import { common, ConfigurationConstant } from '@kit.AbilityKit';
import { CommonConstants } from '../common/constants/CommonConstants';
import { VideoItem } from '../viewmodel/VideoItem';
import { LazyDataSource } from '../common/util/LazyDataSource';
import { AppUtil, LogUtil, PreferencesUtil, StrUtil, ToastUtil } from '@pura/harmony-utils';
import fs from '@ohos.file.fs';
import { changeMusicCover, findLocalCoverImage, getApiLyric, repairAudioMetadata,
  searchCover,
  syncLyricToDB} from '../common/util/MusicTagUtils';
import { util } from '@kit.ArkTS';
import { extractHwMediaMetadata, FFMpegTags, Utility } from '../common/util/Utility';
import { DialogHelper } from '@pura/harmony-dialog';
import MediaTable from '../common/util/MediaTable';


// 批量乱码修正，元数据接口用华为的接口获取
@Component
export struct FixMessyView {
  private listScroller: ListScroller = new ListScroller()
  onFixResult = (_result: boolean) => {
  }

  @Link isFixMessy: boolean;
  @State bundleName: string = ''
  @State dataSource: LazyDataSource<VideoItem> = new LazyDataSource([])
  @Prop selectedFiles: Array<VideoItem>
  @StorageProp('topRectHeight') topRectHeight: number = 0;
  @State isDarkMode: boolean = false
  @StorageProp('currentColorMode') @Watch('onColorModeChange') currentMode: number =
    ConfigurationConstant.ColorMode.COLOR_MODE_LIGHT;
  @StorageProp('themeColor') themeColor: string = CommonConstants.DEFAULT_THEME_COLOR;
  context =  this.getUIContext().getHostContext() as common.UIAbilityContext
  // 新增状态用于进度显示
  @State currentProgress: number = 0;
  @State totalFiles: number = 0;
  @State currentFileIndex: number = 0;
  @State currentFileName: string = '';
  @State isEmbedding: boolean = false;
  @State embedSuccessCount: number = 0;
  @State embedFailedCount: number = 0;
  private table: MediaTable = new MediaTable(this.context);
  // 新增状态用于跟踪每个文件的嵌入状态
  @State embedStatusMap: Map<string, boolean> = new Map<string, boolean>();


  onColorModeChange() {
    this.isDarkMode = this.currentMode === ConfigurationConstant.ColorMode.COLOR_MODE_DARK
  }

  async aboutToAppear() {

    this.bundleName = AppUtil.getBundleName()
    // 确保 selectedFiles 有默认值后再初始化 dataSource
    if (this.selectedFiles && this.selectedFiles.length > 0) {
      this.dataSource = new LazyDataSource(this.selectedFiles)
    } else {
      this.dataSource = new LazyDataSource([])
    }
    await new Promise<void>((resolve, reject) => {
      this.table.getRdbStore(this.context,  (err:Error) => {
        err ? reject(err) : resolve();
      });
    });
  }



  build() {
    Column(){
      this.topTitleBar()

      this.startButton()
      this.listView()

    }
    .height('100%')
    .width('100%')
    .backgroundColor($r('app.color.index_background'))
  }

  @Builder
  listView() {
    Column(){
      List({ scroller: this.listScroller }) {
        ListItemGroup({ header: this.listHeader() }) {
          LazyForEach(this.dataSource, (item: VideoItem, index: number) => {
            ListItem() {
              Column() {
                this.MusicItem(item, index)
              }
            }
            .transition(TransitionEffect.asymmetric(
              TransitionEffect.scale({ x: 1.2, y: 1.2 }).animation({ duration: 500 }),
              TransitionEffect.scale({ x: 0, y: 0 })
            ))
            .clickEffect({ level: ClickEffectLevel.LIGHT })
          }, (item: VideoItem) => item.filePath)
        }

