TTMusic/entry/src/main/ets/common/util/Utility.ets

import { BusinessError, pasteboard } from '@kit.BasicServicesKit';
import {
  AppUtil,
  ArrayUtil,
  Base64Util,
  DateUtil, FileUtil, ImageUtil, LogUtil,
  MD5,
  PreferencesUtil,
  RandomUtil, StrUtil } from '@pura/harmony-utils';
import { media } from '@kit.MediaKit';
import fs, { ReadTextOptions } from '@ohos.file.fs';
import { image } from '@kit.ImageKit';
import fileIo from '@ohos.file.fs';
import { VideoItem } from '../../viewmodel/VideoItem';
import { photoAccessHelper } from '@kit.MediaLibraryKit';
import { dataSharePredicates, uniformTypeDescriptor } from '@kit.ArkData';
import { systemShare } from '@kit.ShareKit';
import { fileUri, picker } from '@kit.CoreFileKit';
import {  common, UIAbility, Want } from '@kit.AbilityKit';
import { CommonConstants } from '../constants/CommonConstants';
import { window } from '@kit.ArkUI';
import { bundleManager } from '@kit.AbilityKit'
import { pinyin4js } from '@ohos/pinyin4js';
import { VipData } from '../../viewmodel/VipData';
import { LocalMusic } from '../../view/LocalMusic';
import { VipPage } from '../../pages/VipPage';
import { FFmpeg, FFProgressMessageParser } from '@sj/ffmpeg';

interface FFMpegTags {
  album?: string;
  ALBUM?: string;
  artist?: string;
  ARTIST?: string;
  TITLE?: string;
  title?: string;
  track?: string;
  TRACK?: string;
  TYER?: string;
  year?: string;
  genre?:string;
  GENRE?:string;
  date?: string;
  DATE?: string;
  LYRICS?: string;
  lyrics?: string;       // 小写变体
  USLT?: string;         // ID3v2同步歌词
  UNSYNCEDLYRICS?: string; // ID3v2非同步歌词
  // Add any other tag properties you expect
}

interface FFprobeFormat {
  filename: string;
  nb_streams: number;
  nb_programs: number;
  format_name: string;
  format_long_name: string;
  duration: string;
  size: string;
  bit_rate: string;
  probe_score: number;
  tags?: FFMpegTags;
}

interface FFprobeStream {
  // Define stream properties as needed
  codec_type?: string;  // 流类型，如"audio"、"video"
  sample_rate?: string; // 采样率
  bit_rate?: string;    // 比特率
  disposition?: StreamDisposition;  // 添加disposition属性
}

interface StreamDisposition {
  default?: number;
  dub?: number;
  original?: number;
  comment?: number;
  lyrics?: number;
  karaoke?: number;
  forced?: number;
  hearing_impaired?: number;
  visual_impaired?: number;
  clean_effects?: number;
  attached_pic?: number;  // 添加封面图片标识
  timed_thumbnails?: number;
  captions?: number;
  descriptions?: number;
  metadata?: number;
  dependent?: number;
  still_image?: number;
}

interface FFprobeMetadata {
  streams: FFprobeStream[];
  format: FFprobeFormat;
}

export class Utility {

  private constructor() {}

  static  isOpenTime():boolean{
    const currentDate = new Date();
    const targetDate = new Date(CommonConstants.OPEN_DATE);

    if (currentDate > targetDate) {
      return true
    }
    return false
  }
  static readonly FOREVER_DATE: string = 'forever';
  /**
   * 是否会员（只看线上会员状态）
   */
  static isNoble(): boolean {
    // 只判断线上会员状态
    return PreferencesUtil.getBooleanSync('hasActiveSubscription', false);
  }

  static isForever(): boolean {
    // 判断是不是永久会员
    return PreferencesUtil.getBooleanSync('isForever', false);
  }

  /**
   * 旧版客户端判断会员状态
   * @returns
   */
  static isNobleForOld():boolean{
    if(!Utility.isOpenTime())//提交审核的审核，刚刚开始可以全部是赞助用户。
      return true
    return PreferencesUtil.getBooleanSync('isNoble',false)
  }

  /**
   * setNoble方法废弃，保留兼容但不做任何操作
   */
  static setNoble(expireDate:string){
    let isNoble = false
    if(StrUtil.isNotEmpty(expireDate)){
      if(expireDate===VipPage.FOREVER_DATE){
        PreferencesUtil.putSync('isForever',true)
        isNoble = true
      }else{
        PreferencesUtil.putSync('isForever',false)
        const currentDate = new Date();
        const targetDate = DateUtil.getFormatDate(expireDate)

        if (currentDate > targetDate) {
          isNoble = false
        }else{
          isNoble = true
        }
      }
    }
    PreferencesUtil.putSync('isNoble',isNoble)
  }

  /**
   * 判断用户安装app是否超过2天，超过2天（2800分钟）才展示广告 显示广告 24*60=1440  1440*2=2800
   * @param day
   * @returns
   */
  static isPassInstallTime(day:number):boolean{
    //获取当前时间
    let currentTime = new Date().getTime();

    // 尝试从存储中获取安装时间
    let installTime = getInstallTime();

    if (installTime===0||installTime === null|| installTime===undefined) {
      // 如果没有存储安装时间，则存储当前时间为安装时间
      setInstallTime(currentTime);
      return false
    } else {
      // 计算时间差（以分钟为单位）
      const timeDifference = (currentTime - installTime) / (1000 * 60);
      LogUtil.debug("onecold timeDifference=" + timeDifference)
      // 如果超过5分钟，显示广告 24*60=1440  1440*2=2800
      if (timeDifference > 24*60*day) {
        return true
      }else{
        return false
      }
    }
  }

  // 定义一个函数来获取当前的时间段
  static getTimePeriod(): string {
    const now = new Date();
    const hours = now.getHours();

    if (hours >= 5 && hours < 12) {
      return "早上好";
    } else if (hours >= 12 && hours < 18) {
      return "下午好";
    } else if (hours >= 18 && hours < 22) {
      return "晚上好";
    } else {
      return "夜深了";
    }
  }

  static optimizedFormat(speed: number): string {
    if (speed) {
      const str = speed.toFixed(2);
      let end = str.length;
      while (end > 0 && (str[end - 1] === '0' || str[end - 1] === '.')) {
        end--;
        if (str[end] === '.') {
          break;
        }
      }
      return str.slice(0, end || 1) + 'x';
    } else {
      return '1x'
    }
  }

  static  isHaoOpenTime():boolean{
    const currentDate = new Date();
    const targetDate = new Date('2025-04-20');

    if (currentDate < targetDate) {
      return true
    }
    return false
  }

  static addDays(date: Date, days: number): Date {
    const result = new Date(date);
    result.setDate(result.getDate() + days);
    return result;
  }

  static convertToKHz(sampleRateHz: string|undefined): string {
    if(StrUtil.isEmpty(sampleRateHz)||sampleRateHz ===undefined)
      return '0KHz'

    const sampleRateKHz = Number(sampleRateHz) / 1000;
    return `${sampleRateKHz} KHz`;
  }

  /**
   * 格式化媒体格式类型显示
   * @param mimeType 媒体格式类型字符串
   * @return 格式化后的显示字符串
   */
  static formatMimeType(mimeType: string | undefined): string {
    if (StrUtil.isEmpty(mimeType) || mimeType === undefined) {
      return 'unknown';
    }

