AppResources.ErrorOpenLockTitle,
                        exception.Message,
                        "OK");
                }

                SelectedBike.LockInfo.State = exception is StateAwareException stateAwareException
                    ? stateAwareException.State
                    : LockingState.Disconnected;

                BikesViewModel.ActionText = AppResources.ActivityTextStartingUpdater;
                await ViewUpdateManager().StartUpdateAyncPeridically(); // Restart polling again.

                BikesViewModel.ActionText = string.Empty;
                BikesViewModel.IsIdle = true;
                return RequestHandlerFactory.Create(SelectedBike, IsConnectedDelegate, ConnectorFactory, Geolocation, LockService, ViewUpdateManager, SmartDevice, ViewService, BikesViewModel, ActiveUser);
            }

            if (SelectedBike.LockInfo.State != LockingState.Open)
            {
                // Opening lock failed.
                BikesViewModel.ActionText = AppResources.ActivityTextStartingUpdater;
                await ViewUpdateManager().StartUpdateAyncPeridically(); // Restart polling again.

                BikesViewModel.ActionText = "";
                BikesViewModel.IsIdle = true; // Unlock GUI
                return RequestHandlerFactory.Create(SelectedBike, IsConnectedDelegate, ConnectorFactory, Geolocation, LockService, ViewUpdateManager, SmartDevice, ViewService, BikesViewModel, ActiveUser);
            }

            BikesViewModel.ActionText = AppResources.ActivityTextReadingChargingLevel;
            try
            {
                SelectedBike.LockInfo.BatteryPercentage = await LockService[SelectedBike.LockInfo.Id].GetBatteryPercentageAsync();
            }
            catch (Exception exception)
            {
                if (exception is OutOfReachException)
                {
                    Log.ForContext<ReservedDisconnected>().Debug("Akkustate can not be read, bike out of range. {Exception}", exception);

                    BikesViewModel.ActionText = AppResources.ActivityTextErrorReadingChargingLevelOutOfReach;
                }
                else
                {
                    Log.ForContext<ReservedDisconnected>().Error("Akkustate can not be read. {Exception}", exception);

                    BikesViewModel.ActionText = AppResources.ActivityTextErrorReadingChargingLevelGeneral;
                }
            }

            // Lock list to avoid multiple taps while copri action is pending.
            BikesViewModel.ActionText = AppResources.ActivityTextStartingUpdatingLockingState;

            IsConnected = IsConnectedDelegate();

            try
            {
                await ConnectorFactory(IsConnected).Command.UpdateLockingStateAsync(SelectedBike);
            }
            catch (Exception exception)
            {
                if (exception is WebConnectFailureException)
                {
                    // Copri server is not reachable.
                    Log.ForContext<ReservedDisconnected>().Information("User locked bike {bike} in order to pause ride but updating failed (Copri server not reachable).", SelectedBike);

                    BikesViewModel.ActionText = AppResources.ActivityTextErrorNoWebUpdateingLockstate;
                }
                else if (exception is ResponseException copriException)
                {
                    // Copri server is not reachable.
                    Log.ForContext<ReservedDisconnected>().Information("User locked bike {bike} in order to pause ride but updating failed. {response}.", SelectedBike, copriException.Response);

                    BikesViewModel.ActionText = AppResources.ActivityTextErrorStatusUpdateingLockstate;
                }
                else
                {
                    Log.ForContext<ReservedDisconnected>().Error("User locked bike {bike} in order to pause ride but updating failed . {@l_oException}", SelectedBike.Id, exception);
                    BikesViewModel.ActionText = AppResources.ActivityTextErrorConnectionUpdateingLockstate;
                }
            }

            Log.ForContext<ReservedDisconnected>().Information("User reserved bike {bike} successfully.", SelectedBike);

            // Restart polling again.
            BikesViewModel.ActionText = AppResources.ActivityTextStartingUpdater;
            await ViewUpdateManager().StartUpdateAyncPeridically();
            BikesViewModel.ActionText = string.Empty;
            BikesViewModel.IsIdle = true; // Unlock GUI
            return RequestHandlerFactory.Create(SelectedBike, IsConnectedDelegate, ConnectorFactory, Geolocation, LockService, ViewUpdateManager, SmartDevice, ViewService, BikesViewModel, ActiveUser);
        }
    }
}