using System;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class ShopManager : MonoBehaviour
{
    #region Statication

    public static ShopManager instance;

    private void Awake()
    {
        if (instance != null && instance != this)
        {
            Destroy(gameObject);
            return;
        }
        instance = this;
        DontDestroyOnLoad(this);
    }

    #endregion
    public List<AbilityUpgrade> buyableUpgrades;
    [SerializeField] private int maxBuyables;
    public int currency; //uh. we need to figure out this one lol
    public GameObject shopUIObject;
    [SerializeField] private Marisa player;
    [Header("UI")] 
    public Transform upgradeListUI;
    public Button templateUpgradeButton;

    private void Start()
    {
        GenerateUpgradeList();
    }

    public void GenerateUpgradeList()
    {
        foreach (AbilityUpgrade upgrade in buyableUpgrades)
        {
            Button newButton = Instantiate(templateUpgradeButton, upgradeListUI);
            newButton.onClick.AddListener(() => BuyUpgrade(upgrade));
        }
    }

    public void BuyUpgrade(AbilityUpgrade abilityToBuy)
    {
        if (currency >= abilityToBuy.cost)
        {
            AbilityManager.instance.upgradesInventory[abilityToBuy]++;
            currency -= abilityToBuy.cost;
        }

    }

    public void SellUpgrade(AbilityUpgrade abilityToSell)
    {
        AbilityManager.instance.upgradesInventory[abilityToSell]--;
        currency += abilityToSell.cost/2;
    }

    public void OpenShopUI()
    {
        shopUIObject.SetActive(true);
        player.stalled = true;
    }

    public void CloseShopUI()
    {
        shopUIObject.SetActive(false);
        player.stalled = false;
    }

    public void UpgradesMenu()
    {
        
    }

    public void SellMenu()
    {
        
    }

    public void TalkMenu()
    {
        
    }

    private void ClearInventoryUI()
    {
        foreach (Transform child in upgradeListUI)
        {
            Destroy(child);
        }
    }
}