using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;

using Syntriax.Engine.Core.Abstract;

namespace Syntriax.Engine.Core;

public static class UniverseObjectExtensions
{
    public static T SetUniverseObject<T>(this T universeObject, string? name = "", IUniverseObject? parent = null) where T : IUniverseObject
    {
        if (!string.IsNullOrWhiteSpace(name))
            universeObject.Name = name;
        if (parent is not null)
            universeObject.SetParent(parent);
        return universeObject;
    }

    public static T? GetUniverseObject<T>(this IEnumerable<IUniverseObject> universeObjects) where T : class
    {
        foreach (IUniverseObject universeObject in universeObjects)
            if (universeObject is T @object)
                return @object;

        return default;
    }

    public static bool TryGetUniverseObject<T>(this IEnumerable<IUniverseObject> universeObjects, [NotNullWhen(returnValue: true)] out T? behaviour) where T : class
    {
        behaviour = GetUniverseObject<T>(universeObjects);
        return behaviour is not null;
    }

    public static void GetUniverseObjects<T>(this IEnumerable<IUniverseObject> universeObjects, List<T> behaviours) where T : class
    {
        behaviours.Clear();
        foreach (IUniverseObject universeObject in universeObjects)
            if (universeObject is T @object)
                behaviours.Add(@object);
    }
}