sharee.bike-App/TINKLib/ViewModel/Map/MapPageViewModel.cs

984 lines
39 KiB
C#
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using Xamarin.Forms;
using TINK.View;
using TINK.Model.Station;
using System;
using System.Linq;
using TINK.Model.Bike;
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using TINK.Repository.Exception;
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using TINK.Model;
using Serilog;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.ComponentModel;
using Xamarin.Forms.GoogleMaps;
using System.Collections.ObjectModel;
#if USEFLYOUT
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using TINK.View.MasterDetail;
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#endif
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using TINK.Settings;
using TINK.Model.Connector;
using TINK.Model.Services.CopriApi;
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using TINK.Services.Permissions;
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using Xamarin.Essentials;
using System.Threading;
using TINK.MultilingualResources;
using TINK.Services.BluetoothLock;
using TINK.ViewModel.Info;
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using TINK.Repository;
using TINK.Model.Services.Geolocation;
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#if !TRYNOTBACKSTYLE
#endif
namespace TINK.ViewModel.Map
{
public class MapPageViewModel : INotifyPropertyChanged
{
/// <summary> Holds the count of custom icons availalbe.</summary>
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private const int CUSTOM_ICONS_COUNT = 30;
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/// <summary> Reference on view service to show modal notifications and to perform navigation. </summary>
private IViewService ViewService { get; }
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/// <summary>
/// Holds the exception which occurred getting bikes occupied information.
/// </summary>
private Exception m_oException;
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/// <summary>
/// Service to query/ manage permissions (location) of the app.
/// </summary>
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private ILocationPermission PermissionsService { get; }
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/// <summary>
/// Service to manage bluetooth stack.
/// </summary>
private Plugin.BLE.Abstractions.Contracts.IBluetoothLE BluetoothService { get; set; }
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/// <summary> Notifies view about changes. </summary>
public event PropertyChangedEventHandler PropertyChanged;
/// <summary> Object to manage update of view model objects from Copri.</summary>
private IPollingUpdateTaskManager m_oViewUpdateManager;
/// <summary>Holds whether to poll or not and the periode leght is polling is on.</summary>
private PollingParameters Polling { get; set; }
/// <summary> Reference on the tink app instance. </summary>
private ITinkApp TinkApp { get; }
/// <summary>Delegate to perform navigation.</summary>
private INavigation m_oNavigation;
#if USEFLYOUT
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/// <summary>Delegate to perform navigation.</summary>
private INavigationMasterDetail m_oNavigationMasterDetail;
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#endif
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private ObservableCollection<Pin> pins;
public ObservableCollection<Pin> Pins
{
get
{
if (pins == null)
pins = new ObservableCollection<Pin>(); // If view model is not binding context pins collection must be set programmatically.
return pins;
}
set => pins = value;
}
/// <summary>Delegate to move map to region.</summary>
private Action<MapSpan> m_oMoveToRegionDelegate;
/// <summary> False if user tabed on station marker to show bikes at a given station.</summary>
private bool isMapPageEnabled = false;
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Model.Services.Geolocation.IGeolocation GeolocationService { get; }
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/// <summary> False if user tabed on station marker to show bikes at a given station.</summary>
public bool IsMapPageEnabled {
get => isMapPageEnabled;
private set
{
if (isMapPageEnabled == value)
return;
isMapPageEnabled = value;
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(IsMapPageEnabled)));
}
}
/// <summary> Prevents an invalid instane to be created. </summary>
/// <param name="tinkApp"> Reference to tink app model.</param>
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/// <param name="moveToRegionDelegate">Delegate to center map and set zoom level.</param>
/// <param name="viewService">View service to notify user.</param>
/// <param name="navigation">Interface to navigate.</param>
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public MapPageViewModel(
ITinkApp tinkApp,
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ILocationPermission permissionsService,
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Plugin.BLE.Abstractions.Contracts.IBluetoothLE bluetoothService,
IGeolocation geolocationService,
Action<MapSpan> moveToRegionDelegate,
IViewService viewService,
INavigation navigation)
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{
TinkApp = tinkApp
?? throw new ArgumentException("Can not instantiate map page view model- object. No tink app object available.");
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PermissionsService = permissionsService ??