      }
      .cachedCount(2)
      // .layoutWeight(1)
      // .height('100%')
      .transition(TransitionEffect.asymmetric(
        TransitionEffect.scale({ x: 1.2, y: 1.2 }).animation({ duration: 500 }),
        TransitionEffect.scale({ x: 0, y: 0 })
      ))

    }
    .borderRadius(20)
    .padding({top:10,bottom:6})
    .height('auto')
    .backgroundColor($r('app.color.start_window_background'))
    .margin({top:20,right:20,left:20})
    .layoutWeight(1)
    .height('100%')
  }

  @Builder
  listHeader() {
    Stack({alignContent:Alignment.Start}){
      Text(`共${this.selectedFiles.length}首歌`)
        .fontSize(14)
        .maxLines(1)
        .textAlign(TextAlign.Start)
        .padding({ left: 25 })
        .fontColor($r('app.color.text_color'))
        .margin({bottom:6,top:4,left: 6 })
    }
    .height('auto').width('100%')
  }



  @Builder
  startButton(){
    Stack(){
      Progress({ value: this.currentProgress, total: this.totalFiles,
        type: ProgressType.Capsule }).height(55)
        .margin({top:20,right:20,left:20})
        .backgroundColor($r('app.color.index_background'))
      Button({ type: ButtonType.Capsule, stateEffect: true }) {
        Row() {
          // 菜单图标
          SymbolGlyph($r('sys.symbol.star_trophy'))// .size({ width: 22, height: 22 })
            .fontSize(22)
            .fontColor([this.themeColor])
            .alignSelf(ItemAlign.Center)
            .margin({ left: 25 })

          // 菜单标题
          Text('开始乱码修正')
            .margin({ left: 10, right: 20 })
            .fontSize(15)
            .fontWeight(480)
          Blank()
          // 右侧箭头
          Image($r('app.media.arrow_right'))
            .width(22)
            .height(22)
            .margin({ left: 0, right: 20 })
            .align(Alignment.Center)
        }
        .width('100%')
      }
      .margin({top:20,right:20,left:20})
      .height(55)
      .enabled(!this.isEmbedding)
      .backgroundColor($r('app.color.start_window_background'))
      .clickEffect({ level: ClickEffectLevel.MIDDLE,scale:0.6 })
      .onClick(()=>{
        this.startEmbed()
      })


    }

  }




  /**
   * 开始修复
   */
  async startEmbed() {
    if (this.isEmbedding || !this.selectedFiles || this.selectedFiles.length === 0) {
      return;
    }




    this.isEmbedding = true;
    this.currentProgress = 0;
    this.currentFileIndex = 0;
    this.embedSuccessCount = 0;
    this.embedFailedCount = 0;
    this.totalFiles = this.selectedFiles.length;

    // 清空之前的嵌入状态
    this.embedStatusMap = new Map<string, boolean>();

    // 创建异步任务数组
    const embedTasks = this.selectedFiles.map(async (item: VideoItem, index: number) => {
      try {
        this.currentFileIndex = index + 1;
        this.currentFileName = item.name;


        let success = true;
        let  hwTags = await extractHwMediaMetadata(item.filePath)
        let artist = hwTags?.artist|| '';
        let title = hwTags?.title|| '';
        let album = hwTags?.album|| '';
        console.info('onecold 乱码修正 artist='+artist);
        console.info('onecold 乱码修正 title='+title);
        console.info('onecold 乱码修正 album='+album);


        const metadata:FFMpegTags = {
          title: title,
          artist: artist,
          album: album,
        };

        //内嵌下标签的值，设置overwrite为true会直接修改原文件
        const result:boolean = await repairAudioMetadata(
          item.filePath,
          item.lyricContent||'',
          metadata,
          true
        );
        //入库
        if (result) {
          this.table.updateMediaInfo(item.filePath,title, artist, album,
            item.lyricContent||'','','','','','','','','', (success: boolean, error?: string) => {
              if (success) {
                console.info('onecold 乱码修正 更新库成功')
              }else{
                console.info('onecold 乱码修正  更新库失败')
              }
            });
        }


