using Newtonsoft.Json;
using System.Collections;
using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;
using UnityEngine.UIElements;

/* 这个controller 是用于控制 Warehouse UI菜单的
 */
public class WarehouseController : MonoBehaviour
{
    // Start is called before the first frame update
    // 主页面元素
    private Button foodButton, toyButton, otherButton, backButton;
    private List<ItemInWarehouse> warehouseItems = new();
    private VisualElement itemListView;

    //弹窗元素
    private Button yesButton, noButton;
    private Label msgBody;
    private TextField qtyField;
    private VisualElement msgRoot, msgField;

    // 选中的产品
    private string selectedItemId;
    private string currentTab;


    void OnEnable()
    {
        // 基层元素获取
        var root = GetComponent<UIDocument>().rootVisualElement;
        var mainManu = root.Q<VisualElement>("mainManu");
        itemListView = root.Q<VisualElement>("itemListView");
        foodButton = mainManu.Q<Button>("food");
        foodButton.clicked += () => TabSwitch(foodButton);
        toyButton = mainManu.Q<Button>("toy");
        toyButton.clicked += () => TabSwitch(toyButton);
        otherButton = mainManu.Q<Button>("other");
        otherButton.clicked += () => TabSwitch(otherButton);
        backButton = root.Q<Button>("back");

        // 绑定事件
        backButton.clicked += BackBtnClick;

        // 弹窗元素获取
        msgRoot = root.Q<VisualElement>("msgRoot");
        msgField = msgRoot.Q<VisualElement>("msgField");
        msgBody = msgField.Q<Label>("msgBody");
        yesButton = msgField.Q<Button>("msgYes");
        yesButton.clicked += MsgYesClick;
        noButton = msgField.Q<Button>("msgNo");
        noButton.clicked += MsgNoClick;
        qtyField = msgField.Q<TextField>("qtyField");

        //初始化设定
        LanguageSetting();

        foodButton.transform.scale = new Vector3(1.2f, 1.2f);
        InstallItems("food");
        qtyField.visible = false;
    }

    private void OnDisable()
    {
        warehouseItems.Clear();       // 因为启动时候调用OnEable数据会被重复加载
    }

    // Update is called once per frame
    //void Update()
    //{

    //}

    //菜单语言设定
    void LanguageSetting()
    {
        // 设置 shopping UI界面里面label和按键的语言显示
        string textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "shoppingUI", "button", "food", EnviromentSetting.languageCode });
        foodButton.text = textValue;
        textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "shoppingUI", "button", "toy", EnviromentSetting.languageCode });
        toyButton.text = textValue;
        textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "shoppingUI", "button", "other", EnviromentSetting.languageCode });
        otherButton.text = textValue;
        textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "shoppingUI", "button", "back", EnviromentSetting.languageCode });
        backButton.text = textValue;
        textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "shoppingUI", "button", "yes", EnviromentSetting.languageCode });
        yesButton.text = textValue;
        textValue = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "shoppingUI", "button", "no", EnviromentSetting.languageCode });
        noButton.text = textValue;
    }


    // 将items装载到菜单中，切换商品分类之后，需要重新读取和加载
    void InstallItems(string type)
    {
        currentTab = type;
        var root = GetComponent<UIDocument>().rootVisualElement;
        itemListView.Clear();
        VisualTreeAsset itemResource = Resources.Load<VisualTreeAsset>("Shopping/Item");
        Dictionary<string, int> items = new();
        if (type == "food")
        {
            items = UserProperty.food;
        }
        else if (type == "toy")
        {
            items = UserProperty.toy;
        }
        else if (type == "other")
        {
            items = UserProperty.other;
        }
        foreach (var item in items)
        {
            if (item.Value > 0)
            {
                var itemFrame = new VisualElement();
                itemFrame = itemResource.CloneTree();
                // 从language.json读取item的文字描述
                string desc = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "item", type, item.Key, "description", EnviromentSetting.languageCode });
                var description = itemFrame.Q<Label>("description");
                description.text = desc;

