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

namespace Cielonos.MainGame.UI
{
    /// <summary>
    /// 奖励选择卡片 UI 组件。
    /// 在奖励台（RewardTable）打开的界面中代表一个可选择的奖励选项。
    /// 支持显示物品图标、名称、堆叠数，并且会对装备升级组件（PrefabricatedComponent）做特殊显示（显示目标装备图标，前缀为“升级：”）。
    /// </summary>
    public class RewardChoiceSelector : UIElementBase
    {
        private RewardChoiceUIPage Page => PlayerCanvas.MainGamePages.rewardChoicePage;

        /// <summary>当前卡片绑定的奖励物品数据。</summary>
        public ItemBase item;
        
        /// <summary>当前奖励的数量/堆叠数。</summary>
        public int stack = 1;

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

        [Header("视觉设置")]
        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>
        /// 初始化卡片，填充奖励的图标、文字、按钮监听等信息。
        /// </summary>
        public void Setup(ItemBase itemRef)
        {
            item = itemRef;

            if (item == null)
            {
                Hide();
                return;
            }

            stack = 1;
            if (item is ConsumableBase consumable)
            {
                stack = consumable.stackAmount;
            }

            ContentData data = item.contentData;
            
            // 针对升级组件 PrefabricatedComponent 进行特殊处理：显示其所指向的目标升级装备的图标和信息
            if (item is PrefabricatedComponent prefabComp && prefabComp.targetEquipment != null)
            {
                data = prefabComp.targetEquipment.contentData;
            }

            if (data == null)
            {
                Debug.LogWarning($"[RewardChoiceSelector] 隐藏选项：项 {item.gameObject.name} (或其目标装备) 的 ContentData 未配置！");
                Hide();
                return;
            }

            Sprite icon = data.itemIcon;
            if (itemIcon != null)
            {
                itemIcon.sprite = icon;
                itemIcon.enabled = icon != null;
            }

            if (itemName != null)
            {
                string nameText = data.displayNameKey.Localize("Items");
                if (item is PrefabricatedComponent)
                {
                    // 升级选项增加中文“升级:”前缀
                    nameText = $"升级: {nameText}";
                }
                itemName.text = nameText;
            }

            RefreshStackText();
            SetSelected(false);

            if (button != null)
            {
                button.onClick.RemoveAllListeners();
                button.onClick.AddListener(OnClicked);
            }

            Show();
        }

        /// <summary>
        /// 设定当前选项是否被选中，更新背景颜色和指示状态。
        /// </summary>
        public void SetSelected(bool selected)
        {
            isSelected = selected;

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

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

        /// <summary>卡片被点击时的回调，通知父级 UIPage 选中自己。</summary>
        private void OnClicked()
        {
            Page?.SelectItem(this);
        }

        /// <summary>根据当前堆叠数量，刷新卡片右下角的数量文本显示。</summary>
        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);
            }
        }
    }
}