import { BackgroundFillManager } from "./BackgroundFillManager";
import {
  AddLayerCommand,
  PasteLayerCommand,
  RemoveLayerCommand,
  MoveLayerCommand,
  ToggleLayerVisibilityCommand,
  RenameLayerCommand,
  LayerLockCommand,
  SetLayerOpacityCommand,
  SetLayerBlendModeCommand,
  MergeLayersCommand,
  GroupLayersCommand,
  UngroupLayersCommand,
  MergeLayerObjectsCommand,
  LayerObjectsToGroupCommand,
  ReorderLayersCommand,
  ToggleChildLayerVisibilityCommand,
  RenameChildLayerCommand,
  RemoveChildLayerCommand,
  ChildLayerLockCommand,
} from "../commands/LayerCommands";
import {
  SetActiveLayerCommand,
  AddObjectToLayerCommand,
  RemoveObjectFromLayerCommand,
  SelectAllLayersCommand,
  ClearSelectionCommand,
  MoveLayerToTopCommand,
  MoveLayerToBottomCommand,
} from "../commands/ObjectLayerCommands";
import {
  LayerType,
  BlendMode,
  createLayer,
  createBackgroundLayer,
  createFixedLayer,
  OperationType,
  OperationTypes,
  findLayerRecursively,
} from "../utils/layerHelper";
import {
  CreateBackgroundLayerCommand,
  UpdateBackgroundCommand,
  BackgroundSizeCommand,
  BackgroundSizeWithScaleCommand,
} from "../commands/BackgroundCommands";
import { MergeGroupLayerCommand } from "../commands/GroupCommands";
import {
  ExportLayerToImageCommand,
  RasterizeLayerCommand,
} from "../commands/RasterizeLayerCommand";

// 导入图层排序相关类和混入
import {
  LayerSort,
  createLayerSort,
  LayerSortMixin,
  LayerSortUtils,
} from "../utils/LayerSort";

import CanvasConfig from "../config/canvasConfig";
import { isBoolean, template } from "lodash-es";
import {
  findObjectById,
  generateId,
  insertObjectAtZIndex,
  optimizeCanvasRendering,
} from "../utils/helper";
import { message } from "ant-design-vue";
import { fabric } from "fabric-with-all";
import { getOriginObjectInfo } from "../utils/layerUtils";
import { restoreFabricObject } from "../utils/objectHelper";
import { UpdateGroupMaskPositionCommand } from "../commands/UpdateGroupMaskPositionCommand";
// import { useI18n } from 'vue-i18n'
// const {t} = useI18n()
/**
 * 图层管理器 - 负责管理画布上的所有图层
 * 包含图层的创建、删除、修改、排序等操作
 * 现在统一使用命令管理器进行状态管理
 * 集成LayerSort高级排序功能
 */
export class LayerManager {
  /**
   * 创建图层管理器
   * @param {Object} options 配置选项
   * @param {Object} options.canvas fabric.js画布实例
   * @param {Object} options.layers 图层数组响应式引用
   * @param {Object} options.activeLayerId 当前激活图层ID响应式引用
   * @param {Object} options.commandManager 命令管理器
   * @param {Object} options.canvasManager 画布管理器
   * @param {String} options.editorMode 编辑器模式
   * @param {Number} options.canvasWidth 画布宽度
   * @param {Number} options.canvasHeight 画布高度
   * @param {String} options.backgroundColor 背景颜色
   * @param {Function} options.t  国际化函数
   */
  constructor(options) {
    this.canvas = options.canvas;
    this.layers = options.layers;
    this.activeLayerId = options.activeLayerId;
    this.commandManager = options.commandManager;
    this.canvasManager = options.canvasManager || null;
    this.lastSelectLayerId = options.lastSelectLayerId || { value: null }; // 上次选中的图层ID
    this.t = options.t || ((key) => key); // 国际化函数，默认为直接返回key

    this.backgroundFillManager = new BackgroundFillManager({
      canvas: this.canvas,
      layers: this.layers,
      commandManager: this.commandManager,
      canvasManager: this.canvasManager,
	  layerManager: this,
    });

    // 编辑器模式：draw(绘画)、select(选择)、pan(拖拽)
    this.editorMode = options.editorMode || CanvasConfig.defaultTool;

    // 画布尺寸
    this.canvasWidth = options.canvasWidth || 800;
    this.canvasHeight = options.canvasHeight || 600;

    // 默认背景颜色
    this.backgroundColor = options.backgroundColor || { value: "#ffffff" };

    // 复制粘贴相关
    this.clipboardData = null;

    // 操作状态标志，用于控制状态保存
    this.isExecutingCommand = false;
    // 是否正在执行操作
    this.operationInProgress = false;

    // 红绿图模式相关
    this.isRedGreenMode = options.isRedGreenMode || false;
    this.redGreenModeManager = null;

    // 初始化图层排序工具
    this.layerSort = null;
    this.initLayerSort();

    // 初始化相关命令
    this.initCommandManager();
  }

  /**
   * 初始化命令管理器
   * 现在直接使用命令类，不再需要注册命令
   */
  initCommandManager() {
    // 命令注册逻辑已移除，现在直接使用命令类实例化和执行
    console.log("CommandManager 已初始化，使用直接命令调用模式");
  }

  /**
   * 初始化图层排序工具
   * 创建LayerSort实例并绑定到LayerManager
   */
  initLayerSort() {
    if (this.canvas && this.layers) {
      this.layerSort = createLayerSort(this.canvas, this.layers, {
        commandManager: this.commandManager,
      });
      console.log("图层排序工具已初始化");
    }
  }

  /**
   * 设置编辑器模式
   * @param {string} mode 'draw'、'select'或'pan'
   */
  toolChanged(mode) {
    if (!OperationTypes.includes(mode)) {
      console.warn(`不支持的编辑器模式: ${mode}`);
      return;
    }

    this.editorMode = mode;

    // 更新所有对象的交互性
    this.updateLayersObjectsInteractivity();

    console.log(`已切换到${mode}模式`);
  }

  setToolManager(toolManager) {
    this.toolManager = toolManager;
  }

  /**
   * 更新所有画布对象的交互性
   * 根据当前编辑模式和图层状态设置对象的交互属性
   * @private
   */
  async updateLayersObjectsInteractivity(
    isUseOptimize = true,
    { isMoveing = false } = {}
  ) {
    if (!this.canvas) return;
    if (isUseOptimize) {
      // 优化渲染  -  统一批处理  支持异步回调
      await optimizeCanvasRendering(this.canvas, async () => {
        // 应用图层交互规则
        await this._applyInteractionRules({ isMoveing });
      });
    } else {
      // 直接应用图层交互规则
      await this._applyInteractionRules({ isMoveing });
    }

    // customType: "selectionObject",
    // 清空没有关联的选区图层
    const selectionObjects = this.canvas
      .getObjects()
      ?.filter((obj) => obj.customType == "selectionObject");

    selectionObjects.forEach((obj) => {
      const isObjExtis = this.layers?.value.find(
        (layer) => layer?.selectObject?.id == obj.id
      );
      if (!isObjExtis) {
        // 不存在则移除对象
        this?.canvas?.remove(obj);
      }
    });

    selectionObjects && this.canvas.renderAll();

    // // 性能优化：使用requestAnimationFrame
    // requestAnimationFrame(() => {
    //   // 暂停渲染以提高性能
    //   this.canvas.skipTargetFind = true;
    //   // this.canvas.discardActiveObject();

    //   // 暂停实时渲染和对象查找
    //   const wasRenderOnAddRemove = this.canvas.renderOnAddRemove;
    //   this.canvas.renderOnAddRemove = false;

    //   // 应用图层交互规则
    //   this._applyInteractionRules();

    //   // 恢复渲染设置
    //   this.canvas.renderOnAddRemove = wasRenderOnAddRemove;
    //   this.canvas.skipTargetFind = false;
    //   // this.canvas.renderAll();
    //   this.canvas.renderAll(); // 确保画布重新渲染 - 同步渲染
    // });
  }
  async _setObjectInteractivity(obj, layer, editorMode) {
    // 设置可见性
    obj.visible = layer.visible;

    // 判断对象是否在当前活动图层上
    const isInActiveLayer = obj.layerId === this.activeLayerId.value;

    // 基于 fabric-with-erasing 库的 erasable 属性设置擦除权限
    // 只有活动图层、可见、非锁定、非背景、非固定图层的对象才可擦除
    obj.erasable =
      isInActiveLayer &&
      layer.visible &&
      !layer.locked &&
      !layer.isBackground &&
      !layer.isFixed;

    // 图层状态决定交互性
    if (layer.isBackground || obj.isBackground || layer.isFixed) {
      //|| layer.isFixed
      // 背景层永远不可选择和擦除
      obj.selectable = false;
      obj.evented = false;
      obj.erasable = !layer.locked;
    } else if (layer.locked) {
      // 锁定图层不可交互和擦除
      obj.selectable = false;
      obj.evented = false;
      obj.erasable = false;
    } else {
      // 根据编辑模式设置交互性
      switch (editorMode) {
        case OperationType.SELECT:
          obj.selectable = true;
          obj.evented = true;
          break;
        case OperationType.ERASER:
          // 橡皮擦模式：利用 fabric-with-erasing 的内置机制
          // 只需要设置 erasable 属性，库会自动处理擦除逻辑
          obj.selectable = false;
          obj.evented = true; // 需要设置为 true 以接收鼠标事件
          // erasable 已在上面根据图层状态设置
          break;
        case OperationType.DRAW:
        case OperationType.EYEDROPPER:
        case OperationType.PAN:
        case OperationType.WAVE:
        case OperationType.LIQUIFY:
        case OperationType.LASSO:
        case OperationType.LASSO_RECTANGLE:
        case OperationType.AREA_CUSTOM:
        case OperationType.AREA_RECTANGLE:
          obj.selectable = false;
          obj.evented = false;
          break;
        default:
          obj.selectable = false;
          obj.evented = false;
      }

      if (this.isRedGreenMode) {
        // 红绿图模式下 所有普通图层都可擦除
        obj.erasable =
          layer.visible &&
          !layer.locked &&
          !layer.isBackground &&
          !layer.isFixed;
      }

      // 平移模式下，禁用多选和擦除
      if (editorMode === OperationType.PAN) {
        obj.selectable = false;
        obj.evented = false;
        obj.erasable = false;
      }
    }

    // 应用图层视觉属性
    if (layer.opacity !== undefined) obj.opacity = layer.opacity;
    if (layer.blendMode) obj.globalCompositeOperation = layer.blendMode;
  }

  // 私有方法：应用交互规则
  async _applyInteractionRules({ isMoveing }) {
    console.log("updateLayersObjectsInteractivity ===>", this.editorMode);
    const objects = this.canvas.getObjects();
    const editorMode = this.editorMode || CanvasConfig.defaultTool;
    const layers = this.layers?.value || [];

    // 创建缓存以避免重复查找
    const layerMap = {};
    layers.forEach((layer) => {
      layerMap[layer.id] = layer;
      layer?.children?.forEach((childLayer) => {
        layerMap[childLayer.id] = childLayer;
      });
    });

    // 批量更新对象
    objects.forEach(async (obj) => {
      const layer = layerMap[obj.layerId];

      if (!obj.layerId) {
        // 没有关联图层的对象使用默认设置
        obj.selectable = false;
        obj.evented = false;
        obj.erasable = false; // 未关联图层的对象不可擦除
        return;
      }

      if (!layer) return;

      // 设置一级图层对象的交互性
      await this._setObjectInteractivity(obj, layer, editorMode);

      // 设置子图层对象的交互性
      layer?.children?.forEach(async (childLayer) => {
        const childObj = this.canvas
          .getObjects()
          .find((o) => o.layerId === childLayer.id);
        if (childObj) {
          await this._setObjectInteractivity(childObj, childLayer, editorMode);
        }
      });
    });

