mirror of
https://dev.azure.com/TeilRad/sharee.bike%20App/_git/Code
synced 2024-09-28 01:46:25 +02:00
417 lines
13 KiB
C#
417 lines
13 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Threading.Tasks;
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using System.Windows.Input;
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using Plugin.Connectivity;
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using Serilog;
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using ShareeBike.Model;
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using ShareeBike.Model.User;
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using ShareeBike.Model.User.Account;
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using ShareeBike.MultilingualResources;
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using ShareeBike.Repository.Exception;
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using ShareeBike.View;
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using ShareeBike.ViewModel.Account;
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using ShareeBike.ViewModel.Map;
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using Xamarin.Forms;
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namespace ShareeBike.ViewModel
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{
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public class LoginPageViewModel : INotifyPropertyChanged
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{
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/// <summary>
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/// Reference on view service to show modal notifications and to perform navigation.
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/// </summary>
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private readonly IViewService m_oViewService;
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/// <summary> Reference on the shareeBike app instance. </summary>
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private IShareeBikeApp ShareeBikeApp { get; }
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/// <summary>
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/// Holds the mail address candidate being entered by user.
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/// </summary>
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private string m_strMailAddress;
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/// <summary>
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/// Holds the password candidate being entered by user.
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/// </summary>
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private string m_strPassword;
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private bool m_bMailAndPasswordCandidatesOk = false;
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/// <summary> Holds a reference to the external trigger service. </summary>
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private Action<string> OpenUrlInExternalBrowser { get; }
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/// <summary>
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/// Event which notifies clients about changed properties.
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/// </summary>
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public event PropertyChangedEventHandler PropertyChanged;
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/// <summary> Used to block more than on copri requests at a given time.</summary>
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private bool isIdle = true;
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/// <summary>
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/// True if any action can be performed (login etc.)
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/// </summary>
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public virtual bool IsIdle
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{
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get => isIdle;
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set
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{
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if (value == isIdle)
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return;
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Log.ForContext<LoginPageViewModel>().Debug($"Switch value of {nameof(IsIdle)} to {value}.");
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isIdle = value;
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(IsIdle)));
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(IsProcessWithRunningProcessView)));
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}
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}
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public bool IsProcessWithRunningProcessView => !isIdle;
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/// <summary> Holds info about current action. </summary>
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private string statusInfoText;
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/// <summary> Holds info about current action. </summary>
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public string StatusInfoText
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{
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get => statusInfoText;
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set
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{
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if (value == statusInfoText)
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return;
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Log.ForContext<LoginPageViewModel>().Debug($"Switch value of {nameof(StatusInfoText)} to {value}.");
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statusInfoText = value;
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(StatusInfoText)));
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}
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="p_oSetCredentials">Delegate to set new mail address and password to model.</param>
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/// <param name="p_oUser">Mail address of user if login succeeded.</param>
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/// <param name="openUrlInExternalBrowser">Action to open an external browser.</param>
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/// <param name="p_oViewService">Interface to actuate methods on GUI.</param>
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/// <param name="p_oNavigation">Interface to navigate.</param>
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public LoginPageViewModel(
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IShareeBikeApp shareeBikeApp,
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Action<string> openUrlInExternalBrowser,
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IViewService p_oViewService)
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{
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ShareeBikeApp = shareeBikeApp
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?? throw new ArgumentException("Can not instantiate map page view model- object. No shareeBike app object available.");
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OpenUrlInExternalBrowser = openUrlInExternalBrowser
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?? throw new ArgumentException("Can not instantiate login page view model- object. No user external browse service available.");
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m_oViewService = p_oViewService
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?? throw new ArgumentException("Can not instantiate login page view model- object. No view available.");
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m_strMailAddress = shareeBikeApp.ActiveUser.Mail;
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m_strPassword = shareeBikeApp.ActiveUser.Password;
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IsRegisterTargetsInfoVisible = new List<string> { Model.Services.CopriApi.ServerUris.CopriServerUriList.ShareeBike_LIVE, Model.Services.CopriApi.ServerUris.CopriServerUriList.ShareeBike_DEVEL }.Contains(shareeBikeApp.Uris.ActiveUri.AbsoluteUri);
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shareeBikeApp.ActiveUser.StateChanged += OnStateChanged;
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}
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/// <summary>
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/// Login state changed.