                // 这里复用 shopping UI 里面的 item.uxml
                // UI 里面命名为price，实际是qty
                var price = itemFrame.Q<Label>("price");
                if (item.Value > 999)
                {
                    price.text = "999+";
                }
                else
                {
                    price.text = item.Value.ToString();
                }

                // 读取图片
                string picturePath = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "item", type, item.Key, "picture" });
                var texture = Resources.Load<Texture2D>(picturePath);
                var picture = itemFrame.Q<VisualElement>("picture");
                picture.style.backgroundImage = new StyleBackground(texture);
                itemFrame.RegisterCallback<ClickEvent>(e => ItemClick(e, item.Key, desc));

                itemListView.Add(itemFrame);
            }

        }
    }

    // 点击商品后跳出确认窗口
    void ItemClick(ClickEvent clickEvent, string itemId, string description = null)
    {
        selectedItemId = itemId;
        string targetType = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "item", currentTab, itemId, "target" });
        targetType = currentTab + "_" + targetType;
        string msg = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "warehouseUI", "message", targetType, EnviromentSetting.languageCode });
        if (msg.Contains("<<dog_name>>"))
        {
            msg = msg.Replace("<<dog_name>>", UserProperty.dogs[GameData.focusDog].dog_name);
        }
        if (msg.Contains("<<item_name>>"))
        {
            msg = msg.Replace("<<item_name>>", description);
        }
        msgBody.text = msg;
        msgRoot.visible = true;
    }

    void BackBtnClick()
    {
        HomeSoundEffectController.Instance.PlaySoundEffect(2);

        var uiPlaceholder = GameObject.Find("UI Placeholder");
        if (uiPlaceholder != null)
        {
            var warehouseUI = uiPlaceholder.transform.Find("Warehouse").gameObject;
            var vamUI = uiPlaceholder.transform.Find("VoiceAndMenu").gameObject;
            warehouseUI.SetActive(false);
            vamUI.SetActive(true);
        }
    }


    void TabSwitch(Button btn)
    {
        itemListView.style.backgroundColor = btn.resolvedStyle.backgroundColor;
        foodButton.transform.scale = new Vector3(1f, 1f, 1);
        toyButton.transform.scale = new Vector3(1f, 1f, 1);
        otherButton.transform.scale = new Vector3(1f, 1f, 1);
        btn.transform.scale = new Vector3(1.2f, 1.2f, 1);
        itemListView.Clear();

        HomeSoundEffectController.Instance.PlaySoundEffect(0);

        // 这里btn.name必须和json里面商品类别完全匹配
        //GetItemList(btn.name);
        InstallItems(btn.name);
    }

    // msg no button 点击
    void MsgNoClick()
    {
        msgRoot.visible = false;
    }

    void MsgYesClick()
    {
        //Debug.Log("msg yes clicked");
        msgRoot.visible = false;
        //ItemUseController itemUseController = new ItemUseController();
        ItemUseController.ItemUsed(selectedItemId);

        HomeSoundEffectController.Instance.PlaySoundEffect(1);

        // 关闭菜单
        var uiPlaceholder = GameObject.Find("UI Placeholder");
        if (uiPlaceholder != null)
        {
            var warehouseUI = uiPlaceholder.transform.Find("Warehouse").gameObject;
            var vamUI = uiPlaceholder.transform.Find("VoiceAndMenu").gameObject;
            warehouseUI.SetActive(false);
            vamUI.SetActive(true);
        }
    }

}

public class ItemInWarehouse
{
    public string id;
    public string description;
    public string picture;
    public string qty;

    public ItemInWarehouse(string id, string desc, string qty, string picture)
    {
        this.id = id;
        this.description = desc;
        this.qty = qty;
        this.picture = picture;
    }
}