public IList <string> GetGroupDetails(string name, string phoneNumber)
{
var key_exists = _groupsRepository.GetGroupKey(phoneNumber, name);
if (key_exists == null)
{
throw new NullReferenceException("This group does not exist!");
}
var group_members = _groupsRepository.GetGroupMembers(key_exists);
IList <string> details = new List <string>();
string nume = "Name: " + name;
details.Add(nume);
string admin = "Admin: " + _userRepository.GetUserByPhoneNumber(phoneNumber).FirstName + " " + _userRepository.GetUserByPhoneNumber(phoneNumber).LastName;
details.Add(admin);
string number = "No of members: " + group_members.Count.ToString();
details.Add(number);
return(details);
}