using AICore.Context.Entry;
using System.Collections.Generic;
using System.Linq;

namespace AICore.Context.EntryMapper
{
	internal abstract class BaseContextEntryMapper<TObject, TContext>
		where TObject : class, new() where TContext : BaseContextEntry, new()
	{
		public virtual TContext MapToNewContext(TObject pObject)
		{
			var context = CreateNewContext();

			MergeWithObject(pObject, context);

			return context;
		}

		public virtual TContext CreateNewContext()
		{
			return new TContext();
		}

		public virtual IEnumerable<TContext> MapToNewContexts(IEnumerable<TObject> pObjects)
		{
			if (pObjects is null || !pObjects.Any())
				return Enumerable.Empty<TContext>();

			return pObjects.Select(MapToNewContext);
		}

		public abstract void MergeWithObject(TObject pDataContract, TContext pContext);
	}
}