    // 从MIME类型中提取格式部分，例如 "audio/mp3" -> "MP3"
    try {
      const parts = mimeType.split('/');
      if (parts.length > 1) {
        return parts[1].toUpperCase();
      } else {
        return mimeType.toUpperCase();
      }
    } catch (err) {
      console.error(`格式化媒体类型出错: ${err}`);
      return 'unknown';
    }
  }

  //根据字节获取大小
  static  formatFileSize(bytes:number) {
    const units = ['Bytes', 'Kbps', 'Mbps'];
    let size = bytes;
    let unitIndex = 0;
    while (size >= 1024 && unitIndex < units.length - 1) {
      size /= 1024;
      unitIndex++;
    }
    if(size > 1024&&unitIndex==2){
      size = size*0.1
    }
    if(size > 1024&&unitIndex==2){
      size = size*0.1
    }
    if(size > 480&&unitIndex==2){
      size = size*0.5
    }
    // 保留两位小数, 四舍五入
    size = Math.round(size * 10) / 10;
    return size + units[unitIndex]
  }

  //根据字节获取大小无单位
  static  formatFileSizeWithout(bytes:number) {
    const units = ['Bytes', 'Kbps', 'Mbps'];
    let size = bytes;
    let unitIndex = 0;
    while (size >= 1024 && unitIndex < units.length - 1) {
      size /= 1024;
      unitIndex++;
    }
    if(size > 1024&&unitIndex==2){
      size = size*0.1
    }
    if(size > 1024&&unitIndex==2){
      size = size*0.1
    }
    if(size > 480&&unitIndex==2){
      size = size*0.5
    }
    // 保留两位小数, 四舍五入
    size = Math.round(size * 10) / 10;
    return size
  }

  static copyText(text:string):boolean{
    const pasteboardData = pasteboard.createData(pasteboard.MIMETYPE_TEXT_PLAIN,text)
    const systemPasteboard  = pasteboard.getSystemPasteboard()
    systemPasteboard.setData(pasteboardData)
    systemPasteboard.getData().then((data)=>{
      return data
    })
    return false
  }


  static getDbm(rssi:number):number{

    return  Math.round((rssi / 2) + 100)
  }


  //根据数字形式的IP地址获取字符串形式的IP地址
  static getIpAddrFromNum(ipNum: number): string {

    return (ipNum >>> 24) + '.' + (ipNum >> 16 & 0xFF) + '.' + (ipNum >> 8 & 0xFF) + '.' + (ipNum & 0xFF);
  }

  static  resolveIP(ip:number) {
    let address: string = ip.toString()
    if (address === '0') {
      return '00:00:000:000'
    }
    address.substring(0, 2)
    return `${address.substring(0, 2)}:${address.substring(2, 4)}:${address.substring(4, 7)}:${address.substring(7, 10)}`
  }


  static  isFreeTime():boolean{

    if(DateUtil.isWeekend()){
      return true
    }
    let str = DateUtil.getFormatDateStr(new Date(), 'HH')
    let a = Number(str);
    if(isNaN(a))
      return false
    // ToastUtil.showToast('a='+a)
    if (a >= 7 && a <13) {//白天
      return false;
    }


    if (a >= 13 && a <20) {//白天
      return false;
    }

    if (a >= 0 && a < 7) {//凌晨
      return true;
    }
    if (a >= 20 && a <= 24) {//晚上
      return true;
    }
    return false



  }

  //判断是否是音乐文件
  static isMusicByExtension(filename:string) {
    const extensions = CommonConstants.REAL_MUSIC_FORMAT
    const lastIndex = filename.lastIndexOf('.');
    if (lastIndex!== -1) {
      const fileExtension = filename.slice(lastIndex).toLowerCase();
      return extensions.includes(fileExtension);
    }
    return false;
  }

  //判断是否是媒体文件  音乐和视频都可以
  static isMeidaByExtension(filename:string) {
    const extensions = CommonConstants.MEDIA_FORMAT
    const lastIndex = filename.lastIndexOf('.');
    if (lastIndex!== -1) {
      const fileExtension = filename.slice(lastIndex).toLowerCase();
      return extensions.includes(fileExtension);
    }
    return false;
  }

  //判断是否是视频文件
  static isVideoByExtension(filename:string) {
    const extensions = CommonConstants.VIDEO_FORMAT
    const lastIndex = filename.lastIndexOf('.');
    if (lastIndex!== -1) {
      const fileExtension = filename.slice(lastIndex).toLowerCase();
      return extensions.includes(fileExtension);
    }
    return false;
  }

  // 获取缩略图
  static async getFetchFrameByTime(filePath: string) {
    if(Utility.isMusicByExtension(filePath)){
      return undefined
    }
    let pixelMap:image.PixelMap|undefined =undefined;
    try{
      // 创建AVImageGenerator对象
      let avImageGenerator: media.AVImageGenerator = await media.createAVImageGenerator()
      let file = fs.openSync(filePath, fs.OpenMode.READ_ONLY);
      let avFileDescriptor: media.AVFileDescriptor = { fd: file.fd };
      avImageGenerator.fdSrc = avFileDescriptor;
      // 初始化入参
      let timeUs = 0
      let queryOption = media.AVImageQueryOptions.AV_IMAGE_QUERY_NEXT_SYNC
      let param: media.PixelMapParams = {
        width : 300,
        height : 400,
      }
      // 获取缩略图（promise模式）
      pixelMap = await avImageGenerator.fetchFrameByTime(timeUs, queryOption, param)
      // 释放资源（promise模式）
      avImageGenerator.release()
      console.info(`release success.`)
      fs.closeSync(file);
    }catch (error) {
      console.error('uriGetAssets failed with err: ' + JSON.stringify(error));

    }

    return pixelMap
  }

  // 获取fd文件路径
  static async getFdDir(path:string){
    let fdPath = 'fd://';
    let file = await fileIo.open(path)
    fdPath = fdPath + '' + file.fd;
    return fdPath
  }



  // 根据uri获取文件名称
  static getMediaNameByUri(myUri: string) {
    let myFileName = (myUri.split('/').pop()) as string;
    return decodeURIComponent(myFileName)

  }

  static msToStandardTime(ms:string):string{
    let date = new Date(ms);
    let hours = date.getHours();
    let minutes = date.getMinutes();
    let seconds = date.getSeconds();
    return hours + ':' + minutes + ':' + seconds;

  }



  static getTimestampFromDateStr(dateStr: string, format: string = 'yyyy-MM-dd HH:mm'): number {
    // 定义正则表达式以匹配日期字符串中的各部分
    const regex = format
      .replace('yyyy', '(\\d{4})')
      .replace('MM', '(\\d{2})')
      .replace('dd', '(\\d{2})')
      .replace('HH', '(\\d{2})')
      .replace('mm', '(\\d{2})');

    const match = new RegExp(regex).exec(dateStr);

    if (!match) {
      throw new Error('Invalid date string or format');
    }

    // 解析匹配结果
    const year = Number(match[1]);
    const month = Number(match[2]);
    const day = Number(match[3]);
    const hours = Number(match[4]);
    const minutes = Number(match[5]);

    // 创建 Date 对象
    const dateObj = new Date(year, month - 1, day, hours, minutes);

