using Editor;
using Sandbox;
using System;
using System.Linq;

namespace SpriteTools.TilesetEditor;

[CustomEditor( typeof( AutotileBrush.TileReference ) )]
public class AutotileTileReferenceControl : ControlWidget
{
	public override bool SupportsMultiEdit => false;

	internal static Guid DragId = Guid.Empty;

	public AutotileTileReferenceControl ( SerializedProperty property ) : base( property )
	{
		if ( !property.IsEditable )
			ReadOnly = true;

		SetSizeMode( SizeMode.Default, SizeMode.Default );

		Layout = Layout.Column();
		Layout.Spacing = 2;

		Cursor = CursorShape.Finger;
		AcceptDrops = true;
	}

	protected override void OnContextMenu ( ContextMenuEvent e )
	{
		var m = new ContextMenu( this );

		if ( !ReadOnly )
		{
			m.AddOption( "Clear", "backspace", action: Clear );
		}

		if ( m.OptionCount > 0 )
		{
			m.OpenAtCursor( false );
		}

		e.Accepted = true;
	}

	protected override void PaintControl ()
	{
		var rect = LocalRect.Shrink( 6, 0 );
		var tile = SerializedProperty.GetValue<AutotileBrush.TileReference>();
		if ( ( tile?.Id ?? System.Guid.Empty ) == System.Guid.Empty )
		{
			Paint.SetPen( Theme.TextControl.WithAlpha( 0.3f ) );
			Paint.DrawIcon( rect, "grid_3x3", 14, TextFlag.LeftCenter );
			rect.Left += 22;
			Paint.DrawText( rect, "None", TextFlag.LeftCenter );
		}
		else
		{
			Paint.SetPen( Theme.Green );
			Paint.DrawIcon( rect, "grid_on", 14, TextFlag.LeftCenter );
			rect.Left += 22;
			var realTile = tile?.Tileset?.Tiles.FirstOrDefault( t => t.Id == tile.Id );
			Paint.DrawText( rect, string.IsNullOrEmpty( realTile?.Name ) ? $"Tile {realTile?.Position ?? Vector2Int.Zero}" : realTile.Name, TextFlag.LeftCenter );
		}
	}

	private string BuildName ( GameObject go )
	{
		string str = "";

		if ( go.Parent.IsValid() && go.Parent is not Scene )
		{
			str += $"{BuildName( go.Parent )} > ";
		}

		str += $"{go.Name}";

		return str;
	}

	// protected override void OnMouseClick(MouseEvent e)
	// {
	//     if (e.LeftMouseButton)
	//     {
	//         e.Accepted = true;
	//         var go = SerializedProperty.GetValue<GameObject>();
	//         if (go.IsValid() && go is not PrefabScene)
	//         {
	//             SceneEditorSession.Active?.Selection.Set(go);
	//             SceneEditorSession.Active.FullUndoSnapshot($"Selected {go}");
	//         }
	//         else
	//         {
	//             if (ReadOnly) return;

	//             var resource = (go as PrefabScene)?.Source ?? null;
	//             var asset = resource != null ? AssetSystem.FindByPath(resource.ResourcePath) : null;

	//             var prefabAssetType = AssetType.Find("prefab", false);
	//             var picker = new AssetPicker(this, new List<AssetType> { prefabAssetType });
	//             picker.MultiSelect = IsInList;
	//             picker.Window.Title = $"Select Prefab";
	//             picker.OnAssetHighlighted = (o) => UpdateFromAsset(o.FirstOrDefault());
	//             picker.OnAssetPicked = (o) => UpdateFromAssets(o);
	//             picker.Window.Show();

	//             picker.SetSelection(asset);
	//         }
	//     }
	// }

	void Clear ()
	{
		SerializedProperty.SetValue<GameObject>( null );
		SignalValuesChanged();
	}
}