throw new ArgumentException($"Can not instantiate {nameof(MapPageViewModel)}. Permissions service object must never be null.");
BluetoothService = bluetoothService ??
throw new ArgumentException($"Can not instantiate {nameof(MapPageViewModel)}. Bluetooth service object must never be null.");
GeolocationService = geolocationService ??
throw new ArgumentException($"Can not instantiate {nameof(MapPageViewModel)}. Geolocation service object must never be null.");
m_oMoveToRegionDelegate = moveToRegionDelegate
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?? throw new ArgumentException("Can not instantiate map page view model- object. No move delegate available.");
ViewService = viewService
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?? throw new ArgumentException("Can not instantiate map page view model- object. No view available.");
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m_oNavigation = navigation
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?? throw new ArgumentException("Can not instantiate map page view model- object. No navigation service available.");
m_oViewUpdateManager = new IdlePollingUpdateTaskManager();
#if USEFLYOUT
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m_oNavigationMasterDetail = new EmptyNavigationMasterDetail();
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#endif
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Polling = PollingParameters.NoPolling;
tinkKonradToggleViewModel = new EmptyToggleViewModel();
IsConnected = TinkApp.GetIsConnected();
}
/// <summary>Sets the stations filter to to apply (Konrad or TINK). </summary>
public IGroupFilterMapPage ActiveFilterMap
{
get => tinkKonradToggleViewModel.FilterDictionary ?? new GroupFilterMapPage();
set
{
tinkKonradToggleViewModel = new TinkKonradToggleViewModel(value);
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(TinkColor)));
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(KonradColor)));
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(IsToggleVisible)));
}
}
#if USEFLYOUT
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/// <summary> Delegate to perform navigation.</summary>
public INavigationMasterDetail NavigationMasterDetail
{
set { m_oNavigationMasterDetail = value; }
}
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#endif
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public Command<PinClickedEventArgs> PinClickedCommand => new Command<PinClickedEventArgs>(
args =>
{
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OnStationClicked(args.Pin.Tag.ToString());
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args.Handled = true; // Prevents map to be centered to selected pin.
});
/// <summary>
/// One time setup: Sets pins into map and connects to events.
/// </summary>
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private void InitializePins(StationDictionary stations)
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{
// Add pins to stations.
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Log.ForContext<MapPageViewModel>().Debug($"Request to draw {stations.Count} pins.");
foreach (var station in stations)
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{
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if (station.Position == null)
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{
// There should be no reason for a position object to be null but this alreay occurred in past.
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Log.ForContext<MapPageViewModel>().Error("Postion object of station {@l_oStation} is null.", station);
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continue;
}
var l_oPin = new Pin
{
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Position = new Xamarin.Forms.GoogleMaps.Position(station.Position.Latitude, station.Position.Longitude),
Label = long.TryParse(station.Id, out long stationId) && stationId > CUSTOM_ICONS_COUNT
? station.GetStationName()
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: string.Empty, // Stations with custom icons have already a id marker. No need for a label.
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Tag = station.Id,
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IsVisible = false, // Set to false to prevent showing default icons (flickering).
};
Pins.Add(l_oPin);
}
}
/// <summary> Update all stations from TINK. </summary>
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/// <param name="stationsColorList">List of colors to apply.</param>
private void UpdatePinsColor(IList<Color> stationsColorList)
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{
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Log.ForContext<MapPageViewModel>().Debug($"Starting update of stations pins color for {stationsColorList.Count} stations...");
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// Update colors of pins.
