using System;
using System.Collections.Generic;
using System.Linq;
using PsdParser.AdditionalLayerInformations;
using YukkuriMovieMaker.Plugin.FileSource.Psd;

namespace YukkuriMovieMaker.Plugin.Tachie.Psd;

public class PsdFolderViewModel : PsdItemViewModel<PsdFolder>
{
	public bool IsOpened { get; set; }

	public IReadOnlyCollection<IPsdItemViewModel<PsdItem>> Items { get; }

	public PsdFolderViewModel(PsdFolder psdFolder, PsdFileSettings settings, ShiftLayerCommand shiftLayerCommand, SwitchLayerCommand switchLayerCommand)
		: base(psdFolder, shiftLayerCommand, switchLayerCommand)
	{
		IsOpened = psdFolder.LayerRecordAndImage?.Record.AdditionalLayerInformations.OfType<SectionDividerSetting>().Any((SectionDividerSetting x) => x.Type == SectionDividerSetting.LsctType.OpenedFolder) ?? true;
		ShiftLayerCommand childShiftLayerCommand = new ShiftLayerCommand();
		SwitchLayerCommand childSwitchLayerCommand = new SwitchLayerCommand();
		List<IPsdItemViewModel<PsdItem>> items = (List<IPsdItemViewModel<PsdItem>>)(Items = ((IEnumerable<PsdItem>)psdFolder.Items).Select((Func<PsdItem, IPsdItemViewModel<PsdItem>>)delegate(PsdItem item)
		{
			if (!(item is PsdFolder psdFolder2))
			{
				if (!(item is PsdLayer psdLayer))
				{
					throw new Exception();
				}
				return new PsdLayerViewModel(psdLayer, settings, childShiftLayerCommand, childSwitchLayerCommand);
			}
			return new PsdFolderViewModel(psdFolder2, settings, childShiftLayerCommand, childSwitchLayerCommand);
		}).ToList());
		childShiftLayerCommand.Items = items;
		childSwitchLayerCommand.Items = items;
	}

	public override void UpdateEnable(IEnumerable<string> enableLayers)
	{
		base.UpdateEnable(enableLayers);
		foreach (IPsdItemViewModel<PsdItem> item in Items)
		{
			item.UpdateEnable(enableLayers);
		}
	}

	internal IEnumerable<string> GetEnableItems()
	{
		foreach (IPsdItemViewModel<PsdItem> item in Items)
		{
			if (item.IsEnabled)
			{
				yield return item.Id;
			}
			if (!(item is PsdFolderViewModel psdFolderViewModel))
			{
				continue;
			}
			foreach (string enableItem in psdFolderViewModel.GetEnableItems())
			{
				yield return enableItem;
			}
		}
	}

	internal IEnumerable<(string Id, string Path)> GetEnableItemsWithPath()
	{
		foreach (IPsdItemViewModel<PsdItem> item in Items)
		{
			if (item.IsEnabled)
			{
				yield return (Id: item.Id, Path: item.Path);
			}
			if (!(item is PsdFolderViewModel psdFolderViewModel))
			{
				continue;
			}
			foreach (var item2 in psdFolderViewModel.GetEnableItemsWithPath())
			{
				yield return item2;
			}
		}
	}
}