mirror of
https://dev.azure.com/TeilRad/sharee.bike%20App/_git/Code
synced 2024-04-29 06:57:11 +02:00
697 lines
22 KiB
C#
697 lines
22 KiB
C#
using Xamarin.Forms;
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using TINK.View;
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using TINK.Model.Station;
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using System;
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using System.Linq;
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using TINK.Model.Bikes;
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using TINK.Repository.Exception;
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using TINK.Model;
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using Serilog;
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using System.Collections.Generic;
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using System.Threading.Tasks;
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using System.ComponentModel;
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using Xamarin.Forms.GoogleMaps;
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using System.Collections.ObjectModel;
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#if USEFLYOUT
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using TINK.View.MasterDetail;
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#endif
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using TINK.Services.Permissions;
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using Xamarin.Essentials;
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using System.Threading;
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using TINK.MultilingualResources;
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using TINK.Repository;
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using TINK.Services.Geolocation;
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using TINK.Model.State;
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using TINK.ViewModel.Map;
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namespace TINK.ViewModel.Contact
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{
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public class SelectStationPageViewModel : INotifyPropertyChanged
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{
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/// <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>
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private IViewService ViewService { get; }
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/// <summary>
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/// Holds the exception which occurred getting bikes occupied information.
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/// </summary>
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private Exception m_oException;
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/// <summary>
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/// Service to query/ manage permissions (location) of the app.
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/// </summary>
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private ILocationPermission PermissionsService { get; }
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/// <summary>
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/// Service to manage bluetooth stack.
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/// </summary>
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private Plugin.BLE.Abstractions.Contracts.IBluetoothLE BluetoothService { get; set; }
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/// <summary> Notifies view about changes. </summary>
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public event PropertyChangedEventHandler PropertyChanged;
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/// <summary> Reference on the tink app instance. </summary>
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private ITinkApp TinkApp { get; }
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/// <summary>Delegate to perform navigation.</summary>
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private INavigation m_oNavigation;
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#if USEFLYOUT
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/// <summary>Delegate to perform navigation.</summary>
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private INavigationMasterDetail m_oNavigationMasterDetail;
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#endif
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private ObservableCollection<Pin> pins;
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public ObservableCollection<Pin> Pins
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{
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get
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{
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if (pins == null)
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pins = new ObservableCollection<Pin>(); // If view model is not binding context pins collection must be set programmatically.
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return pins;
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}
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set => pins = value;
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}
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/// <summary>Delegate to move map to region.</summary>
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private Action<MapSpan> m_oMoveToRegionDelegate;
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/// <summary> False if user tabed on station marker to show bikes at a given station.</summary>
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private bool isMapPageEnabled = false;
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IGeolocation GeolocationService { get; }
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/// <summary> False if user tabed on station marker to show bikes at a given station.</summary>
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public bool IsMapPageEnabled
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{
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get => isMapPageEnabled;
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private set
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{
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if (isMapPageEnabled == value)
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return;
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isMapPageEnabled = value;
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(IsMapPageEnabled)));
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}
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}
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/// <summary> Prevents an invalid instane to be created. </summary>
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/// <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>
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/// <param name="viewService">View service to notify user.</param>
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/// <param name="navigation">Interface to navigate.</param>
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public SelectStationPageViewModel(
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ITinkApp tinkApp,
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ILocationPermission permissionsService,
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Plugin.BLE.Abstractions.Contracts.IBluetoothLE bluetoothService,
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IGeolocation geolocationService,
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Action<MapSpan> moveToRegionDelegate,
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IViewService viewService,
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INavigation navigation)
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{
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TinkApp = tinkApp
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?? throw new ArgumentException("Can not instantiate map page view model- object. No tink app object available.");
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PermissionsService = permissionsService ??
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throw new ArgumentException($"Can not instantiate {nameof(SelectStationPageViewModel)}. Permissions service object must never be null.");
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BluetoothService = bluetoothService ??
