using Godot;

[Tool]
public partial class CsvResourceImporter : EditorPlugin
{
	private const string MenuName = "Import CSV Resources...";
	private EditorFileDialog _configDialog;

	public override void _EnterTree()
	{
		AddToolMenuItem(MenuName, Callable.From(OnImportMenu));

		_configDialog = new EditorFileDialog
		{
			Access = EditorFileDialog.AccessEnum.Resources,
			FileMode = EditorFileDialog.FileModeEnum.OpenFile,
			Title = "Select CsvImportConfig"
		};
		_configDialog.AddFilter("*.tres,*.res ; Csv Import Config");
		_configDialog.FileSelected += OnConfigSelected;
		EditorInterface.Singleton.GetBaseControl().AddChild(_configDialog);
	}

	public override void _ExitTree()
	{
		RemoveToolMenuItem(MenuName);
		if (_configDialog != null && IsInstanceValid(_configDialog))
		{
			_configDialog.FileSelected -= OnConfigSelected;
			_configDialog.QueueFree();
		}
	}

	private void OnImportMenu()
	{
		if (_configDialog == null)
		{
			return;
		}

		_configDialog.PopupCentered(new Vector2I(900, 600));
	}

	private void OnConfigSelected(string path)
	{
		var config = ResourceLoader.Load<CsvImportConfig>(path);
		if (config == null)
		{
			GD.PushError($"CSV importer: failed to load config: {path}");
			return;
		}

		var result = CsvImporter.Import(config);
		if (result.ErrorCount > 0)
		{
			GD.PushWarning($"CSV importer: completed with {result.ErrorCount} errors, {result.CreatedCount} created, {result.SkippedCount} skipped.");
			foreach (var error in result.Errors)
			{
				GD.PushWarning(error);
			}
		}
		else
		{
			GD.Print($"CSV importer: created {result.CreatedCount} resources, skipped {result.SkippedCount}.");
		}

		var fileSystem = EditorInterface.Singleton.GetResourceFilesystem();
		fileSystem?.Scan();
	}
}