/**
 * 3D 引擎管理器
 * 负责管理 3D 渲染引擎的初始化、模型加载和测量功能
 */
import { Engine, type EngineOptions, type ModelLoadOptions } from '../components/engine';
import { BaseManager } from '../core/base-manager';
import { RightKeyManager } from './right-key-manager';
import type { MeasureMode } from '../types/measure';
import type { SectionBoxRange } from '../components/section-box-panel/types';
import type { MenuItemConfig } from '../components/menu/item';
import { ManagerRegistry } from '../core/manager-registry';

/**
 * 3D 引擎管理器
 * 封装底层 3D 引擎，提供模型加载、相机控制、测量等功能
 */
export class EngineManager extends BaseManager {
    /** 容器元素 */
    private container: HTMLElement;
    /** 引擎实例 */
    private engineInstance: Engine | null = null;
    /** 右键菜单管理器 */
    public rightKey: RightKeyManager | null = null;

    constructor(container: HTMLElement) {
        super();
        this.container = container;
    }

    /**
     * 初始化 3D 引擎
     * @param options 引擎配置选项
     * @returns 是否初始化成功
     */
    public initialize(options?: Omit<EngineOptions, 'container'>): boolean {
        if (this.engineInstance && this.engineInstance.isInitialized()) {
            console.warn('[EngineManager] 3D Engine already initialized. Destroying old instance...');
            this.engineInstance.destroy();
            this.engineInstance = null;
        }

        try {
            this.engineInstance = new Engine({
                container: this.container,
                ...options,
            });

            this.engineInstance.init();

            this.rightKey = new RightKeyManager(this.container);

            this.rightKey.registerHandler((_e) => {
                const selected = this.getSelectedComponent();
                const items: MenuItemConfig[] = [];

                if (selected) {
                    // 1. 构件详情
                    items.push({
                        id: 'componentDetail',
                        label: 'menu.componentDetail',
                        group: 'component',
                        order: 1,
                        divider: true,
                        onClick: () => {
                            const registry = ManagerRegistry.getInstance();
                            registry.componentDetail?.show();
                            this.rightKey?.hide();
                        }
                    });

                    // 2. 隐藏选中构件
                    items.push({
                        id: 'hideSelected',
                        label: 'menu.hideSelected',
                        group: 'component',
                        order: 2,
                        onClick: () => {
                            console.log('[Menu] 隐藏选中构件 - 暂未实现');
                            this.rightKey?.hide();
                        }
                    });

                    // 3. 半透明选中构件
                    items.push({
                        id: 'transparentSelected',
                        label: 'menu.transparentSelected',
                        group: 'component',
                        order: 3,
                        onClick: () => {
                            console.log('[Menu] 半透明选中构件 - 暂未实现');
                            this.rightKey?.hide();
                        }
                    });

                    // 4. 隔离选中构件（带子菜单）
                    items.push({
                        id: 'isolateSelected',
                        label: 'menu.isolateSelected',
                        group: 'component',
                        order: 4,
                        divider: true,
                        children: [
                            {
                                id: 'hideOthers',
                                label: 'menu.hideOthers',
                                onClick: () => {
                                    console.log('[Menu] 隔离 - 其他构件隐藏 - 暂未实现');
                                    this.rightKey?.hide();
                                }
                            },
                            {
                                id: 'transparentOthers',
                                label: 'menu.transparentOthers',
                                onClick: () => {
                                    console.log('[Menu] 隔离 - 其他构件半透明 - 暂未实现');
                                    this.rightKey?.hide();
                                }
                            }
                        ]
                    });

                    // 5. 剖切盒适应
                    items.push({
                        id: 'fitSectionBox',
                        label: 'menu.fitSectionBox',
                        group: 'component',
                        order: 5,
                        onClick: () => {
                            console.log('[Menu] 剖切盒适应 - 暂未实现');
                            this.rightKey?.hide();
                        }
                    });
                }