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throw new ArgumentException($"Can not instantiate {nameof(SelectStationPageViewModel)}. Bluetooth service object must never be null.");
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GeolocationService = geolocationService ??
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throw new ArgumentException($"Can not instantiate {nameof(SelectStationPageViewModel)}. Geolocation service object must never be null.");
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m_oMoveToRegionDelegate = moveToRegionDelegate
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?? throw new ArgumentException("Can not instantiate map page view model- object. No move delegate available.");
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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.");
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#if USEFLYOUT
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m_oNavigationMasterDetail = new EmptyNavigationMasterDetail();
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#endif
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IsConnected = TinkApp.GetIsConnected();
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}
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#if USEFLYOUT
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/// <summary> Delegate to perform navigation.</summary>
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public INavigationMasterDetail NavigationMasterDetail
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{
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set { m_oNavigationMasterDetail = value; }
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}
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#endif
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public Command<PinClickedEventArgs> PinClickedCommand => new Command<PinClickedEventArgs>(
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args =>
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{
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OnStationClicked(args.Pin.Tag.ToString());
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args.Handled = true; // Prevents map to be centered to selected pin.
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});
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/// <summary>
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/// One time setup: Sets pins into map and connects to events.
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/// </summary>
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private async void InitializePins(StationDictionary stations)
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{
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// Add pins to stations.
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Log.ForContext<SelectStationPageViewModel>().Debug($"Request to draw {stations.Count} pins.");
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foreach (var station in stations)
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{
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if (station.Position == null)
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{
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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<SelectStationPageViewModel>().Error("Postion object of station {@l_oStation} is null.", station);
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continue;
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}
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var l_oPin = new Pin
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{
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Position = new Xamarin.Forms.GoogleMaps.Position(station.Position.Latitude, station.Position.Longitude),
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Label = long.TryParse(station.Id, out long stationId) && stationId > CUSTOM_ICONS_COUNT
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? 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).
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};
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Pins.Add(l_oPin);
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}
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//Add blue dot for showing current location of user
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var status = await PermissionsService.CheckStatusAsync();
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if (status == Status.Granted)
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{
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Location currentLocation = null;
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try
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{
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currentLocation = await GeolocationService.GetAsync();
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}
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catch (Exception ex)
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{
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Log.ForContext<MapPageViewModel>().Error("Getting location failed. {Exception}", ex);
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}
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if (currentLocation != null)
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{
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var currentLocationPin = new Pin()
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{
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Position = new Xamarin.Forms.GoogleMaps.Position(currentLocation.Latitude, currentLocation.Longitude),
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Label = "currentLocationPin",
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Type = PinType.Place,
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Tag = "NotClickable",
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Icon = BitmapDescriptorFactory.FromBundle(currentLocationPinName)
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};
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Pins.Add(currentLocationPin);
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}
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}
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}
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public string currentLocationPinName = $"Location_Pin{(DeviceInfo.Platform == DevicePlatform.Android ? ".png" : string.Empty)}";
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/// <summary> Update all stations from TINK. </summary>
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/// <param name="stationsColorList">List of colors to apply.</param>
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private void UpdatePinsColor(IList<Color> stationsColorList)
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{
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Log.ForContext<SelectStationPageViewModel>().Debug($"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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{
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if (Pins[pinIndex].Tag.ToString() == "NotClickable")
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{
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Pins[pinIndex].Icon = BitmapDescriptorFactory.FromBundle(currentLocationPinName);
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}
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else
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{
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var indexPartPrefix = int.TryParse(Pins[pinIndex].Tag.ToString(), out int stationId)
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&& stationId <= CUSTOM_ICONS_COUNT
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? $"{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 = $"{indexPartPrefix.ToString().PadLeft(2, '0')}_{colorPartPrefix}{(DeviceInfo.Platform == DevicePlatform.Android ? ".png" : string.Empty)}";
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try
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{
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Pins[pinIndex].Icon = BitmapDescriptorFactory.FromBundle(l_iName);
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}
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catch (Exception l_oException)
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{
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Log.ForContext<SelectStationPageViewModel>().Error("Station icon {l_strName} can not be loaded. {@l_oException}.", l_oException);
