namespace Shared
{
	public interface IGenericDataManager<T>
	{
		Task<int> GetNbItems();
		Task<IEnumerable<T>> GetItems(int index, int count, string? orderingPropertyName = null, bool descending = false);
		Task<T> UpdateItem(T oldItem, T newItem);
		Task<T> AddItem(T item);
		Task<bool> DeleteItem(T item);
	}
}