/**
 * PinballManager - Pinball模块主控制器
 * 负责整个Pinball模块的生命周期管理和模式切换
 */

import { _decorator, Camera, Component, director, Director, game, Game, Node, Scene } from 'cc';
import { EventBus } from './Core/EventBus';
import { GameState, PinballConfig } from './Core/GameData';
import { StandaloneMode } from './GameModes/StandaloneMode';

const { ccclass, property } = _decorator;

export enum PinballMode {
    STANDALONE = 'standalone',
    CLIENT_MULTIPLAYER = 'client-multiplayer',
    SERVER_MULTIPLAYER = 'server-multiplayer'
}

@ccclass('PinballManager')
export class PinballManager extends Component {

    @property({
        type: Node,
        tooltip: "主相机节点，用于渲染游戏画面"
    })
    cameraNode: Node = null;

    @property({
        type: Node,
        tooltip: "渲染容器节点，所有游戏对象将在此节点下渲染"
    })
    renderContainer: Node = null;

    @property({
        type: Node,
        tooltip: "UI容器节点，用于显示游戏UI界面"
    })
    uiContainer: Node = null;

    @property({
        tooltip: "启动时的默认游戏模式"
    })
    defaultMode: PinballMode = PinballMode.STANDALONE;

    @property({
        tooltip: "是否在启动时自动开始游戏"
    })
    autoStart: boolean = true;

    @property({
        tooltip: "调试模式，启用详细日志"
    })
    debugMode: boolean = true;

    // 核心系统
    private eventBus: EventBus = null;
    private currentMode: PinballMode = null;
    private currentGameMode: Component = null;
    private mainCamera: Camera = null;

    // 游戏状态
    private isInitialized: boolean = false;
    private isPaused: boolean = false;
    private gameConfig: PinballConfig = null;

    /**
     * 启动 PinballManager
     * 必须在配置应用后调用
     */
    async Start(): Promise<boolean> {
        this.log('[PinballManager] Start 开始');

        try {
            // 初始化事件总线
            this.eventBus = EventBus.getInstance();

            // 验证必需的节点
            if (!this.validateRequiredNodes()) {
                console.error('[PinballManager] 必需节点验证失败');
                return false;
            }

            // 获取主相机
            this.initializeCamera();

            // 创建默认配置
            this.createDefaultConfig();

            // 注册全局事件监听器
            this.registerGlobalEvents();

            // 初始化完成
            this.isInitialized = true;
            this.log('[PinballManager] 初始化完成');

            this.log('[PinballManager] Start 完成');
            return true;
        } catch (error) {
            console.error('[PinballManager] Start 过程中发生错误:', error);
            return false;
        }
    }

    /**
     * 停止 PinballManager
     */
    Stop(): void {
        this.log('[PinballManager] Stop 开始');
        this.cleanup();
        this.isInitialized = false;
        this.log('[PinballManager] Stop 完成');
    }

    // 保留 onDestroy 作为安全清理
    onDestroy() {
        this.Stop();
    }

    /**
     * 验证必需的节点
     */
    private validateRequiredNodes(): boolean {
        if (!this.cameraNode) {
            console.error('[PinballManager] cameraNode 未设置');
            return false;
        }

        if (!this.renderContainer) {
            console.error('[PinballManager] renderContainer 未设置');
            return false;
        }

        return true;
    }

    /**
     * 初始化相机
     */
    private initializeCamera(): void {
        this.mainCamera = this.cameraNode.getComponent(Camera);
        if (!this.mainCamera) {
            console.error('[PinballManager] 主相机组件未找到');
            return;
        }

        this.log('主相机初始化完成');
    }

    /**
     * 创建默认配置
     */
    private createDefaultConfig(): void {
        this.gameConfig = {
            mode: this.defaultMode,
            physicsSettings: {
                gravity: { x: 0, y: -9.81 },
                timeStep: 1 / 60
            },
            renderSettings: {
                enableEffects: true,
                maxParticles: 500
            },
            wasmPath: 'assets/wasm/pinball_physics.wasm'
        };

        this.log('默认配置创建完成', this.gameConfig);
    }

    /**
     * 注册全局事件监听器
     */
    private registerGlobalEvents(): void {
        // 监听场景切换事件 - Cocos Creator 3.x 中使用静态常量
        director.on(Director.EVENT_BEFORE_SCENE_LAUNCH, this.onSceneChange, this);