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Pins[pinIndex].Label = stationId.ToString();
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Pins[pinIndex].Icon = BitmapDescriptorFactory.DefaultMarker(stationsColorList[pinIndex]);
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}
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}
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Pins[pinIndex].IsVisible = true;
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}
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var pinsCount = Pins.Count;
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for (int pinIndex = stationsColorList.Count; pinIndex < pinsCount; pinIndex++)
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{
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Log.ForContext<SelectStationPageViewModel>().Error($"Unexpected count of pins detected. Expected {stationsColorList.Count} but is {pinsCount}.");
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Pins[pinIndex].IsVisible = false;
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}
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Log.ForContext<SelectStationPageViewModel>().Debug("Update of stations pins color done.");
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}
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/// <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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{
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return "Blue";
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}
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if (color == Color.Green)
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{
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return "Green";
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}
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if (color == Color.LightBlue)
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{
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return "LightBlue";
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}
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if (color == Color.Red)
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{
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return "Red";
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}
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return color.ToString();
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}
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/// <summary>
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/// Invoked when page is shown.
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/// Starts update process.
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/// </summary>
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/// <param name="p_oFilterDictionaryMapPage">Holds map page filter settings.</param>
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/// <param name="p_oPolling">Holds polling management object.</param>
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/// <param name="p_bIsShowWhatsNewRequired">If true whats new page will be shown.</param>
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public async Task OnAppearing()
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{
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try
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{
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IsRunning = true;
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// Process map page.
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Log.ForContext<SelectStationPageViewModel>().Information(
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$"Current UI language is {Thread.CurrentThread.CurrentUICulture.Name}.");
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if (Pins.Count <= 0)
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{
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// 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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ActionText = AppResources.ActivityTextRequestingLocationPermissions;
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// Check location permission
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var status = await PermissionsService.CheckStatusAsync();
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if (!GeolocationService.IsSimulation
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&& status != Status.Granted)
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{
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var dialogResult = await ViewService.DisplayAlert(
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AppResources.MessageTitleHint,
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AppResources.MessageCenterMapLocationPermissionOpenDialog,
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AppResources.MessageAnswerYes,
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AppResources.MessageAnswerNo);
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if (dialogResult)
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{
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// User decided to give access to locations permissions.
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PermissionsService.OpenAppSettings();
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ActionText = "";
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IsRunning = false;
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IsMapPageEnabled = true;
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return;
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}
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}
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if (status == Status.Granted)
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{
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ActionText = AppResources.ActivityTextCenterMap;
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Location currentLocation = null;
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try
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{
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currentLocation = TinkApp.CenterMapToCurrentLocation
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? await GeolocationService.GetAsync()
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: null;
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}
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catch (Exception ex)
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{
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Log.ForContext<SelectStationPageViewModel>().Error("Getting location failed. {Exception}", ex);
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}
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MoveAndScale(m_oMoveToRegionDelegate, TinkApp.Uris.ActiveUri, currentLocation);
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}
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}
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}
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ActionText = AppResources.ActivityTextMapLoadingStationsAndBikes;
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IsConnected = TinkApp.GetIsConnected();
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var resultStationsAndBikes = await TinkApp.GetConnector(IsConnected).Query.GetBikesAndStationsAsync();
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TinkApp.Stations = resultStationsAndBikes.Response.StationsAll;
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TinkApp.ResourceUrls = resultStationsAndBikes.GeneralData.ResourceUrls;
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if (Pins.Count > 0 && Pins.Count != resultStationsAndBikes.Response.StationsAll.Count)
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{
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// Either
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// - user logged in/ logged out which might lead to more/ less stations beeing available
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// - new stations were added/ existing ones remove
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Pins.Clear();
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}
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// Check if there are alreay any pins to the map
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// i.e detecte first call of member OnAppearing after construction
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if (Pins.Count <= 0)
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{
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// Map was not yet initialized.
