import { _decorator, Component, Node, Vec3, tween, Color,find, Sprite, resources, sp, Material } from 'cc';
import EventBus, { GameEvents } from '../Core/EventBus';
const { ccclass, property } = _decorator;

/**
 * 小球撞击动画管理器
 * 负责在小球撞击时播放特效动画
 */
@ccclass('BallAni')
export class BallAni extends Component {
    
    // 撞击特效预制体缓存
    private static impactEffectSkeleton: sp.SkeletonData = null;
    private static isLoading: boolean = false;
    
    // 白色描边材质缓存
    private static whiteMaterial: Material = null;
    private static isMaterialLoading: boolean = false;
    
    // 当前播放中的特效节点列表
    private activeEffects: Node[] = [];
    
    // 当前播放中的方块动画列表
    private activeBlockAnimations: Map<Node, any> = new Map();
    
    // 敌人生成状态
    private enemySpawningActive: boolean = false;
    
    start() {
        // 预加载撞击特效资源
        this.preloadImpactEffect();
        // 预加载白色描边材质
        this.preloadWhiteMaterial();
        
        // 监听敌人生成状态事件
        const eventBus = EventBus.getInstance();
        eventBus.on(GameEvents.ENEMY_SPAWNING_STARTED, this.onEnemySpawningStarted, this);
        eventBus.on(GameEvents.ENEMY_SPAWNING_STOPPED, this.onEnemySpawningStopped, this);
    }
    
    private onEnemySpawningStarted() {
        this.enemySpawningActive = true;
    }
    
    private onEnemySpawningStopped() {
        this.enemySpawningActive = false;
        // 当敌人生成停止时，立即检查是否需要发射子弹
        const eventBus = EventBus.getInstance();
        eventBus.emit(GameEvents.BALL_FIRE_BULLET, { 
            canFire: (canFire: boolean) => { } 
        });
    }
    
    /**
     * 播放方块被撞击动画
     * @param blockNode 方块节点
     */
    public playBlockHitAnimation(blockNode: Node) {
        if (!blockNode || !blockNode.isValid) {
            console.warn('[BallAni] 方块节点无效');
            return;
        }
        
        // 如果该方块已经在播放动画，跳过
        if (this.activeBlockAnimations.has(blockNode)) {
            console.log('[BallAni] 方块动画已在播放中，跳过');
            return;
        }
        
        // 检查是否有活跃敌人，只有有敌人时才播放缩放动画
        const eventBus = EventBus.getInstance();
        let hasActiveEnemies = false;
        
        // 通过事件系统检查是否有活跃敌人
        eventBus.emit(GameEvents.BALL_FIRE_BULLET, { 
            canFire: (canFire: boolean) => { 
                hasActiveEnemies = canFire; 
            } 
        });      
        
        // 立即执行动画
        this.executeBlockAnimation(blockNode, hasActiveEnemies);
        
        // 如果敌人生成未激活，立即检查是否需要发射子弹
        if (!this.enemySpawningActive) {
            eventBus.emit(GameEvents.BALL_FIRE_BULLET, { 
                canFire: (canFire: boolean) => { } 
            });
        }
    }
    
    /**
     * 执行方块动画的具体逻辑
     * @param blockNode 方块节点
     * @param hasActiveEnemies 是否有活跃敌人
     */
    private executeBlockAnimation(blockNode: Node, hasActiveEnemies: boolean) {
        if (!blockNode || !blockNode.isValid) {
            console.warn('[BallAni] 方块节点无效');
            return;
        }
        
        // 如果该方块已经在播放动画，跳过
        if (this.activeBlockAnimations.has(blockNode)) {
            console.log('[BallAni] 方块动画已在播放中，跳过');
            return;
        }
        
        // 新的预制体结构：Sprite组件在Node子节点上
        const nodeChild = blockNode.getChildByName('Node');
        const sprite = nodeChild ? nodeChild.getComponent(Sprite) : null;
        
        // 查找预制体根节点和Weapon节点
        // 如果传入的是子节点（如"Node"），需要找到预制体根节点
        let prefabRoot = blockNode;
        if (blockNode.name === 'Node' && blockNode.parent) {
            prefabRoot = blockNode.parent;
        }
        
        const weaponNode = prefabRoot.getChildByName('Weapon');
        