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for (int pinIndex = 0; pinIndex < stationsColorList.Count; pinIndex++)
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{
var indexPartPrefix = int.TryParse(Pins[pinIndex].Tag.ToString(), out int stationId)
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&& stationId <= CUSTOM_ICONS_COUNT
? $"{stationId}" // there is a station marker with index letter for given station id
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: "Open"; // there is no station marker. Use open marker.
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var colorPartPrefix = GetRessourceNameColorPart(stationsColorList[pinIndex]);
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var l_iName = $"{indexPartPrefix.ToString().PadLeft(2, '0')}_{colorPartPrefix}{(DeviceInfo.Platform == DevicePlatform.Android ? ".png" : string.Empty)}";
try
{
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Pins[pinIndex].Icon = BitmapDescriptorFactory.FromBundle(l_iName);
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}
catch (Exception l_oException)
{
Log.ForContext<MapPageViewModel>().Error("Station icon {l_strName} can not be loaded. {@l_oException}.", l_oException);
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Pins[pinIndex].Label = stationId.ToString();
Pins[pinIndex].Icon = BitmapDescriptorFactory.DefaultMarker(stationsColorList[pinIndex]);
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}
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Pins[pinIndex].IsVisible = true;
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}
var pinsCount = Pins.Count;
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for (int pinIndex = stationsColorList.Count; pinIndex < pinsCount; pinIndex++)
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{
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Log.ForContext<MapPageViewModel>().Error($"Unexpected count of pins detected. Expected {stationsColorList.Count} but is {pinsCount}.");
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Pins[pinIndex].IsVisible = false;
}
Log.ForContext<MapPageViewModel>().Debug("Update of stations pins color done.");
}
/// <summary> Gets the color related part of the ressrouce name.</summary>
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/// <param name="color">Color to get name for.</param>
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/// <returns>Resource name.</returns>
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private static string GetRessourceNameColorPart(Color color)
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{
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if (color == Color.Blue)
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{
return "Blue";
}
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if (color == Color.Green)
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{
return "Green";
}
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if (color == Color.LightBlue)
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{
return "LightBlue";
}
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if (color == Color.Red)
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{
return "Red";
}
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return color.ToString();
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}
/// <summary>
/// Invoked when page is shown.
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/// Starts update process.
/// </summary>
/// <param name="p_oFilterDictionaryMapPage">Holds map page filter settings.</param>
/// <param name="p_oPolling">Holds polling management object.</param>
/// <param name="p_bIsShowWhatsNewRequired">If true whats new page will be shown.</param>
public async Task OnAppearing()
{
try
{
IsRunning = true;
// Process map page.
Polling = TinkApp.Polling;
Log.ForContext<MapPageViewModel>().Information(
$"{(Polling != null && Polling.IsActivated ? $"Map page is appearing. Update periode is {Polling.Periode.TotalSeconds} sec." : "Map page is appearing. Polling is off.")}" +
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$"Current UI language is {Thread.CurrentThread.CurrentUICulture.Name}.");
// Update map page filter
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ActiveFilterMap = TinkApp.GroupFilterMapPage;
ActionText = AppResources.ActivityTextRequestingLocationPermissions;
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ActionText = AppResources.ActivityTextMapLoadingStationsAndBikes;
IsConnected = TinkApp.GetIsConnected();
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Result<StationsAndBikesContainer> resultStationsAndBikes = await TinkApp.GetConnector(IsConnected).Query.GetBikesAndStationsAsync();
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TinkApp.Stations = resultStationsAndBikes.Response.StationsAll;
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await SetStationsOnMap(resultStationsAndBikes.Response.StationsAll);
await HandleAuthCookieNotDefinedException(resultStationsAndBikes.Exception);
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// Update pin colors.
Log.ForContext<MapPageViewModel>().Verbose("Starting update pins color...");
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var colors = GetStationColors(
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Pins.Select(x => x.Tag.ToString()).ToList(),
resultStationsAndBikes.Response.Bikes);
// Update pins color form count of bikes located at station.
