sharee.bike-App/TINKLib/ViewModel/BikesAtStation/BikesAtStationPageViewModel.cs

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C#
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using System;
using System.Collections.Generic;
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using System.Collections.Specialized;
using System.ComponentModel;
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using System.Linq;
using System.Threading;
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using System.Threading.Tasks;
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using Plugin.BLE.Abstractions.Contracts;
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using Serilog;
using TINK.Model;
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using TINK.Model.Bikes;
using TINK.Model.Bikes.BikeInfoNS.BluetoothLock;
using TINK.Model.Connector;
using TINK.Model.Device;
using TINK.Model.Station;
using TINK.Model.User;
using TINK.MultilingualResources;
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using TINK.Services.BluetoothLock;
using TINK.Services.BluetoothLock.Tdo;
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using TINK.Services.Geolocation;
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using TINK.Services.Permissions;
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using TINK.Settings;
using TINK.View;
using TINK.ViewModel.Bikes;
using Xamarin.Forms;
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namespace TINK.ViewModel.BikesAtStation
{
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/// <summary>
/// Manages one or more bikes which are located at a single station.
/// </summary>
public class BikesAtStationPageViewModel : BikesViewModel, INotifyCollectionChanged, INotifyPropertyChanged
{
/// <summary>
/// Holds the selected station;
/// </summary>
private IStation Station { get; }
/// <summary>
/// Constructs bike collection view model.
/// </summary>
/// <param name="user">Mail address of active user.</param>
/// <param name="permissions">Holds object to query location permisions.</param>
/// <param name="bluetoothLE">Holds object to query bluetooth state.</param>
/// <param name="runtimPlatform">Specifies on which platform code is run.</param>
/// <param name="isConnectedDelegate">Returns if mobile is connected to web or not.</param>
/// <param name="connectorFactory">Connects system to copri.</param>
/// <param name="lockService">Service to control lock retrieve info.</param>
/// <param name="polling"> Holds whether to poll or not and the periode leght is polling is on. </param>
/// <param name="openUrlInExternalBrowser">Action to open an external browser.</param>
/// <param name="postAction">Executes actions on GUI thread.</param>
/// <param name="smartDevice">Provides info about the smart device (phone, tablet, ...).</param>
/// <param name="viewService">Interface to actuate methodes on GUI.</param>
public BikesAtStationPageViewModel(
User user,
ILocationPermission permissions,
IBluetoothLE bluetoothLE,
string runtimPlatform,
IStation selectedStation,
Func<bool> isConnectedDelegate,
Func<bool, IConnector> connectorFactory,
IGeolocation geolocation,
ILocksService lockService,
PollingParameters polling,
Action<string> openUrlInExternalBrowser,
Action<SendOrPostCallback, object> postAction,
ISmartDevice smartDevice,
IViewService viewService) : base(user, permissions, bluetoothLE, runtimPlatform, isConnectedDelegate, connectorFactory, geolocation, lockService, polling, postAction, smartDevice, viewService, openUrlInExternalBrowser, () => new BikeAtStationInUseStateInfoProvider())
{
Station = selectedStation ?? new NullStation();
Title = Station.StationName;
StationDetailText = Station.Id != null
? string.Format(AppResources.MarkingBikesAtStationStationId, Station.Id)
: string.Empty;
CollectionChanged += (sender, eventargs) =>
{
OnPropertyChanged(new PropertyChangedEventArgs(nameof(IsNoBikesAtStationVisible)));
OnPropertyChanged(new PropertyChangedEventArgs(nameof(NoBikesAtStationText)));
OnPropertyChanged(new PropertyChangedEventArgs(nameof(IsLoginRequiredHintVisible)));
};
}
/// <summary>
/// Name of the station which is displayed as title of the page.
/// </summary>
public string Title
{
get; private set;
}
/// <summary>
/// Informs about need to log in before requesting an bike.
/// </summary>
public bool IsLoginRequiredHintVisible
{
get
{
return Count > 0
&& !ActiveUser.IsLoggedIn;
}
}
/// <summary>
/// Informs about need to log in before requesting an bike.
