namespace KOTH;

/// <summary>
/// A utility component that lets you have tags update based on conditions,
/// similarly to how we have Panel.BindClass
/// </summary>
public partial class TagBinder : Component
{
	/// <summary>
	/// A cache of binds.
	/// </summary>
	private Dictionary<string, Func<bool>> binds = new();

	protected override void OnUpdate()
	{
		if (IsProxy) return;

		foreach (var kv in binds)
		{
			GameObject.Tags.Set(kv.Key, kv.Value());
		}
	}

	/// <summary>
	/// Do we have a bind already?
	/// </summary>
	/// <param name="tag"></param>
	/// <returns></returns>
	private bool HasExistingBind(string tag)
	{
		return binds.ContainsKey(tag);
	}

	/// <summary>
	/// Bind a tag to a specific condition. Must not exist.
	/// </summary>
	/// <param name="tag"></param>
	/// <param name="predicate"></param>
	/// <returns></returns>
	public bool BindTag(string tag, Func<bool> predicate)
	{
		if (HasExistingBind(tag))
		{
			return false;
		}

		binds.Add(tag, predicate);

		return true;
	}
}