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using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Authentication;
using System.Text;
using System.Threading.Tasks;
using Tango.BL;
using Tango.BL.Builders;
using Tango.BL.Entities;
using Tango.Core;
using Tango.Core.DI;
using Tango.FSE.Common;
using Tango.FSE.Common.Authentication;
using Tango.FSE.Common.FSEApplication;
using Tango.FSE.Common.Navigation;
using Tango.FSE.Common.Web;
using Tango.FSE.Web.Messages;
using Tango.MachineService.Gateway;
using Tango.Settings;
namespace Tango.FSE.UI.Authentication
{
/// <summary>
/// Represents the default FSE authentication provider.
/// </summary>
/// <seealso cref="Tango.Core.ExtendedObject" />
/// <seealso cref="Tango.FSE.Common.Authentication.IAuthenticationProvider" />
public class DefaultAuthenticationProvider : ExtendedObject, IAuthenticationProvider
{
private FSEWebClient _webClient;
[TangoInject(TangoInjectMode.WhenAvailable)]
private IFSEApplicationManager _appManager;
/// <summary>
/// Gets or sets the navigation manager.
/// </summary>
[TangoInject(TangoInjectMode.WhenAvailable)]
private INavigationManager _navigationManager;
/// <summary>
/// Occurs when the current logged-in user has changed.
/// </summary>
public event EventHandler<User> CurrentUserChanged;
private User _currentUser;
/// <summary>
/// Gets the current logged-in user.
/// </summary>
public User CurrentUser
{
get { return _currentUser; }
private set
{
_currentUser = value;
RaisePropertyChangedAuto();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="DefaultAuthenticationProvider"/> class.
/// </summary>
/// <param name="webClient">The web client.</param>
public DefaultAuthenticationProvider(FSEWebClient webClient)
{
_webClient = webClient;
}
/// <summary>
/// Logins the specified email.
/// </summary>
/// <param name="email">The email.</param>
/// <param name="password">The password.</param>
/// <param name="environment">The environment.</param>
/// <returns></returns>
public Task<AuthenticationResult> Login(String email, String password, EnvironmentConfiguration environment, Action<String> onStatusChanged = null)
{
return Task.Factory.StartNew<AuthenticationResult>(() =>
{
LogManager.Log($"Logging in user {email}...");
onStatusChanged?.Invoke($"Logging in user {email}...");
var settings = SettingsManager.Default.GetOrCreate<FSESettings>();
settings.MachineServiceAddress = environment.MachineServiceAddress;
if (_appManager.StartupArgs.Contains("-webDebug"))
{
_webClient.Address = "http://localhost:1111";
}
else
{
_webClient.Address = environment.MachineServiceAddress;
}
var appVersion = _appManager.Version.ToString();
if (settings.ForceVersionUpdate)
{
appVersion = "1.0.0.0";
}
LoginResponse response = null;
try
{
onStatusChanged?.Invoke($"Contacting machine service on '{_webClient.Address}'...");
response = _webClient.Login(new LoginRequest()
{
Email = email,
Password = password,
Version = appVersion,
}).Result;
settings.Save();
}
catch (Exception ex)
{
throw new AggregateException(new AuthenticationException("Error logging in to machine service."), ex);
}
if (settings.Environment == FSESettings.WorkingEnvironment.Remote)
{
ObservablesContext.OverrideSettingsDataSource(response.DataSource);
}
if (response.PasswordChangeRequired)
{
return new AuthenticationResult() { Response = response };
}
User user = null;
using (var db = ObservablesContext.CreateDefault())
{
user = new UserBuilder(db).Set(x => x.Email.ToLower() == email.ToLower())
.WithOrganization()
.WithRolesAndPermissions()
.Build();
}
if (user != null)
{
LogManager.Log($"Current user is now: {user.Contact.FullName}.");
}
else
{
throw new AuthenticationException("Login failed for some strange reason.");
}
onStatusChanged?.Invoke("Loading static collections...");
ObservablesStaticCollections.Instance.Initialize((msg) =>
{
onStatusChanged?.Invoke(msg);
});
CurrentUser = user;
settings.Save();
CurrentUserChanged?.Invoke(this, CurrentUser);
return new AuthenticationResult()
{
Response = response,
User = CurrentUser,
};
});
}
/// <summary>
/// Logs-out the current logged-in user.
/// </summary>
public void LogOut()
{
LogManager.Log("Logging out current user.");
CurrentUser = null;
CurrentUserChanged?.Invoke(this, CurrentUser);
_navigationManager.NavigateTo(NavigationView.LoginView);
}
}
}
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