    // 设置裁剪对象
    layers.forEach(async (layer) => {
      let clippingMaskFabricObject = null;
      if (layer.clippingMask) {
        // 反序列化 clippingMask
        clippingMaskFabricObject = await restoreFabricObject(
          layer.clippingMask,
          this.canvas
        );
        clippingMaskFabricObject.clipPath = null;

        clippingMaskFabricObject.set({
          // 设置绝对定位
          // ...getOriginObjectInfo(layer.clippingMask), // 恢复原定位
          absolutePositioned: true,
        });
      }
      // 如果是组图层  则给所有子对象设置裁剪对象
      if (layer.type === LayerType.GROUP || layer.children?.length > 0) {
        // if (layer.fill) {
        //   const fabricObject = this.canvas.getObjects().find((o) => o.id === layer.fill.id);
        //   if (fabricObject) {
        //     fabricObject.clipPath = clippingMaskFabricObject;
        //     fabricObject.dirty = true; // 标记为脏对象
        //     fabricObject.setCoords();
        //   }
        // }
        layer.children.forEach((childLayer) => {
          const childObj = this.canvas
            .getObjects()
            .find((o) => o.layerId === childLayer.id);
          if (childObj) {
            childObj.clipPath = clippingMaskFabricObject;
            childObj.dirty = true; // 标记为脏对象
            childObj.setCoords();
          }

          // if (childLayer.fill) {
          //   const fabricObject = this.canvas.getObjects().find((o) => o.id === childLayer.fill.id);
          //   if (fabricObject) {
          //     fabricObject.clipPath = clippingMaskFabricObject;
          //     fabricObject.dirty = true; // 标记为脏对象
          //     fabricObject.setCoords();
          //   }
          // }
        });
      } else {
        layer.fabricObjects?.forEach((obj) => {
          const fabricObject = this.canvas
            .getObjects()
            .find((o) => o.id === obj.id);
          if (fabricObject) {
            fabricObject.clipPath = clippingMaskFabricObject;
            fabricObject.dirty = true; // 标记为脏对象
            fabricObject.setCoords();
          }
        });

        // if (layer.fill) {
        //   const fabricObject = this.canvas.getObjects().find((o) => o.id === layer.fill.id);
        //   if (fabricObject) {
        //     fabricObject.clipPath = clippingMaskFabricObject;
        //     fabricObject.dirty = true; // 标记为脏对象
        //     fabricObject.setCoords();
        //   }
        // }
      }

      // 设置画布选区内容
      if (layer.selectObject && !isMoveing) {
        // 如果有选区对象
        let insetIndex = objects.findIndex(
          (o) => o.id === layer.selectObject.id
        );
        let isOldSelectObject = insetIndex >= 0; // 是否存在旧的选区对象
        const newSelectObject = await restoreFabricObject(
          layer.selectObject,
          this.canvas
        );

        if (insetIndex < 0) {
          // 如果没有找到选区对象，则添加到画布  先查找子图层元素下标  如果没有则要向前查找有元素的下标 否则直接添加，因为选区要遮罩在选区图层的最上面
          layer.children?.forEach((childLayer) => {
            const childObj = this.canvas
              .getObjects()
              .find((o) => o.layerId === childLayer.id);
            if (childObj) {
              insetIndex = objects.indexOf(childObj);
            }
          });
        }

        // 向前查找，找不到则添加到最后
        if (insetIndex < 0) {
          // 如果没有找到选区对象，则添加到画布
          const layerIndex = this.layers.value.findIndex(
            (ll) => ll.id === layer.id
          );

          for (let i = layerIndex - 1; i >= 0; i--) {
            const l = this.layers.value[i];
            if (l.fabricObjects?.length > 0) {
              insetIndex = objects.findIndex(
                (o) => o.id === l.fabricObjects?.[0].id
              );
              if (insetIndex >= 0) break; // 找到第一个有对象的图层
            }
          }
          insetIndex = insetIndex < 0 ? objects.length : insetIndex;
        }

        newSelectObject.set({
          id: layer.selectObject.id,
          customType: layer.selectObject.customType,
          selectable: false,
          evented: false,
          erasable: false,
        });

        // 有则更新对象
        // 没有则反序列创建新的选区对象
        insertObjectAtZIndex(
          this.canvas,
          newSelectObject,
          insetIndex,
          false,
          isOldSelectObject
        );
      }
    });
  }

  /**
   * 填充图层背景
   * @param {string} layerId 图层ID
   * @param {string} fillColor 填充颜色
   * @param {boolean} undoable 是否可撤销
   */
  async fillLayerBackground(layerId, fillColor, undoable = true) {
    layerId = this.activeLayerId.value || layerId;
    await this.backgroundFillManager.fillLayerBackground(
      layerId,
      fillColor,
      undoable
    );
  }

  /**
   * 创建新图层
   * @param {string} name 图层名称
   * @param {string} type 图层类型
   * @param {Object} options 额外选项
   * @returns {string} 新创建的图层ID
   */
  async createLayer(name = null, type = LayerType.EMPTY, options = {}) {
    // 生成唯一ID
    const layerId = options.id || options.layerId || generateId("layer_");

    // 计算普通图层数量（非背景、非固定）
    const normalLayersCount = this.layers.value.filter(
      (layer) => !layer.isBackground && !layer.isFixed
    ).length;
    // 计算插入位置，如果没有指定insertIndex，则根据当前选中图层决定插入位置
    // 添加到图层列表
    // let insertIndex = this._getInsertIndexAboveActiveLayer();
    // if (options.insertIndex !== undefined) {
    //   insertIndex = options.insertIndex;
    // }

    // 创建新图层
    const newLayer = createLayer({
      id: layerId,
      name: name || `图层 ${normalLayersCount + 1}`,
      type: type,
      visible: true,
      locked: false,
      opacity: 1.0,
      blendMode: BlendMode.NORMAL,
      fabricObjects: [],
      children: [],
      ...options,
    });

    // 直接创建和执行命令
    const command = new AddLayerCommand({
      canvas: this.canvas,
      layers: this.layers,
      newLayer: newLayer,
      activeLayerId: this.activeLayerId,
      options,
    });

    // 如果有额外选项，设置命令的undoable属性
    command.undoable = options.undoable;

    // 如果是第一个图层，或者普通图层数量小于等于3，设置为不可撤销
    if (normalLayersCount < 1) {
      command.undoable = false;
    }

    // 执行命令
    if (this.commandManager) {
      await this.commandManager.execute(command);
    } else {
      await command.execute();
    }

    return layerId;
  }

  /**
   * 创建背景图层
   * @param {string} name 图层名称
   * @returns {string} 创建的背景层ID
   */
  createBackgroundLayer(name = "背景") {
    // 检查是否已有背景图层
    const hasBackgroundLayer = this.layers.value.some(
      (layer) => layer.isBackground
    );

    if (hasBackgroundLayer) {
      console.warn("已存在背景层，不再创建新的背景层");
      return null;
    }

    // 创建背景图层
    const bgLayer = createBackgroundLayer({
      name: name,
      canvasWidth: this.canvasWidth,
      canvasHeight: this.canvasHeight,
      backgroundColor: this.backgroundColor.value,
    });

    // 直接创建和执行命令
    const command = new CreateBackgroundLayerCommand({
      canvas: this.canvas,
      layers: this.layers,
      activeLayerId: this.activeLayerId,
      canvasManager: this.canvasManager,
      backgroundLayer: bgLayer,
    });

    // 背景图层设置为不可撤销
    command.undoable = false;

    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }

    // 返回创建的背景层ID
    return bgLayer.id;
  }

  /**
   * 创建固定图层 - 位于背景图层之上，普通图层之下
   * @param {string} name 图层名称
   * @returns {string} 创建的固定图层ID
   */
  createFixedLayer(name = "固定图层") {
    // 检查是否已有固定图层
    const hasFixedLayer = this.layers.value.some((layer) => layer.isFixed);

    if (hasFixedLayer) {
      console.warn("已存在固定图层，不再创建新的固定图层");
      return null;
    }

    // 生成唯一ID
    const layerId = `fixed_layer_${Date.now()}_${Math.floor(
      Math.random() * 1000
    )}`;

    // 创建固定图层
    const fixedLayer = createFixedLayer({
      id: layerId,
      name: name,
    });

    // 直接创建和执行命令
    const command = new AddLayerCommand({
      canvas: this.canvas,
      layers: this.layers,
      newLayer: fixedLayer,
      activeLayerId: this.activeLayerId,
      insertIndex: this._getFixedLayerInsertionIndex(),
    });

    // 固定图层设置为不可撤销
    command.undoable = false;

    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }

    return layerId;
  }

  /**
   * 获取应该插入固定图层的位置索引（在背景图层之上）
   * @private
   * @returns {Number} 插入索引
   */
  _getFixedLayerInsertionIndex() {
    // 找到背景图层的位置
    const bgIndex = this.layers.value.findIndex((layer) => layer.isBackground);
    if (bgIndex !== -1) {
      return bgIndex; // 插入到背景图层之前（在数组中这意味着位于背景图层之上）
    }
    return this.layers.value.length; // 如果没有背景图层，则添加到最后
  }

  /**
   * 初始化图层，确保有背景层、固定图层和一个空白图层
   */
  async initializeLayers() {
    // 如果没有任何图层，创建背景层、固定图层和一个空白图层
    if (this.layers.value.length === 0) {
      // 创建背景图层
      this.createBackgroundLayer(this.t("Canvas.Background"));

      // 创建固定图层，位于背景图层之上
      this.createFixedLayer(this.t("Canvas.FixedLayer"));

      // 创建一个空白图层（默认位于背景图层和固定图层之上）
      await this.createLayer(this.t("Canvas.Layer1"));
    } else {
      // 检查是否已有背景层
      const hasBackgroundLayer = this.layers.value.some(
        (layer) => layer.isBackground
      );

      if (!hasBackgroundLayer) {
        this.createBackgroundLayer(this.t("Canvas.Background"));
      }

      // 检查是否已有固定图层
      const hasFixedLayer = this.layers.value.some((layer) => layer.isFixed);

      if (!hasFixedLayer) {
        this.createFixedLayer();
      }

      // 检查是否至少有一个普通图层（非背景、非固定）
      const hasNormalLayer = this.layers.value.some(
        (layer) => !layer.isBackground && !layer.isFixed
      );

      if (!hasNormalLayer) {
        await this.createLayer(this.t("Canvas.Layer1"));
      }
    }

    // 排序图层
    this.sortLayers();

    // 更新对象交互性
    this.updateLayersObjectsInteractivity();
  }

  /**
   * 添加对象到图层
   * @param {Object} fabricObject fabric对象
   * @param {string} layerId 目标图层ID，如果不提供则使用当前活动图层
   * @returns {Object} 添加的对象
   */
  addObjectToLayer(fabricObject, layerId = null, options = {}) {
    const targetLayerId = layerId || this.activeLayerId.value;

    // 如果没有指定图层ID，也没有活动图层，则返回错误
    if (!targetLayerId) {
      console.warn("没有指定目标图层ID且没有活动图层，无法添加对象");
      return null;
    }

    // 验证目标图层是否存在
    const { layer: targetLayer } = findLayerRecursively(
      this.layers.value,
      targetLayerId
    );
    if (!targetLayer) {
      console.error(`目标图层 ${targetLayerId} 不存在`);
      return null;
    }

    // 直接创建和执行命令
    const command = new AddObjectToLayerCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: targetLayerId,
      fabricObject: fabricObject,
      layerManager: this,
    });

    // 设置命令的撤销状态
    if (isBoolean(options.undoable)) command.undoable = options.undoable; // 是否撤销

    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }

    return fabricObject;
  }

  /**
   * 向固定图层添加对象
   * @param {Object} fabricObject fabric对象
   * @returns {Object|null} 添加的对象或null（如果添加失败）
   */
  addObjectToFixedLayer(fabricObject) {
    // 查找固定图层
    const fixedLayer = this.layers.value.find((layer) => layer.isFixed);