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UpdatePinsColor(colors);
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Log.ForContext<MapPageViewModel>().Verbose("Update pins color done.");
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// Move and scale before getting stations and bikes which takes some time.
ActionText = AppResources.ActivityTextCenterMap;
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m_oViewUpdateManager = CreateUpdateTask();
try
{
// Update bikes at station or my bikes depending on context.
await m_oViewUpdateManager.StartUpdateAyncPeridically(Polling);
}
catch (Exception)
{
// Excpetions are handled insde update task;
}
Exception = resultStationsAndBikes.Exception;
ActionText = "";
IsRunning = false;
IsMapPageEnabled = true;
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await MoveMapToCurrentPositionOfUser();
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}
catch (Exception l_oException)
{
Log.ForContext<MapPageViewModel>().Error($"An error occurred switching view TINK/ Konrad.\r\n{l_oException.Message}");
IsRunning = false;
await ViewService.DisplayAlert(
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"Fehler",
$"Beim Anzeigen der Fahrradstandorte- Seite ist ein Fehler aufgetreten.\r\n{l_oException.Message}",
"OK");
IsMapPageEnabled = true;
}
}
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/// <summary>
/// Invoked when the auth cookie is not defined.
/// </summary>
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private async Task HandleAuthCookieNotDefinedException(Exception exception)
{
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if (exception?.GetType() == typeof(AuthcookieNotDefinedException))
{
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Log.ForContext<MapPageViewModel>().Error("Map page is shown (probable for the first time after startup of app) and COPRI auth cookie is not defined. {@l_oException}", exception);
// COPRI reports an auth cookie error.
await ViewService.DisplayAlert(
AppResources.MessageWaring,
AppResources.MessageMapPageErrorAuthcookieUndefined,
AppResources.MessageAnswerOk);
await TinkApp.GetConnector(IsConnected).Command.DoLogout();
TinkApp.ActiveUser.Logout();
}
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}
/// <summary>
/// Sets the available stations on the map.
/// </summary>
private async Task SetStationsOnMap(StationDictionary stations)
{
if (Pins.Count > 0 && Pins.Count != stations.Count)
{
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// Either
// - user logged in/ logged out which might lead to more/ less stations beeing available
// - new stations were added/ existing ones remove
Pins.Clear();
}
// Check if there are alreay any pins to the map
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// i.e detecte first call of member OnAppearing after construction
if (Pins.Count <= 0)
{
Log.ForContext<MapPageViewModel>().Debug($"{(ActiveFilterMap.GetGroup().Any() ? $"Active map filter is {string.Join(",", ActiveFilterMap.GetGroup())}." : "Map filter is off.")}");
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// Map was not yet initialized.
// Get stations from Copri
Log.ForContext<MapPageViewModel>().Verbose("No pins detected on page.");
if (stations.CopriVersion < CopriCallsStatic.UnsupportedVersionLower)
{
await ViewService.DisplayAlert(
AppResources.MessageWaring,
string.Format(AppResources.MessageCopriVersionIsOutdated, ContactPageViewModel.GetAppName(TinkApp.Uris.ActiveUri)),
AppResources.MessageAnswerOk);
Log.ForContext<MapPageViewModel>().Error($"Outdated version of app detected. Version expected is {stations.CopriVersion}.");
}
if (stations.CopriVersion >= CopriCallsStatic.UnsupportedVersionUpper)
{
await ViewService.DisplayAlert(
AppResources.MessageWaring,
string.Format(AppResources.MessageAppVersionIsOutdated, ContactPageViewModel.GetAppName(TinkApp.Uris.ActiveUri)),
AppResources.MessageAnswerOk);
Log.ForContext<MapPageViewModel>().Error($"Outdated version of app detected. Version expected is {stations.CopriVersion}.");
}
// Set pins to their positions on map.