    // 返回时间戳（以秒为单位）
    return Math.floor(dateObj.getTime() / 1000);
  }


  static getFormatDateStr(date: number | string | Date, format: string = 'yyyy-MM-dd HH:mm:ss'): string {
    // 将输入转换为 Date 对象
    let dateObj: Date;
    if (typeof date === 'number') {
      // 如果是十位时间戳，转换为毫秒数
      dateObj = new Date(date.toString().length === 10 ? date * 1000 : date);
    } else if (typeof date === 'string') {
      // 如果是字符串，尝试解析为 Date 对象
      dateObj = new Date(date);
    } else {
      // 如果是 Date 对象，直接使用
      dateObj = date;
    }

    // 定义替换规则
    const replacements = new Map<string, string>([
      ['yyyy', String(dateObj.getFullYear())],
      ['MM', String(dateObj.getMonth() + 1).padStart(2, '0')],
      ['dd', String(dateObj.getDate()).padStart(2, '0')],
      ['HH', String(dateObj.getHours()).padStart(2, '0')],
      ['mm', String(dateObj.getMinutes()).padStart(2, '0')],
      ['ss', String(dateObj.getSeconds()).padStart(2, '0')]
    ]);

    // 替换格式字符串中的占位符
    replacements.forEach((value, key) => {
      format = format.replace(new RegExp(key, 'g'), value);
    });

    return format;
  }
  //获取从文件管理器获得的视频资源的属性值
  static async uriGetAssetsFromFile(context:Context,uri:string,type:number,isLoadPixelMap?:boolean): Promise<VideoItem> {
    let item:VideoItem = new VideoItem('',uri,uri,type,0,'')
    try {
      console.info('asset file.uri: ', uri);


      let file = fs.openSync(uri, fs.OpenMode.READ_ONLY | fs.OpenMode.CREATE)
      console.info("file.fd " + file.fd);
      let fdfd = 'fd://' + file.fd
      //3、通过fs.stat方法获取stat对象
      console.info('asset file.name: ', file.name);
      console.info('asset file.uri: ', uri);
      console.info('asset file.fd: ', file.fd);
      console.info('asset file.path: ', file.path);
      item = new VideoItem(file.name,uri,uri,type,0,'')
      await fs.stat(file.fd).then(async (stat: fs.Stat) => {
        console.info("get file info succeed, the size of file is " + stat.size);
        let videoSize =  stat.size
        // let videoTime = stat.ctime

        let fileSize = Utility.formatFSize(videoSize)
        let cTime = Utility.getFormatDateStr(stat.mtime,'yyyy-MM-dd HH:mm')

        // console.info('asset stat.ino: ', stat.ino);
        // console.info('asset stat.mode: ', stat.mode);
        // console.info('asset stat.uid: ', stat.uid);
        // console.info('asset stat.ino: ', stat.gid);
        // console.info('asset stat.size: ', stat.size);
        console.info('asset stat.ctime: ', stat.ctime);
        // console.info('asset stat.mtime: ', stat.mtime);
        // console.info('asset stat.duration: ', duration);


        let pixelMap:image.PixelMap|undefined = undefined
        if(isLoadPixelMap){
          //获取缩略图
          if(Utility.isVideoByExtension(uri)){
            pixelMap = await Utility.getFetchFrameByTime(uri)
          }else{
            pixelMap = await Utility.getFetchMetadataFromFdSrcByPromise(uri)
          }
        }

        item = new VideoItem( file.name,uri ,uri,type,videoSize,cTime,pixelMap,fileSize,
          await ImageUtil.pixelMapToBase64Str(pixelMap))




      })
    } catch (error) {
      console.error('uriGetAssetsFromFile failed with err: ' + JSON.stringify(error));
    }

    return item


  }


  static async getFilePixelMapBig(uri:string){
    let pixelMap:image.PixelMap|undefined = undefined
    if(Utility.isMusicByExtension(uri)){
      pixelMap = await Utility.getFetchMetadataFromFdSrcByPromise(uri)
    }else{
      pixelMap = await Utility.getFetchFrameByTime(uri)
    }
    return  ImageUtil.pixelMapToBase64StrBig(pixelMap)
  }

  static async getFilePixelMap(uri:string){
    let pixelMap:image.PixelMap|undefined = undefined
    if(Utility.isMusicByExtension(uri)){
      pixelMap = await Utility.getFetchMetadataFromFdSrcByPromise(uri)
    }else{
      pixelMap = await Utility.getFetchFrameByTime(uri)
    }
    return  ImageUtil.pixelMapToBase64Str(pixelMap)
  }


  //根据filePathe获取对应的播放Index
  static getIndexFromList(localList:Array<VideoItem>,filePath:string){
    let list: Array<string> = [];
    for(let i=0;i<localList.length;i++){

      if(localList[i].filePath === filePath){
        return i
      }

    }
    return 0
  }

  // 在以下demo中，使用资源管理接口获取打包在HAP内的媒体资源文件，通过设置fdSrc属性，获取音频元数据并打印，
  // 获取音频专辑封面并通过Image控件显示在屏幕上。该demo以Promise形式进行异步接口调用
  static async getFetchMetadataFromFdSrcByPromise(uri: string): Promise<image.PixelMap | undefined> {
    let cover: image.PixelMap | undefined = undefined;

    if (canIUse("SystemCapability.Multimedia.Media.AVMetadataExtractor")) {
      try {
        // 创建AVMetadataExtractor对象
        const avMetadataExtractor: media.AVMetadataExtractor = await media.createAVMetadataExtractor();
        // 设置fdSrc
        const fd = await fs.openSync(uri, fs.OpenMode.READ_ONLY);
        avMetadataExtractor.fdSrc = fd;

        // 获取元数据（promise模式）
        const metadata = await avMetadataExtractor.fetchMetadata();
        metadata.author
        console.info(`get meta data, hasAudio: ${metadata.hasAudio}`);

        // 获取专辑封面（promise模式）
        cover = await avMetadataExtractor.fetchAlbumCover();

        // 释放资源（promise模式）
        await avMetadataExtractor.release();
        console.info('release success.');
      } catch (error) {
        console.error('Error during metadata extraction:', error);
      }
    } else {
      console.warn('AVMetadataExtractor capability is not supported.');
    }

    return cover;
  }


  static formatTimestamp(timestamp: number): string {
    // 将时间戳转换为 Date 对象
    const date = new Date(timestamp);

    // 获取各个部分
    const year = date.getFullYear();
    const month = String(date.getMonth() + 1).padStart(2, '0'); // 月份从0开始，需要加1
    const day = String(date.getDate()).padStart(2, '0');
    const hours = String(date.getHours()).padStart(2, '0');
    const minutes = String(date.getMinutes()).padStart(2, '0');
    const seconds = String(date.getSeconds()).padStart(2, '0');

    // 拼接成所需的格式
    return `${year}-${month}-${day} ${hours}:${minutes}`;
  }

  //获取音乐资源的属性值，
  static async uriGetMusicAssetsFromFile(context:Context,uri:string,type:number,isLoadPixelMap?:boolean): Promise<VideoItem> {
    return Utility.readMetaInfoFFmpeg(context,uri,type)

