using System;
using System.Collections.Generic;
using UnityEngine;

namespace DDD
{
    [Serializable]
    public class RestaurantPropLocation
    {
        public string Id;
        public Vector2 Position;

        public RestaurantPropLocation(string id, Vector2 position)
        {
            Id = id;
            Position = position;
        }
    }

    public class RestaurantEnvironmentState : ScriptableObject
    {
        public List<RestaurantPropLocation> Props = new List<RestaurantPropLocation>();
        public List<RestaurantPropLocation> Objects = new List<RestaurantPropLocation>();
        
        // 인터랙션 가능한 객체(IInteractable)를 관리하기 위한 리스트 (런타임 전용)
        private readonly List<IInteractable> _registeredInteractables = new List<IInteractable>();
        
        /// <summary>
        /// 인터랙션 가능한 객체를 등록합니다
        /// </summary>
        public void RegisterInteractable(IInteractable interactable)
        {
            if (interactable == null) return;
            if (_registeredInteractables.Contains(interactable)) return;
            _registeredInteractables.Add(interactable);
        }
        
        /// <summary>
        /// 인터랙션 가능한 객체를 해제합니다
        /// </summary>
        public void UnregisterInteractable(IInteractable interactable)
        {
            if (interactable == null) return;
            _registeredInteractables.Remove(interactable);
        }
        
        /// <summary>
        /// 특정 InteractionType에 해당하는 인터랙션 객체들을 반환합니다
        /// </summary>
        public List<IInteractable> GetInteractablesByType(InteractionType interactionType)
        {
            var result = new List<IInteractable>();
            // null 또는 Destroyed 오브젝트 정리
            _registeredInteractables.RemoveAll(item => item == null || (item as UnityEngine.Object) == null);
            foreach (var interactable in _registeredInteractables)
            {
                if (interactable.GetInteractionType() == interactionType)
                {
                    result.Add(interactable);
                }
            }
            return result;
        }
        
        /// <summary>
        /// 모든 등록된 인터랙션 객체들을 반환합니다
        /// </summary>
        public List<IInteractable> GetAllInteractables()
        {
            _registeredInteractables.RemoveAll(item => item == null || (item as UnityEngine.Object) == null);
            return new List<IInteractable>(_registeredInteractables);
        }
    }
}