InitializePins(resultStationsAndBikes.Response.StationsAll);
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Log.ForContext<MapPageViewModel>().Verbose("Update of pins done.");
}
}
/// <summary>
/// Moves the map to the current position of the user.
/// If location permission hasn't been granted, the position is not adjusted.
/// </summary>
private async Task MoveMapToCurrentPositionOfUser()
{
Status status = await RequestLocationPermission();
if (status == Status.Granted)
{
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ActionText = AppResources.ActivityTextCenterMap;
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if (TinkApp.CenterMapToCurrentLocation)
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{
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Location currentLocation = null;
try
{
currentLocation = await GeolocationService.GetAsync();
}
catch (Exception ex)
{
Log.ForContext<MapPageViewModel>().Error("Getting location failed. {Exception}", ex);
}
TinkApp.MapSpan = MapSpan.FromCenterAndRadius(
new Xamarin.Forms.GoogleMaps.Position(currentLocation.Latitude, currentLocation.Longitude),
TinkApp.MapSpan.Radius);
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TinkApp.Save();
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}
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MoveAndScale(m_oMoveToRegionDelegate, TinkApp.MapSpan);
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}
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}
/// <summary>
/// Requests the location permission from the user.
/// If the user declines, a dialog prompot is shown, telling the user to toggle the permission in the device settings.
/// </summary>
/// <returns>The permission status.</returns>
private async Task<Status> RequestLocationPermission()
{
// Check location permission
var status = await PermissionsService.CheckStatusAsync();
if (TinkApp.CenterMapToCurrentLocation
&& !GeolocationService.IsSimulation
&& status != Status.Granted)
{
status = await PermissionsService.RequestAsync();
if (status != Status.Granted)
{
var dialogResult = await ViewService.DisplayAlert(
AppResources.MessageTitleHint,
AppResources.MessageCenterMapLocationPermissionOpenDialog,
AppResources.MessageAnswerYes,
AppResources.MessageAnswerNo);
if (dialogResult)
{
// User decided to give access to locations permissions.
PermissionsService.OpenAppSettings();
ActionText = "";
IsRunning = false;
IsMapPageEnabled = true;
}
}
}
return status;
}
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/// <summary> Moves map and scales visible region depending on active filter. </summary>
public static void MoveAndScale(
Action<MapSpan> moveToRegionDelegate,
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MapSpan currentMapSpan = null)
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{
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if (currentMapSpan != null)
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{
// Move to current location.
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moveToRegionDelegate(currentMapSpan);
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return;
}
}
/// <summary> Creates a update task object. </summary>
/// <param name="p_oSynchronizationContext">Object to use for synchronization.</param>
private PollingUpdateTaskManager CreateUpdateTask()
{
// Start task which periodically updates pins.
return new PollingUpdateTaskManager(
() => GetType().Name,
() =>
{
try
{
Log.ForContext<MapPageViewModel>().Verbose("Entering update cycle.");
Result<StationsAndBikesContainer> resultStationsAndBikes;
TinkApp.PostAction(
unused =>
{
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ActionText = AppResources.ActivityTextUpdating;
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IsConnected = TinkApp.GetIsConnected();
},
null);
resultStationsAndBikes = TinkApp.GetConnector(IsConnected).Query.GetBikesAndStationsAsync().Result;
var exception = resultStationsAndBikes.Exception;
if (exception != null)
{
Log.ForContext<MapPageViewModel>().Error("Getting bikes and stations in polling context failed with exception {Exception}.", exception);
}
// Check if there are alreay any pins to the map.
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// If no initialze pins.
if (Pins.Count <= 0)
{
// Set pins to their positions on map.
TinkApp.PostAction(
unused => { InitializePins(resultStationsAndBikes.Response.StationsAll); },
null);
}
// Set/ update pins colors.
var l_oColors = GetStationColors(
Pins.Select(x => x.Tag.ToString()).ToList(),
resultStationsAndBikes.Response.Bikes);
// Update pins color form count of bikes located at station.