    // 如果没有固定图层，则创建一个
    if (!fixedLayer) {
      const fixedLayerId = this.createFixedLayer();
      return this.addObjectToLayer(fabricObject, fixedLayerId);
    }

    // 添加对象到固定图层
    return this.addObjectToLayer(fabricObject, fixedLayer.id);
  }

  /**
   * 从图层中移除对象
   * @param {string|Object} objectOrId 要移除的对象或其ID
   * @returns {boolean} 是否移除成功
   */
  removeObjectFromLayer(objectOrId) {
    // 获取对象ID
    const objectId =
      typeof objectOrId === "string" ? objectOrId : objectOrId.id;

    if (!objectId) {
      console.error("无效的对象ID");
      return false;
    }

    // 直接创建和执行命令
    const command = new RemoveObjectFromLayerCommand({
      canvas: this.canvas,
      layers: this.layers,
      objectId: objectId,
      objectOrId: objectOrId,
    });

    // 执行命令
    if (this.commandManager) {
      return this.commandManager.execute(command);
    } else {
      return command.execute();
    }
  }

  /**
   * 设置活动图层
   * @param {string} layerId 图层ID
   */
  setActiveLayer(layerId, options = {}) {
    // this.lastSelectLayerId.value = layerId; // 更新最后选择的图层ID
    if (layerId === this.activeLayerId.value) {
      console.warn("当前图层已是活动图层，无需重复设置");
      return;
    }
    // 直接创建和执行命令
    const command = new SetActiveLayerCommand({
      layers: this.layers,
      canvas: this.canvas,
      layerManager: this,
      activeLayerId: this.activeLayerId,
      layerId: layerId,
      parentId: options?.parentId,
      editorMode: this.editorMode,
      ...options,
    });
    // 如果有额外选项，设置命令的undoable属性
    command.undoable = !!options.undoable;
    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }
  }

  /**
   * 获取当前活动图层
   * @return {Object} layer 图层对象
   */
  getActiveLayer() {
    if (!this.activeLayerId.value) {
      console.warn(
        "没有活动图层ID，无法获取活动图层   ====  默认设置第一个图层为活动图层"
      );
      this.activeLayerId.value = this.layers.value[0]?.id || null;
    }

    try {
      const { layer: activeLayer } = findLayerRecursively(
        this.layers.value,
        this.activeLayerId.value
      );
      if (activeLayer) {
        return activeLayer;
      } else {
        console.warn("没有活动图层");
        return null;
      }
    } catch (error) {
      console.error("获取活动图层失败:", error);
      return null;
    }
  }

  // 获取当前活动图层ID
  getActiveLayerId() {
    return this.activeLayerId.value;
  }

  /**
   * 根据ID获取图层
   * @param {string} layerId 图层ID
   * @returns {Object|null} 图层对象或null
   */
  getLayerById(layerId) {
    const { layer } = findLayerRecursively(
      this.layers?.value ?? this.layers,
      layerId
    );
    return layer;
  }

  /**
   * 根据name获取图层
   * @param {string} layerName 图层名称
   * @returns {Object|null} 图层对象或null
   */
  getLayerByName(layerName) {
    const layer = this.layers.value.find((layer) => layer.name === layerName);
    return layer || null;
  }


  /**
   * 获取当前图层对象的列表
   * @param {string} layerId 可选，指定图层ID，默认使用当前活动图层
   * @returns {Array} 图层中的对象列表
   */
  getLayerObjects(layerId = null) {
    const targetLayerId = layerId || this.activeLayerId.value;
    if (!targetLayerId) return [];

    const layer = this.getLayerById(targetLayerId);
    if (!layer) return [];

    // 如果是背景图层且有单个对象
    if (layer.isBackground && layer.fabricObject) {
      return [layer.fabricObject];
    }

    // 普通图层返回对象列表
    return Array.isArray(layer.fabricObjects) ? layer.fabricObjects : [];
  }

  /**
   * 移除图层
   * @param {string} layerId 图层ID
   * @returns {boolean} 是否移除成功
   */
  removeLayer(layerId) {
    // 查找要删除的图层
    const { layer, parent } = findLayerRecursively(this.layers.value, layerId);
    // 如果是背景层或固定层，不允许删除
    if (layer && (layer.isBackground || layer.isFixed)) {
      console.warn(layer.isBackground ? "背景层不可删除" : "固定层不可删除");
      message.warning(layer.isBackground ? "背景层不可删除" : "固定层不可删除");
      return false;
    }

    // 检查是否是唯一的普通图层
    const normalLayers = this.layers.value.filter((l) => !l.isBackground && !l.isFixed);
	console.log("普通图层:", normalLayers)
    if (normalLayers.length === 1) {
      console.warn("不能删除唯一的普通图层");
      message.warning("不能删除唯一的普通图层");
      return false;
    }
    // // 如果图层有子图层，提示确认
    // if (layer && layer.children && layer.children.length > 0) {
    //   console.warn("该图层包含子图层，删除将同时删除所有子图层");
    //   message.warning("该图层包含子图层，删除将同时删除所有子图层");
    // }

    // 删除的是子图层
    if (parent && layer) {
      this.removeChildLayer(layer.id, parent.id);
      return true;
    }

    // 直接创建和执行命令
    const command = new RemoveLayerCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: layerId,
      activeLayerId: this.activeLayerId,
      layerManager: this,
    });

    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }

    return true;
  }

  updateLayerObject(layerId, fabricObject) {
    // 查找图层
    const { layer } = findLayerRecursively(this.layers.value, layerId);
    if (!layer) {
      console.error(`图层 ${layerId} 不存在`);
      return;
    }

    const tempFabricObject =
      fabricObject?.toObject?.([
        "id",
        "layerId",
        "layerName",
        "isBackgroud",
        "isFixed",
      ]) || fabricObject;
    if (layer.isFixed || layer.isBackground) {
      layer.fabricObject = tempFabricObject;
    } else {
      layer.fabricObjects =
        layer.fabricObjects.map((item) => {
          if (item.id === tempFabricObject.id) {
            // 更新对象属性
            return tempFabricObject;
          }
          return item;
        }) || [];
    }
  }
  /**
   * 移动图层位置
   * @param {string} layerId 图层ID
   * @param {string} direction 移动方向，'up'、'down'、'toTop'或'toBottom'
   * @returns {boolean} 是否移动成功
   */
  moveLayer(layerId, direction) {
    // 查找要移动的图层
    const { layer } = findLayerRecursively(this.layers.value, layerId);

    // 如果是背景层或固定层，不允许移动
    if (layer && (layer.isBackground || layer.isFixed)) {
      console.warn(
        layer.isBackground ? this.t("背景层不可移动") : this.t("固定层不可移动")
      );
      return false;
    }

    let command;

    // 根据方向选择相应的命令
    switch (direction) {
      case "toTop":
        command = new MoveLayerToTopCommand({
          canvas: this.canvas,
          layers: this.layers,
          layerId: layerId,
          layerSort: this.layerSort,
        });
        break;
      case "toBottom":
        command = new MoveLayerToBottomCommand({
          canvas: this.canvas,
          layers: this.layers,
          layerId: layerId,
          layerSort: this.layerSort,
        });
        break;
      case "up":
      case "down":
      default:
        command = new MoveLayerCommand({
          canvas: this.canvas,
          layers: this.layers,
          layerId: layerId,
          layerSort: this.layerSort,
          direction: direction,
        });
        break;
    }

    // 执行命令
    if (this.commandManager) {
      const result = this.commandManager.execute(command);
      if (result) {
        console.log(`✅ 图层移动成功: ${direction}`);
      }
      return result;
    } else {
      const result = command.execute();
      if (result) {
        // 更新画布渲染顺序
        console.log(`✅ 图层移动成功: ${direction}`);
      }
      return result;
    }
  }

  // 设置激活当前图层下画布中的所有对象，并变成选择组
  setAllActiveGroupLayerCanvasObject(layer) {
    // 获取当前图层下所有元素
    // 选择当前组下所有画布元素
    const allObjects = layer.children.reduce((acc, child) => {
      // 如果子图层有fabricObjects，则添加到结果数组
      child?.fabricObjects?.forEach((obj) => {
        const { object } = findObjectById(this.canvas, obj.id);
        if (object) {
          // if (!layerMask) {
          //   layerMask = fabric.util.object.clone(object.clipPath);
          // }
          // object.clipPath = null; // 确保克隆的遮罩没有clipPath
          acc.push(object);
        }
      });

      if (child?.fabricObject) {
        const { object } = findObjectById(this.canvas, child?.fabricObject.id);
        if (object) {
          // if (!layerMask) {
          //   layerMask = fabric.util.object.clone(object.clipPath);
          // }
          // object.clipPath = null; // 确保克隆的遮罩没有clipPath
          acc.push(object);
        }
      }

      // if (child.fill) {
      //   // 如果图层有填充颜色，设置所有对象的填充颜色
      //   const { object } = findObjectById(this.canvas, child.fill.id);
      //   if (object) {
      //     acc.push(object);
      //   }
      // }

      return acc;
    }, []);

    // if (layer.fill) {
    //   // 如果图层有填充颜色，设置所有对象的填充颜色
    //   const { object } = findObjectById(this.canvas, layer.fill.id);
    //   if (object) {
    //     allObjects.push(object);
    //   }
    // }
    if (allObjects.length) {
      // 切换到选择模式
      this?.toolManager?.setTool(OperationType.SELECT);

      // 如果有对象，创建选择组
      this.canvas.discardActiveObject(); // 取消当前活动对象
      this.canvas.renderAll(); // 确保画布渲染

      // const { object } = findObjectById(this.canvas, layer.clippingMask?.id);

      // 选中多个对象,不是创建组
      // 多个对象时创建活动选择组
      let activeSelection = new fabric.ActiveSelection(allObjects, {
        canvas: this.canvas,
      });

      // if (object) {
      //   const tempClipPath = fabric.util.object.clone(object);
      //   tempClipPath.clipPath = null;
      //   tempClipPath.set({
      //     // 设置绝对定位
      //     // ...layer.clippingMask, // 恢复原定位
      //     ...getOriginObjectInfo(layer.clippingMask),
      //     absolutePositioned: true,
      //   });
      //   activeSelection.clipPath = tempClipPath; // 保留第一个对象的裁剪路径
      // }

      // // 监听选择取消事件，恢复原始裁剪路径
      // const restoreClipPaths = () => {
      //   allObjects.forEach((obj) => {
      //     if (obj._originalClipPath !== undefined) {
      //       obj.clipPath = obj._originalClipPath;
      //       delete obj._originalClipPath;
      //     }
      //   });
      //   this.canvas.off("selection:cleared", restoreClipPaths);
      //   this.canvas.off("selection:updated", restoreClipPaths);
      // };

      // this.canvas.on("selection:cleared", restoreClipPaths);
      // this.canvas.on("selection:updated", restoreClipPaths);

      // 设置活动选择组的属性
      this.canvas.setActiveObject(activeSelection);
      // 为活动选择组添加移动事件监听器，用于同步更新遮罩位置
      this._setupGroupMaskMovementSync(activeSelection, layer);

      activeSelection = null; // 清理引用，避免内存泄漏
      // 确保选择组正确渲染
      // activeSelection.setCoords();
    }
  }