    //华为官方不支持的格式 不支持内嵌歌词Dsf，aif，aiff，wav  不支持内嵌封面dsf，aif，aiff
    if(StrUtil.isNotEmpty(uri)){
      if(uri.toLowerCase().endsWith('.dsf')
        ||uri.toLowerCase().endsWith('.aif')
        // ||uri.toLowerCase().endsWith('.wav')
        ||uri.toLowerCase().endsWith('.aiff')){
        return Utility.readMetaInfoFFmpeg(context,uri,type)
      }
    }


    let item:VideoItem = new VideoItem('',uri,uri,type,0,'')
    try {
      console.info('asset file.uri: ', uri);


      let file = fs.openSync(uri, fs.OpenMode.READ_ONLY | fs.OpenMode.CREATE)
      console.info("file.fd " + file.fd);
      let fdfd = 'fd://' + file.fd
      //3、通过fs.stat方法获取stat对象
      console.info('asset file.name: ', file.name);
      console.info('asset file.uri: ', uri);
      console.info('asset file.fd: ', file.fd);
      console.info('asset file.path: ', file.path);
      item = new VideoItem(file.name,uri,uri,type,0,'')
      await fs.stat(file.fd).then(async (stat: fs.Stat) => {
        console.info("get file info succeed, the size of file is " + stat.size);
        let videoSize =  stat.size
        // let videoTime = stat.ctime

        let fileSize = Utility.formatFSize(videoSize)
        //按照添加时间
        let addTime = Utility.getFormatDateStr(new Date(),'yyyy-MM-dd HH:mm');
        // console.info('onecold asset addTime: ', addTime);
        // let cTime = Utility.getFormatDateStr(stat.mtime,'yyyy-MM-dd HH:mm')

        // console.info('asset stat.ctime: ', stat.ctime);

        let musicName:string | undefined = file.name
        let artist:string | undefined = ''
        let album:string | undefined = ''
        let pixelMap:image.PixelMap|undefined|null = undefined
        let imagePath = ''

        let duration:string | undefined = ''
        let mimeType:string | undefined = ''
        let trackCount:string | undefined = ''//轨道数量
        let sampleRate:string | undefined = ''//音频的采样率单位为Hz

        if (canIUse("SystemCapability.Multimedia.Media.AVMetadataExtractor")) {
          try {
            // 创建AVMetadataExtractor对象
            const avMetadataExtractor: media.AVMetadataExtractor = await media.createAVMetadataExtractor();
            // 设置fdSrc
            const fd = await fs.openSync(uri, fs.OpenMode.READ_ONLY);
            avMetadataExtractor.fdSrc = fd;

            // 获取元数据（promise模式）
            const metadata = await avMetadataExtractor.fetchMetadata();
            if(StrUtil.isNotEmpty(metadata.title)){
              musicName = metadata.title
            }else{
              //自动解析像这样的获取不到元数据的 周杰伦-七里香.mp3文件
              console.log(`onecold musicName为空：${file.name}`);
              const musicData = parseMusicFileName(file.name);
              if (musicData.isValid)  {
                // console.log(`onecold 艺术家：${musicData.artist}`);   // 输出：周杰伦
                // console.log(`onecold 歌曲名：${musicData.title}`);   // 输出：七里香
                musicName = musicData.title
                if(artist==''||artist==undefined)
                  artist = musicData.artist
              } else {
                musicName = file.name
                // console.log("onecold 文件名格式不符合要求");
              }
            }


            if(StrUtil.isNotEmpty(metadata.artist)){
              artist = metadata.artist
            }
            if(artist==undefined)
              artist = ''

            if(StrUtil.isNotEmpty(metadata.album)){
              album = metadata.album
            }else{
              album = ''
            }

            if(StrUtil.isNotEmpty(metadata.duration)){
              if(metadata.duration)
                duration = convertSecondsToTime(metadata.duration.toString())
            }
            if(StrUtil.isNotEmpty(metadata.mimeType)){
              mimeType = metadata.mimeType
            }
            if(StrUtil.isNotEmpty(metadata.trackCount)){
              trackCount = metadata.trackCount
            }
            if(StrUtil.isNotEmpty(metadata.sampleRate)){
              sampleRate = metadata.sampleRate
            }

            let name = await MD5.digestSync(uri)

            if(isLoadPixelMap){
              // 获取专辑封面（promise模式）
              // pixelMap = await avMetadataExtractor.fetchAlbumCover();
              // // 释放资源（promise模式）
              // await avMetadataExtractor.release();

              pixelMap = await fetchAlbumCover(avMetadataExtractor)

              // console.info('onecold release success. name= '+musicName);
              if(pixelMap!==undefined&&pixelMap!==null){
                // console.info('onecold pixelMap is not empty= '+musicName);
                imagePath = await ImageUtil.savePixelMap(pixelMap,context.filesDir,name)
                imagePath = fileUri.getUriFromPath(imagePath)
              }else{
                // console.info('onecold pixelMap is  empty= '+musicName);
                imagePath = ''
                // if(StrUtil.isNotEmpty(artist))
                //   imagePath =  await NetAxiosUtil.getLyricCover(musicName,artist)
              }


            }else{
              imagePath = context.filesDir + FileUtil.separator + name
              imagePath = fileUri.getUriFromPath(imagePath)
            }
            console.info('onecold release success. imagePath= '+imagePath);


          } catch (error) {
            console.error('Error during metadata extraction:', error);
          }
        } else {
          console.warn('AVMetadataExtractor capability is not supported.');
        }


        if(musicName==undefined)
          musicName = file.name

        item = new VideoItem(musicName,uri ,uri,type,videoSize,addTime,undefined,fileSize,
          imagePath,artist,album,file.name)
        item.duration = duration+'';
        item.mimeType = mimeType;
        item.trackCount = trackCount;
        item.sampleRate = sampleRate;
        item.isFav = 0;
        item.playCount = 0;
        item.pyStr = pinyin4js.getShortPinyin(musicName)

        // item.lyricContent = await extractLyricsContent(uri)
        let metaItem = await parseAudioMetadata(uri)
        if(metaItem){
          item.lyricContent = metaItem.lyricContent
          item.bit_rate = formatBitrateToKbps(metaItem.bit_rate  || "0");
          item.year = metaItem.year ||'unknown'
          item.probe_score = metaItem.probe_score
          item.nb_streams = metaItem.nb_streams
          item.nb_programs = metaItem.nb_programs
        }

      })
    } catch (error) {
      console.error('uriGetAssetsFromFile failed with err: ' + JSON.stringify(error));
    }

    return item

  }


  static async  readMetaInfoFFmpeg(context:Context,inputPath: string,type:number): Promise<VideoItem> {
    return new Promise((resolve, reject) => {
      let commands = ["ffprobe", "-v", "quiet", "-print_format", "json", "-show_format", "-show_streams", inputPath];
      let outputJson = "";

      FFmpeg.execute(commands,  {
        logCallback: (logLevel: number, logMessage: string) => console.log(`[${logLevel}]${logMessage}`),
        outputCallback: (message: string) => {
          outputJson += message;
        },
      }).then(async () => {
        try {
          let videoItem:VideoItem = new VideoItem('',inputPath,inputPath,type,0,'')
          const metadata: FFprobeMetadata = JSON.parse(outputJson);
          const format = metadata.format;

          let file = fs.openSync(inputPath, fs.OpenMode.READ_ONLY | fs.OpenMode.CREATE)
          console.info('readMetaInfoFFmpeg asset file.path: ', file.path);
          videoItem = new VideoItem(file.name,inputPath,inputPath,type,0,'')
          await fs.stat(file.fd).then(async (stat: fs.Stat) => {