TinkApp.PostAction(
unused =>
{
UpdatePinsColor(l_oColors);
ActionText = string.Empty;
Exception = resultStationsAndBikes.Exception;
},
null);
Log.ForContext<MapPageViewModel>().Verbose("Leaving update cycle.");
}
catch (Exception exception)
{
Log.ForContext<MapPageViewModel>().Error("Getting stations and bikes from update task failed. {Exception}", exception);
TinkApp.PostAction(
unused =>
{
Exception = exception;
ActionText = string.Empty;
},
null);
Log.ForContext<MapPageViewModel>().Verbose("Leaving update cycle.");
return;
}
});
}
/// <summary>
/// Invoked when pages is closed/ hidden.
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/// Stops update process.
/// </summary>
public async Task OnDisappearing()
{
Log.Information("Map page is disappearing...");
await m_oViewUpdateManager.StopUpdatePeridically();
}
/// <summary> User clicked on a bike. </summary>
/// <param name="selectedStationId">Id of station user clicked on.</param>
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public async void OnStationClicked(string selectedStationId)
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{
try
{
Log.ForContext<MapPageViewModel>().Information($"User taped station {selectedStationId}.");
// Lock action to prevent multiple instances of "BikeAtStation" being opened.
IsMapPageEnabled = false;
TinkApp.SelectedStation = TinkApp.Stations.FirstOrDefault(x => x.Id == selectedStationId)
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?? new Station(selectedStationId, new List<string>(), null); // Station might not be in list StationDictinaly because this list is not updatd in background task.
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#if TRYNOTBACKSTYLE
m_oNavigation.ShowPage(
typeof(BikesAtStationPage),
p_strStationName);
#else
// Show page.
await ViewService.PushAsync(ViewTypes.BikesAtStation);
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IsMapPageEnabled = true;
ActionText = "";
}
catch (Exception exception)
{
IsMapPageEnabled = true;
ActionText = "";
Log.ForContext<MapPageViewModel>().Error("Fehler beim Öffnen der Ansicht \"Fahrräder an Station\" aufgetreten. {Exception}", exception);
await ViewService.DisplayAlert(
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"Fehler",
$"Fehler beim Öffnen der Ansicht \"Fahrräder an Station\" aufgetreten. {exception.Message}",
"OK");
}
#endif
}
/// <summary>
/// Gets the list of station color for all stations.
/// </summary>
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/// <param name="stationsId">Station id list to get color for.</param>
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/// <returns></returns>
private static IList<Color> GetStationColors(
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IEnumerable<string> stationsId,
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BikeCollection bikesAll)
{
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if (stationsId == null)
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{
Log.ForContext<MapPageViewModel>().Debug("No stations available to update color for.");
return new List<Color>();
}
if (bikesAll == null)
{
// If object is null an error occurred querrying bikes availalbe or bikes occpied which results in an unknown state.
Log.ForContext<MapPageViewModel>().Error("No bikes available to determine pins color.");
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return new List<Color>(stationsId.Select(x => Color.Blue));
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}
// Get state for each station.
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var colors = new List<Color>();
foreach (var stationId in stationsId)
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{
// Get color of given station.
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var bikesAtStation = bikesAll.Where(x => x.CurrentStation == stationId).ToList();
if (bikesAtStation.FirstOrDefault(x => x.State.Value != Model.State.InUseStateEnum.Disposable) != null)
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{
// There is at least one requested or booked bike
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colors.Add(Color.LightBlue);
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continue;
}
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if (bikesAtStation.ToList().Count > 0)
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{
// There is at least one bike available
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colors.Add(Color.Green);
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continue;
}
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colors.Add(Color.Red);
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}
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return colors;
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}
/// <summary>
/// Exception which occurred getting bike information.
