using System;
using Godot;

namespace GodotHostTest.AetherBind;

public static class SceneInstantiatorExtensions
{
    /// <summary>
    ///     Instantiate a packed scene, just like <see cref="PackedScene.Instantiate{T}" />, but also looks for a scope between
    ///     the top level children and triggers the dependency injection mechanism when found.
    /// </summary>
    /// <param name="sceneInstantiator">The scene instantiator to use.</param>
    /// <param name="packedScene">The packed scene to instantiate.</param>
    /// <param name="onScopeCreated">
    ///     An optional callback invoked once the scope has been created, but before instantiating the
    ///     scene.
    /// </param>
    /// <returns>The created node, with its dependencies satisfied.</returns>
    private static T Instantiate<T>(this ISceneInstantiator sceneInstantiator, PackedScene packedScene,
        Delegate? onScopeCreated = null) where T : Node
    {
        return (T)sceneInstantiator.Instantiate(packedScene, onScopeCreated);
    }
}