public SignInFlyoutViewModel(IAccountService accountService, IAlertMessageService alertMessageService, IResourceLoader resourceLoader)
{
_accountService = accountService;
_alertMessageService = alertMessageService;
_resourceLoader = resourceLoader;
if (accountService != null)
{
_lastSignedInUser = _accountService.SignedInUser;
}
SignInCommand = DelegateCommand.FromAsyncHandler(SignInAsync, CanSignIn);
}
public SignOutFlyoutViewModel(IAccountService accountService, INavigationService navigationService)
{
_accountService = accountService;
_navigationService = navigationService;
if (_accountService != null)
{
_userInfo = _accountService.SignedInUser;
}
if (_userInfo != null)
{
UserName = _userInfo.UserName;
}
SignOutCommand = new DelegateCommand(SignOut, CanSignOut);
}
public AccountService(IIdentityService identityService, ISessionStateService sessionStateService, ICredentialStore credentialStore)
{
_identityService = identityService;
_sessionStateService = sessionStateService;
_credentialStore = credentialStore;
if (_sessionStateService != null)
{
if (_sessionStateService.SessionState.ContainsKey(SignedInUserKey))
{
_signedInUser = _sessionStateService.SessionState[SignedInUserKey] as UserInfo;
}
if (_sessionStateService.SessionState.ContainsKey(UserNameKey))
{
_userName = _sessionStateService.SessionState[UserNameKey].ToString();
}
if (_sessionStateService.SessionState.ContainsKey(PasswordKey))
{
_password = _sessionStateService.SessionState[PasswordKey].ToString();
}
}
}
public void RaiseUserChanged(UserInfo newUserInfo, UserInfo oldUserInfo)
{
UserChanged(this, new UserChangedEventArgs(newUserInfo, oldUserInfo));
}
public UserChangedEventArgs(UserInfo newUserInfo, UserInfo oldUserInfo)
{
NewUserInfo = newUserInfo;
OldUserInfo = oldUserInfo;
}
private void RaiseUserChanged(UserInfo newUserInfo, UserInfo oldUserInfo)
{
var handler = UserChanged;
if (handler != null)
{
handler(this, new UserChangedEventArgs(newUserInfo, oldUserInfo));
}
}
public void SignOut()
{
var previousUser = _signedInUser;
_signedInUser = null;
_userName = null;
_password = null;
_sessionStateService.SessionState.Remove(SignedInUserKey);
_sessionStateService.SessionState.Remove(UserNameKey);
_sessionStateService.SessionState.Remove(PasswordKey);
// remove user from the CredentialStore, if any
_credentialStore.RemoveSavedCredentials(PasswordVaultResourceName);
RaiseUserChanged(_signedInUser, previousUser);
}
public async Task<bool> SignInUserAsync(string userName, string password, bool useCredentialStore)
{
try
{
var result = await _identityService.LogOnAsync(userName, password);
UserInfo previousUser = _signedInUser;
_signedInUser = result.UserInfo;
// Save SignedInUser in the StateService
_sessionStateService.SessionState[SignedInUserKey] = _signedInUser;
// Save username and password in state service
_userName = userName;
_password = password;
_sessionStateService.SessionState[UserNameKey] = userName;
_sessionStateService.SessionState[PasswordKey] = password;
if (useCredentialStore)
{
// Save credentials in the CredentialStore
_credentialStore.SaveCredentials(PasswordVaultResourceName, userName, password);
// Documentation on managing application data is at http://go.microsoft.com/fwlink/?LinkID=288818&clcid=0x409
}
if (previousUser == null)
{
// Raise use changed event if user logged in
RaiseUserChanged(_signedInUser, previousUser);
}
else if (_signedInUser != null && _signedInUser.UserName != previousUser.UserName)
{
// Raise use changed event if user changed
RaiseUserChanged(_signedInUser, previousUser);
}
return true;
}
catch (Exception)
{
}
return false;
}