using System;
using UnityEngine;

namespace SpellBoundAR.Items.Inventories
{
    [Serializable]
    public class BasicInventoryEntry : IInventoryEntry
    {
        public event Action OnQuantityChanged;
        public event Action OnViewsChanged;
        
        [Header("Cache")]
        private IItemTypeData _itemTypeData;
        private int _quantity;
        private int _views;
        private string _timestamp;

        public IItemTypeData ItemTypeData => _itemTypeData;
        
        public string ItemTypeID => _itemTypeData != null ? _itemTypeData.ID : string.Empty;

        public int Quantity
        {
            get => _quantity;
            set
            {
                if (_quantity == value) return;
                _quantity = Mathf.Max(value, 0);
                _timestamp = DateTime.Now.ToShortDateString() + " " + DateTime.Now.ToLongTimeString();
                OnQuantityChanged?.Invoke();
            }
        }
        
        public int Views
        {
            get => _views;
            set
            {
                if (_views == value) return;
                _views = value;
                OnViewsChanged?.Invoke();
            }
        }
        
        public DateTime Timestamp => DateTime.Parse(_timestamp);
        
        public BasicInventoryEntry(IItemTypeData item, int quantity, int views)
        {
            _itemTypeData = item;
            _quantity = quantity;
            _views = views;
            _timestamp = DateTime.Now.ToShortDateString() + " " + DateTime.Now.ToLongTimeString();
        }
    }
}