using System.Collections;
using System.Collections.Generic;
using Services.Interfaces;
using UnityEngine;

namespace Services {
    public class ObjectPoolService:IObjectPool<GameObject> {
        private readonly GameObject prefab;
        private readonly Transform parent;
        private readonly int size;

        private readonly Stack<GameObject> pool = new Stack<GameObject>();
        
        public ObjectPoolService(GameObject prefab, Transform parent, int size = 5) {
            this.prefab = prefab;
            this.parent = parent;
            this.size = size;
        }

        public GameObject Get() {
            return this.pool.Count == 0 ? Object.Instantiate(this.prefab, this.parent) : this.pool.Pop();
        }

        public void Fill() {
            for (int i = 0; i < this.size; i++) {
                Object.Instantiate(this.prefab, this.parent);
            }
        }

        public void Release(GameObject gameObject) {
            this.pool.Push(gameObject);
        }

        public void Clear() {
            this.pool.Clear();
        }
    }
}