using System;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using BS.Shared;
using BS.Shared.Core;
using BS.Shared.DataContracts;

namespace BeWo.ViewModel
{
	public class ImageVM : AbstractDCMapperVM<ImageDC>
	{
		private string _Filename;
		private string _Fullname;
		private byte[] _Original;
		private byte[] _MediumThumbnail;
		private byte[] _SmallThumbnail;

		public ImageVM() : this(new ImageDC())
		{

		}
		public ImageVM(ImageDC dc) : base(dc, dc.Oid == null)
		{

		}

		public string Filename
		{
			get { return _Filename; }
			set
			{
				if (!AreDifferent(_Filename, value))
					return;

				_Filename = value;
				StoreDirtyInformation(AreDifferent(DataContract.Filename, value), nameof(Filename));
				FirePropertyChanged(nameof(Filename));
			}
		}
		public string Fullname
		{
			get { return _Fullname; }
			set
			{
				if (!AreDifferent(_Fullname, value))
					return;

				_Fullname = value;
				StoreDirtyInformation(AreDifferent(DataContract.Fullname, value), nameof(Fullname));
				FirePropertyChanged(nameof(Fullname));
			}
		}
		public byte[] Original
		{
			get { return _Original; }
			set
			{
				if (!AreDifferent<byte>(_Original, value))
					return;

				_Original = value;
				StoreDirtyInformation(AreDifferent<byte>(DataContract.Original, value), nameof(Original));
				FirePropertyChanged(nameof(Original));
				FirePropertyChanged(nameof(BitmapImage));
			}
		}

		public BitmapImage BitmapImage => Utils.CreateBitmapImageFromByteArray(Original);

		protected override void InitByDataContract(ImageDC pDataContract)
		{
			_Filename = pDataContract.Filename;
			_Fullname = pDataContract.Fullname;
			_Original = pDataContract.Original;
			_MediumThumbnail = pDataContract.MediumThumbnail;
			_SmallThumbnail = pDataContract.SmallThumbnail;
		}

		protected override ImageDC MapToDataContract(ImageDC pDataContract, bool doCommit)
		{
			pDataContract.Filename = _Filename;
			pDataContract.Fullname = _Fullname;
			pDataContract.Original = _Original;

			return pDataContract;
		}
	}
}