using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

public enum ShopItemCardMode
{
    Buy,
    Sell
}

class ShopItemCardKeeper : MonoBehaviour
{
    [Header("Current Item")]
    public EquippableItem SelectedItem;
    public int OriginSlotNumver;

    [Header("Shopping Card")]
    [SerializeField] private Button _buyButton;
    [SerializeField] private Button _sellButton;


    [Header("Item Preveiw Section")]
    [SerializeField] public ShopItemCardMode ShopMode;
    [SerializeField] private TextMeshProUGUI _itemPreviewName;
    [SerializeField] private TextMeshProUGUI _itemPreviewDescription;
    [SerializeField] private TextMeshProUGUI _itemPreviewStats;
    [SerializeField] private TextMeshProUGUI _itemPreviewStatsValue;
    [SerializeField] private Text _itemPreviewPrice;


    public void ShowItemDetails(ItemSlot itemSlot, ShopItemCardMode mode = ShopItemCardMode.Buy)
    {
        SelectedItem        = itemSlot.Item;
        OriginSlotNumver    = itemSlot.Number;

        ShopMode = mode;

        gameObject.active = true;

        BildCardContent();
    }

    public void BildCardContent()
    {
        // Clear poanel
        if (!SelectedItem)
        {
            _itemPreviewName.text = "";
            _itemPreviewDescription.text = "";
            _itemPreviewStats.text = "";
            _itemPreviewStatsValue.text = "";
            _itemPreviewPrice.text = "";

            _buyButton.gameObject.SetActive(false);
            _sellButton.gameObject.SetActive(false);

            return;
        }


        _itemPreviewName.text = SelectedItem.Name;

        _itemPreviewDescription.text = SelectedItem.Description;

        _itemPreviewStats.text = BuildItemStats();
        _itemPreviewStatsValue.text = SelectedItem.Value.ToString();

        _itemPreviewPrice.text = $"Price: {CountPrice()}";
        
        switch(ShopMode)
        {
            case ShopItemCardMode.Buy:
            {
                _sellButton.gameObject.SetActive(false);

                _buyButton.gameObject.SetActive(true);

                break;
            }
            case ShopItemCardMode.Sell:
            {
                _buyButton.gameObject.SetActive(false);

                _sellButton.gameObject.SetActive(true);

                break;
            }
        }
    }

    public string BuildItemStats()
    {
        if(SelectedItem.EquipmentType == EquipmentTypeEnum.Weapon)
            return $"Attack: \n";

        if (SelectedItem.EquipmentType == EquipmentTypeEnum.Helmet || SelectedItem.EquipmentType == EquipmentTypeEnum.Chest)
            return $"Deffence: \n";

        if (SelectedItem.EquipmentType == EquipmentTypeEnum.Boots)
            return $"Speed: \n";

        return "";
    }

    public int CountPrice()
    {
        return SelectedItem.Price;
    }

    public void BuyItem()
    {
        if (!_buyButton.IsActive())
            return;

        var itemPrice = SelectedItem.Price;

        // Check player account balance
        if (!CheckPlayerAccoutnBalance(itemPrice))
        {
            Debug.Log($"You don't have enouht gold - required {itemPrice}");

            return;
        }

        // Change account balance status (refresh view)
        AccountBalanceManager.Instance.DecreaseAccountBalanceValue(SelectedItem.Price);

        // 1. Buy transaction
        // 1.1.1 Add to player Inventory Panel + refresh view
        InventoryUIManager.Instance.Add(SelectedItem);

        if (InventoryUIManager.Instance.GetPanelStatus())
            GameObject.FindObjectOfType<InventoryPanelController>().BuildPanelContent(InventoryUIManager.Instance.GetList());

        // 1.1.2 Save chnages in Inventory Panel
        SceneInventoryDataManager.Instance.SaveDynamicData();

        // 1.2.1 Remove item from Shop Panel
        ShopContentUIManager.Instance.RemoveByPosition(OriginSlotNumver);

        if (ShopUIManager.Instance.GetPanelStatus())
            GameObject.FindObjectOfType<ShopPanelController>().BuildPanelContent(ShopContentUIManager.Instance.GetList());

        // 2 Save changes

        // 2.1 Save chnages in Shop Panel
        SceneInventoryDataManager.Instance.SaveDynamicData();

        // 2.2 Save account balance current status
        AccountBalanceManager.Instance.SaveValue();
    }

    public void SellItem()
    {
        if (!_sellButton.IsActive())
            return;

        // 1. Sell transaction
        // 1.1.1 Remove from player Inventory Panel by position + refresh view
        InventoryUIManager.Instance.RemoveByPosition(OriginSlotNumver);

        if (InventoryUIManager.Instance.GetPanelStatus())
            GameObject.FindObjectOfType<InventoryPanelController>().BuildPanelContent(InventoryUIManager.Instance.GetList());


        // 2. Change account balance status (refresh view)
        AccountBalanceManager.Instance.IncreaseAccountBalanceValue(SelectedItem.Price);


        // 3 Save changes

        // 3.1 Save chnages in Shop Panel
        SceneInventoryDataManager.Instance.SaveDynamicData();

        // 3.2 Save account balance current status
        AccountBalanceManager.Instance.SaveValue();
    }


    public bool CheckPlayerAccoutnBalance(int requiredAmount)
    {
        return AccountBalanceManager.Instance.Gold > requiredAmount;
    }
}