using System.Linq;
using Godot;

namespace BITKit;

public partial class UXMetaElement : Node3D, IMetaDisplayElement
{
    [Export] private bool isEnabled=true;
    [Export] private Node3D proxy;
    [Export] protected string[] MetaEntries;
    private bool _registered;

    string IMetaDisplayElement.Text
    {
        get
        {
            var node = proxy ?? this;
            return string.Join(MetaEntries?.Length>2 ? "\n" : ":", MetaEntries!
                .Where(x => string.IsNullOrEmpty(x) is false)
                .Where(x => node.HasMeta(x))
                .Select(x => node.GetMeta(x).AsString())
                .InsertOf<string>(0, node.Name)
            );
        }
    }

    Vector3 IMetaDisplayElement.Position => (proxy ?? this).GlobalPosition;
    // public override void _Ready()
    // {
    //     if (!isEnabled) return;
    //     UXMetaService.Register(this);
    //     _registered = true;
    // }
    public override void _Process(double delta)
    {
        if (_registered == isEnabled) return;
        if (isEnabled)
        {
            UXMetaService.Register(this);
        }
        else
        {
            UXMetaService.UnRegister(this);
        }
        _registered = isEnabled;
    }

    protected override void Dispose(bool disposing)
    {
        if (isEnabled && _registered)
            UXMetaService.UnRegister(this);
    }
}