        // 更新嵌入状态
        if (item.filePath) {
          this.embedStatusMap.set(item.filePath, success);
        }

        if (success) {
          this.embedSuccessCount++;
        } else {
          this.embedFailedCount++;
        }
        // 滚动到当前处理的项目位置
        // this.listScroller.scrollToIndex(index);
        this.currentProgress = Math.floor(((index + 1) / this.totalFiles) * 100);
        return success;
      } catch (error) {
        console.error(`处理文件 ${item.name} 失败: ${JSON.stringify(error)}`);
        this.embedFailedCount++;
        return false;
      }
    });

    try {
      // 并发执行所有嵌入任务
      await Promise.all(embedTasks);
    } catch (error) {
      this.onFixResult(false)
      console.error(`批量修复过程出错: ${JSON.stringify(error)}`);
    } finally {
      ToastUtil.showToast(`修复完成: 成功 ${this.embedSuccessCount}, 失败 ${this.embedFailedCount}`)
      this.isEmbedding = false;
      this.currentProgress = 0;
      this.totalFiles = this.selectedFiles.length;
      this.onFixResult(true)
      // 可以在这里添加完成后的提示或回调
      console.info(`修复完成: 成功 ${this.embedSuccessCount}, 失败 ${this.embedFailedCount}`);
    }
  }


  @Builder
  topTitleBar() {
    // 顶部安全区和自定义标题栏
    Column() {
      // 顶部安全区
      Blank()
        .height(this.topRectHeight)
        .backgroundColor(this.isDarkMode ? $r('app.color.title_bar_bg') : this.themeColor)
        .expandSafeArea([SafeAreaType.SYSTEM], [SafeAreaEdge.TOP])
      // 自定义标题栏（Stack实现绝对居中）
      Stack() {
        // 居中标题
        Text('批量乱码修正')
          .fontSize(18)
          .fontColor(Color.White)
          .align(Alignment.Center)
        // 左右按钮
        Row() {
          Image($r('app.media.left_back_white'))
            .width(26)
            .height(26)
            .margin({ left: 12, right: 8 })
            .onClick(() => {
              this.getUIContext().animateTo({ duration: 666 }, () => {
                // 动画闭包内控制Image组件的出现和消失
                this.isFixMessy = !this.isFixMessy
              })
            })
          Blank().flexGrow(1)
          Blank().width(32)
        }
        .height(48)
        .width('100%')
        .alignItems(VerticalAlign.Center)
      }
      .height(48)
      .width('100%')
      .backgroundColor(this.isDarkMode ? $r('app.color.title_bar_bg') : this.themeColor)
    }
  }

  @Builder
  private MusicItem(item: VideoItem, index?: number) {
    Button({ type: ButtonType.Normal, stateEffect: true }) {
      Column() {
        Row() {
          SymbolGlyph($r('sys.symbol.music'))
            .fontSize(20)
            .fontColor([this.themeColor])
            .alignSelf(ItemAlign.Center)
            .padding({ left: 25 })
          Text(item.name)
            .fontSize(14)
            .maxLines(1)
            .padding({ left: 5 })
            .textOverflow({ overflow: TextOverflow.MARQUEE })
            .animation({
              duration: 555,
              curve: 'Linear',
            })
            .fontColor(Color.Gray)
            .margin({ left: 8 })
          Blank()
          // 根据嵌入状态显示勾选图标
          SymbolGlyph($r('sys.symbol.checkmark_circle'))
            .fontSize(20)
            .fontColor([this.themeColor])
            .alignSelf(ItemAlign.Center)
            .padding({ right: 25 })
            .animation({
              duration: 666,
              curve: 'ease-in-out' // 可选动画曲线
            })
            .visibility(this.embedStatusMap.get(item.filePath)?Visibility.Visible:Visibility.None)

        }
        .layoutWeight(1)
        .height('100%')
        .width('100%')

      }
    }
    .backgroundColor(Color.Transparent)
    .width('100%')
    .height(40)
  }
}