        // 保存原始材质和缩放
        // 优先保存customMaterial，如果没有则保存当前material
        const originalMaterial = sprite ? (sprite.customMaterial || sprite.material) : null;
        const originalBlockScale = new Vec3(blockNode.scale.x, blockNode.scale.y, blockNode.scale.z);
        const originalWeaponScale = weaponNode ? new Vec3(weaponNode.scale.x, weaponNode.scale.y, weaponNode.scale.z) : null;
        
        
        if (hasActiveEnemies) {
            // 有敌人时播放方块缩放动画（包括Node和Weapon子节点）
            const shrinkBlockScale = new Vec3(0.8, 0.8, 1);
            
            // 应用白色描边材质到Node子节点的Sprite组件
            if (sprite && BallAni.whiteMaterial) {
                sprite.material = BallAni.whiteMaterial;
            }
            
            // 对方块预制体进行缩放动画
            // Weapon节点需要在其原有0.4倍基础上再进行缩放动画
            const weaponShrinkScale = originalWeaponScale ? new Vec3(
                originalWeaponScale.x * 0.8, // 在0.4倍基础上再缩小到0.8倍
                originalWeaponScale.y * 0.8,
                originalWeaponScale.z
            ) : null;
            
            const animationTween = tween(blockNode)
                .to(0.1, { scale: shrinkBlockScale }, {
                    onStart: () => {
                        // 开始动画时，同时缩放Weapon节点
                        if (weaponNode && weaponShrinkScale) {
                            tween(weaponNode)
                                .to(0.1, { scale: weaponShrinkScale })
                                .start();
                        }
                    }
                })
                .to(0.2, { scale: originalBlockScale }, {
                    onStart: () => {
                        // 恢复动画时，同时恢复Weapon节点
                        if (weaponNode && originalWeaponScale) {
                            tween(weaponNode)
                                .to(0.2, { scale: originalWeaponScale })
                                .start();
                        }
                    }
                })
                .call(() => {
                    // 确保Weapon节点恢复到原始缩放
                    if (weaponNode && originalWeaponScale) {
                        weaponNode.scale = originalWeaponScale;
                    }
                    // 动画完成时恢复原始材质
                    if (sprite && originalMaterial) {
                        // 如果原始材质是customMaterial，则恢复customMaterial
                        if (sprite.customMaterial === originalMaterial) {
                            sprite.material = sprite.customMaterial;
                        } else {
                            sprite.material = originalMaterial;
                        }
                    } else if (sprite) {
                        // 如果没有保存的原始材质，尝试恢复到customMaterial
                        if (sprite.customMaterial) {
                            sprite.material = sprite.customMaterial;
                        } else {
                            sprite.material = null;
                        }
                    }
                    // 动画完成，从活动列表中移除
                    this.activeBlockAnimations.delete(blockNode);
                })
                .start();
            
            // 添加到活动动画列表
            this.activeBlockAnimations.set(blockNode, animationTween);
        } else {
            // 没有敌人时直接结束动画，不应用材质
            const animationTween = tween({})
                .delay(0.2)
                .call(() => {
                    // 动画完成，从活动列表中移除
                    this.activeBlockAnimations.delete(blockNode);
                })
                .start();
            
            // 添加到活动动画列表
            this.activeBlockAnimations.set(blockNode, animationTween);
        }
    }
    
    /**
     * 预加载撞击特效资源
     */
    private preloadImpactEffect() {
        if (BallAni.impactEffectSkeleton || BallAni.isLoading) {
            return;
        }
        
        BallAni.isLoading = true;
        const path = 'Animation/WeaponTx/tx0005/tx0005';
        resources.load(path, sp.SkeletonData, (err, sData: sp.SkeletonData) => {
            BallAni.isLoading = false;
            if (err || !sData) {
                console.warn('[BallAni] 加载撞击特效失败:', err);
                return;
            }
            BallAni.impactEffectSkeleton = sData;
            console.log('[BallAni] 撞击特效资源加载成功');
        });
    }
    
    /**
     * 预加载白色描边材质
     */
    private preloadWhiteMaterial() {
        if (BallAni.whiteMaterial || BallAni.isMaterialLoading) {
            return;
        }
        
        BallAni.isMaterialLoading = true;
        const materialPath = 'shaders/ui-sprite-white-material';
        resources.load(materialPath, Material, (err, material: Material) => {
            BallAni.isMaterialLoading = false;
            if (err || !material) {
                console.warn('[BallAni] 加载白色描边材质失败:', err);
                return;
            }
            BallAni.whiteMaterial = material;
            console.log('[BallAni] 白色描边材质加载成功');
        });
    }
    
