import { _decorator, Component, EditBox, instantiate, Node, Prefab } from 'cc';
import { Difficulty, DifficutyData } from '../../script/Manager/LocalDataMgr';
import { LayerMgr } from '../../script/Manager/LayerMgr';
import { DifficultyItem } from './DifficultyItem';
const { ccclass, property } = _decorator;

@ccclass('SelectDifficultyPanel')
export class SelectDifficultyPanel extends Component {
    @property(Node)
    itemRoot: Node = null;
    @property(Node)
    itemPrefab:Node = null;
    @property(EditBox)
    countEditBox:EditBox = null;
    
    _difficultyData: DifficutyData = null
    _items: Node[] = [];
    _itemPool: Node[] = [];

    protected start(): void {
        this.countEditBox.node.on('editing-did-ended', this.onEditChange, this);
    }

   init() {
    this._difficultyData = Difficulty.getDifficutyData();
    const targetCount = this._difficultyData.difficutyCount;
    const currentCount = this._items.length;
    
    // 情况1：需要添加新项目
    if(targetCount > currentCount) {
        for (let i = currentCount; i < targetCount; i++) {
            this.createItem(i);
        }
    }
    // 情况2：需要删除多余项目
    else if(targetCount < currentCount) {
        const removeCount = currentCount - targetCount;
        for (let i = 0; i < removeCount; i++) {
            const item = this._items.pop();
            item.removeFromParent();
            item.active = false;
            this._itemPool.push(item);
        }
    }
    
    // 更新所有项目的数据
    for (let i = 0; i < this._items.length; i++) {
        const scaleValue = i < this._difficultyData.scales.length 
            ? this._difficultyData.scales[i] 
            : 0;
        this._items[i].getComponent(DifficultyItem).init(i, scaleValue);
    }
    
    this.countEditBox.string = this._difficultyData.difficutyCount.toString();
}

    createItem(index: number) {
        let itemNode = this._itemPool.length > 0? this._itemPool.pop(): instantiate(this.itemPrefab);
        itemNode.parent = this.itemRoot;
        this._items.push(itemNode);
        itemNode.active = true
        itemNode.getComponent(DifficultyItem).init(index, this._difficultyData.scales[index])
    }

    onEditChange(ed:EditBox)
    {
        let count = Number(ed.string);
        if(isNaN(count))
        {
            return;
        }
        Difficulty.difficutyData.difficutyCount = count;
        Difficulty.createOrDeleteOtherScale();
        this.init()
        Difficulty.saveDifficutyData();
    }

    onUseSysDataClick()
    {
        Difficulty.setDataToDefault();
        Difficulty.createOrDeleteOtherScale(); // 重置时应用新逻辑
        this.init(); // 刷新UI
        this.node.active = false
    }
    
    onUseCurrentData()
    {
        this.node.active = false
    }
}