using System;
using System.IO;
using Comal.Classes;
using Xamarin.Forms;


namespace comal.timesheets
{
    public interface IDocumentShell
    {
        Guid EntityID { get; }
        Guid ID { get; }
        String FileName { get; }
        ImageSource Thumbnail { get; }
    }

    public class DeliveryItemDetailDeliveryDocumentShell : Shell<DeliveryItemDetailModel, DeliveryDocument>, IDocumentShell
    {
        static DeliveryItemDetailDeliveryDocumentShell()
        {
            Columns
                .Map(nameof(EntityID), x=>x.EntityLink.ID)
                .Map(nameof(ID), x => x.DocumentLink.ID)
                .Map(nameof(FileName), x => x.DocumentLink.FileName)
                .Map(nameof(_thumbnail), x=>x.Thumbnail);
        }

        public Guid EntityID => Get<Guid>();
        public Guid ID => Get<Guid>();
        public String FileName => Get<String>();
        private byte[] _thumbnail => Get<byte[]>();
        public ImageSource Thumbnail => ImageSource.FromStream(() => new MemoryStream(_thumbnail));

    }
}