riversong-code-showcase/Source/Riversong/Game/World/Production/ProductAmount.cs

using System;
using Sirenix.OdinInspector;
using Unity.Properties;
using UnityEngine;

namespace DanieleMarotta.RiversongCodeShowcase
{
    public interface IProductAmount
    {
        public ProductDefinition Product { get; set; }

        public int Amount { get; set; }
    }

    [Serializable]
    public class ProductAmountAuthoring : IProductAmount
    {
        [field: SerializeField]
        [field: HorizontalGroup]
        [field: HideLabel]
        [CreateProperty]
        public ProductDefinition Product { get; set; }

        [field: SerializeField]
        [field: HorizontalGroup(50)]
        [field: HideLabel]
        [CreateProperty]
        public int Amount { get; set; }

        public void Deconstruct(out ProductDefinition product, out int amount)
        {
            product = Product;
            amount = Amount;
        }
    }
}