  /**
   * 选择图层下的所有画布对象
   * @param {string} layerId 图层ID
   * @returns {fabric.ActiveSelection|null} 返回活动选择组或null
   */
  async selectLayerObjects(layerId) {
    // 查找图层
    const { layer } = findLayerRecursively(this.layers.value, layerId);
    if (!layer) {
      console.error(`图层 ${layerId} 不存在`);
      return;
    }
    // 获取图层下的所有对象
    const objects =
      layer.fabricObjects
        ?.map((obj) => {
          const { object } = findObjectById(this.canvas, obj.id);
          return object;
        })
        ?.filter(Boolean) || [];
    if (objects.length === 0) {
      console.warn(`图层 ${layerId} 没有对象可供选择`);
      return;
    }
    // 切换到选择模式
    this?.toolManager?.setTool(OperationType.SELECT);
	if(objects.length === 1) {
		this.canvas.setActiveObject(objects[0]);
		return objects[0];
	}
    // 创建一个新的活动选择组
    const activeSelection = new fabric.ActiveSelection(objects, {
      canvas: this.canvas,
      preserveObjectStacking: true, // 保留对象堆叠顺序
    });
    // 设置活动选择组的属性
    this.canvas.setActiveObject(activeSelection);
    // 渲染画布
    this.canvas.renderAll();
    // 设置活动选择组的坐标
    activeSelection.setCoords();
    // 更新对象交互性
    this.updateLayersObjectsInteractivity();
    // 返回活动选择组
    return activeSelection;
  }

  /**
   * 切换图层可见性
   * @param {string} layerId 图层ID
   * @returns {boolean} 更新后的可见性状态
   */
  async toggleLayerVisibility(layerId) {
    // 直接创建和执行命令
    const command = new ToggleLayerVisibilityCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: layerId,
      layerManager: this,
    });

    // 执行命令
    if (this.commandManager) {
      return await this.commandManager.execute(command);
    } else {
      return await command.execute();
    }
  }

  /**
   * 查询图层可见性
   * @param {string} layerId 图层ID
   * @returns {boolean} 图层是否可见
   */
  getLayerVisibility(layerId) {
    // 查找图层
    const { layer } = findLayerRecursively(this.layers.value, layerId);
    if (!layer) {
      console.error(`图层 ${layerId} 不存在`);
      return false;
    }
    // 返回图层的可见性状态
    return layer.visible;
  }

  /**
   * 切换图层锁定状态
   * @param {string} layerId 图层ID
   * @returns {boolean} 更新后的锁定状态
   */
  toggleLayerLock(layerId) {
    // 直接创建和执行命令
    const command = new LayerLockCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: layerId,
      layerManager: this,
    });

    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }

    // 更新对象交互性
    this.updateLayersObjectsInteractivity();

    // 获取当前锁定状态
    const layer = this.layers.value.find((layer) => layer.id === layerId);
    return layer ? layer.locked : false;
  }

  /**
   * 设置图层不透明度
   * @param {string} layerId 图层ID
   * @param {number} opacity 不透明度值 (0-1)
   */
  setLayerOpacity(layerId, opacity) {
    // 直接创建和执行命令
    const command = new SetLayerOpacityCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: layerId,
      opacity: opacity,
    });

    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }

    // 更新图层对象不透明度
    const layer = this.layers.value.find((layer) => layer.id === layerId);
    if (layer && layer.fabricObjects) {
      layer.fabricObjects.forEach((obj) => {
        obj.opacity = opacity;
      });
      this.canvas.renderAll();
    }
  }

  /**
   * 设置图层混合模式
   * @param {string} layerId 图层ID
   * @param {string} blendMode 混合模式
   */
  setLayerBlendMode(layerId, blendMode) {
    // 直接创建和执行命令
    const command = new SetLayerBlendModeCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: layerId,
      blendMode: blendMode,
    });

    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }

    // 更新图层对象混合模式
    const layer = this.layers.value.find((layer) => layer.id === layerId);
    if (layer && layer.fabricObjects) {
      layer.fabricObjects.forEach((obj) => {
        obj.globalCompositeOperation = blendMode;
      });
      this.canvas.renderAll();
    }
  }

  /**
   * 重命名图层
   * @param {string} layerId 图层ID
   * @param {string} newName 新名称
   */
  renameLayer(layerId, newName) {
    // 直接创建和执行命令
    const command = new RenameLayerCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: layerId,
      newName: newName,
    });

    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }

    // 更新图层对象上的图层名称
    const layer = this.layers.value.find((layer) => layer.id === layerId);
    if (layer && layer.fabricObjects) {
      layer.fabricObjects.forEach((obj) => {
        obj.layerName = newName;
      });
    }
  }

  /**
   * 合并多个图层
   * @param {Array<string>} layerIds 要合并的图层ID数组
   * @param {string} newName 合并后的图层名称，可选
   * @returns {string} 合并后的新图层ID
   */
  mergeLayers(layerIds, newName = null) {
    // 检查参数
    if (!layerIds || !Array.isArray(layerIds) || layerIds.length < 2) {
      console.error("合并图层至少需要两个图层ID");
      return null;
    }

    // 直接创建和执行命令
    const command = new MergeLayersCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerIds: layerIds,
      newName: newName,
    });

    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }

    return command.newLayerId;
  }

  /**
   * 将多个图层组合为一个组
   * @param {Array<string>} layerIds 要组合的图层ID数组
   * @param {string} groupName 组名称，可选
   * @returns {string} 新组图层ID
   */
  async groupLayers(layerIds, groupName = null) {
    // 检查参数
    if (!layerIds || !Array.isArray(layerIds) || layerIds.length < 2) {
      console.error("组合图层至少需要两个图层ID");
      return null;
    }

    // 直接创建和执行命令
    const command = new GroupLayersCommand({
      canvas: this.canvas,
      layers: this.layers,
      activeLayerId: this.activeLayerId,
      layerIds: layerIds,
      groupName: groupName,
    });

    // 执行命令
    if (this.commandManager) {
      return await this.commandManager.execute(command);
    } else {
      return await command.execute();
    }
  }

  /**
   * 解组一个组图层
   * @param {string} groupId 要解组的组图层ID
   * @returns {Array<string>} 解组后的图层ID数组
   */
  async ungroupLayers(groupId) {
    // 查找组图层
    const groupLayer = this.layers.value.find((l) => l.id === groupId);
    if (
      !groupLayer ||
      !groupLayer.children ||
      groupLayer.children.length === 0
    ) {
      console.error(`${groupId} 不是有效的组图层或不包含子图层`);
      return null;
    }

    // 直接创建和执行命令
    const command = new UngroupLayersCommand({
      canvas: this.canvas,
      layers: this.layers,
      groupId: groupId,
      activeLayerId: this.activeLayerId,
    });

    // 执行命令
    if (this.commandManager) {
      return await this.commandManager.execute(command);
    } else {
      return await command.execute();
    }
  }

  /**
   * 调整画布和背景图层尺寸
   * @param {number} width 宽度
   * @param {number} height 高度
   */
  resizeCanvas(width, height, options = {}) {
    // 直接创建和执行命令
    const command = new BackgroundSizeCommand({
      canvas: this.canvas,
      layers: this.layers,
      canvasManager: this.canvasManager,
      newWidth: width,
      newHeight: height,
      isRedGreenMode: this.isInRedGreenMode(), // 传递红绿图模式状态
    });

    command.undoable = options.undoable; // 设置为可撤销
    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }

    // 更新存储的尺寸
    this.canvasWidth = width;
    this.canvasHeight = height;
  }

  /**
   * 调整背景大小并等比缩放所有其他元素
   * @param {number} width 宽度
   * @param {number} height 高度
   */
  resizeCanvasWithScale(width, height, options = {}) {
    // 检查是否有除背景层外的其他元素
    const hasOtherElements = this.canvas
      .getObjects()
      .some((obj) => !obj.isBackground);

    if (hasOtherElements) {
      // 有其他元素时使用带缩放的命令
      const command = new BackgroundSizeWithScaleCommand({
        canvas: this.canvas,
        layers: this.layers,
        canvasManager: this.canvasManager,
        newWidth: width,
        newHeight: height,
        isRedGreenMode: this.isInRedGreenMode(), // 传递红绿图模式状态
      });

      command.undoable = false; // 设置为可撤销
      // 执行命令
      if (this.commandManager) {
        this.commandManager.execute(command);
      } else {
        command.execute();
      }
    } else {
      // 没有其他元素时使用普通的背景尺寸调整命令
      this.resizeCanvas(width, height, options);
    }

    // 更新存储的尺寸
    this.canvasWidth = width;
    this.canvasHeight = height;
  }

  /**
   * 排序图层，确保图层顺序: 普通图层 > 固定图层 > 背景图层
   */
  sortLayers() {
    // 对图层进行排序：背景图层在最底层（数组最后），固定图层在中间
    this.layers.value.sort((a, b) => {
      // 如果a是背景图层，它应该排在后面（最底层）
      if (a.isBackground) return 1;
      // 如果b是背景图层，它应该排在后面（最底层）
      if (b.isBackground) return -1;

      // 如果a是固定图层而b不是固定图层，a应该排在后面（固定图层在普通图层下方）
      if (a.isFixed && !b.isFixed) return 1;
      // 如果b是固定图层而a不是固定图层，b应该排在后面（固定图层在普通图层下方）
      if (b.isFixed && !a.isFixed) return -1;

      // 其他情况保持原有顺序
      return 0;
    });

    // 更新画布对象顺序
    this._rearrangeObjects();
  }

  /**
   * 重新排列画布上的对象以匹配图层顺序
   * @private
   */
  _rearrangeObjects() {
    if (this.layerSort) {
      // 使用LayerSort的高级排序
      this.layerSort.rearrangeObjects();
      return;
    }

    // 传统排序逻辑（保持原有逻辑作为备用）
    if (!this.canvas) return;

    // 获取画布上的所有对象
    const canvasObjects = [
      ...this.canvas.getObjects(["id", "layerId", "layerName"]),
    ];

    // 清空画布
    this.canvas.clear();

    // 按图层顺序(从底到顶)重新添加对象
    // 注意：图层数组是从顶到底的顺序，需要反向遍历
    for (let i = this.layers.value.length - 1; i >= 0; i--) {
      const layer = this.layers.value[i];

      // 跳过不可见图层
      if (!layer.visible) continue;

      if (layer.isBackground && layer.fabricObject) {
        // 背景图层
        const originalObj = canvasObjects.find(
          (o) => o.id === layer.fabricObject.id
        );
        if (originalObj) {
          this.canvas.add(originalObj);
        } else {
          this.canvas.add(layer.fabricObject);
        }
      } else if (
        layer.isFixed &&
        layer.fabricObjects &&
        layer.fabricObjects.length > 0
      ) {
        // 固定图层
        layer.fabricObjects.forEach((obj) => {
          const originalObj = canvasObjects.find((o) => o.id === obj.id);
          if (originalObj) {
            this.canvas.add(originalObj);
          } else {
            this.canvas.add(obj);
          }
        });
      } else if (
        Array.isArray(layer.fabricObjects) &&
        layer.fabricObjects.length > 0
      ) {
        // 普通图层，添加所有fabricObjects
        layer.fabricObjects.forEach((obj) => {
          const originalObj = canvasObjects.find((o) => o.id === obj.id);
          if (originalObj) {
            this.canvas.add(originalObj);
          } else {
            this.canvas.add(obj);
          }
        });
      }
    }
  }

  /**
   * 同步画布对象到图层数据
   * 确保画布上的对象和图层数据一致
   */
  syncCanvasToLayers() {
    if (!this.canvas) return;

    // 获取画布上的所有对象
    const canvasObjects = this.canvas.getObjects();

    // 遍历所有图层
    this.layers.value.forEach((layer) => {
      if (layer.isBackground) {
        // 背景图层处理
        if (layer.fabricObject) {
          const existsOnCanvas = canvasObjects.some(
            (obj) => obj.id === layer.fabricObject.id
          );
          if (!existsOnCanvas) {
            this.canvas.add(layer.fabricObject);
          }
        }
      } else if (Array.isArray(layer.fabricObjects)) {
        // 更新图层中的对象列表
        const updatedObjects = [];