        // 监听游戏暂停/恢复 - Cocos Creator 3.x 中使用game事件
        game.on(Game.EVENT_HIDE, this.onGamePause, this);
        game.on(Game.EVENT_SHOW, this.onGameResume, this);

        this.log('全局事件监听器注册完成');
    }

    /**
     * 启动游戏
     */
    public async startGame(mode: PinballMode): Promise<boolean> {
        if (!this.isInitialized) {
            console.error('[PinballManager] 尚未初始化');
            return false;
        }

        if (this.currentGameMode) {
            await this.stopCurrentGame();
        }

        this.log(`开始启动游戏模式: ${mode}`);

        try {
            switch (mode) {
                case PinballMode.STANDALONE:
                    await this.startStandaloneMode();
                    break;

                case PinballMode.CLIENT_MULTIPLAYER:
                    console.warn('[PinballManager] Client Multiplayer 模式尚未实现');
                    return false;

                case PinballMode.SERVER_MULTIPLAYER:
                    console.warn('[PinballManager] Server Multiplayer 模式尚未实现');
                    return false;

                default:
                    console.error(`[PinballManager] 未知游戏模式: ${mode}`);
                    return false;
            }

            this.currentMode = mode;
            this.gameConfig.mode = mode;

            this.log(`游戏模式 ${mode} 启动成功`);

            // 发送游戏开始事件
            this.eventBus.emit('game.started', { mode });

            return true;

        } catch (error) {
            console.error(`[PinballManager] 启动游戏模式 ${mode} 失败:`, error);
            return false;
        }
    }

    /**
     * 启动Standalone模式
     */
    private async startStandaloneMode(): Promise<void> {
        // 添加StandaloneMode组件
        const standaloneMode = this.node.addComponent(StandaloneMode);

        // 设置所需的引用
        standaloneMode.gameCamera = this.mainCamera;
        standaloneMode.renderNode = this.renderContainer;
        standaloneMode.boundsNode = this.renderContainer; // 简化设置

        // StandaloneMode 会在 onLoad 中自动初始化
        this.currentGameMode = standaloneMode;

        this.log('Standalone模式启动完成');
    }

    /**
     * 停止当前游戏模式
     */
    public async stopCurrentGame(): Promise<void> {
        if (!this.currentGameMode) {
            return;
        }

        this.log(`停止当前游戏模式: ${this.currentMode}`);

        // 销毁当前游戏模式组件
        this.currentGameMode.destroy();
        this.currentGameMode = null;
        this.currentMode = null;

        // 发送游戏停止事件
        this.eventBus.emit('game.stopped', {});

        this.log('当前游戏模式已停止');
    }

    /**
     * 暂停游戏
     */
    public pauseGame(): void {
        if (this.isPaused) {
            return;
        }

        this.isPaused = true;
        this.eventBus.emit('game.paused', {});
        this.log('游戏已暂停');
    }

    /**
     * 恢复游戏
     */
    public resumeGame(): void {
        if (!this.isPaused) {
            return;
        }

        this.isPaused = false;
        this.eventBus.emit('game.resumed', {});
        this.log('游戏已恢复');
    }

    /**
     * 重启当前游戏
     */
    public async restartGame(): Promise<boolean> {
        const currentMode = this.currentMode;

        if (currentMode) {
            await this.stopCurrentGame();
            return await this.startGame(currentMode);
        }

        return false;
    }

    /**
     * 切换游戏模式
     */
    public async switchMode(newMode: PinballMode): Promise<boolean> {
        if (this.currentMode === newMode) {
            this.log(`已经是 ${newMode} 模式`);
            return true;
        }

        return await this.startGame(newMode);
    }

    /**
     * 场景切换事件处理
     */
    private onSceneChange(scene: Scene): void {
        this.log('场景切换事件');
        // 可以在此处理场景切换时的清理工作
    }

    /**
     * 游戏暂停事件处理
     */
    private onGamePause(): void {
        this.pauseGame();
    }

    /**
     * 游戏恢复事件处理
     */
    private onGameResume(): void {
        this.resumeGame();
    }

    /**
     * 清理资源
     */
    private cleanup(): void {
        // 清理全局事件监听器
        director.off(Director.EVENT_BEFORE_SCENE_LAUNCH, this.onSceneChange, this);
        game.off(Game.EVENT_HIDE, this.onGamePause, this);
        game.off(Game.EVENT_SHOW, this.onGameResume, this);

        // 停止当前游戏
        if (this.currentGameMode) {
            this.stopCurrentGame();
        }

        this.log('PinballManager 资源清理完成');
    }

    /**
     * 获取当前游戏状态
     */
    public getGameState(): GameState | null {
        if (this.currentGameMode && this.currentGameMode instanceof StandaloneMode) {
            return this.currentGameMode.getGameStats() as any;
        }
        return null;
    }

    /**
     * 获取游戏配置
     */
    public getConfig(): PinballConfig {
        return this.gameConfig;
    }

    /**
     * 更新游戏配置
     */
    public updateConfig(newConfig: Partial<PinballConfig>): void {
        this.gameConfig = { ...this.gameConfig, ...newConfig };
        this.log('游戏配置已更新', this.gameConfig);
    }

    /**
     * 调试日志输出
     */
    private log(message: string, data?: any): void {
        if (this.debugMode) {
            if (data) {
                console.log(`[PinballManager] ${message}`, data);
            } else {
                console.log(`[PinballManager] ${message}`);
            }
        }
    }
}