using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using BS.Shared.DataContracts.Feature.AI;
using BS.Shared.Extensions;

namespace BeWo.ViewModel.ListViewModel
{
	public class AiPromptbausteinRoutineStepListVM : AbstractDCListMapperVM<AiPromptbausteinRoutineStepDC, AiPromptbausteinRoutineStepVM>
	{
		public AiPromptbausteinRoutineStepListVM(IEnumerable<AiPromptbausteinRoutineStepDC> pDataContracts = null) : base(pDataContracts)
		{

		}

		public override void UpdateByDataContracts(List<AiPromptbausteinRoutineStepDC> pDataContracts)
		{
			var count_a = Count;
			var count_b = pDataContracts.Count;

			// 1-k updaten
			var count_toupdate = Math.Min(count_a, count_b);
			for ( var i = 0; i < count_toupdate; i++)
			{
				var a = VMList[i];
				var b = pDataContracts[i];

				a.UpdateByDataContract(b);
			}

			if (count_a == count_b)
				return;

			if(count_a > count_b)
			{
				for (var i = count_a - 1; i > count_toupdate - 1; i--)
				{
					VMList.RemoveAt(i);
				}
			}
			else
			{
				for (int i = count_toupdate; i < count_b; i++)
				{
					var dc = pDataContracts[i];
					var vm = new AiPromptbausteinRoutineStepVM(dc);
					VMList.Add(vm);
				}
			}

			FirePropertyChanged(nameof(Count));
		}
	}
}