            // 获取音频流的采样率
            let sampleRate = '';
            if (metadata.streams  && metadata.streams.length  > 0) {
              // 查找第一个音频流
              const audioStream = metadata.streams.find(stream  => StrUtil.isNotEmpty(stream.sample_rate));
              if (audioStream&&audioStream.sample_rate)  {
                sampleRate = audioStream.sample_rate;
              }
            }

            let videoSize =  stat.size
            let fileSize = Utility.formatFSize(videoSize)
            //按照添加时间
            let addTime = Utility.getFormatDateStr(new Date(),'yyyy-MM-dd HH:mm');
            // Extract artist and title from tags
            const tags = format.tags  || {};
            let artist = tags.artist ||tags.ARTIST || '';
            let title = tags.title ||tags.TITLE || '';
            const album = tags.album ||tags.ALBUM|| '';


            if(StrUtil.isEmpty(title)){
              //自动解析像这样的获取不到元数据的 周杰伦-七里香.mp3文件
              console.log(`onecold musicName为空：${file.name}`);
              const musicData = parseMusicFileName(file.name);
              if (musicData.isValid)  {
                // console.log(`onecold 艺术家：${musicData.artist}`);   // 输出：周杰伦
                // console.log(`onecold 歌曲名：${musicData.title}`);   // 输出：七里香
                title = musicData.title
                if(artist==''||artist==undefined)
                  artist = musicData.artist
              } else {
                title = file.name
                // console.log("onecold 文件名格式不符合要求");
              }
            }

            let name: string = title;
            if (!name) {
              name = getFileNameWithoutExtension(inputPath);
            }
            // Create VideoItem
            videoItem = new VideoItem(
              name,
              inputPath, // id can be generated or left empty
              inputPath,
              type, // assuming it's local
              videoSize,
              addTime // convert to ISO string
            );

            // Set additional properties from format metadata
            videoItem.artist  = artist;
            videoItem.album  = album;
            videoItem.mimeType = format.format_name
            videoItem.sampleRate = sampleRate
            videoItem.pyStr = pinyin4js.getShortPinyin(name)
            videoItem.fileName  = FileUtil.getFileName(inputPath);
            if(format.duration)
              videoItem.duration = formatDuration(format.duration.toString()||'00:00')
            videoItem.size  = fileSize;
            videoItem.bit_rate  =formatBitrateToKbps(format.bit_rate  || "0");
            videoItem.probe_score  = format.probe_score;
            videoItem.nb_streams  = format.nb_streams;
            videoItem.nb_programs  = format.nb_programs;
            videoItem.year  = tags.TYER || tags.date ||tags.DATE|| Utility.resourceToString(context, $r('app.string.unknown')); // try different tag names for year
            videoItem.lyricContent  = tags.LYRICS || tags.lyrics  ||  tags.USLT || tags.UNSYNCEDLYRICS || '';
            videoItem.genre  = tags.genre||tags.GENRE|| Utility.resourceToString(context, $r('app.string.unknown'));
            videoItem.track  = tags.track||tags.TRACK|| Utility.resourceToString(context, $r('app.string.unknown'));
            // 检查是否有封面图片流
            const hasCover = metadata.streams.some(stream  =>
            stream.disposition?.attached_pic  === 1
            );
            console.info('readMetaInfoFFmpeg asset hasCover: ', hasCover);
            // 如果有封面图片，则提取
            if (hasCover) {

              try {
                let md5Name = await MD5.digestSync(inputPath)
                let imagePath = `${context.filesDir}${FileUtil.separator}${md5Name}.jpg`;
                console.info('readMetaInfoFFmpeg asset imagePath: ', imagePath);
                //提取封面
                await getFFmpegCover(inputPath, imagePath);
                imagePath = fileUri.getUriFromPath(imagePath)
                videoItem.pixelMapPath  = imagePath;

              } catch (error) {
                console.warn(' 提取封面图片失败:', error.message);
              }
            }

            console.info('Successfully  parsed metadata:', videoItem);
            resolve(videoItem);
          })


        } catch (error) {
          console.error('Failed  to parse metadata:', error);
          reject(new Error('Failed to parse metadata: ' + error.message));
        }
      }).catch((error: Error) => {
        console.error(`Execution  failed with error: ${error.message}`);
        reject(error);
      });
    });
  }


  private completionNum(num: number): string | number {
    if (num < 10) {
      return '0' + num;
    } else {
      return num;
    }
  }

  //根据字节获取大小
  static  formatFSize(bytes:number):string {
    const units = ['Bytes', 'K', 'M', 'G'];
    let size = bytes;
    let unitIndex = 0;
    while (size >= 1024 && unitIndex < units.length - 1) {
      size /= 1024;
      unitIndex++;
    }

    // 保留两位小数, 四舍五入
    size = Math.round(size * 10) / 10;
    return size + units[unitIndex]
  }



  static gotoMarket(context:common.UIAbilityContext,bundleName:string) {

    const want: Want = {
      uri: `store://appgallery.huawei.com/app/detail?id=${bundleName}`
    };

    context.startAbility(want).then(()=>{
      //拉起成功
    }).catch(()=>{
      // 拉起失败
    });

  }

  static async  doShare(item:VideoItem,context:common.UIAbilityContext){
    // 生成视频封面图

    const imagePackerApi: image.ImagePacker = image.createImagePacker();
    const buffer: ArrayBuffer = await (imagePackerApi.packing(await Utility.getFetchFrameByTime(item.filePath), {
      format: 'image/jpeg',
      quality: 30
    }) as Promise<ArrayBuffer>);

    // 构造ShareData，需配置一条有效数据信息
    let shareData: systemShare.SharedData = new systemShare.SharedData({
      utd: uniformTypeDescriptor.UniformDataType.MEDIA,
      uri: fileUri.getUriFromPath(item.filePath),
      title: item.name, // 不传title字段时,显示视频文件名
      // description: '好听的音乐', // 不传description字段时,显示视频大小
      thumbnail: new Uint8Array(buffer), // 优先使用传递的缩略图做预览 不传则默认使用视频第一帧画面做预览图
    });

    // 进行分享面板显示
    let controller: systemShare.ShareController = new systemShare.ShareController(shareData);
    // let context = getContext(this) as common.UIAbilityContext;
    controller.show(context, {
      selectionMode: systemShare.SelectionMode.SINGLE,
      previewMode: systemShare.SharePreviewMode.DETAIL,
    }).then(() => {
      console.info('ShareController show success.');
    }).catch((error: BusinessError) => {
      console.error(`ShareController show error. code: ${error.code}, message: ${error.message}`);
    });


  }



  //分享索引index的视频
  static async  doShareMusic(item:VideoItem,context:common.UIAbilityContext){

    // 构造ShareData，需配置一条有效数据信息
    let shareData: systemShare.SharedData = new systemShare.SharedData({
      utd: uniformTypeDescriptor.UniformDataType.AUDIO,
      uri: fileUri.getUriFromPath(item.filePath),
      title: item.name, // 不传title字段时,显示视频文件名
      description: '好听的音乐', // 不传description字段时,显示视频大小
    });

    // 进行分享面板显示
    let controller: systemShare.ShareController = new systemShare.ShareController(shareData);
    // let context = getContext(this) as common.UIAbilityContext;
    controller.show(context, {
      selectionMode: systemShare.SelectionMode.SINGLE,
      previewMode: systemShare.SharePreviewMode.DETAIL,
    }).then(() => {
      console.info('ShareController show success.');
    }).catch((error: BusinessError) => {
      console.error(`ShareController show error. code: ${error.code}, message: ${error.message}`);
    });