        // 处理已有对象
        layer.fabricObjects.forEach((obj) => {
          const canvasObj = canvasObjects.find((cObj) => cObj.id === obj.id);
          if (canvasObj) {
            updatedObjects.push(canvasObj);
          } else {
            // 对象不在画布上，添加到画布
            this.canvas.add(obj);
            updatedObjects.push(obj);
          }
        });

        // 检查是否有新对象需要添加到图层
        canvasObjects.forEach((canvasObj) => {
          if (
            canvasObj.layerId === layer.id &&
            !updatedObjects.some((obj) => obj.id === canvasObj.id)
          ) {
            updatedObjects.push(canvasObj);
          }
        });

        // 更新图层的对象列表
        layer.fabricObjects = updatedObjects;
      }
    });

    // 重新排列对象以匹配图层顺序
    this._rearrangeObjects();
  }

  /**
   * 导出当前图层数据
   * @returns {Object} 图层数据对象
   */
  exportLayersData() {
    // 深拷贝图层数据，避免修改原始数据
    const layersData = JSON.parse(JSON.stringify(this.layers.value));

    // 移除无法序列化的属性
    layersData.forEach((layer) => {
      if (layer.fabricObjects) {
        // 序列化对象
        layer.serializedObjects = layer.fabricObjects
          .map((obj) => {
            if (typeof obj.toObject === "function") {
              return obj.toObject(["id", "layerId", "layerName"]);
            }
            return null;
          })
          .filter(Boolean);

        // 删除原始对象引用
        delete layer.fabricObjects;
      }

      if (layer.fabricObject) {
        layer.serializedBackgroundObject =
          typeof layer.fabricObject.toObject === "function"
            ? layer.fabricObject.toObject(["id", "layerId", "layerName"])
            : null;

        delete layer.fabricObject;
      }
    });

    return {
      layers: layersData,
      activeLayerId: this.activeLayerId.value,
      canvasWidth: this.canvasWidth,
      canvasHeight: this.canvasHeight,
      backgroundColor: this.backgroundColor.value,
      editorMode: this.editorMode,
    };
  }

  /**
   * 获取当前图层序列化对象
   * @param {Object} layer 图层对象
   * @returns {Array} 图层中的序列化对象列表
   */
  getCurrLayerSerializedObjects(layer) {
    if (!layer || layer?.fabricObjects?.length === 0) {
      return [];
    }
    // 序列化图层中的对象
    return layer.fabricObjects
      .map((obj) => {
        const { object } = findObjectById(this.canvas, obj.id);
        if (object) return object.toObject(["id", "layerId", "layerName"]);
        return false;
      })
      .filter(Boolean);
  }

  /**
   * 复制图层数据到剪贴板
   * @param {string} layerId 要复制的图层ID
   * @returns {Object} 复制的图层数据
   */
  copyLayer(layerId) {
    const { layer } = findLayerRecursively(this.layers.value, layerId);
    if (!layer) {
      console.error(`图层 ${layerId} 不存在`);
      return null;
    }

    // 不允许复制背景图层
    if (layer.isBackground) {
      console.warn("不能复制背景图层");
      return null;
    }

    // 序列化图层对象
    const layerCopy = JSON.parse(JSON.stringify(layer));

    // 序列化fabricObjects数组
    if (layer.fabricObjects && layer.fabricObjects.length > 0) {
      layerCopy.serializedObjects = this.getCurrLayerSerializedObjects(layer);
    }

    //  处理子图层
    if (layer?.children?.length) {
      layerCopy.children = layer.children.map((child) => {
        const childCopy = JSON.parse(JSON.stringify(child));
        if (child.fabricObjects && child.fabricObjects.length > 0) {
          childCopy.serializedObjects =
            this.getCurrLayerSerializedObjects(child);
        }
        return childCopy;
      });
    }

    // 存储到剪贴板
    this.clipboardData = layerCopy;
	const input = document.createElement("input");
    input.value = "aida_copy_canvas_layer: " + layer.name;
    document.body.appendChild(input);
    input.select();
    document.execCommand("copy");
    document.body.removeChild(input);
    console.log(`已复制图层：${layer.name}`);

    return this.clipboardData;
  }

  /**
   * 剪切图层数据到剪贴板
   * @param {string} layerId 要剪切的图层ID
   * @returns {Object} 剪切的图层数据
   */
  cutLayer(layerId) {
    const layer = this.layers.value.find((l) => l.id === layerId);
    if (!layer) {
      console.error(`图层 ${layerId} 不存在`);
      return null;
    }

    // 不允许剪切背景图层
    if (layer.isBackground) {
      console.warn("不能剪切背景图层");
      return null;
    }

    // 检查是否是唯一的普通图层
    const normalLayers = this.layers.value.filter((l) => !l.isBackground && !l.isFixed);
	console.log("普通图层:", normalLayers)
    if (normalLayers.length === 1) {
      console.warn("不能剪切唯一的普通图层");
      return null;
    }

    // 序列化图层对象
    const layerCopy = JSON.parse(JSON.stringify(layer));

    // 序列化fabricObjects数组
    if (layer.fabricObjects && layer.fabricObjects.length > 0) {
      layerCopy.serializedObjects = layer.fabricObjects
        .map((obj) =>
          typeof obj.toObject === "function"
            ? obj.toObject(["id", "layerId", "layerName"])
            : null
        )
        .filter(Boolean);
    }

    // 存储到剪贴板
    this.clipboardData = layerCopy;

    // 记录是剪切操作，用于粘贴时的处理
    this.clipboardData.isCut = true;

    // 从画布中移除图层中的所有对象
    if (layer.fabricObjects && layer.fabricObjects.length > 0) {
      layer.fabricObjects.forEach((obj) => {
        this.canvas.remove(obj);
      });
    }

    // 如果剪切的是当前活动图层，需要切换到其他图层
    if (this.activeLayerId.value === layerId) {
      // 查找下一个可用的图层
      const nextLayer = this._findNextAvailableLayer(layerId);
      if (nextLayer) {
        this.setActiveLayer(nextLayer.id);
      }
    }

    // 直接创建和执行命令
    const command = new RemoveLayerCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: layerId,
      activeLayerId: this.activeLayerId,
    });

    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }

    // 更新对象交互性
    this.updateLayersObjectsInteractivity();

    console.log(`已剪切图层：${layer.name}`);

    return this.clipboardData;
  }

  /**
   * 粘贴图层
   * @returns {string} 新创建的图层ID
   */
  /**
   * 粘贴图层
   * @returns {string} 新创建的图层ID
   */
  async pasteLayer(event) {
	console.log("剪贴板数据:", this.clipboardData,event);
    if (!this.clipboardData) {
      console.error("剪贴板中没有图层数据");
      return null;
    }

    // 创建粘贴图层命令
    const command = new PasteLayerCommand({
      canvas: this.canvas,
      layers: this.layers,
      activeLayerId: this.activeLayerId,
      clipboardData: this.clipboardData,
      layerManager: this, // 传递LayerManager实例
    });

    // 设置命令为可撤销
    command.undoable = true;
    if (this.commandManager) {
      // 使用命令管理器执行命令
      const result = await this.commandManager.execute(command);
      this.clipboardData = null; // 清空剪贴板数据  复制一次
      // 执行命令
      return result;
    }

    const result = await command.execute();
    this.clipboardData = null; // 清空剪贴板数据  复制一次就清空，避免重复粘贴   出现 错误后也清空  总之就是清空  不用给自己找麻烦
    // 执行命令
    return result;
  }

  /**
   * 选择所有图层
   */
  selectAll() {
    // 直接创建和执行命令
    const command = new SelectAllLayersCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerManager: this,
      activeLayerId: this.activeLayerId,
      editorMode: this.editorMode,
    });
    command.undoable = false; // 设置为不可撤销
    // 执行命令
    command?.execute?.();
  }

  /**
   * 清除当前选择
   */
  clearSelection() {
    // 直接创建和执行命令
    const command = new ClearSelectionCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerManager: this,
      activeLayerId: this.activeLayerId,
      editorMode: this.editorMode,
    });
    command.undoable = false; // 设置为不可撤销
    // 执行命令
    command?.execute?.();
  }

  /**
   * 查找下一个可用的图层（非背景、非锁定）
   * @param {string} excludeLayerId 要排除的图层ID
   * @returns {Object|null} 下一个可用的图层
   * @private
   */
  _findNextAvailableLayer(excludeLayerId) {
    // 查找第一个非背景、非锁定的图层，排除指定的图层
    return (
      this.layers.value.find(
        (layer) =>
          layer.id !== excludeLayerId && !layer.isBackground && !layer.locked
      ) || null
    );
  }

  /**
   * 获取活动图层上方的插入索引
   * @returns {number} 插入索引
   * @private
   */
  _getInsertIndexAboveActiveLayer() {
    if (!this.activeLayerId.value) return 0;

    const activeLayerIndex = this.layers.value.findIndex(
      (layer) => layer.id === this.activeLayerId.value
    );

    return activeLayerIndex !== -1 ? activeLayerIndex : 0;
  }

  /**
   * 保存画布状态
   * 现在统一通过命令管理器的智能状态保存
   */
  saveCanvasState() {
    if (this.commandManager) {
      // 使用智能状态保存，避免不必要的状态保存
      this.commandManager.saveStateIfNeeded({
        name: "图层状态更新",
        stateType: "full",
      });
    }
  }

  /**
   * 执行带状态保存的操作
   * 统一的状态管理入口
   */
  executeWithState(operation, name = "图层操作") {
    if (this.commandManager) {
      return this.commandManager.executeWithState(operation, {
        name,
        stateType: "full",
      });
    } else {
      // 降级处理
      return typeof operation === "function" ? operation() : operation;
    }
  }

  /**
   * 批量执行图层操作
   */
  batchExecute(operations, name = "批量图层操作") {
    if (this.commandManager) {
      return this.commandManager.batch(operations, name);
    } else {
      // 降级处理
      const results = [];
      for (const operation of operations) {
        results.push(typeof operation === "function" ? operation() : operation);
      }
      return results;
    }
  }

  /**
   * 清理画布，移除所有图层
   */
  clearCanvas() {
    // 清空画布
    this.canvas.clear();

    // 清空图层列表
    this.layers.value = [];

    // 重新初始化基本图层
    this.initializeLayers();

    console.log("已清空画布");
  }

  /**
   * 合并图层内的对象为单一图像
   * @param {string} layerId 图层ID，默认使用当前活动图层
   * @param {fabric.Image} newImage 要合并的新图像（可选）
   * @returns {Promise<string>} 合并后的图像ID
   */
  async mergeLayerObjects(activeLayer, fabricImage = null) {
    if (!activeLayer) {
      console.error(`活动图层不存在`);
      return null;
    }

    // 直接创建和执行命令
    const command = new MergeLayerObjectsCommand({
      canvas: this.canvas,
      layers: this.layers,
      fabricImage,
      activeLayer,
    });

    // 执行命令
    return command;
  }

  /**
   * 合并图层内对象成组的命令
   * 将新的图像与图层内现有对象合并为一个组对象
   * 注意：此命令与 MergeLayerObjectsCommand 类似，但它创建一个组而不是单个图像对象
   */
  async LayerObjectsToGroup(activeLayer, fabricImage = null) {
    // 检查活动图层是否存在
    if (!activeLayer) {
      console.error(`活动图层不存在`);
      return null;
    }
    // 直接创建和执行命令
    const command = new LayerObjectsToGroupCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerManager: this,
      fabricImage,
      activeLayer,
    });

    // 执行命令
    return command;
  }

  /**
   * 更新背景图层颜色
   * @param {string} backgroundColor 背景颜色
   */
  updateBackgroundColor(backgroundColor, options = {}) {
    const backgroundLayer = this.layers.value.find(
      (layer) => layer.isBackground
    );

    if (!backgroundLayer) {
      console.warn("没有找到背景图层");
      return;
    }

    // 直接创建和执行命令
    const command = new UpdateBackgroundCommand({
      canvas: this.canvas,
      layers: this.layers,
      canvasManager: this.canvasManager,
      layerManger: this,
      backgroundColor,
      backgroundColorValue: this.backgroundColor,
      oldColor: options.oldColor,
    });

    command.undoable = isBoolean(options.undoable) ? options.undoable : true; // 设置为可撤销