/// </summary>
public Exception Exception
{
get
{
return m_oException;
}
private set
{
var statusInfoText = StatusInfoText;
m_oException = value;
if (statusInfoText == StatusInfoText)
{
// Nothing to do because value did not change.
return;
}
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(StatusInfoText)));
}
}
/// <summary> Holds info about current action. </summary>
private string actionText;
/// <summary> Holds info about current action. </summary>
private string ActionText
{
get => actionText;
set
{
var statusInfoText = StatusInfoText;
actionText = value;
if (statusInfoText == StatusInfoText)
{
// Nothing to do because value did not change.
return;
}
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(StatusInfoText)));
}
}
/// <summary> Used to block more than on copri requests at a given time.</summary>
private bool isRunning = false;
/// <summary>
/// True if any action can be performed (request and cancel request)
/// </summary>
public bool IsRunning
{
get => isRunning;
set
{
if (value == isRunning)
return;
Log.ForContext<MapPageViewModel>().Debug($"Switch value of {nameof(isRunning)} to {value}.");
isRunning = value;
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(IsRunning)));
}
}
/// <summary> Holds information whether app is connected to web or not. </summary>
private bool? isConnected = null;
/// <summary>Exposes the is connected state. </summary>
private bool IsConnected
{
get => isConnected ?? false;
set
{
var statusInfoText = StatusInfoText;
isConnected = value;
if (statusInfoText == StatusInfoText)
{
// Nothing to do.
return;
}
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(StatusInfoText)));
}
}
/// <summary> Holds the status information text. </summary>
public string StatusInfoText
{
get
{
if (Exception != null)
{
// An error occurred getting data from copri.
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return TinkApp.IsReportLevelVerbose
? Exception.GetShortErrorInfoText()
: AppResources.ActivityTextException;
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}
if (!IsConnected)
{
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return AppResources.ActivityTextConnectionStateOffline;
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}
return ActionText ?? string.Empty;
}
}
/// <summary> Command object to bind login button to view model.</summary>
public System.Windows.Input.ICommand OnToggleTinkToKonrad => new Xamarin.Forms.Command(async () => await ToggleTinkToKonrad());
/// <summary> Command object to bind login button to view model.</summary>
public System.Windows.Input.ICommand OnToggleKonradToTink => new Xamarin.Forms.Command(async () => await ToggleKonradToTink());
/// <summary> Manages toggle functionality. </summary>
private ITinkKonradToggleViewModel tinkKonradToggleViewModel;
/// <summary> User request to toggle from TINK to Konrad. </summary>
public async Task ToggleTinkToKonrad()
{
if (tinkKonradToggleViewModel.CurrentFilter == FilterHelper.FILTERKONRAD)
{
// Konrad is already activated, nothing to do.
return;
}
Log.ForContext<MapPageViewModel>().Information("User toggles to Konrad.");
await ActivateFilter(FilterHelper.FILTERTINKGENERAL);
}
/// <summary> User request to toggle from TINK to Konrad. </summary>
public async Task ToggleKonradToTink()
{
if (tinkKonradToggleViewModel.CurrentFilter == FilterHelper.FILTERTINKGENERAL)
{
// Konrad is already activated, nothing to do.
return;
}
Log.ForContext<MapPageViewModel>().Information("User toggles to TINK.");
await ActivateFilter(FilterHelper.FILTERKONRAD);
}
/// <summary> User request to toggle from TINK to Konrad. </summary>
private async Task ActivateFilter(string p_strSelectedFilter)
{
try
{
Log.ForContext<MapPageViewModel>().Information($"Request to toggle to \"{p_strSelectedFilter}\".");
// Stop polling.
await m_oViewUpdateManager.StopUpdatePeridically();
// Clear error info.