  }

  static getNameList(localList:Array<VideoItem>){
    let list: Array<string> = [];
    for(let i=0;i<localList.length;i++){
      if(StrUtil.isNotEmpty(localList[i].name))
        list.push(localList[i].name);
    }
    return list
  }
  //获取列表有封面的值
  static getFirstCoverFromList(localList:Array<VideoItem>):string{
    let list: Array<string> = [];
    for(let i=0;i<localList.length;i++){
      let pix = localList[i].pixelMapPath
      if(pix){
       return pix
      }

    }
    return ''
  }

  //根据type获取对应的播放列表(CommonConstants.TYPE_LOCAL：本地，CommonConstants.TYPE_Dir：私密视频)
  static getGlobalNameList(localList:Array<VideoItem>,type:number){
    let list: Array<string> = [];
    for(let i=0;i<localList.length;i++){

      if(localList[i].type === type){
        list.push(localList[i].name);
      }

    }
    return list
  }

  //根据type获取对应的播放列表(CommonConstants.TYPE_LOCAL：本地，CommonConstants.TYPE_LOCK：私密视频)
  static getGlobalList(localList:Array<VideoItem>,type:number){
    let list: Array<VideoItem> = [];
    for(let i=0;i<localList.length;i++){

      if(localList[i].type === type){
        list.push(localList[i]);
      }

    }
    return list
  }


  //根据filePath获取当前索引index
  static getCurIndexFromGlobalList(localList:Array<VideoItem>,filePath:string){
    let index: number = 0;
    for(let i=0;i<localList.length;i++){

      if(localList[i].filePath === filePath){
        index = i
        return index
      }

    }
    return index
  }


  //新的查询是否收藏的方法
  static  getIsFav(favList: Array<VideoItem>,item:VideoItem|undefined){
    if(ArrayUtil.isEmpty(favList)){
      return false
    }
    if(item===undefined){
      return false
    }
    for(let i=0;i<favList.length;i++){

      if(favList[i].filePath === item.filePath&&favList[i].isFav===1){

        return true
      }

    }
    return false
  }

  static  getIsFac(facList: Array<String>,item:VideoItem|undefined){
    if(ArrayUtil.isEmpty(facList)){
      return false
    }
    if(item===undefined){
      return false
    }
    for(let i=0;i<facList.length;i++){

      if(facList[i] === item.name||facList[i]===item.fileName){

        return true
      }

    }
    return false
  }

  static resourceToString(context:Context,resource:Resource){
    if(!context||!resource)
      return ''
    return context.resourceManager.getStringSync(resource).toString()
  }


  //根据type获取对应的播放列表(CommonConstants.TYPE_LOCAL：本地，CommonConstants.TYPE_LOCK：私密视频)
  static getGlobalMusicList(localList:Array<VideoItem>,type:number){
    let list: Array<VideoItem> = [];
    for(let i=0;i<localList.length;i++){

      if(localList[i].type === type){
        list.push(localList[i]);
      }

    }
    return list
  }


  static  isHaoFreeTime():boolean{
    if(DateUtil.isWeekend()){
      return true
    }
    let str = DateUtil.getFormatDateStr(new Date(), 'HH')
    let a = Number(str);
    if(isNaN(a))
      return false
    // ToastUtil.showToast('a='+a)
    if (a >= 8 && a <13) {//白天
      return false;
    }


    if (a >= 13 && a <20) {//白天
      return false;
    }

    if (a >= 0 && a < 8) {//凌晨
      return true;
    }
    if (a >= 20 && a <= 24) {//晚上
      return true;
    }
    return false



  }


  static getMusisBg():Resource {

    let index = RandomUtil.randomNumber(0,9)
    LogUtil.info('getMusisBg index = '+index)
    return CommonConstants.musicBgList[index]

  }

  static getMusisBg2(index:number):Resource {
    const adjustedIndex = index % 10;
    LogUtil.info('getMusisBg adjustedIndex = '+adjustedIndex)
    return CommonConstants.musicBgList[adjustedIndex]

  }




  static getParentDirectory(filePath: string): string {
    // 使用正则表达式匹配路径分隔符（支持 Unix 和 Windows）
    const lastSlashIndex = Math.max(filePath.lastIndexOf('/'), filePath.lastIndexOf('\\'));

    if (lastSlashIndex === -1) {
      return '';
    }

    return filePath.substring(0, lastSlashIndex);
  }


  static getFileDirName(filePath: string,rootPath:string): string{
    if(filePath===rootPath){
      return '首页'
    }
    let result = FileUtil.getFileName(filePath)
    if(StrUtil.isEmpty(result))
      return ''


    if(result.startsWith('.'))
      result = result.replace(/\./g, '')
    return result
  }




  // 开启沉浸式显示模式
  static async enableFullScreen() {
    const ctx = getContext()
    const win = await window.getLastWindow(ctx)
    win.setWindowLayoutFullScreen(true)
    const top = win.getWindowAvoidArea(window.AvoidAreaType.TYPE_SYSTEM)
    AppStorage.setOrCreate('topHeight', px2vp(top.topRect.height))
    AppStorage.setOrCreate('bottomHeight', px2vp(top.bottomRect.height))
  }

  // 关闭沉浸式显示模式
  static async disableFullScreen() {
    const ctx = getContext()
    const win = await window.getLastWindow(ctx)
    win.setWindowLayoutFullScreen(false)
    AppStorage.setOrCreate('topHeight', 0)
    AppStorage.setOrCreate('bottomHeight', 0)
  }

  // 设置状态栏文字颜色为白色
  static async setStatusBarLight() {
    const ctx = getContext()
    const win = await window.getLastWindow(ctx)
    win.setWindowSystemBarProperties({
      statusBarContentColor: '#ffffff'
    })
  }

  // 设置状态栏文字颜色为黑色
  static async setStatusBarDark() {
    const ctx = getContext()
    const win = await window.getLastWindow(ctx)
    win.setWindowSystemBarProperties({
      statusBarContentColor: '#000000'
    })
  }

  // 优化点：完全基于Promise链的异步处理
  static async getAppName(context: Context): Promise<string> {
    try {
      // 1. 同步化BundleInfo获取
      const bundleInfo = await bundleManager.getBundleInfoForSelf(
        bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_APPLICATION
      );

      // 2. 安全获取labelId（新增空值校验）
      const labelId = bundleInfo.appInfo?.labelId;
      if (!labelId || labelId <= 0) {
        throw new Error("Invalid labelId: " + labelId);
      }

      // 3. 异步资源解析（替换危险的getStringSync）
      return await context.resourceManager.getStringValue(labelId);

    } catch (err) {
      console.error(`[${new  Date().toISOString()}] AppName Error: CODE=${err.code},  MSG=${err.message}`);

      // 4. 多级降级策略
      return AppUtil.getBundleName()                // 最终兜底
    }
  }


