private bool FindMissingUsersInDatabase(out List <UserPrincipal> _UsersToBePut, List <UserPrincipal> _Users, Action <string> _ErrorMessageAction)
{
_UsersToBePut = null;
var TmpDictionary = new Dictionary <string, UserPrincipal>();
foreach (var AzureUser in _Users)
{
TmpDictionary.Add(AzureUser.Email + Controller_SSOAccessToken.EMAIL_USER_NAME_POSTFIX, AzureUser);
}
if (!DatabaseService.ScanTable(
UniqueUserFieldsDBEntry.DBSERVICE_UNIQUEUSERFIELDS_TABLE(),
out List <JObject> Result,
_ErrorMessageAction))
{
_ErrorMessageAction?.Invoke("Scan unique-users-fields operation has failed.");
return(false);
}
foreach (var Existing in Result)
{
if (Existing.TryGetValue(UniqueUserFieldsDBEntry.KEY_NAME_USER_EMAIL, out JToken ExistingEmailToken) &&
ExistingEmailToken.Type == JTokenType.String)
{
TmpDictionary.Remove((string)ExistingEmailToken); //TryRemove
}
}
_UsersToBePut = TmpDictionary.Values.ToList();
return(true);
}