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// Get stations from Copri
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Log.ForContext<SelectStationPageViewModel>().Verbose("No pins detected on page.");
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if (resultStationsAndBikes.Response.StationsAll.CopriVersion < CopriCallsStatic.UnsupportedVersionLower)
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{
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await ViewService.DisplayAlert(
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AppResources.MessageWaring,
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string.Format(AppResources.MessageCopriVersionIsOutdated, TinkApp.Flavor.GetDisplayName()),
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AppResources.MessageAnswerOk);
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Log.ForContext<SelectStationPageViewModel>().Error($"Outdated version of app detected. Version expected is {resultStationsAndBikes.Response.StationsAll.CopriVersion}.");
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}
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if (resultStationsAndBikes.Response.StationsAll.CopriVersion >= CopriCallsStatic.UnsupportedVersionUpper)
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{
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await ViewService.DisplayAlert(
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AppResources.MessageWaring,
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string.Format(AppResources.MessageAppVersionIsOutdated, TinkApp.Flavor.GetDisplayName()),
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AppResources.MessageAnswerOk);
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Log.ForContext<SelectStationPageViewModel>().Error($"Outdated version of app detected. Version expected is {resultStationsAndBikes.Response.StationsAll.CopriVersion}.");
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}
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// Set pins to their positions on map.
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InitializePins(resultStationsAndBikes.Response.StationsAll);
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Log.ForContext<SelectStationPageViewModel>().Verbose("Update of pins done.");
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}
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if (resultStationsAndBikes.Exception?.GetType() == typeof(AuthcookieNotDefinedException))
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{
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Log.ForContext<SelectStationPageViewModel>().Error("Map page is shown (probable for the first time after startup of app) and COPRI auth cookie is not defined. {@l_oException}", resultStationsAndBikes.Exception);
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// COPRI reports an auth cookie error.
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await ViewService.DisplayAlert(
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AppResources.MessageWaring,
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AppResources.MessageMapPageErrorAuthcookieUndefined,
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AppResources.MessageAnswerOk);
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IsConnected = TinkApp.GetIsConnected();
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await TinkApp.GetConnector(IsConnected).Command.DoLogout();
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TinkApp.ActiveUser.Logout();
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}
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// Update pin colors.
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Log.ForContext<SelectStationPageViewModel>().Verbose("Starting update pins color...");
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var colors = GetStationColors(
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Pins.Select(x => x.Tag.ToString()).ToList(),
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resultStationsAndBikes.Response.Bikes);
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// Update pins color form count of bikes located at station.
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UpdatePinsColor(colors);
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Log.ForContext<SelectStationPageViewModel>().Verbose("Update pins color done.");
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Exception = resultStationsAndBikes.Exception;
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ActionText = "";
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IsRunning = false;
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IsMapPageEnabled = true;
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}
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catch (Exception l_oException)
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{
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Log.ForContext<SelectStationPageViewModel>().Error($"An error occurred opening select station page.\r\n{l_oException.Message}");
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IsRunning = false;
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await ViewService.DisplayAlert(
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"Fehler",
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$"Beim Anzeigen der Fahrradstandorte- Seite ist ein Fehler aufgetreten.\r\n{l_oException.Message}",
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"OK");
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IsMapPageEnabled = true;
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}
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}
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/// <summary> Moves map and scales visible region depending on active filter. </summary>
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public static void MoveAndScale(
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Action<MapSpan> moveToRegionDelegate,
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Uri activeUri,
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Location currentLocation = null)
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{
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if (currentLocation != null)
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{
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// Move to current location.
