using MyMediaCollection.Enums; using MyMediaCollection.Model; using System.Collections.Generic; namespace MyMediaCollection.Interfaces { public interface IDataService { IList GetItems(); MediaItem GetItem(int id); int AddItem(MediaItem item); void UpdateItem(MediaItem item); IList GetItemTypes(); Medium GetMedium(string name); IList GetMediums(); IList GetMediums(ItemType itemType); IList GetLocationTypes(); } }