public bool AuthCheckTokenExpiration()
{
string expStr = AuthenticationHelper.GetExpirationUTC();
if (expStr != null)
{
DateTime expDate;
if (DateTime.TryParse(expStr, out expDate))
{
if (expDate > DateTime.UtcNow.AddMinutes(MINUTES_REMAINING_FOR_TRIGGER_REFRESH_TOKEN))
{
//token is fine now and valid for more than the next ___ minutes, it doesn't need a refresh
return(true);
}
else
{
//token is expired or will expire in the next ____ minutes, needs a refresh
return(false);
}
}
else
{
//can't parse expiration date, just clear and refresh everything and log it
Analytics.TrackEvent($"Can't parse this token expiration date: {expStr}");
AuthenticationHelper.ClearSecureStorageAuthValues();
return(false);
}
}
else
{
return(false);
}
}
public async Task <bool> AuthGetToken(string user, string pass)
{
try
{
var content = new FormUrlEncodedContent(new[]
{
new KeyValuePair <string, string>("grant_type", "password"),
new KeyValuePair <string, string>("username", user),
new KeyValuePair <string, string>("password", pass)
});
var client = GetHttpClient(Consts.UNAUTHORIZED);
var result = await client.PostAsync("token", content);
if (result.IsSuccessStatusCode)
{
var resultContent = JsonConvert.DeserializeObject <AuthenticationResult>(await result.Content.ReadAsStringAsync());
AuthenticationHelper.SetTokens(resultContent.access_token, resultContent.refresh_token, DateTime.UtcNow.AddSeconds((double)resultContent.expires_in).ToString());
Preferences.Set(Consts.CURRENT_ASP_USER_ID, resultContent.userId);
Preferences.Set(Consts.CURRENT_USER_EMAIL, resultContent.userName);
Preferences.Set(Consts.CURRENT_USER_PROFILE_ID, resultContent.userProfileId);
Analytics.TrackEvent("Successful Login", new Dictionary <string, string> {
{ "user", user }
});
return(true);
}
else
{
AuthenticationHelper.ClearSecureStorageAuthValues();
Preferences.Set(Consts.CURRENT_ASP_USER_ID, string.Empty);
Preferences.Remove(Consts.CURRENT_USER_EMAIL);
Preferences.Set(Consts.CURRENT_USER_PROFILE_ID, 0);
Analytics.TrackEvent("Unsuccessful Login", new Dictionary <string, string> {
{ "user", user }
});
return(false);
}
}
catch (Exception ex)
{
Debug.WriteLine(@"ERROR {0}", ex.Message);
Crashes.TrackError(ex);
return(false);
}
}
public void AuthRemoveToken()
{
try
{
AuthenticationHelper.ClearSecureStorageAuthValues();
Preferences.Set(Consts.CURRENT_ASP_USER_ID, string.Empty);
Preferences.Remove(Consts.CURRENT_USER_EMAIL);
Preferences.Set(Consts.CURRENT_USER_PROFILE_ID, 0);
Analytics.TrackEvent("Successfully Logged Out");
}
catch (Exception ex)
{
Debug.WriteLine(@"ERROR {0}", ex.Message);
Crashes.TrackError(ex);
}
}