                // 6. 显示全部（始终显示）
                items.push({
                    id: 'showAll',
                    label: 'menu.showAll',
                    group: 'component',
                    order: 6,
                    onClick: () => {
                        console.log('[Menu] 显示全部 - 暂未实现');
                        this.rightKey?.hide();
                    }
                });

                return items;
            });

            return this.engineInstance.isInitialized();
        } catch (error) {
            console.error('[EngineManager] Failed to initialize 3D engine:', error);
            this.engineInstance = null;
            return false;
        }
    }

    /**
     * 检查引擎是否已初始化
     * @returns 是否已初始化
     */
    public isInitialized(): boolean {
        return this.engineInstance !== null && this.engineInstance.isInitialized();
    }

    /**
     * 加载模型
     * @param url 模型 URL
     * @param options 加载选项
     */
    public loadModel(url: string, options?: ModelLoadOptions): void {
        if (!this.engineInstance) {
            console.warn('[EngineManager] 3D Engine not initialized.');
            return;
        }
        this.engineInstance.loadModel(url, options);
    }

    /**
     * 获取底层引擎实例
     * @returns 引擎实例
     */
    public getEngine(): any {
        if (!this.engineInstance) {
            console.warn('[EngineManager] 3D Engine not initialized.');
            return null;
        }
        return this.engineInstance.getEngine();
    }

    /** 相机回到初始位置 */
    public CameraGoHome(): void {
        if (!this.engineInstance) {
            console.warn('[EngineManager] 3D Engine not initialized.');
            return;
        }
        this.engineInstance.CameraGoHome();
    }

    /** 暂停渲染 */
    public pauseRendering(): void {
        if (!this.engineInstance) {
            console.warn('[EngineManager] 3D Engine not initialized.');
            return;
        }
        this.engineInstance.pauseRendering();
    }

    /** 恢复渲染 */
    public resumeRendering(): void {
        if (!this.engineInstance) {
            console.warn('[EngineManager] 3D Engine not initialized.');
            return;
        }
        this.engineInstance.resumeRendering();
    }

    /**
     * 激活测量模式
     * @param mode 测量模式
     */
    public activateMeasure(mode: MeasureMode): void {
        if (!this.engineInstance) {
            console.warn('[EngineManager] 3D Engine not initialized.');
            return;
        }
        this.engineInstance.activateMeasure(mode);
    }

    /** 停用测量模式 */
    public deactivateMeasure(): void {
        if (!this.engineInstance) {
            return;
        }
        this.engineInstance.deactivateMeasure();
    }

    /**
     * 获取当前测量类型
     * @returns 当前测量模式
     */
    public getCurrentMeasureType(): MeasureMode | null {
        if (!this.engineInstance) {
            return null;
        }
        return this.engineInstance.getCurrentMeasureType();
    }

    /** 清除所有测量标注 */
    public clearAllMeasures(): void {
        if (!this.engineInstance) {
            return;
        }
        this.engineInstance.clearAllMeasures();
    }

    /**
     * 激活剖切功能（统一入口）
     * @param mode 剖切模式: 'x' | 'y' | 'z' (轴向剖切) | 'box' (剖切盒) | 'face' (拾取面剖切)
     * @remarks 代理调用 Engine.activeSection(mode)
     */
    public activeSection(mode: 'x' | 'y' | 'z' | 'box' | 'face'): void {
        if (!this.engineInstance) {
            console.warn('[EngineManager] 3D Engine not initialized.');
            return;
        }
        this.engineInstance.activeSection(mode);
    }

    /**
     * 获取当前激活的剖切模式
     * @returns 当前剖切模式，未激活时返回 null
     */
    public getCurrentSectionMode(): 'x' | 'y' | 'z' | 'box' | 'face' | null {
        if (!this.engineInstance) {
            return null;
        }
        return this.engineInstance.getCurrentSectionMode();
    }

    /**
     * 停用所有剖切功能
     * @remarks 关闭剖切对话框时调用
     */
    public deactivateSection(): void {
        if (!this.engineInstance) {
            return;
        }
        this.engineInstance.deactivateSection();
    }

    /**
     * 设置剖切盒范围
     * @param range 各轴的剖切范围 (百分比 0-100)
     * @remarks 仅在 'box' 模式下有效
     */
    public setSectionBoxRange(range: SectionBoxRange): void {
        if (!this.engineInstance) {
            console.warn('[EngineManager] 3D Engine not initialized.');
            return;
        }
        this.engineInstance.setSectionBoxRange(range);
    }

