using UnityEngine;
using YachtDice.Economy;
using YachtDice.Modifiers;

namespace YachtDice.Shop
{
    public class ShopController : MonoBehaviour
    {
        [SerializeField] private ShopCatalog catalog;
        [SerializeField] private ShopView shopView;
        [SerializeField] private CurrencyBank currencyBank;

        private ShopModel model;

        public ShopCatalog Catalog => catalog;

        public void Initialize(ShopModel shopModel)
        {
            model = shopModel;

            shopView.OnBuyClicked += HandleBuyClicked;

            if (currencyBank != null)
                currencyBank.OnBalanceChanged += HandleCurrencyChanged;

            model.OnItemPurchased += HandleItemPurchased;

            shopView.Populate(catalog.AvailableModifiers, model);
            shopView.UpdateCurrencyDisplay(currencyBank != null ? currencyBank.Balance : 0);
        }

        private void OnDestroy()
        {
            if (shopView != null)
                shopView.OnBuyClicked -= HandleBuyClicked;

            if (currencyBank != null)
                currencyBank.OnBalanceChanged -= HandleCurrencyChanged;

            if (model != null)
                model.OnItemPurchased -= HandleItemPurchased;
        }

        private void HandleBuyClicked(ModifierData data)
        {
            model.TryPurchase(data);
        }

        private void HandleCurrencyChanged(int newBalance)
        {
            shopView.UpdateCurrencyDisplay(newBalance);
            shopView.RefreshStates(catalog.AvailableModifiers, model);
        }

        private void HandleItemPurchased(ModifierData data)
        {
            shopView.RefreshStates(catalog.AvailableModifiers, model);
        }
    }
}