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moveToRegionDelegate(MapSpan.FromCenterAndRadius(
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new Xamarin.Forms.GoogleMaps.Position(currentLocation.Latitude, currentLocation.Longitude),
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Distance.FromKilometers(1.0)));
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return;
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}
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// Center map to Freiburg
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moveToRegionDelegate(MapSpan.FromCenterAndRadius(
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new Xamarin.Forms.GoogleMaps.Position(47.995865, 7.815086),
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Distance.FromKilometers(2.9)));
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}
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/// <summary> User clicked on a bike. </summary>
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/// <param name="selectedStationId">Id of station user clicked on.</param>
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public async void OnStationClicked(string selectedStationId)
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{
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//Make shure currentLocationPin can not be clicked
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if (selectedStationId != "NotClickable")
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{
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try
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{
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Log.ForContext<SelectStationPageViewModel>().Information($"User taped station {selectedStationId}.");
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// Lock action to prevent multiple instances of "BikeAtStation" being opened.
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IsMapPageEnabled = false;
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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
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m_oNavigation.ShowPage(
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typeof(BikesAtStationPage),
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p_strStationName);
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#else
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#if USEFLYOUT
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// Show page.
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ViewService.ShowPage(ViewTypes.ContactPage, AppResources.MarkingContactPageTitle);
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#else
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await ViewService.ShowPage("//ContactPage");
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#endif
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IsMapPageEnabled = true;
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ActionText = "";
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}
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catch (Exception exception)
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{
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IsMapPageEnabled = true;
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ActionText = "";
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|
|
|
Log.ForContext<SelectStationPageViewModel>().Error("Fehler beim Öffnen der Ansicht \"Fahrräder an Station\" aufgetreten. {Exception}", exception);
|
|
await ViewService.DisplayAlert(
|
|
"Fehler",
|
|
$"Fehler beim Öffnen der Ansicht \"Fahrräder an Station\" aufgetreten. {exception.Message}",
|
|
"OK");
|
|
}
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the list of station color for all stations.
|
|
/// </summary>
|
|
/// <param name="stationsId">Station id list to get color for.</param>
|
|
/// <returns></returns>
|
|
private static IList<Color> GetStationColors(
|
|
IEnumerable<string> stationsId,
|
|
BikeCollection bikesAll)
|
|
{
|
|
if (stationsId == null)
|
|
{
|
|
Log.ForContext<SelectStationPageViewModel>().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<SelectStationPageViewModel>().Error("No bikes available to determine pins color.");
|
|
return new List<Color>(stationsId.Select(x => Color.Blue));
|
|
}
|
|
|
|
// Get state for each station.
|
|
var colors = new List<Color>();
|
|
foreach (var stationId in stationsId)
|
|
{
|
|
if (stationId != "NotClickable")
|
|
{
|
|
// Get color of given station.
|
|
var bikesAtStation = bikesAll.Where(x => x.StationId == stationId).ToList();
|
|
if (bikesAtStation.FirstOrDefault(x => x.State.Value.IsOccupied()) != null)
|
|
{
|
|
// There is at least one requested or booked bike
|
|
colors.Add(Color.LightBlue);
|
|
continue;
|
|
}
|
|
|
|
if (bikesAtStation.ToList().Count > 0)
|
|
{
|
|
// There is at least one bike available
|
|
colors.Add(Color.Green);
|
|
continue;
|
|
}
|
|
|
|
colors.Add(Color.Red);
|
|
}
|
|
}
|
|
|
|
return colors;
|
|
}
|
|
|
|
/// <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<SelectStationPageViewModel>().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.
|
|
return Exception.GetShortErrorInfoText(TinkApp.IsReportLevelVerbose);
|
|
|
|
}
|
|
|
|
if (!IsConnected)
|
|
{
|
|
return AppResources.ActivityTextConnectionStateOffline;
|
|
}
|
|
|
|
return ActionText ?? string.Empty;
|
|
}
|
|
}
|
|
}
|
|
}
|