    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }
  }

  /**
   * 获取图层缩略图
   * @param {string} layerId 图层ID
   * @param {number} width 缩略图宽度
   * @param {number} height 缩略图高度
   * @returns {string} Base64编码的缩略图
   */
  getLayerThumbnail(layerId, width = 100, height = 100) {
    const layer = this.getLayerById(layerId);
    if (!layer) {
      console.error(`图层 ${layerId} 不存在`);
      return null;
    }

    // 创建临时画布
    const tempCanvas = document.createElement("canvas");
    tempCanvas.width = width;
    tempCanvas.height = height;
    const ctx = tempCanvas.getContext("2d");

    // 设置背景色
    ctx.fillStyle = "#ffffff";
    ctx.fillRect(0, 0, width, height);

    try {
      if (layer.isBackground && layer.fabricObject) {
        // 背景图层
        const bgObj = layer.fabricObject;
        if (bgObj.toCanvasElement) {
          const element = bgObj.toCanvasElement();
          ctx.drawImage(element, 0, 0, width, height);
        }
      } else if (layer.fabricObjects && layer.fabricObjects.length > 0) {
        // 普通图层
        layer.fabricObjects.forEach((obj) => {
          if (obj.toCanvasElement) {
            const element = obj.toCanvasElement();
            const scaleX = width / this.canvasWidth;
            const scaleY = height / this.canvasHeight;

            ctx.save();
            ctx.scale(scaleX, scaleY);
            ctx.drawImage(element, obj.left || 0, obj.top || 0);
            ctx.restore();
          }
        });
      }

      return tempCanvas.toDataURL();
    } catch (error) {
      console.error("生成图层缩略图失败:", error);
      return null;
    }
  }

  /**
   * 检查图层是否为空
   * @param {string} layerId 图层ID
   * @returns {boolean} 是否为空图层
   */
  isLayerEmpty(layerId) {
    const layer = this.getLayerById(layerId);
    if (!layer) return true;

    if (layer.isBackground) {
      return !layer.fabricObject;
    }

    return !layer.fabricObjects || layer.fabricObjects.length === 0;
  }

  /**
   * 获取图层统计信息
   * @returns {Object} 图层统计信息
   */
  getLayerStats() {
    const stats = {
      totalLayers: this.layers.value.length,
      backgroundLayers: 0,
      normalLayers: 0,
      lockedLayers: 0,
      hiddenLayers: 0,
      emptyLayers: 0,
      totalObjects: 0,
    };

    this.layers.value.forEach((layer) => {
      if (layer.isBackground) {
        stats.backgroundLayers++;
        if (layer.fabricObject) {
          stats.totalObjects++;
        }
      } else {
        stats.normalLayers++;
        if (layer.fabricObjects) {
          stats.totalObjects += layer.fabricObjects.length;
        }
      }

      if (layer.locked) stats.lockedLayers++;
      if (!layer.visible) stats.hiddenLayers++;
      if (this.isLayerEmpty(layer.id)) stats.emptyLayers++;
    });

    return stats;
  }

  /**
   * 清理空图层
   * @returns {Array<string>} 被清理的图层ID数组
   */
  cleanupEmptyLayers() {
    const emptyLayerIds = [];

    // 找出所有空的非背景图层
    this.layers.value.forEach((layer) => {
      if (!layer.isBackground && this.isLayerEmpty(layer.id)) {
        emptyLayerIds.push(layer.id);
      }
    });

    // 删除空图层
    emptyLayerIds.forEach((layerId) => {
      this.removeLayer(layerId);
    });

    if (emptyLayerIds.length > 0) {
      console.log(`已清理 ${emptyLayerIds.length} 个空图层`);
    }

    return emptyLayerIds;
  }

  /**
   * 销毁图层管理器
   * 清理所有引用和事件监听器
   */
  dispose() {
    // 清空画布
    if (this.canvas) {
      this.canvas.clear();
    }

    // 清空图层数据
    if (this.layers && this.layers.value) {
      this.layers.value = [];
    }

    // 清空剪贴板
    this.clipboardData = null;

    // 清除引用
    this.canvas = null;
    this.layers = null;
    this.activeLayerId = null;
    this.commandManager = null;
    this.canvasManager = null;
    this.toolManager = null;

    console.log("LayerManager 已销毁");
  }

  /**
   * 创建文本图层并添加文本对象
   * @param {Object} textObject Fabric文本对象
   * @param {Object} options 文本选项
   * @returns {Object} 创建的文本对象
   */
  async createTextLayerWithObject(textObject, options = {}) {
    if (!this.canvas || !textObject) return null;

    // 确保对象有ID
    textObject.id =
      textObject.id || `text_${Date.now()}_${Math.floor(Math.random() * 1000)}`;

    // 创建文本图层
    const layerName = options.name || "文本图层";
    const layerId = await this.createLayer(layerName, LayerType.TEXT, {
      layerProperties: {
        text: options.text || textObject.text || "新文本",
        fontFamily: options.fontFamily || textObject.fontFamily || "Arial",
        fontSize: options.fontSize || textObject.fontSize || 24,
        fontWeight: options.fontWeight || textObject.fontWeight || "normal",
        fontStyle: options.fontStyle || textObject.fontStyle || "normal",
        textAlign: options.textAlign || textObject.textAlign || "left",
        underline: options.underline || textObject.underline || false,
        linethrough: options.linethrough || textObject.linethrough || false,
        overline: options.overline || textObject.overline || false,
        fill: options.fill || textObject.fill || "#000000",
        textBackgroundColor:
          options.textBackgroundColor ||
          textObject.textBackgroundColor ||
          "transparent",
        lineHeight: options.lineHeight || textObject.lineHeight || 1.16,
        charSpacing: options.charSpacing || textObject.charSpacing || 0,
      },
    });

    // 把对象添加到新图层
    textObject.layerId = layerId;
    textObject.layerName = layerName;

    // 添加到画布，如果还未添加
    const isOnCanvas = this.canvas
      .getObjects()
      .some((obj) => obj.id === textObject.id);
    if (!isOnCanvas) {
      this.canvas.add(textObject);
    }

    // 更新图层中的对象列表
    const layer = this.getLayerById(layerId);
    if (layer) {
      layer.fabricObjects = layer.fabricObjects || [];
      layer.fabricObjects.push(
        textObject.toObject(["id", "layerId", "layerName"])
      );
    }

    // 设置此图层为活动图层
    this.setActiveLayer(layerId);

    // 更新交互性
    this.updateLayersObjectsInteractivity();

    return textObject;
  }

  /**
   * 根据fabric对象查找所属图层
   * @param {Object} fabricObject fabric对象
   * @returns {Object|null} 图层对象或null
   */
  findLayerByObject(fabricObject) {
    if (!fabricObject || !fabricObject.id) {
      return null;
    }

    // 遍历所有图层查找包含该对象的图层
    for (const layer of this.layers.value) {
      // 检查背景图层
      if (layer.isBackground && layer.fabricObject) {
        if (layer.fabricObject.id === fabricObject.id) {
          return layer;
        }
      }

      // 检查普通图层
      if (layer.fabricObjects && Array.isArray(layer.fabricObjects)) {
        const foundObject = layer.fabricObjects.find(
          (obj) => obj.id === fabricObject.id
        );
        if (foundObject) {
          return layer;
        }
      }
    }

    return null;
  }

  /**
   * 拖拽排序图层
   * @param {number} oldIndex 原索引
   * @param {number} newIndex 新索引
   * @param {string} layerId 图层ID
   * @returns {boolean} 是否排序成功
   */
  async reorderLayers(oldIndex, newIndex, layerId) {
    // 检查索引有效性
    if (
      oldIndex < 0 ||
      newIndex < 0 ||
      oldIndex >= this.layers.value.length ||
      newIndex >= this.layers.value.length
    ) {
      console.warn("图层排序索引无效");
      return false;
    }

    // 检查是否是同一位置
    if (oldIndex === newIndex) {
      return true;
    }

    // 获取要移动的图层
    const layer = this.layers.value[oldIndex];
    if (!layer || layer.id !== layerId) {
      console.warn("图层ID与索引不匹配");
      return false;
    }

    // 检查是否是背景层或固定层（不允许排序）
    if (layer.isBackground || layer.isFixed) {
      console.warn("背景层和固定层不能参与排序");
      return false;
    }

    // 检查目标位置是否合法（不能移到背景层或固定层的位置）
    const targetLayer = this.layers.value[newIndex];
    if (targetLayer && (targetLayer.isBackground || targetLayer.isFixed)) {
      console.warn("不能移动到背景层或固定层的位置");
      return false;
    }

    // 创建并执行拖拽排序命令
    const command = new ReorderLayersCommand({
      layers: this.layers,
      oldIndex: oldIndex,
      newIndex: newIndex,
      layerId: layerId,
      canvas: this.canvas,
      layerSort: this.layerSort,
    });

    // 执行命令
    if (this.commandManager) {
      return await this.commandManager.execute(command);
    } else {
      return await command.execute();
    }
  }

  /**
   * 拖拽排序子图层
   * @param {string} parentId 父图层ID
   * @param {number} oldIndex 原索引
   * @param {number} newIndex 新索引
   * @param {string} layerId 子图层ID
   * @returns {boolean} 是否排序成功
   */
  reorderChildLayers(parentId, oldIndex, newIndex, layerId) {
    return this.layerSort?.reorderChildLayers(
      parentId,
      oldIndex,
      newIndex,
      layerId
    );
  }

  /**
   * 根据图层ID和父图层ID查找子图层
   * @param {string} layerId 子图层ID
   * @param {string} parentId 父图层ID
   * @returns {Object|null} 子图层对象或null
   */
  findChildLayer(layerId, parentId) {
    const parentLayer = this.getLayerById(parentId);
    if (!parentLayer || !parentLayer.children) return null;

    return parentLayer.children.find((child) => child.id === layerId) || null;
  }

  /**
   * 删除子图层
   * @param {string} layerId 子图层ID
   * @param {string} parentId 父图层ID
   * @returns {boolean} 是否删除成功
   */
  async removeChildLayer(layerId, parentId) {
    // 直接创建和执行命令
    const command = new RemoveChildLayerCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: layerId,
      parentId: parentId,
      activeLayerId: this.activeLayerId,
      layerManager: this,
    });

    // 执行命令
    if (this.commandManager) {
      return await this.commandManager.execute(command);
    } else {
      return await command.execute();
    }
  }

  /**
   * 重命名子图层
   * @param {string} layerId 子图层ID
   * @param {string} parentId 父图层ID
   * @param {string} newName 新名称
   */
  renameChildLayer(layerId, parentId, newName) {
    // 直接创建和执行命令
    const command = new RenameChildLayerCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: layerId,
      parentId: parentId,
      newName: newName,
    });

    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }
  }

  /**
   * 切换子图层锁定状态
   * @param {string} layerId 子图层ID
   * @param {string} parentId 父图层ID
   * @returns {boolean} 更新后的锁定状态
   */
  toggleChildLayerLock(layerId, parentId) {
    // 直接创建和执行命令
    const command = new ChildLayerLockCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: layerId,
      parentId: parentId,
      layerManager: this,
    });

    // 执行命令
    if (this.commandManager) {
      this.commandManager.execute(command);
    } else {
      command.execute();
    }

    // 更新对象交互性
    this.updateLayersObjectsInteractivity();

    // 获取当前锁定状态
    const childLayer = this.findChildLayer(layerId, parentId);
    return childLayer ? childLayer.locked : false;
  }