/// </summary>
public string LoginRequiredHintText
=> ActiveUser.IsLoggedIn
? string.Empty
: AppResources.MarkingLoginRequiredToRerserve;
public string ContactSupportHintText
=> string.Format(AppResources.MarkingContactSupport, Station.OperatorData?.Name ?? "Operator");
/// <summary>
/// Returns if info about the fact that user did not request or book any bikes is visible or not.
/// </summary>
public bool IsNoBikesAtStationVisible
{
get
{
return Count <= 0 && IsIdle == true;
}
}
/// <summary> Info about the fact that user did not request or book any bikes. </summary>
public string NoBikesAtStationText
{
get
{
return IsNoBikesAtStationVisible
? $"Momentan sind keine Fahrräder an dieser Station verfügbar."
: string.Empty;
}
}
/// <summary> Command object to bind login page redirect link to view model.</summary>
public System.Windows.Input.ICommand ContactSupportClickedCommand
#if USEFLYOUT
=> new Xamarin.Forms.Command(() => OpenSupportPageAsync());
#else
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=> new Xamarin.Forms.Command(async () => await OpenSupportPageAsync());
#endif
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/// <summary> Command object to bind login page redirect link to view model.</summary>
public System.Windows.Input.ICommand LoginRequiredHintClickedCommand
#if USEFLYOUT
=> new Xamarin.Forms.Command(() => OpenLoginPageAsync());
#else
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=> new Xamarin.Forms.Command(async () => await OpenLoginPageAsync());
#endif
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/// <summary> Opens login page. </summary>
#if USEFLYOUT
public void OpenLoginPageAsync()
#else
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public async Task OpenLoginPageAsync()
#endif
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{
try
{
// Switch to map page
#if USEFLYOUT
ViewService.ShowPage(ViewTypes.LoginPage);
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#else
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await ViewService.ShowPage("//LoginPage");
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#endif
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}
catch (Exception p_oException)
{
Log.Error("Ein unerwarteter Fehler ist in der Klasse BikesAtStationPageViewModel aufgetreten. Kontext: Klick auf Hinweistext auf Station N- seite ohne Anmeldung. {@Exception}", p_oException);
return;
}
}
/// <summary> Opens support. </summary>
#if USEFLYOUT
public void OpenSupportPageAsync()
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#else
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public async Task OpenSupportPageAsync()
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#endif
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{
try
{
// Switch to map page
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#if USEFLYOUT
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ViewService.ShowPage(ViewTypes.ContactPage, AppResources.MarkingFeedbackAndContact);
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#else
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await ViewService.ShowPage("//ContactPage");
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#endif
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}
catch (Exception p_oException)
{
Log.Error("Ein unerwarteter Fehler ist auf der Seite Kontakt aufgetreten. Kontext: Klick auf Hinweistext auf Station N- seite ohne Anmeldung. {@Exception}", p_oException);
return;
}
}
/// <summary> Returns detailed info about the station (station id).<summary>
public string StationDetailText { get; private set; }
/// <summary>
/// Invoked when page is shown.
/// Starts update process.
/// </summary>
public async Task OnAppearing()
{
Log.ForContext<BikesAtStationPageViewModel>().Information($"Bikes at station {Station.StationName} is appearing, either due to tap on a station or to app being shown again.");
ActionText = "Einen Moment bitte...";
// Stop polling before getting bikes info.
await m_oViewUpdateManager.StopUpdatePeridically();
ActionText = AppResources.ActivityTextBikesAtStationGetBikes;
var bikesAll = await ConnectorFactory(IsConnected).Query.GetBikesAsync();
Exception = bikesAll.Exception; // Update communication error from query for bikes at station.
var bikesAtStation = bikesAll.Response.GetAtStation(Station.Id);
var lockIdList = bikesAtStation
.GetLockIt()
.Cast<Model.Bikes.BikeInfoNS.BluetoothLock.BikeInfo>()
.Select(x => x.LockInfo)
.ToList();
if (LockService is ILocksServiceFake serviceFake)
{
serviceFake.UpdateSimulation(bikesAtStation);
}
ActionText = AppResources.ActivityTextSearchBikes;
// Check location permissions.
if (bikesAtStation.GetLockIt().Count > 0
&& RuntimePlatform == Device.Android)
{
var status = await PermissionsService.CheckStatusAsync();
if (status != Status.Granted)
{
var permissionResult = await PermissionsService.RequestAsync();
if (permissionResult != Status.Granted)
{
var dialogResult = await ViewService.DisplayAlert(
AppResources.MessageTitleHint,
AppResources.MessageBikesManagementLocationPermissionOpenDialog,
AppResources.MessageAnswerYes,
AppResources.MessageAnswerNo);
if (!dialogResult)
{
// User decided not to give access to locations permissions.