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/// </summary>
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/// <param name="p_oSender"></param>
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/// <param name="p_oEventArgs"></param>
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private void OnStateChanged(object p_oSender, EventArgs p_oEventArgs)
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{
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var l_oPropertyChanged = PropertyChanged;
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if (l_oPropertyChanged != null)
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{
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l_oPropertyChanged(this, new PropertyChangedEventArgs(nameof(IsLoggedOut)));
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l_oPropertyChanged(this, new PropertyChangedEventArgs(nameof(IsLoginRequestAllowed)));
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l_oPropertyChanged(this, new PropertyChangedEventArgs(nameof(MailAddress)));
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l_oPropertyChanged(this, new PropertyChangedEventArgs(nameof(Password)));
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}
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}
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/// <summary> Gets a value indicating whether user is logged out or not.</summary>
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public bool IsLoggedOut { get { return !ShareeBikeApp.ActiveUser.IsLoggedIn; } }
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/// <summary> Gets a value indicating whether user can try to login.</summary>
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public bool IsLoginRequestAllowed
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{
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get
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{
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return !ShareeBikeApp.ActiveUser.IsLoggedIn
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&& m_bMailAndPasswordCandidatesOk;
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}
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}
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/// <summary> Gets mail address of user.</summary>
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public string MailAddress
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{
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get
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{
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return m_strMailAddress;
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}
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set
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{
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m_strMailAddress = value;
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UpdateAndFireIfRequiredOnEnteringMailOrPwd();
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}
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}
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/// <summary> Gets password user.</summary>
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public string Password
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{
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get
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{
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return m_strPassword;
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}
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set
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{
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m_strPassword = value;
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UpdateAndFireIfRequiredOnEnteringMailOrPwd();
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}
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}
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/// <summary>Update on password or mailaddress set. </summary>
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private void UpdateAndFireIfRequiredOnEnteringMailOrPwd()
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{
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var l_bLastMailAndPasswordCandidatesOk = m_bMailAndPasswordCandidatesOk;
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m_bMailAndPasswordCandidatesOk = Validator.ValidateMailAndPasswordDelegate(MailAddress, Password).ValidElement == Elements.Account;
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if (m_bMailAndPasswordCandidatesOk != l_bLastMailAndPasswordCandidatesOk)
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{
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(IsLoginRequestAllowed)));
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}
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}
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/// <summary>
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/// Command object to bind login button to view model.
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/// </summary>
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public ICommand OnLoginRequest => new Command(async () => await Login());
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/// <summary> Processes request to register a new user. </summary>
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public ICommand OnRegisterRequest => new Command(async () =>
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{
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if (CrossConnectivity.Current.IsConnected)
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{
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await m_oViewService.PushAsync(ViewTypes.RegisterPage);
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}
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else
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{
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await m_oViewService.DisplayAlert(
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AppResources.MessageHintTitle,
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AppResources.ErrorNoWeb,
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AppResources.MessageAnswerOk);
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}
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});
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/// <summary> Processes request to recover password. </summary>
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public ICommand OnPasswordForgottonRequest => new Command(async () =>
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{
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if (CrossConnectivity.Current.IsConnected)
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{
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await m_oViewService.PushAsync(ViewTypes.PasswordForgottenPage);
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}
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else
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{
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await m_oViewService.DisplayAlert(
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AppResources.MessageHintTitle,
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AppResources.ErrorNoWeb,
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AppResources.MessageAnswerOk);
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}
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});
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/// <summary>
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/// User request to log in.
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/// </summary>
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public async Task Login()
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{
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if (!IsLoginRequestAllowed)
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{
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if(ShareeBikeApp.ActiveUser.IsLoggedIn)
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{
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await m_oViewService.DisplayAlert(
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AppResources.ErrorLoginTitle,
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string.Format(AppResources.ErrorLoginAlreadyLoggedIn,ShareeBikeApp.ActiveUser.Mail),
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AppResources.MessageAnswerOk);
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}
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else if (!m_bMailAndPasswordCandidatesOk)
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{
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await m_oViewService.DisplayAlert(
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AppResources.ErrorLoginTitle,
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AppResources.ErrorLoginInvalidMailOrPasswortInput,
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AppResources.MessageAnswerOk);
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}
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return;
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}
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else
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{
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IsIdle = false;
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StatusInfoText = AppResources.ActivityTextOneMomentPlease;
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IAccount account = new EmptyAccount();
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try
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{
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Log.ForContext<LoginPageViewModel>().Information("User taped login button.");
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try
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{
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ShareeBikeApp.ActiveUser.CheckIsPasswordValid(MailAddress, Password);
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// Do login.
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account = await ShareeBikeApp.GetConnector(CrossConnectivity.Current.IsConnected).Command.DoLogin(MailAddress, Password, ShareeBikeApp.ActiveUser.DeviceId);
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await ShareeBikeApp.ActiveUser.Login(account);
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// Update map page filter because user might be of both groups Cargo and Citybike.
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ShareeBikeApp.GroupFilterMapPage =
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GroupFilterMapPageHelper.CreateUpdated(
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ShareeBikeApp.GroupFilterMapPage,
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ShareeBikeApp.ActiveUser.DoFilter(ShareeBikeApp.FilterGroupSetting.DoFilter()));
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// Update settings page filter because user might be of both groups Cargo and Citybike.