  /**
   * 切换子图层可见性
   * @param {string} layerId 子图层ID
   * @param {string} parentId 父图层ID
   * @returns {boolean} 更新后的可见性状态
   */
  async toggleChildLayerVisibility(layerId, parentId) {
    // 直接创建和执行命令
    const command = new ToggleChildLayerVisibilityCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: layerId,
      parentId: parentId,
      layerManager: this,
    });

    // 执行命令
    if (this.commandManager) {
      return await this.commandManager.execute(command);
    } else {
      return await command.execute();
    }
  }

  // ==================== 红绿图模式相关操作 ====================

  // 设置红绿图模式管理器
  setRedGreenModeManager(redGreenModeManager) {
    this.redGreenModeManager = redGreenModeManager;
  }

  // 启用红绿图模式
  enableRedGreenMode() {
    this.isRedGreenMode = true;
    console.log("图层管理器：红绿图模式已启用");
  }

  // 禁用红绿图模式
  disableRedGreenMode() {
    this.isRedGreenMode = false;
    console.log("图层管理器：红绿图模式已禁用");
  }

  // 检查是否为红绿图模式
  isInRedGreenMode() {
    return this.isRedGreenMode;
  }

  // 检查背景图层是否需要跟随画布大小变化（红绿图模式下）
  shouldBackgroundFollowCanvasSize() {
    return this.isRedGreenMode;
  }

  // 在红绿图模式下创建图层 - 限制功能
  createLayerInRedGreenMode() {
    console.warn("红绿图模式下不支持创建新图层");
    return null;
  }

  // 在红绿图模式下移除图层 - 限制功能
  removeLayerInRedGreenMode(layerId) {
    console.warn("红绿图模式下不支持删除图层");
    return false;
  }

  // ==================== 高级图层排序功能 ====================

  /**
   * 使用LayerSort工具重新排列画布对象
   * 这是页面操作排序图层后重建画布顺序的核心方法
   * @param {boolean} async 是否使用异步处理，默认根据对象数量自动决定
   * @returns {Promise<void>|void} 如果使用异步则返回Promise
   */
  rearrangeCanvasObjects(async = null) {
    if (!this.layerSort) {
      console.warn("图层排序工具未初始化，使用传统排序方法");
      this._rearrangeObjects();
      return;
    }

    // 检查是否需要异步处理
    const objectsCount = this.canvas?.getObjects()?.length || 0;
    const layersCount = this.layers?.value?.length || 0;

    const shouldUseAsync =
      async !== null
        ? async
        : LayerSortUtils.shouldUseAsyncProcessing(objectsCount, layersCount);

    if (shouldUseAsync) {
      console.log(
        `使用异步排序处理 ${objectsCount} 个对象, ${layersCount} 个图层`
      );
      return this.layerSort.rearrangeObjectsAsync();
    } else {
      console.log(
        `使用同步排序处理 ${objectsCount} 个对象, ${layersCount} 个图层`
      );
      this.layerSort.rearrangeObjects();
    }
  }

  /**
   * 智能排序图层
   * 根据对象类型和位置自动调整图层顺序
   * @param {Array<string>} targetLayerIds 要排序的图层ID数组，null表示排序所有普通图层
   * @returns {boolean} 是否排序成功
   */
  smartSortLayers(targetLayerIds = null) {
    if (!this.layerSort) {
      console.warn("图层排序工具未初始化");
      return false;
    }

    const result = this.layerSort.smartSort(targetLayerIds);

    if (result) {
      console.log("智能排序完成");
      // 更新对象交互性
      this.updateLayersObjectsInteractivity();
    }

    return result;
  }

  /**
   * 优化图层结构
   * 清理空图层、合并相邻相似图层等
   * @returns {Object} 优化结果统计
   */
  optimizeLayerStructure() {
    if (!this.layerSort) {
      console.warn("图层排序工具未初始化，使用基础清理方法");
      return {
        removedEmptyLayers: this.cleanupEmptyLayers().length,
        mergedLayers: 0,
        reorderedLayers: 0,
      };
    }

    const stats = this.layerSort.optimizeLayerStructure();

    if (stats.removedEmptyLayers > 0 || stats.reorderedLayers > 0) {
      console.log(
        `图层结构优化完成: 清理空图层 ${stats.removedEmptyLayers} 个, 重新排序 ${stats.reorderedLayers} 个图层`
      );
      // 更新对象交互性
      this.updateLayersObjectsInteractivity();
    }

    return stats;
  }

  /**
   * 验证画布对象顺序是否正确
   * @returns {boolean} 顺序是否正确
   */
  validateObjectOrder() {
    if (!this.layerSort) {
      console.warn("图层排序工具未初始化");
      return true; // 无法验证，假设正确
    }

    const isValid = this.layerSort.validateObjectOrder();

    if (!isValid) {
      console.warn("画布对象顺序不正确，建议重新排列");
    }

    return isValid;
  }
  canMoveToTop(layerId) {
    // 检查图层所在索引是否为0
    const layerIndex = this.getLayerIndex(layerId);
    if (layerIndex === -1) {
      console.warn(`图层 ${layerId} 不存在`);
      return false;
    }
    return layerIndex > 0; // 如果索引大于0，则可以移动到顶部
  }

  canMoveToBottom(layerId) {
    // 检查图层所在索引是否为0
    const layerIndex = this.getLayerIndex(layerId);
    if (layerIndex === -1) {
      console.warn(`图层 ${layerId} 不存在`);
      return false;
    }

    const { parent } = findLayerRecursively(this.layers.value, layerId);
    if (parent?.children.length) {
      // 如果是子图层，检查是否有兄弟图层
      return layerIndex < parent.children.length - 1; // 如果不是最后一个子图层，则可以移动到底部
    }
    return layerIndex < this.layers?.value?.length - 3; // 如果索引小于长度 - 3，则可以移动到底部
  }
  /**
   * 移动图层到指定位置
   * 使用LayerSort的高级移动功能
   * @param {string} layerId 要移动的图层ID
   * @param {number} newIndex 新位置索引
   * @returns {boolean} 是否移动成功
   */
  moveLayerToIndex({ parentId, oldIndex, newIndex, layerId }) {
    if (!this.layerSort) {
      console.warn("图层排序工具未初始化，使用基础移动方法");
      return this.moveLayer(
        layerId,
        newIndex > this.getLayerIndex(layerId) ? "down" : "up"
      );
    }

    const result = this.layerSort.moveLayerToIndex({
      parentId,
      oldIndex,
      newIndex,
      layerId,
    });

    if (result) {
      console.log(
        `图层 ${layerId}   - oldIndex: ${oldIndex} 已移动到位置 ${newIndex}`
      );
      // 更新对象交互性
      // this.updateLayersObjectsInteractivity();
    }

    return result;
  }

  /**
   * 获取图层的有效移动范围
   * @param {string} layerId 图层ID
   * @returns {Object} 包含最小和最大索引的对象
   */
  getLayerMoveRange(layerId) {
    if (!this.layerSort) {
      // 基础实现：只能在普通图层范围内移动
      const normalLayers = this.layers.value
        .map((layer, index) => ({ layer, index }))
        .filter((item) => !item.layer.isBackground && !item.layer.isFixed);

      if (normalLayers.length === 0) {
        return { minIndex: -1, maxIndex: -1 };
      }

      return {
        minIndex: normalLayers[0].index,
        maxIndex: normalLayers[normalLayers.length - 1].index,
      };
    }

    return this.layerSort.getLayerMoveRange(layerId);
  }

  /**
   * 获取图层在数组中的索引
   * @param {string} layerId 图层ID
   * @returns {number} 图层索引，-1表示未找到
   */
  getLayerIndex(layerId) {
    if (!layerId) {
      console.warn("未提供图层ID");
      return -1;
    }

    let layerIndex = this.layers.value.findIndex(
      (layer) => layer.id === layerId
    );
    if (layerIndex >= 0) return layerIndex;
    // 如果未找到，尝试在子图层中查找
    const { parent } = findLayerRecursively(this.layers.value, layerId);
    parent?.children?.findIndex((child) => {
      if (child.id === layerId) {
        layerIndex = parent.children.indexOf(child);
        return true; // 找到后停止查找
      }
      return false;
    });
    return layerIndex;
  }

  /**
   * 高级拖拽排序图层
   * 使用LayerSort的专业排序功能
   * @param {number} oldIndex 原索引
   * @param {number} newIndex 新索引
   * @param {string} layerId 图层ID
   * @returns {boolean} 是否排序成功
   */
  advancedReorderLayers(oldIndex, newIndex, layerId) {
    if (!this.layerSort) {
      console.warn("图层排序工具未初始化，使用基础排序方法");
      return this.reorderLayers(oldIndex, newIndex, layerId);
    }

    const result = this.layerSort.reorderLayers(oldIndex, newIndex, layerId);

    if (result) {
      console.log(
        `高级排序完成: 图层 ${layerId} 从位置 ${oldIndex} 移动到 ${newIndex}`
      );
      // 更新对象交互性
      this.updateLayersObjectsInteractivity();
    }

    return result;
  }

  /**
   * 高级拖拽排序子图层
   * @param {string} parentId 父图层ID
   * @param {number} oldIndex 原索引
   * @param {number} newIndex 新索引
   * @param {string} layerId 子图层ID
   * @returns {boolean} 是否排序成功
   */
  advancedReorderChildLayers(parentId, oldIndex, newIndex, layerId) {
    const result = this.reorderChildLayers(
      parentId,
      oldIndex,
      newIndex,
      layerId
    );

    if (result) {
      console.log(
        `高级子图层排序完成: 图层 ${layerId} 在父图层 ${parentId} 中从位置 ${oldIndex} 移动到 ${newIndex}`
      );
      // 重新排列画布对象
      this.rearrangeCanvasObjects();
    }

    return result;
  }

  /**
   * 使用LayerSort工具进行图层排序
   * 这会同时更新图层数组和画布对象顺序
   */
  sortLayersWithTool() {
    if (!this.layerSort) {
      console.warn("图层排序工具未初始化，使用基础排序方法");
      this.sortLayers();
      return;
    }

    // 使用LayerSort工具排序
    this.layers.value = this.layerSort.sortLayers();

    // 重新排列画布对象
    this.rearrangeCanvasObjects();

    console.log("使用LayerSort工具完成图层排序");
  }

  /**
   * 强制重建画布对象顺序
   * 当图层顺序发生变化后调用此方法确保画布对象顺序正确
   */
  forceRebuildCanvasOrder() {
    console.log("强制重建画布对象顺序");

    if (this.layerSort) {
      // 使用LayerSort的高级排序
      this.rearrangeCanvasObjects();
    } else {
      // 使用传统方法
      this._rearrangeObjects();
    }

    // 验证排序结果
    const isValid = this.validateObjectOrder();
    if (!isValid) {
      console.warn("画布对象顺序验证失败，可能需要手动调整");
    }

    // 更新对象交互性
    this.updateLayersObjectsInteractivity();
  }

  /**
   * 批量重新排序多个图层
   * @param {Array} reorderOperations 排序操作数组 [{layerId, oldIndex, newIndex}]
   * @returns {boolean} 是否全部操作成功
   */
  batchReorderLayers(reorderOperations) {
    if (!reorderOperations || !Array.isArray(reorderOperations)) {
      console.error("无效的批量排序操作");
      return false;
    }

    console.log(`开始批量重新排序 ${reorderOperations.length} 个图层`);

    let allSuccessful = true;

    // 暂停渲染以提高性能
    const wasRenderOnAddRemove = this.canvas.renderOnAddRemove;
    this.canvas.renderOnAddRemove = false;

    try {
      // 按照操作顺序执行
      for (const operation of reorderOperations) {
        const { layerId, oldIndex, newIndex } = operation;

        const success = this.layerSort
          ? this.layerSort.reorderLayers(oldIndex, newIndex, layerId)
          : this.reorderLayers(oldIndex, newIndex, layerId);

        if (!success) {
          console.warn(`图层 ${layerId} 排序失败`);
          allSuccessful = false;
        }
      }