BikeCollection.Update(bikesAtStation, new List<IStation> { Station });
await OnAppearing(() => UpdateTask());
ActionText = "";
IsIdle = true;
return;
}
// Open permissions dialog.
PermissionsService.OpenAppSettings();
}
}
if (Geolocation.IsGeolcationEnabled == false)
{
await ViewService.DisplayAlert(
AppResources.MessageTitleHint,
AppResources.MessageBikesManagementLocationActivation,
AppResources.MessageAnswerOk);
BikeCollection.Update(bikesAtStation, new List<IStation> { Station });
await OnAppearing(() => UpdateTask());
ActionText = "";
IsIdle = true;
}
// Check if bluetooth is activated.
if (await BluetoothService.GetBluetoothState() != BluetoothState.On)
{
await ViewService.DisplayAlert(
AppResources.MessageTitleHint,
AppResources.MessageBikesManagementBluetoothActivation,
AppResources.MessageAnswerOk);
BikeCollection.Update(bikesAtStation, new List<IStation> { Station });
await OnAppearing(() => UpdateTask());
ActionText = "";
IsIdle = true;
return;
}
}
// Connect to bluetooth devices.
ActionText = AppResources.ActivityTextSearchBikes;
IEnumerable<LockInfoTdo> locksInfoTdo;
try
{
locksInfoTdo = await LockService.GetLocksStateAsync(
lockIdList.Select(x => x.ToLockInfoTdo()).ToList(),
LockService.TimeOut.MultiConnect);
}
catch (Exception exception)
{
Log.ForContext<BikesAtStationPageViewModel>().Error("Getting bluetooth state failed. {Exception}", exception);
locksInfoTdo = new List<LockInfoTdo>();
}
var locksInfo = lockIdList.UpdateById(locksInfoTdo);
BikeCollection.Update(bikesAtStation.UpdateLockInfo(locksInfo), new List<IStation> { Station });
// Backup GUI synchronization context.
await OnAppearing(() => UpdateTask());
ActionText = "";
IsIdle = true;
}
/// <summary> Create task which updates my bike view model.</summary>
private void UpdateTask()
{
PostAction(
unused =>
{
Log.ForContext<BikesAtStationPageViewModel>().Debug("Updating action text...");
ActionText = AppResources.ActivityTextUpdating;
IsConnected = IsConnectedDelegate();
},
null);
var result = ConnectorFactory(IsConnected).Query.GetBikesAsync().Result;
BikeCollection bikes = result.Response.GetAtStation(Station.Id);
var exception = result.Exception;
if (exception != null)
{
Log.ForContext<BikesAtStationPageViewModel>().Error("Getting all bikes bikes in polling context failed with exception {Exception}.", exception);
}
PostAction(
unused =>
{
Log.ForContext<BikesAtStationPageViewModel>().Debug("Updating bikes at station...");
BikeCollection.Update(bikes, new List<IStation> { Station });
Exception = result.Exception;
ActionText = string.Empty;
},
null);
}
/// <summary>
/// True if any action can be performed (request and cancel request)
/// </summary>
public override bool IsIdle
{
get => base.IsIdle;
set
{
if (value == base.IsIdle)
return;
Log.ForContext<BikesViewModel>().Debug($"Switch value of {nameof(IsIdle)} to {value}.");
base.IsIdle = value;
base.OnPropertyChanged(new PropertyChangedEventArgs(nameof(IsNoBikesAtStationVisible)));
base.OnPropertyChanged(new PropertyChangedEventArgs(nameof(NoBikesAtStationText)));
}
}
}
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}