using Cielonos.MainGame.Inventory;
using SLSUtilities.General;
using SLSUtilities.UI;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

namespace Cielonos.MainGame.UI
{
    /// <summary>
    /// 机械台左侧列表中的单个选择器条目。
    /// 点击后选中该物品，并通知 MechanicalTableUIPage 更新详情面板。
    /// </summary>
    public class MechanicalTableSelector : UIElementBase
    {
        private MechanicalTableUIPage Page => PlayerCanvas.MainGamePages.mechanicalTablePage;

        public ItemBase item;
        public int stack = 1;

        public Button button;
        public Image background, itemIcon, rarityFrame, selectorHint;
        public TMP_Text itemName, itemStack;
        public RectTransform tagContainer;

        [Header("Visual Settings")]
        public Color normalColor = new Color(0.2f, 0.2f, 0.2f, 0.8f);
        public Color selectedColor = new Color(0.4f, 0.6f, 0.9f, 0.9f);

        private bool isSelected;

        /// <summary>
        /// 用给定的物品配置此选择器的显示内容。
        /// </summary>
        public void Setup(ItemBase itemRef, int itemStack = 1)
        {
            item = itemRef;
            stack = itemStack;

            if (item == null || item.contentData == null)
            {
                Hide();
                return;
            }

            ContentData data = item.contentData;

            // 图标
            Sprite icon = data.itemType == ItemType.MainWeapon ? data.rectIcon : data.squareIcon;
            if (itemIcon != null)
            {
                itemIcon.sprite = icon;
                itemIcon.enabled = icon != null;
            }

            // 名称（本地化）
            if (itemName != null)
            {
                itemName.text = data.displayNameKey.Localize();
            }

            // 堆叠数量
            RefreshStackText();

            // 默认取消选中状态
            SetSelected(false);

            // 绑定按钮事件
            if (button != null)
            {
                button.onClick.RemoveAllListeners();
                button.onClick.AddListener(OnClicked);
            }

            Show();
        }

        /// <summary>
        /// 设置选中/取消选中的视觉状态。
        /// </summary>
        public void SetSelected(bool selected)
        {
            isSelected = selected;

            if (background != null)
            {
                background.color = isSelected ? selectedColor : normalColor;
            }

            if (selectorHint != null)
            {
                selectorHint.enabled = isSelected;
            }
        }

        private void OnClicked()
        {
            Page?.SelectItem(this);
        }

        private void RefreshStackText()
        {
            if (this.itemStack == null) return;

            if (stack > 1)
            {
                this.itemStack.text = $"x{stack}";
                this.itemStack.gameObject.SetActive(true);
            }
            else
            {
                this.itemStack.gameObject.SetActive(false);
            }
        }
    }
}