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ShareeBikeApp.FilterGroupSetting.DoFilter(ShareeBikeApp.ActiveUser.Group);
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// Persist new settings.
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ShareeBikeApp.Save();
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ShareeBikeApp.UpdateConnector();
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}
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catch (InvalidAuthorizationResponseException l_oException)
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{
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// Copri response is invalid.
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Log.ForContext<LoginPageViewModel>().Error("Login failed (invalid. auth. response). {@l_oException}.", l_oException);
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await m_oViewService.DisplayAlert(
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AppResources.ErrorLoginTitle,
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AppResources.ErrorLoginInvalidAuthorization,
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AppResources.MessageAnswerOk);
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IsIdle = true;
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StatusInfoText = string.Empty;
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return;
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}
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catch (UnsupportedCopriVersionDetectedException)
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{
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await m_oViewService.DisplayAlert(
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AppResources.ErrorLoginTitle,
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string.Format(
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AppResources.MessageAppVersionIsOutdated,
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ShareeBikeApp.Flavor.GetDisplayName()),
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AppResources.MessageAnswerOk);
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IsIdle = true;
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StatusInfoText = string.Empty;
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return;
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}
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catch (Exception l_oException)
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{
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// Copri server is not reachable.
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if (l_oException is WebConnectFailureException)
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{
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Log.ForContext<LoginPageViewModel>().Information("Login failed (web communication exception). {@l_oException}.", l_oException);
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await m_oViewService.DisplayAlert(
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AppResources.ErrorNoConnectionTitle,
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AppResources.ErrorNoWeb,
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AppResources.MessageAnswerOk);
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}
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else if (l_oException is UsernamePasswordInvalidException)
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{
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// Cookie is empty.
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Log.ForContext<LoginPageViewModel>().Error("Login failed (empty cookie). {@l_oException}.", l_oException);
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await m_oViewService.DisplayAlert(
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AppResources.ErrorLoginTitle,
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string.Format(AppResources.ErrorLoginNoCookie, l_oException.Message),
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AppResources.MessageAnswerOk);
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}
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else
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{
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Log.ForContext<LoginPageViewModel>().Error("Login failed. {@l_oException}.", l_oException);
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await m_oViewService.DisplayAlert(
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AppResources.ErrorLoginTitle,
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l_oException.Message,
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AppResources.MessageAnswerOk);
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}
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IsIdle = true;
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StatusInfoText = string.Empty;
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return;
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}
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// Display information that login succeeded.
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Log.ForContext<LoginPageViewModel>().Information("Login succeeded. {@shareeBikeApp.ActiveUser}.", ShareeBikeApp.ActiveUser);
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var title = ShareeBikeApp.ActiveUser.Group.Intersect(new List<string> { Model.Connector.FilterHelper.CARGOBIKE, Model.Connector.FilterHelper.CITYBIKE }).Any()
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? string.Format(AppResources.MessageLoginWelcomeTitleGroup, ShareeBikeApp.ActiveUser.GetUserGroupDisplayName())
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: string.Format(AppResources.MessageLoginWelcomeTitle);
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await m_oViewService.DisplayAlert(
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title,
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string.Format(AppResources.MessageLoginWelcome, ShareeBikeApp.ActiveUser.Mail),
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AppResources.MessageAnswerOk);
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//clear MailAdress and Password user input
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MailAddress = string.Empty;
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Password = string.Empty;
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}
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catch (Exception p_oException)
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{
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Log.ForContext<LoginPageViewModel>().Error("An unexpected error occurred displaying log out page. {@Exception}", p_oException);
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IsIdle = true;
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StatusInfoText = string.Empty;
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return;
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}
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IsIdle = true;
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StatusInfoText = string.Empty;
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}
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}
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/// <summary> Holds whether ShareeBike/ Copri info is shown.</summary>
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public bool IsRegisterTargetsInfoVisible { get; private set; }
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/// <summary> Opens login page.</summary>
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public void RegisterRequest(string url)
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{
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try
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{
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OpenUrlInExternalBrowser(url);
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}
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catch (Exception p_oException)
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{
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Log.Error("Ein unerwarteter Fehler ist auf der Login Seite beim Öffnen eines Browsers, Seite {url}, aufgetreten. {@Exception}", url, p_oException);
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return;
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}
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}
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/// <summary>
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/// Invoked when page is shutdown.
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/// Currently invoked by code behind, would be nice if called by XAML in future versions.
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/// </summary>
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public async Task OnDisappearing()
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{
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try
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{
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Log.ForContext<LoginPageViewModel>().Information($"Entering {nameof(OnDisappearing)}...");
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}
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catch (Exception l_oException)
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{
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await m_oViewService.DisplayAlert(
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AppResources.ErrorPageNotLoadedTitle,
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$"{AppResources.ErrorPageNotLoaded}\r\n{l_oException.Message}",
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AppResources.MessageAnswerOk);
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}
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}
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}
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}
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