  //按名称升序
  static doSortListAscending( list:Array<VideoItem>){
    let options: Intl.CollatorOptions = {
      localeMatcher: "lookup",
      usage: "sort",
      sensitivity: "case" // 区分大小写
    };

    const collator = new Intl.Collator("zh-CN", options);

    list.sort((a, b) => {
      const typeOrder = getTypeOrder(a.type) - getTypeOrder(b.type);
      if (typeOrder !== 0) {
        return typeOrder;
      }

      const partsA = extractParts(a.name);
      const partsB = extractParts(b.name);

      const nonNumericComparison = collator.compare(partsA.nonNumeric, partsB.nonNumeric);
      if (nonNumericComparison !== 0) {
        return nonNumericComparison;
      }

      return partsA.numeric - partsB.numeric;
    });
  }
  //按名称降序
  static doSortListDescending(list:Array<VideoItem>){
    const options: Intl.CollatorOptions = {
      localeMatcher: "lookup",
      usage: "sort",
      sensitivity: "case" // 区分大小写
    };

    const collator = new Intl.Collator("zh-CN", options);

    list.sort((a, b) => {
      const typeOrder = getTypeOrder(a.type) - getTypeOrder(b.type);
      if (typeOrder !== 0) {
        return typeOrder;
      }
      const partsA = extractParts(a.name);
      const partsB = extractParts(b.name);

      const nonNumericComparison = collator.compare(partsB.nonNumeric, partsA.nonNumeric);
      if (nonNumericComparison !== 0) {
        return nonNumericComparison;
      }

      return partsB.numeric - partsA.numeric;
    });
  }

  /**
   * 读取本地会员到期时间（解密.vv文件）
   * @returns
   */
  static async getLocalNobleExpireDate(): Promise<string> {
    // return "2025-08-08 12:00";
    try {
      const documentViewPicker = new picker.DocumentViewPicker()
      let documentSaveResult = await documentViewPicker.save({ pickerMode: picker.DocumentPickerMode.DOWNLOAD })
      let download_path = new fileUri.FileUri(documentSaveResult[0]).path + '/'
      let filePath = download_path + LocalMusic.STR_LOCK_VIDEO+ '/' + VipPage.VIP_FILEPATH
      let expireDate =  Utility.readDataFromFile(filePath)

      return expireDate;
    } catch (e) {
      return '';
    }
  }

  static readDataFromFile(filePath: string) {
    if(!FileUtil.accessSync(filePath)){
      return ''
    }
    let readTextOptions: ReadTextOptions = {
      offset: 0,
      length: 0,
      encoding: 'utf-8'
    };
    let stat = fileIo.statSync(filePath);
    readTextOptions.length = stat.size;
    let str = fileIo.readTextSync(filePath, readTextOptions);
    const parsedData:VipData = JSON.parse(str)  as VipData;
    // LogUtil.info('onecold parsedData.expireDate = ' + parsedData.expireDate)
    let result = Base64Util.decodeSync( parsedData.expireDate)
    // LogUtil.info('onecold 解密的result = ' +StrUtil.unit8ArrayToStr(result))
    return StrUtil.unit8ArrayToStr(result);
  }


}


interface PathStat {
  path: string;
  isDirectory: boolean;
}
async function isDirectory(filePath: string): Promise<boolean> {
  try {
    const stat = await fs.stat(filePath);
    return stat.isDirectory();
  } catch (error) {
    console.error('Error getting file stat:', error);
    return false;
  }
}

//排序模式参数
interface VideoNameParts {
  nonNumeric: string;
  numeric: number;
}

// 提取文件名中的非数字和数字部分
function extractParts(name: string): VideoNameParts {
  // Adjust the regex to handle names that start with numbers
  const match = name.match(/^(\D*?)(\d+)(\.\w+)?$/);
  if (match) {
    return {
      nonNumeric: match[1] || '', // Ensure nonNumeric is not undefined
      numeric: parseInt(match[2], 10),
    };
  }
  return {
    nonNumeric: name,
    numeric: 0,
  };
}

function getInstallTime(): number | null {
  // 从本地存储中获取安装时间
  return PreferencesUtil.getNumberSync('installTime')
}

function setInstallTime(time: number) {
  // 将安装时间存储到本地存储中
  PreferencesUtil.putSync('installTime',time)
}

function fetchAlbumCover(avMetadataExtractor: media.AVMetadataExtractor): Promise<image.PixelMap | null> {
  return new Promise((resolve, reject) => {
    avMetadataExtractor.fetchAlbumCover((error: BusinessError, pixelMap: image.PixelMap) => {
      if (error) {
        console.error(`Failed to fetch AlbumCover, error = ${JSON.stringify(error)}`);
        resolve(null);
      } else {
        resolve(pixelMap);
      }
       avMetadataExtractor.release();
    });
  });
}

//排序类型
function getTypeOrder(type: number) {
  switch (type) {
    case CommonConstants.TYPE_IS_DIR:
      return 1; // First
    case CommonConstants.TYPE_IS_CSJAD:
      return 2; // Middle
    case CommonConstants.TYPE_LOCAL:
      return 3; // Last
    default:
      return 4; // Unknown types, if any, go last
  }
}

function convertSecondsToTime(secondsStr: string): string {
  if (!secondsStr || isNaN(Number(secondsStr))) {
    return "00:00";
  }

  let seconds = parseInt(secondsStr, 10);
  seconds = Math.floor(seconds / 1000);
  const hours = Math.floor(seconds / 3600);
  const minutes = Math.floor((seconds % 3600) / 60);
  const secs = seconds % 60;

  const formatNumber = (num: number) => num.toString().padStart(2, '0');

  if (hours > 0) {
    return `${formatNumber(hours)}:${formatNumber(minutes)}:${formatNumber(secs)}`;
  } else {
    return `${formatNumber(minutes)}:${formatNumber(secs)}`;
  }
}

/**
 * 秒数 → 智能时间格式（自动选择 MM:SS 或 HH:MM:SS）
 * @param seconds 秒数字符串（如 "283.524351" 或 "3675"）
 * @param forceHHMMSS 强制使用 HH:MM:SS 格式（默认自动判断）
 * @returns 格式化后的时间字符串
 */
function formatDuration(seconds: string, forceHHMMSS: boolean = false): string {
  // 1. 校验输入
  const secNum = parseFloat(seconds);
  if (isNaN(secNum) || secNum < 0) return forceHHMMSS ? "00:00:00" : "00:00";

  // 2. 计算时间分量
  const totalSec = Math.floor(secNum);
  const hours = Math.floor(totalSec  / 3600);
  const mins = Math.floor((totalSec  % 3600) / 60);
  const secs = totalSec % 60;

  // 3. 格式化输出
  const pad = (n: number) => n.toString().padStart(2,  '0');

  return forceHHMMSS || hours > 0
    ? `${pad(hours)}:${pad(mins)}:${pad(secs)}`  // HH:MM:SS
    : `${pad(mins)}:${pad(secs)}`;              // MM:SS
}


// 定义解析结果的数据结构
class MusicInfo {
  artist: string = "";  // 艺术家名称
  title: string = "";  // 歌曲名称
  isValid: boolean = false;  // 格式是否有效
}
/**
 * 解析音乐文件名
 * @param fileName - 待解析的文件名（需包含扩展名）
 * @returns 包含解析结果的MusicInfo对象
 */
/**
 * 智能解析音乐文件名（支持多种分隔符和前缀序号）
 * @param fileName - 待解析的完整文件名
 * @returns 结构化音乐信息
 */
function parseMusicFileName(fileName: string): MusicInfo {
  const result = new MusicInfo();

  // 1. 预处理：移除首尾空格（保留中间空格）
  const cleanName = fileName.trim();