      // 重新排列画布对象
      this.rearrangeCanvasObjects();
    } finally {
      // 恢复渲染
      this.canvas.renderOnAddRemove = wasRenderOnAddRemove;
      this.canvas.renderAll();
    }

    if (allSuccessful) {
      console.log("批量图层排序完成");
    } else {
      console.warn("批量图层排序部分失败");
    }

    return allSuccessful;
  }

  /**
   * 合并组图层
   * @param {string} groupId 组图层ID
   * @returns {Array<string>} 所有子图层成组的图层ID
   */
  async mergeGroupLayers(groupId) {
    // 查找组图层
    const groupLayer = this.layers.value.find((l) => l.id === groupId);
    if (
      !groupLayer ||
      !groupLayer.children ||
      groupLayer.children.length === 0
    ) {
      console.warn(this.t("找不到有效的组图层或组图层为空"));
      return [];
    }

    // 直接创建和执行解组命令
    const command = new MergeGroupLayerCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: groupId,
      activeLayerId: this.activeLayerId,
      layerManager: this,
    });

    // 执行命令
    if (this.commandManager) {
      const result = await this.commandManager.execute(command);
      result && console.log(`✅ 成功合并组图层: ${groupLayer.name}`);
      return result;
    } else {
      const result = await command.execute();
      result && console.log(`✅ 成功合并组图层: ${groupLayer.name}`);
      return result || [];
    }
  }

  /**
   * 栅格化图层
   * @param {string} layerId 图层ID，默认使用当前活动图层
   * @returns {Promise<boolean>} 是否栅格化成功
   */
  async rasterizeLayer(layerId = null) {
    const targetLayerId = layerId || this.activeLayerId.value;

    if (!targetLayerId) {
      console.warn(this.t("没有指定要栅格化的图层"));
      return false;
    }

    // 查找目标图层
    // const targetLayer = this.getLayerById(targetLayerId);
    const { layer: targetLayer } = findLayerRecursively(
      this.layers.value,
      targetLayerId
    );

    if (!targetLayer) {
      console.error(this.t("图层不存在", { layerId: targetLayerId }));
      return false;
    }

    // 不允许栅格化背景图层和固定图层
    if (targetLayer.isBackground || targetLayer.isFixed) {
      console.warn(this.t("背景图层和固定图层不能栅格化"));
      return false;
    }

    // 直接创建和执行栅格化命令
    const command = new RasterizeLayerCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: targetLayerId,
      activeLayerId: this.activeLayerId,
      layerManager: this,
    });

    // 执行命令
    if (this.commandManager) {
      const result = await this.commandManager.execute(command);
      if (result) {
        console.log(`✅ 成功栅格化图层: ${targetLayer.name}`);
      }
      return result;
    } else {
      const result = await command.execute();
      if (result) {
        console.log(`✅ 成功栅格化图层: ${targetLayer.name}`);
      }
      return result;
    }
  }

  /**
   * 检查图层是否可以栅格化
   * @param {string} layerId 图层ID
   * @returns {boolean} 是否可以栅格化
   */
  canRasterizeLayer(layerId) {
    const layer = findLayerRecursively(this.layers.value, layerId)?.layer;
    if (!layer) return false;

    // 不允许栅格化背景图层和固定图层
    if (layer.isBackground || layer.isFixed) {
      return false;
    }

    // 检查图层是否有内容可以栅格化
    if (layer.type === "group" || layer.children.length > 0) {
      // 组图层：检查是否有子图层且子图层有内容
      return layer.children.some(
        (child) => child.fabricObjects && child.fabricObjects.length > 0
      );
    } else {
      // 普通图层：检查是否有对象
      return layer.fabricObjects && layer.fabricObjects.length > 0;
    }
  }

  /**
   * 导出图层  -- 下载图层图片
   * @param {string} layerId 图层ID，默认使用当前活动图层
   */
  async exportLayerToImage(layerId = null) {
    const targetLayerId = layerId || this.activeLayerId.value;

    if (!targetLayerId) {
      console.warn(this.t("没有指定要栅格化的图层"));
      return false;
    }

    // 查找目标图层
    // const targetLayer = this.getLayerById(targetLayerId);
    const { layer: targetLayer } = findLayerRecursively(
      this.layers.value,
      targetLayerId
    );

    if (!targetLayer) {
      console.error(this.t("图层不存在", { layerId: targetLayerId }));
      return false;
    }

    // 直接创建和执行导出命令
    const command = new ExportLayerToImageCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: targetLayerId,
      activeLayerId: this.activeLayerId,
      layerManager: this,
    });

    command.undoable = false; // 导出操作通常不需要撤销

    // 执行命令
    if (this.commandManager) {
      const result = await this.commandManager.execute(command);
      if (result) {
        console.log(`✅ 成功导出图层: ${targetLayer.name}`);
      }
      return result;
    } else {
      const result = await command.execute();
      if (result) {
        console.log(`✅ 成功导出图层: ${targetLayer.name}`);
      }
      return result;
    }
  }

  /**
   * 栅格化图层并返回Base64编码
   * @param {string} layerId 图层ID，默认使用当前活动图层
   * @returns {Promise<string|null>} Base64编码的图像字符串，失败时返回null
   */
  async getLayerToBase64(layerId = null) {
    const targetLayerId = layerId || this.activeLayerId.value;
    if (!targetLayerId) {
      console.warn(this.t("没有指定要栅格化的图层"));
      return null;
    }

    // 查找目标图层
    // const targetLayer = this.getLayerById(targetLayerId);
    const { layer: targetLayer } = findLayerRecursively(
      this.layers.value,
      targetLayerId
    );

    if (!targetLayer) {
      console.error(this.t("图层不存在", { layerId: targetLayerId }));
      return null;
    }

    // 直接创建和执行导出命令
    const command = new ExportLayerToImageCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId: targetLayerId,
      activeLayerId: this.activeLayerId,
      layerManager: this,
    });

    command.undoable = false; // 导出操作通常不需要撤销

    // 执行命令
	const result = await command.execute(false);
	if (result) {
	console.log(`✅ 成功导出图层: ${targetLayer.name}`);
	}
	return result;
  }

  /**
   * 为组图层的活动选择组设置遮罩移动同步（修复版）
   * @param {fabric.ActiveSelection} activeSelection 活动选择组
   * @param {Object} layer 组图层对象
   * @private
   */
  _setupGroupMaskMovementSync(activeSelection, layer) {
    if (!activeSelection || !layer || !layer.clippingMask) {
      return;
    }

    // 记录初始位置
    let initialLeft = activeSelection.left;
    let initialTop = activeSelection.top;

    // 记录遮罩初始位置
    let maskInitialLeft = layer.clippingMask.left || 0;
    let maskInitialTop = layer.clippingMask.top || 0;

    // 用于节流和状态管理的变量
    let isUpdating = false;
    let lastUpdateTime = 0;
    let hasMoved = false; // 追踪是否实际发生了移动
    const UPDATE_THRESHOLD = 32; // 约60fps
    // 移动开始事件处理
    const handleMovingStart = (e) => {
      // 判断活动对象是否只有一个
      const isSginleObject = e.target === activeSelection?._objects?.[0];
      if (e.target === activeSelection || isSginleObject) {
        hasMoved = false; // 重置移动状态
        console.log("🎯 开始移动组选择对象");
        // 记录遮罩初始位置
        console.log(
          "🖼️ 记录遮罩初始位置",
          `${layer.clippingMask.left || 0}, ${layer.clippingMask.top || 0}`
        );
        // 记录初始位置
        initialLeft = isSginleObject ? e.target.left : activeSelection.left;
        initialTop = isSginleObject ? e.target.top : activeSelection.top;

        maskInitialLeft = layer.clippingMask.left || 0;
        maskInitialTop = layer.clippingMask.top || 0;
      }
    };
    // 移动中事件处理函数（带节流）
    const handleMoving = (e) => {
      // 判断活动对象是否只有一个
      const isSginleObject = e.target === activeSelection?._objects?.[0];
      const target = e.target;
      if (target === activeSelection || isSginleObject) {
        hasMoved = true; // 标记发生了移动
        const now = Date.now();

        // 节流处理，避免过于频繁的更新
        if (now - lastUpdateTime < UPDATE_THRESHOLD) {
          return;
        }

        if (isUpdating) {
          return;
        }

        isUpdating = true;
        lastUpdateTime = now;

        // 使用 requestAnimationFrame 优化渲染
        requestAnimationFrame(() => {
          try {
            // 计算移动距离
            const deltaX = target.left - initialLeft;
            const deltaY = target.top - initialTop;

            // 创建更新遮罩位置的命令
            const command = new UpdateGroupMaskPositionCommand({
              canvas: this.canvas,
              layerManager: this,
              layers: this.layers,
              layerId: layer.id,
              deltaX: deltaX,
              deltaY: deltaY,
              maskInitialLeft: maskInitialLeft,
              maskInitialTop: maskInitialTop,
              isExecuteRealtime: true,
              isSginleObject,
              target,
            });

            // 执行实时更新
            command.executeRealtime();
          } finally {
            isUpdating = false;
          }
        });
      }
    };

    // 修改事件处理函数 - 使用 object:modified 替代 object:moved
    const handleModified = (e) => {
      const target = e.target;
      // 判断活动对象是否只有一个
      const isSginleObject = e.target === activeSelection?._objects?.[0];
      if (isSginleObject) {
        // 如果是单个对象，不处理
        console.log("🚫 单个对象不处理移动完成");
        hasMoved = false; // 重置移动状态
        return;
      }
      if ((target === activeSelection || isSginleObject) && hasMoved) {
        console.log("✅ 组选择对象移动完成");

        // 计算最终移动距离
        const deltaX = target.left - initialLeft;
        const deltaY = target.top - initialTop;

        // 如果有实际移动，创建可撤销的命令
        if (Math.abs(deltaX) > 0.1 || Math.abs(deltaY) > 0.1) {
          const command = new UpdateGroupMaskPositionCommand({
            canvas: this.canvas,
            layers: this.layers,
            layerManager: this,
            layerId: layer.id,
            deltaX: deltaX,
            deltaY: deltaY,
            maskInitialLeft: maskInitialLeft,
            maskInitialTop: maskInitialTop,
            activeSelection,
            isSginleObject,
            target,
          });

          command.undoable = isSginleObject ? false : true; // 设置为可撤销的命令

          // 执行可撤销的命令
          if (this.commandManager) {
            this.commandManager.execute(command);
          } else {
            command.execute();
          }
        }

        hasMoved = false; // 重置移动状态
      }
    };

    // 鼠标抬起事件处理 - 备用方案
    const handleMouseUp = (e) => {
      if (hasMoved && this.canvas.getActiveObject() === activeSelection) {
        console.log("🖱️ 鼠标抬起 - 备用移动完成处理");
        handleModified(e);
      }
    };

    // 清理事件监听器的函数
    const cleanup = () => {
      this.canvas.off("object:moving", handleMoving);
      this.canvas.off("object:modified", handleModified);
      this.canvas.off("mouse:down", handleMovingStart);
      this.canvas.off("mouse:up", handleMouseUp);
      this.canvas.off("selection:cleared", cleanup);
      this.canvas.off("selection:updated", cleanup);

      console.log("🧹 清理组遮罩移动同步事件监听器");
    };

    // 绑定事件监听器
    this.canvas.on("mouse:down", handleMovingStart);
    this.canvas.on("object:moving", handleMoving);
    this.canvas.on("object:modified", handleModified); // 使用 modified 替代 moved
    this.canvas.on("mouse:up", handleMouseUp); // 备用方案

    // 当选择被清除或更新时清理事件监听器
    this.canvas.on("selection:cleared", cleanup);
    this.canvas.on("selection:updated", cleanup);

    console.log("🎨 已设置组遮罩移动同步 - 使用 object:modified 事件");
  }
}