using System.Collections.Generic;
using System.Linq;
using UIWidgets;
using UnityEngine;

namespace UIWidgetsSamples
{
	[RequireComponent(typeof(ListViewBase))]
	public class ListViewSaveIndicies : MonoBehaviour
	{
		[SerializeField]
		public string Key = "Unique Key";

		[SerializeField]
		private ListViewBase list;

		private void Start()
		{
			list = GetComponent<ListViewBase>();
			list.Start();
			LoadIndicies();
			list.OnSelect.AddListener(SaveIndicies);
			list.OnDeselect.AddListener(SaveIndicies);
		}

		private void LoadIndicies()
		{
			if (PlayerPrefs.HasKey(Key))
			{
				List<int> list = String2Indicies(PlayerPrefs.GetString(Key));
				list.RemoveAll((int x) => !this.list.IsValid(x));
				this.list.SelectedIndicies = list;
			}
		}

		private void SaveIndicies(int index, ListViewItem component)
		{
			PlayerPrefs.SetString(Key, Indicies2String(list.SelectedIndicies));
		}

		private List<int> String2Indicies(string str)
		{
			if (str == string.Empty)
			{
				return new List<int>();
			}
			return str.Split(',').Select(int.Parse).ToList();
		}

		private string Indicies2String(List<int> indicies)
		{
			if (indicies == null || indicies.Count == 0)
			{
				return string.Empty;
			}
			return string.Join(",", indicies.Select((int x) => x.ToString()).ToArray());
		}
	}
}