CapersProject/Assets/02.Scripts/Item/ItemSlot.cs

using System;
using UnityEngine;

namespace BlueWater.Items
{
    [Serializable]
    public class ItemSlot
    {
        [field: SerializeField, Tooltip("아이템 인덱스")]
        public int Idx { get; private set; }

        [field: SerializeField, Tooltip("아이템 수량")]
        public int Quantity { get; set; }
        
        [field: SerializeField, Tooltip("아이템 획득 시간")]
        public long AcquisitionTime { get; set; }
        
        public ItemSlot(int idx, int quantity)
        {
            Idx = idx;
            Quantity = quantity;
            AcquisitionTime = FormatDateTimeAsNumeric(DateTime.UtcNow);
        }

        public void AddItemQuantity(int quantity)
        {
            Quantity += quantity;
            AcquisitionTime = FormatDateTimeAsNumeric(DateTime.UtcNow);
        }

        public void RemoveItemQuantity(int quantity)
        {
            Quantity -= quantity;
            if (Quantity < 0)
            {
                Quantity = 0;
            }
        }
        
        private static long FormatDateTimeAsNumeric(DateTime dateTime)
        {
            var formattedDateTime = dateTime.ToString("yyyyMMddHHmmss");
            return long.Parse(formattedDateTime);
        }
    }
}