public async Task VerifyTokenAsync()
{
StoreSettings settings = await ReadSettingsAsync();
if (settings != null)
{
try
{
if (!string.IsNullOrEmpty(settings.AuthToken) && JwtUtility.GetTokenExpiration(settings.AuthToken) < DateTime.UtcNow)
{
if (CrossConnectivity.Current.IsConnected)
{
var result = await RegenerateTokenAsync();
if (!result)
{
//no token regenerated
await LogoutAsync();
}
}
}
}
catch (InvalidTokenException)
{
//Token exception error
if (CrossConnectivity.Current.IsConnected)
{
await LogoutAsync();
}
}
}
}
async Task LoadCachedTokenAsync()
{
StoreSettings settings = await ReadSettingsAsync();
if (settings != null)
{
try
{
if (!string.IsNullOrEmpty(settings.AuthToken) && JwtUtility.GetTokenExpiration(settings.AuthToken) > DateTime.UtcNow)
{
MobileService.CurrentUser = new MobileServiceUser(settings.UserId);
MobileService.CurrentUser.MobileServiceAuthenticationToken = settings.AuthToken;
}
}
catch (InvalidTokenException)
{
settings.AuthToken = string.Empty;
settings.UserId = string.Empty;
await SaveSettingsAsync(settings);
}
}
}