Exception = null;
// Toggle view
tinkKonradToggleViewModel = new TinkKonradToggleViewModel(ActiveFilterMap).DoToggle();
ActiveFilterMap = tinkKonradToggleViewModel.FilterDictionary;
TinkApp.GroupFilterMapPage = ActiveFilterMap;
TinkApp.Save();
TinkApp.UpdateConnector();
Pins.Clear();
// Check location permission
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var status = await PermissionsService.CheckStatusAsync();
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if (TinkApp.CenterMapToCurrentLocation
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&& !GeolocationService.IsSimulation
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&& status != Status.Granted)
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{
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var permissionResult = await PermissionsService.RequestAsync();
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if (permissionResult != Status.Granted)
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{
var dialogResult = await ViewService.DisplayAlert(
AppResources.MessageTitleHint,
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AppResources.MessageBikesManagementLocationPermission,
"Ja",
"Nein");
if (dialogResult)
{
// User decided to give access to locations permissions.
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PermissionsService.OpenAppSettings();
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IsMapPageEnabled = true;
ActionText = "";
return;
}
}
// Do not use property .State to get bluetooth state due
// to issue https://hausource.visualstudio.com/TINK/_workitems/edit/116 /
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// see https://github.com/xabre/xamarin-bluetooth-le/issues/112#issuecomment-380994887
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if (await BluetoothService.GetBluetoothState() != Plugin.BLE.Abstractions.Contracts.BluetoothState.On)
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{
await ViewService.DisplayAlert(
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AppResources.MessageTitleHint,
AppResources.MessageBikesManagementBluetoothActivation,
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AppResources.MessageAnswerOk);
IsMapPageEnabled = true;
ActionText = "";
return;
}
}
// Move and scale before getting stations and bikes which takes some time.
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if (TinkApp.CenterMapToCurrentLocation)
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{
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Location currentLocation = null;
try
{
currentLocation = await GeolocationService.GetAsync();
}
catch (Exception ex)
{
Log.ForContext<MapPageViewModel>().Error("Getting location failed. {Exception}", ex);
}
TinkApp.MapSpan = MapSpan.FromCenterAndRadius(
new Xamarin.Forms.GoogleMaps.Position(currentLocation.Latitude, currentLocation.Longitude),
TinkApp.MapSpan.Radius);
TinkApp.Save();
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}
// Update stations
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MoveAndScale(m_oMoveToRegionDelegate, TinkApp.MapSpan);
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IsConnected = TinkApp.GetIsConnected();
var resultStationsAndBikes = await TinkApp.GetConnector(IsConnected).Query.GetBikesAndStationsAsync();
// Set pins to their positions on map.
InitializePins(resultStationsAndBikes.Response.StationsAll);
Log.ForContext<MapPageViewModel>().Verbose("Update of pins on toggle done...");
// Update pin colors.
Log.ForContext<MapPageViewModel>().Verbose("Starting update pins color on toggle...");
var l_oColors = GetStationColors(
Pins.Select(x => x.Tag.ToString()).ToList(),
resultStationsAndBikes.Response.Bikes);
// Update pins color form count of bikes located at station.
UpdatePinsColor(l_oColors);
Log.ForContext<MapPageViewModel>().Verbose("Update pins color done.");
try
{
// Update bikes at station or my bikes depending on context.
await m_oViewUpdateManager.StartUpdateAyncPeridically(Polling);
}
catch (Exception)
{
// Excpetions are handled insde update task;
}
Log.ForContext<MapPageViewModel>().Information($"Toggle to \"{p_strSelectedFilter}\" done.");
}
catch (Exception l_oException)
{
Log.ForContext<MapPageViewModel>().Error("An error occurred switching view TINK/ Konrad.{}");
await ViewService.DisplayAlert(
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"Fehler",
$"Beim Umschalten TINK/ Konrad ist ein Fehler aufgetreten.\r\n{l_oException.Message}",
"OK");
}
}
public Color TinkColor => tinkKonradToggleViewModel.TinkColor;
public Color KonradColor => tinkKonradToggleViewModel.KonradColor;
public bool IsToggleVisible => tinkKonradToggleViewModel.IsToggleVisible;
}
}