import {
  _decorator,
  isValid,
  Node,
  VideoClip,
  UITransform,
  Vec3,
  VideoPlayer,
  Size,
} from "cc";
import Utils from "../../Main/Common/Utils";
import li_BaseView from "../../Main/Common/li_BaseView";
import ResManager from "../../Main/Manager/ResManager";
const { ccclass, property } = _decorator;

//场景背景层 - 视频模式
@ccclass("SceneBgVideoLayer")
export class SceneBgVideoLayer extends li_BaseView {
  private _nodeTab: any = {};
  private _data;

  static handle: SceneBgVideoLayer | null = null;

  private videoPlayer: VideoPlayer = null;
  private isPlaying: boolean = false;
  private currentVideoData: any = null;

  //----重写父类接口---------------------------------------
  onLoadCT() {
    Utils.parseNode(this.node, this._nodeTab);
    this.videoPlayer = this._nodeTab.videoPlayer.getComponent(VideoPlayer);
    if (!this.videoPlayer) {
      console.error("SceneBgVideoLayer: video节点未找到或没有VideoPlayer组件");
    }
    this.initVideoEvents();
    SceneBgVideoLayer.handle = this;
  }
  openUIDataCT(data: any): void {
    this._data = data;
  }

  /**初始化视频事件监听 */
  private initVideoEvents() {
    if (!this.videoPlayer) return;

    // 移除之前的事件监听器，避免重复绑定
    this.videoPlayer.node.off(
      VideoPlayer.EventType.READY_TO_PLAY,
      this.onVideoReadyToPlay,
      this
    );
    //this.videoPlayer.node.off(VideoPlayer.EventType.VIDEO_PLAYER_EVENT, this.onVideoEvent, this);

    // 添加新的事件监听
    this.videoPlayer.node.on(
      VideoPlayer.EventType.READY_TO_PLAY,
      this.onVideoReadyToPlay,
      this
    );
    // this.videoPlayer.node.on(VideoPlayer.EventType.VIDEO_PLAYER_EVENT, this.onVideoEvent, this);
  }

  //================== 公共 API 方法 ==================

  /**
   * 播放视频 - 统一的视频播放接口
   * @param path 视频路径
   * @param options 可选配置项
   * @param options.loop 是否循环播放，默认true
   * @param options.size 视频尺寸 {width, height}
   * @param options.position 视频位置 {x, y, z}
   * @param options.scale 视频缩放值
   * @param options.autoFill 是否自动填充到指定尺寸
   */
  playVideo(
    path: string,
    options?: {
      loop?: boolean;
      size?: { width: number; height: number } | Size;
      position?: { x: number; y: number; z?: number } | Vec3;
      scale?: number | Vec3;
    }
  ) {
    if (!this.videoPlayer) {
      console.error("SceneBgVideoLayer: VideoPlayer未初始化");
      return;
    }

    // 默认参数
    const config = {
      loop: options?.loop ?? true,
      size: options?.size,
      position: options?.position,
      scale: options?.scale,
    };

    // 先停止当前视频
    if (this.isPlaying) {
      this.stop();
    }

    // 加载本地视频资源
    ResManager.I.changeBundleVideo(
      this.videoPlayer,
      path,
      "Girls",
      (res: VideoClip) => {
        this.videoPlayer.loop = config.loop;
        
        // 设置锚点为中心，确保位置对齐
        const uiTransform = this.videoPlayer.node.getComponent(UITransform);
        if (uiTransform) {
          uiTransform.setAnchorPoint(0.5, 0.5);
        }
        
        // 应用位置设置（使用世界坐标）
        if (config.position) {
          const pos = config.position;
          if (pos instanceof Vec3) {
            this.videoPlayer.node.setWorldPosition(pos);
          } else {
            this.videoPlayer.node.setWorldPosition(pos.x, pos.y, pos.z || 0);
          }
        }

        // 如果传入了目标尺寸，计算并应用缩放
        if (config.size && uiTransform) {
          // 获取视频的原始尺寸
          const videoWidth = uiTransform.contentSize.width;
          const videoHeight = uiTransform.contentSize.height;
          
          if (videoWidth > 0 && videoHeight > 0) {
            const targetWidth = config.size instanceof Size ? config.size.width : config.size.width;
            const targetHeight = config.size instanceof Size ? config.size.height : config.size.height;
            
            // 计算缩放比例（填满整个区域）
            const scaleX = targetWidth / videoWidth;
            const scaleY = targetHeight / videoHeight;
            const scale = Math.max(scaleX, scaleY);
            
            this.videoPlayer.node.setScale(new Vec3(scale, scale, 1));
            console.log(`SceneBgVideoLayer: 视频原始尺寸: ${videoWidth}x${videoHeight}, 目标尺寸: ${targetWidth}x${targetHeight}, 缩放: ${scale}`);
          } else {
            // 如果视频尺寸还未准备好，延迟重试
            this.scheduleOnce(() => {
              if (config.size && uiTransform) {
                const videoWidth = uiTransform.contentSize.width;
                const videoHeight = uiTransform.contentSize.height;
                
                if (videoWidth > 0 && videoHeight > 0) {
                  const targetWidth = config.size instanceof Size ? config.size.width : config.size.width;
                  const targetHeight = config.size instanceof Size ? config.size.height : config.size.height;
                  