    /**
     * 隐藏剖切面（临时隐藏，可恢复）
     * @remarks 配合 recoverSection() 使用
     */
    public hideSection(): void {
        if (!this.engineInstance) {
            return;
        }
        this.engineInstance.hideSection();
    }

    /**
     * 恢复剖切面（从隐藏状态恢复）
     * @remarks 恢复被 hideSection() 隐藏的剖切面
     */
    public recoverSection(): void {
        if (!this.engineInstance) {
            return;
        }
        this.engineInstance.recoverSection();
    }

    /** 激活框选放大功能 */
    public activateZoomBox(): void {
        if (!this.engineInstance) {
            console.warn('[EngineManager] 3D Engine not initialized.');
            return;
        }
        this.engineInstance.activateZoomBox();
    }

    // ==================== 漫游功能 ====================

    /** 激活第一人称漫游模式 */
    public activateFirstPersonMode(): void {
        if (!this.engineInstance) {
            console.warn('[EngineManager] 3D Engine not initialized.');
            return;
        }
        this.engineInstance.activateFirstPersonMode();
    }

    /** 停用第一人称漫游模式 */
    public deactivateFirstPersonMode(): void {
        if (!this.engineInstance) {
            return;
        }
        this.engineInstance.deactivateFirstPersonMode();
    }

    /**
     * 设置漫游移动速度
     * @param speed 移动速度
     */
    public setWalkSpeed(speed: number): void {
        if (!this.engineInstance) {
            console.warn('[EngineManager] 3D Engine not initialized.');
            return;
        }
        this.engineInstance.setWalkSpeed(speed);
    }

    /**
     * 设置漫游重力开关
     * @param enabled 是否启用重力
     */
    public setWalkGravity(enabled: boolean): void {
        if (!this.engineInstance) {
            console.warn('[EngineManager] 3D Engine not initialized.');
            return;
        }
        this.engineInstance.setWalkGravity(enabled);
    }

    /**
     * 设置漫游碰撞检测开关
     * @param enabled 是否启用碰撞检测
     */
    public setWalkCollision(enabled: boolean): void {
        if (!this.engineInstance) {
            console.warn('[EngineManager] 3D Engine not initialized.');
            return;
        }
        this.engineInstance.setWalkCollision(enabled);
    }

    /**
     * 获取漫游模式是否激活
     * @returns 是否处于漫游模式
     */
    public isFirstPersonModeActive(): boolean {
        if (!this.engineInstance) {
            return false;
        }
        return this.engineInstance.isFirstPersonModeActive();
    }

    // ==================== 结束：漫游功能 ====================

    // ==================== 构件选中 ====================

    /**
     * 获取当前选中的构件
     * @returns 选中构件的 URL 和 ID，未选中时返回 null
     */
    public getSelectedComponent(): { url: string; id: string } | null {
        return this.engineInstance?.getSelectedComponent() ?? null;
    }

    /**
     * 获取构件属性
     * @param url 模型 URL
     * @param id 构件 ID
     * @param callback 回调函数，接收属性数据
     */
    public getComponentProperties(
        url: string,
        id: string,
        callback: (data: any) => void
    ): void {
        this.engineInstance?.getComponentProperties(url, id, callback);
    }

    // ==================== 结束：构件选中 ====================

    // ==================== 模型树 ====================

    public getTypeTreeData(): any[] {
        return this.engineInstance?.getTypeTreeData() ?? [];
    }

    public getLevelTreeData(): any[] {
        return this.engineInstance?.getLevelTreeData() ?? [];
    }

    public getMajorTreeData(): any[] {
        return this.engineInstance?.getMajorTreeData() ?? [];
    }

    // ==================== 结束：模型树 ====================

    /** 销毁引擎管理器 */
    public destroy(): void {
        if (this.engineInstance) {
            this.engineInstance.destroy();
            this.engineInstance = null;
        }
        if (this.rightKey) {
            this.rightKey.destroy();
            this.rightKey = null;
        }
        super.destroy();
    }
}