    /**
     * 在指定位置播放撞击特效
     * @param worldPosition 世界坐标位置
     */
    public playImpactEffect(worldPosition: Vec3) {
        // 如果资源未加载，直接加载并播放
        if (!BallAni.impactEffectSkeleton) {
            const path = 'Animation/WeaponTx/tx0005/tx0005';
            resources.load(path, sp.SkeletonData, (err, sData: sp.SkeletonData) => {
                if (err || !sData) {
                    console.warn('[BallAni] 加载撞击特效失败:', err);
                    return;
                }
                BallAni.impactEffectSkeleton = sData;
                this.createAndPlayEffect(worldPosition, sData);
            });
            return;
        }
        
        this.createAndPlayEffect(worldPosition, BallAni.impactEffectSkeleton);
    }
    
    /**
     * 创建并播放特效
     */
    private createAndPlayEffect(worldPosition: Vec3, skeletonData: sp.SkeletonData) {
        const effectNode = new Node('ImpactEffect');
        const skeleton = effectNode.addComponent(sp.Skeleton);
        skeleton.skeletonData = skeletonData;
        skeleton.premultipliedAlpha = false;
        skeleton.setAnimation(0, 'animation', false);
        skeleton.setCompleteListener(() => {
            this.removeEffect(effectNode);
        });
        
        const canvas = find('Canvas');
        if (canvas) {
            canvas.addChild(effectNode);
            effectNode.setWorldPosition(worldPosition);
            // 设置特效缩放
            effectNode.setScale(1.5, 1.5, 1);
            // 设置特效更亮 - 增加亮度
            const color = new Color(255, 255, 255, 255);
            color.r = Math.min(255, color.r * 1.5);
            color.g = Math.min(255, color.g * 1.5);
            color.b = Math.min(255, color.b * 1.5);
            effectNode.getComponent(sp.Skeleton).color = color;
            // 添加到活动特效列表
            this.activeEffects.push(effectNode);
        } else {
            effectNode.destroy();
        }
    }
    
    /**
     * 移除特效节点
     * @param effectNode 要移除的特效节点
     */
    private removeEffect(effectNode: Node) {
        // 从活动特效列表中移除
        const index = this.activeEffects.indexOf(effectNode);
        if (index !== -1) {
            this.activeEffects.splice(index, 1);
        }
        
        // 销毁节点
        if (effectNode && effectNode.isValid) {
            effectNode.destroy();
        }
    }
    

    
    /**
     * 停止指定方块的动画
     * @param blockNode 方块节点
     */
    public stopBlockAnimation(blockNode: Node) {
        const animation = this.activeBlockAnimations.get(blockNode);
        if (animation) {
            animation.stop();
            this.activeBlockAnimations.delete(blockNode);
        }
    }
    
    /**
     * 清理所有活动的特效
     */
    public clearAllEffects() {
        for (const effect of this.activeEffects) {
            if (effect && effect.isValid) {
                effect.destroy();
            }
        }
        this.activeEffects = [];
    }
    
    /**
     * 清除所有方块动画
     */
    public clearAllBlockAnimations() {
        // 停止所有方块动画
        for (const [blockNode, animation] of this.activeBlockAnimations) {
            if (animation) {
                animation.stop();
            }
        }
        this.activeBlockAnimations.clear();
    }
    
    onDestroy() {
        // 解绑事件监听
        const eventBus = EventBus.getInstance();
        eventBus.off(GameEvents.ENEMY_SPAWNING_STARTED, this.onEnemySpawningStarted, this);
        eventBus.off(GameEvents.ENEMY_SPAWNING_STOPPED, this.onEnemySpawningStopped, this);
        
        // 组件销毁时清理所有特效和动画
        this.clearAllEffects();
        this.clearAllBlockAnimations();
    }
    
    /**
     * 获取BallAni实例
     * @returns BallAni实例
     */
    public static getInstance(): BallAni | null {
        const gameArea = find('Canvas/GameLevelUI/GameArea');
        if (!gameArea) {
            console.warn('[BallAni] 未找到GameArea节点');
            return null;
        }
        
        const ballAni = gameArea.getComponent(BallAni);
        if (!ballAni) {
            console.warn('[BallAni] GameArea节点上未找到BallAni组件');
            return null;
        }
        
        return ballAni;
    }
}