                  const scaleX = targetWidth / videoWidth;
                  const scaleY = targetHeight / videoHeight;
                  const scale = Math.max(scaleX, scaleY);
                  
                  this.videoPlayer.node.setScale(new Vec3(scale, scale, 1));
                  console.log(`SceneBgVideoLayer: (延迟) 视频原始尺寸: ${videoWidth}x${videoHeight}, 目标尺寸: ${targetWidth}x${targetHeight}, 缩放: ${scale}`);
                }
              }
            }, 0.1);
          }
        }
        // 如果显式传入了 scale 参数，覆盖自动计算的缩放
        else if (config.scale !== undefined) {
          this.setVideoScale(config.scale);
        }

        this.videoPlayer.play();
        this.isPlaying = true;
        console.log(`SceneBgVideoLayer: 播放视频 ${path}, 配置:`, config);
      }
    );
  }

  /**
   * 暂停视频
   */
  pause() {
    if (this.videoPlayer && this.isPlaying) {
      this.videoPlayer.pause();
      console.log("SceneBgVideoLayer: 暂停视频");
    }
  }

  /**
   * 继续播放视频
   */
  resume() {
    if (this.videoPlayer && !this.videoPlayer.isPlaying) {
      this.videoPlayer.play();
      console.log("SceneBgVideoLayer: 继续播放视频");
    }
  }

  /**
   * 停止视频
   */
  stop() {
    if (this.videoPlayer) {
      this.videoPlayer.stop();
      this.isPlaying = false;
      console.log("SceneBgVideoLayer: 停止视频");
    }
  }

  /**
   * 设置视频缩放
   * @param scale 缩放值（数字或Vec3）
   */
  setVideoScale(scale: number | Vec3) {
    if (this.videoPlayer) {
      if (typeof scale === "number") {
        this.videoPlayer.node.setScale(new Vec3(scale, scale, 1));
        console.log(`SceneBgVideoLayer: 设置视频缩放 ${scale}`);
      } else {
        this.videoPlayer.node.setScale(scale);
        console.log(
          `SceneBgVideoLayer: 设置视频缩放 (${scale.x}, ${scale.y}, ${scale.z})`
        );
      }
    }
  }

  /**
   * 调整视频以填满指定区域
   * @param targetSize 目标尺寸
   * @param position 可选的位置
   */
  adjustToFillArea(targetSize: Size, position?: Vec3) {
    if (!this.videoPlayer) return;

    const tryAdjust = () => {
      const uiTransform = this.videoPlayer.node.getComponent(UITransform);
      if (!uiTransform) return false;

      const videoSize = uiTransform.contentSize;

      if (videoSize.width > 0 && videoSize.height > 0) {
        // 计算宽度和高度的缩放比例
        const scaleX = targetSize.width / videoSize.width;
        const scaleY = targetSize.height / videoSize.height;

        // 选择较大的缩放比例以填满整个区域
        const scale = Math.max(scaleX, scaleY);

        this.videoPlayer.node.setScale(new Vec3(scale, scale, 1));

        if (position) {
          this.videoPlayer.node.setWorldPosition(position);
        }

        console.log(`SceneBgVideoLayer: 自适应填充区域，缩放: ${scale}`);
        return true;
      }
      return false;
    };

    // 立即尝试一次
    if (!tryAdjust()) {
      // 如果失败，延迟尝试
      this.scheduleOnce(() => {
        if (!tryAdjust()) {
          this.scheduleOnce(() => {
            tryAdjust();
          }, 0.5);
        }
      }, 0.1);
    }
  }

  //================== 事件回调 ==================

  private onVideoReadyToPlay = () => {
    console.log("SceneBgVideoLayer: 视频准备完成");
    this.onVideoReady();
  };

  private onVideoEvent = (event: any, eventType: string) => {
    switch (eventType) {
      case "completed":
        console.log("SceneBgVideoLayer: 视频播放完成");
        this.isPlaying = false;
        this.onVideoEnd();
        break;
      case "error":
        console.error("SceneBgVideoLayer: 视频播放错误");
        this.isPlaying = false;
        this.onVideoError();
        break;
    }
  };

  /**
   * 视频准备完成回调（可重写）
   */
  protected onVideoReady() {
    // 由子类重写或外部监听
  }

  /**
   * 视频播放完成回调（可重写）
   */
  protected onVideoEnd() {
    // 由子类重写或外部监听
  }

  /**
   * 视频播放错误回调（可重写）
   */
  protected onVideoError() {
    // 由子类重写或外部监听
  }

  //================== 其他方法 ==================

  /**
   * 获取当前播放状态
   */
  getIsPlaying(): boolean {
    return this.isPlaying;
  }

  /**
   * 获取VideoPlayer组件引用
   */
  getVideoPlayer(): VideoPlayer | null {
    return this.videoPlayer;
  }

  /**
   * 销毁时清理资源
   */
  onDestroy() {
    if (this.videoPlayer) {
      this.videoPlayer.node.off(
        VideoPlayer.EventType.READY_TO_PLAY,
        this.onVideoReadyToPlay,
        this
      );
      //this.videoPlayer.node.off(VideoPlayer.EventType.VIDEO_PLAYER_EVENT, this.onVideoEvent, this);
    }
    SceneBgVideoLayer.handle = null;
  }
}