  // 2. 提取文件扩展名（以最后一个点分隔）
  const lastDotIndex = cleanName.lastIndexOf('.');
  if (lastDotIndex < 0) return result; // 无扩展名

  const baseName = cleanName.substring(0,  lastDotIndex).trim();
  const extension = cleanName.substring(lastDotIndex  + 1);

  // 3. 支持多种分隔符（中英文短横线）
  const separators = ['-', '－', '—']; // 半角/全角短横线
  let dashIndex = -1;

  // 查找最后一个有效分隔符位置
  for (const sep of separators) {
    const index = baseName.lastIndexOf(sep);
    if (index > dashIndex) dashIndex = index;
  }

  // 4. 核心解析逻辑
  if (dashIndex > 0 && dashIndex < baseName.length  - 1) {
    let artistPart = baseName.substring(0,  dashIndex).trim();
    result.title  = baseName.substring(dashIndex  + 1).trim();

    // 5. 处理前缀序号（如"04 - "）
    const numPrefixRegex = /^\d+\s*[-－—]\s*/; // 匹配数字+分隔符组合
    artistPart = artistPart.replace(numPrefixRegex,  '').trim();

    // 6. 最终有效性验证
    result.artist  = artistPart;
    result.isValid  = (result.artist.length  > 0 && result.title.length  > 0);
  }

  return result;
}

function getFileNameWithoutExtension(filePath: string): string {
  const fileName = filePath.split('/').pop()  || '';
  const lastDotIndex = fileName.lastIndexOf('.');
  return lastDotIndex > 0 ? fileName.substring(0,  lastDotIndex) : fileName;
}

/**
 * 从视频文件中提取封面
 * @param inputPath 音乐文件路径
 * @returns Promise<void>
 */
async function extractCoverImage(inputPath: string, outputPath: string): Promise<void> {
  const commands = [
    'ffmpeg',
    '-i', inputPath,
    '-an',              // 禁用音频
    '-vcodec', 'copy',  // 直接复制视频流
    '-f', 'image2',     // 强制输出为图片
    '-y',               // 覆盖输出文件
    outputPath
  ];

  return new Promise((resolve, reject) => {
    FFmpeg.execute(commands,  {
      logCallback: (logLevel: number, logMessage: string) => {
        console.log(`[${logLevel}]${logMessage}`);
      },
      outputCallback: (message: string) => {
        console.log(`FFmpeg  output: ${message}`);
      },
    }).then(() => resolve())
      .catch((error: BusinessError) => reject(error));
  });
}


/**
 * 从音乐文件中提取封面
 * @param inputPath 音乐文件路径
 * @returns Promise<void>
 */
async function getFFmpegCover(inputPath: string, outputPath: string) {
  let commands = ["ffmpeg", "-y","-i", inputPath, "-map", "0:v", "-c:v", "copy", outputPath];
  FFmpeg.execute(commands, {
    logCallback: (logLevel: number, logMessage: string) => {
      console.info(`[FFmpeg LOG] [${logLevel}]${logMessage}`)
    },
    progressCallback: (message: string) => {
      console.info(`[FFmpeg progress]${JSON.stringify(FFProgressMessageParser.parse(message))}`)
    },
  })
    .then(() => {
      console.info("FFmpeg execution succeeded.");
    })
    .catch((error: Error) => {
      console.error(`FFmpeg execution failed with error: ${error.message}`);
    });
}

/**
 * 从音乐文件中提取歌词内容
 * @param inputPath 音乐文件路径
 * @returns Promise<string> 直接返回歌词内容，若无歌词则返回空字符串
 */
async function extractLyricsContent(inputPath: string): Promise<string> {
  return new Promise(async (resolve, reject) => {
    try {
      // 1. 使用ffprobe获取元数据
      const commands = [
        'ffprobe',
        '-v', 'quiet',
        '-print_format', 'json',
        '-show_format',
        inputPath
      ];

      let outputJson = '';
      await FFmpeg.execute(commands,  {
        outputCallback: (message: string) => outputJson += message,
      });

      // 2. 解析歌词标签
      const metadata:FFprobeMetadata = JSON.parse(outputJson);
      const tags = metadata.format?.tags  || {};

      // 3. 从常见标签中查找歌词（优先级顺序）
      const lyricContent =
        tags.LYRICS ||    // 标准标签
        tags.lyrics  ||    // 小写变体
        tags.USLT ||      // ID3v2标签
        tags.UNSYNCEDLYRICS ||
          '';

      resolve(lyricContent.trim());

    } catch (error) {
      reject(`解析失败: ${error instanceof Error ? error.message  : String(error)}`);
    }
  });
}


/**
 * 解析音乐文件元数据（包含歌词和其他关键字段）
 * @param inputPath 文件路径
 * @returns Promise<VideoItem> 包含完整元数据的对象
 */
async function parseAudioMetadata(inputPath: string): Promise<VideoItem> {
  return new Promise(async (resolve, reject) => {
    try {
      // 1. 执行FFprobe命令
      const commands: string[] = [
        'ffprobe',
        '-v', 'quiet',
        '-print_format', 'json',
        '-show_format',
        '-show_streams',
        inputPath
      ];

      let outputJson = '';
      await FFmpeg.execute(commands,  {
        outputCallback: (message: string) => outputJson += message,
      });

      // 2. 解析元数据
      const metadata = JSON.parse(outputJson)  as FFprobeMetadata;
      const format:FFprobeFormat = metadata.format  ;
      const tags = format.tags||{} ;
      // 3. 构建VideoItem基础信息
      const videoItem = new VideoItem(
        tags.title  || getFileNameWithoutExtension(inputPath),
        inputPath, // id
        inputPath,
        CommonConstants.TYPE_LOCAL,
        0,
        new Date().toISOString() // 使用当前时间作为默认创建时间
      );

      // 4. 设置关键字段
      videoItem.bit_rate  = format.bit_rate  || '';
      videoItem.probe_score  = format.probe_score  || 0;
      videoItem.year  = tags.TYER || tags.date  || '';
      videoItem.lyricContent  =
        tags.LYRICS ??
        tags.lyrics  ??
        tags.USLT ??
        tags.UNSYNCEDLYRICS ??
          '';

      // 5. 设置其他可选字段
      videoItem.artist  = tags.artist  || '';
      videoItem.album  = tags.album  || '';
      videoItem.duration  = format.duration  || '';
      videoItem.nb_streams  = format.nb_streams;
      videoItem.nb_programs  = format.nb_programs;

      resolve(videoItem);

    } catch (error) {
      reject(new Error(`元数据解析失败: ${error instanceof Error ? error.message  : String(error)}`));
    }
  });
}


/**
 * 将比特率（bps）转换为 kbps 并格式化
 * @param bitRate 比特率字符串（如 "5644802"）
 * @param decimalPlaces 保留小数位数（默认0）
 * @returns 格式化后的 kbps 字符串（如 "5644 kbps"）
 */
function formatBitrateToKbps(bitRate: string, decimalPlaces: number = 0): string {
  // 1. 转换为数字
  const bitsPerSecond = parseInt(bitRate);
  if (isNaN(bitsPerSecond) || bitsPerSecond < 0) return "0 kbps";

  // 2. 计算 kbps（1 kbps = 1000 bps）
  const kbps = bitsPerSecond / 1000;

  // 3. 格式化输出
  return `${kbps.toFixed(decimalPlaces)}  kbps`;
}