IDEDialogViewModel.cs « Tango.Scripting.IDE « Tango.Scripting « TEMP « Visual_Studio « Software - Tango - Twine softwares

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.SharedUI;

namespace Tango.Scripting.IDE
{
    public class IDEDialogViewModel : DialogViewVM
    {
        public String Title { get; set; }
    }
}

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using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.BL;
using Tango.BL.Enumerations;
using Tango.Core.Commands;
using Tango.Core.Cryptography;
using Tango.Core.DI;
using Tango.MachineStudio.Common;
using Tango.MachineStudio.Common.Authentication;
using Tango.MachineStudio.Common.EventLogging;
using Tango.MachineStudio.Common.Navigation;
using Tango.MachineStudio.Common.Notifications;
using Tango.MachineStudio.UI.Messages;
using Tango.Settings;
using Tango.SharedUI;
using Tango.Web;

namespace Tango.MachineStudio.UI.ViewModels
{
    /// <summary>
    /// Represents the Machine Studio login view, view model.
    /// </summary>
    /// <seealso cref="Tango.SharedUI.ViewModel" />
    public class LoginViewVM : ViewModel
    {
        private IAuthenticationProvider _authenticationProvider;
        private INavigationManager _navigationManager;
        private INotificationProvider _notificationProvider;
        private IEventLogger _eventLogger;
        private Rfc2898Cryptographer cryptographer;
        private MachineStudioSettings _settings;

        private String _email;
        /// <summary>
        /// Gets or sets the email.
        /// </summary>
        [Required(ErrorMessage = "Email is required")]
        [EmailAddress(ErrorMessage = "Please enter a valid email")]
        public String Email
        {
            get { return _email; }
            set { _email = value; RaisePropertyChangedAuto(); }
        }

        private String _password;
        /// <summary>
        /// Gets or sets the password.
        /// </summary>
        [Required(ErrorMessage = "Password is required")]
        public String Password
        {
            get { return _password; }
            set { _password = value; RaisePropertyChangedAuto(); }
        }

        private DeploymentSlot _deploymentSlot;
        /// <summary>
        /// Gets or sets the deployment slot.
        /// </summary>
        public DeploymentSlot DeploymentSlot
        {
            get { return _deploymentSlot; }
            set { _deploymentSlot = value; RaisePropertyChangedAuto(); }
        }

        private bool _isLogging;
        /// <summary>
        /// Gets or sets a value indicating whether this instance is logging.
        /// </summary>
        public bool IsLogging
        {
            get { return _isLogging; }
            set { _isLogging = value; RaisePropertyChangedAuto(); }
        }

        private bool _rememberMe;
        /// <summary>
        /// Gets or sets a value indicating whether to remember the last user email and password.
        /// </summary>
        public bool RememberMe
        {
            get { return _rememberMe; }
            set { _rememberMe = value; RaisePropertyChangedAuto(); }
        }

        private bool _enableSlotSelection;
        /// <summary>
        /// Gets or sets a value indicating whether to enable the deployment slot selection.
        /// </summary>
        public bool EnableSlotSelection
        {
            get { return _enableSlotSelection; }
            set { _enableSlotSelection = value; RaisePropertyChangedAuto(); }
        }


        /// <summary>
        /// Gets or sets the login command.
        /// </summary>
        public RelayCommand LoginCommand { get; set; }

        /// <summary>
        /// Initializes a new instance of the <see cref="LoginViewVM"/> class.
        /// </summary>
        /// <param name="authenticationProvider">The authentication provider.</param>
        /// <param name="navigationManager">The navigation manager.</param>
        /// <param name="notificationProvider">The notification provider.</param>
        public LoginViewVM(IAuthenticationProvider authenticationProvider, INavigationManager navigationManager, INotificationProvider notificationProvider, IEventLogger eventLogger)
        {
            EnableSlotSelection = true;

            _settings = SettingsManager.Default.GetOrCreate<MachineStudioSettings>();

            _notificationProvider = notificationProvider;
            _navigationManager = navigationManager;
            _authenticationProvider = authenticationProvider;
            _eventLogger = eventLogger;
            LoginCommand = new RelayCommand(Login, () => !IsLogging);

            cryptographer = new Rfc2898Cryptographer();
            Email = _settings.LastLoginEmail;
            DeploymentSlot = _settings.DeploymentSlot;
            RememberMe = _settings.RememberMe;

            try
            {
                Password = cryptographer.Decrypt(_settings.LastLoginPassword);
            }
            catch (Exception ex)
            {
                LogManager.Log(ex);
            }
        }

        /// <summary>
        /// Logins the requested user.
        /// </summary>
        private async void Login()
        {
            if (Validate())
            {
                try
                {
                    IsLogging = true;
                    InvalidateRelayCommands();

                    await Task.Factory.StartNew(() =>
                    {
                        _settings.DeploymentSlot = DeploymentSlot;

                        var result = _authenticationProvider.Login(Email, Password).Response;

                        if (result.VersionChangeRequired && !_settings.ByPassEnvironmentVersionCheck)
                        {
                            InvokeUI(() =>
                            {
                                if (_notificationProvider.ShowErrorQuestion($"Your version of Machine Studio is different from the version specified for the selected environment.\nMachine Studio must be changed to version '{result.RequiredVersion}' in order to continue.\nDo you wish to update your local version?"))
                                {
                                    TangoMessenger.Default.Send(new ChangeVersionMessage()
                                    {
                                        LoginResponse = result,
                                    });
                                    _navigationManager.NavigateTo(NavigationView.UpdateView);
                                }
                            });

                            return;
                        }

                        _eventLogger.Log(EventTypes.APPLICATION_STARTED, "Application Started!");

                        _navigationManager.NavigateTo(NavigationView.MainView);

                        _settings.LastLoginEmail = Email;
                        _settings.RememberMe = RememberMe;
                        _settings.LastLoginPassword = RememberMe ? cryptographer.Encrypt(Password) : null;
                        _settings.Save();

                        _eventLogger.Log("User logged in.");

                        EnableSlotSelection = false;
                    });
                }
                catch (Exception ex)
                {
                    LogManager.Log(ex, "Login Error.");
                    _notificationProvider.ShowError($"The specified email or password was incorrect, or you don't have a permission to run this application.\nError: {ex.FlattenMessage()}");
                }
                finally
                {
                    IsLogging = false;
                    InvalidateRelayCommands();
                }
            }
        }
    }
}