subject-two/entry/src/main/ets/common/service/FileHelper.ts

/*
* Copyright (c) 2023 Shenzhen Kaihong Digital Industry Development Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

// @ts-ignore
import photoAccessHelper from '@ohos.file.photoAccessHelper'
import dataSharePredicates from '@ohos.data.dataSharePredicates'
import mediaLibrary from '@ohos.multimedia.mediaLibrary'

export class FileHelper {

  private userFileMgr: photoAccessHelper.PhotoAccessHelper = undefined;
  FILE_ASSET_FETCH_COLUMNS = [photoAccessHelper.PhotoKeys.URI,
    photoAccessHelper.PhotoKeys.PHOTO_TYPE,
    photoAccessHelper.PhotoKeys.DISPLAY_NAME,
    photoAccessHelper.PhotoKeys.SIZE,
    photoAccessHelper.PhotoKeys.DATE_ADDED,
    photoAccessHelper.PhotoKeys.DATE_MODIFIED,
    photoAccessHelper.PhotoKeys.DURATION,
    photoAccessHelper.PhotoKeys.WIDTH,
    photoAccessHelper.PhotoKeys.HEIGHT,
    photoAccessHelper.PhotoKeys.DATE_TAKEN,
    photoAccessHelper.PhotoKeys.ORIENTATION,
    photoAccessHelper.PhotoKeys.FAVORITE,
    photoAccessHelper.PhotoKeys.TITLE,
    photoAccessHelper.PhotoKeys.POSITION,
    photoAccessHelper.PhotoKeys.DATE_TRASHED,
    photoAccessHelper.PhotoKeys.HIDDEN];
  constructor() {
    this.userFileMgr = photoAccessHelper.getPhotoAccessHelper(globalThis.context);
  }

  public async queryPhotoByDisplayName(displayName)
  {
    console.log( 'baoyihu queryPhotoByDisplayName begin DISPLAY_NAME:' +displayName );
    try {
      let predicates = new dataSharePredicates.DataSharePredicates();
      predicates.equalTo(photoAccessHelper.PhotoKeys.DISPLAY_NAME, displayName)
      let fetchOptions = {
        fetchColumns: this.FILE_ASSET_FETCH_COLUMNS,
        predicates: predicates
      };
      let assetsResult = await this.userFileMgr.getAssets(fetchOptions);

      let retCount = assetsResult.getCount();
      console.log( 'baoyihu queryPhotoByDisplayName count: '+retCount );
      if (retCount > 0) {
        let asset = await assetsResult.getFirstObject();
        console.log( 'baoyihu queryPhotoByDisplayName one asset uri : ' + asset.uri +', photoType : '+asset.photoType+', displayName : '+asset.displayName);
        console.log( 'baoyihu queryPhotoByDisplayName success ' );
      }
    } catch (err) {
      console.log( 'baoyihu queryPhotoByDisplayName failed with err: ' + err);
    } finally {
    }
  }

  async getUserAlbumItemByDisplayName(displayName: string): Promise<photoAccessHelper.Album> {
    let fetchResult: photoAccessHelper.FetchResult<photoAccessHelper.Album> = null
    let album: photoAccessHelper.Album = null
    try {
      console.log( 'getUserAlbumItemByDisplayName');
      let predicates = new dataSharePredicates.DataSharePredicates();
      predicates.equalTo(photoAccessHelper.AlbumKeys.ALBUM_NAME, displayName)
      let fetchOptions = {
        fetchColumns: [],
        predicates: predicates
      };
      fetchResult = await this.userFileMgr.getAlbums(photoAccessHelper.AlbumType.USER, photoAccessHelper.AlbumSubtype.USER_GENERIC, fetchOptions );
      console.log( 'get getUserAlbumItemByDisplayName, count: ' + fetchResult.getCount());
      if (fetchResult.getCount() > 0) {
        album = await fetchResult.getFirstObject();
      }
    } catch (err) {
      console.log( 'get Album fetchResult failed with err: ' + err);
    } finally {
      if (fetchResult != null) {
        fetchResult.close();
      }
    }
    return album;
  }

  public async addAssetToAlbum(albumName,file_uri)
  {
    console.log( 'baoyihu addAssetToAlbum begin albumName '+albumName+', file_uri:' +file_uri);
    try {
      let album = await this.getUserAlbumItemByDisplayName(albumName);
      let predicates = new dataSharePredicates.DataSharePredicates();
      predicates.equalTo(photoAccessHelper.PhotoKeys.URI, file_uri)
      let fetchOptions = {
        fetchColumns: this.FILE_ASSET_FETCH_COLUMNS,
        predicates: predicates
      };
      let assetsResult = await this.userFileMgr.getAssets(fetchOptions);

      if (assetsResult.getCount() > 0) {
        let asset = await assetsResult.getFirstObject();
        console.log( 'baoyihu addAssetToAlbum one asset uri : ' + asset.uri +', photoType : '+asset.photoType+', displayName : '+asset.displayName);
        await album.addAssets([asset]);
        console.log( 'baoyihu addAssetToAlbum success ' );
      }
    } catch (err) {
      console.log( 'baoyihu addAssetToAlbum failed with err: ' + err);
    } finally {
    }
  }

  public async deleteFileOfAlbum(album_Name,file_type): Promise<void> {
    console.log('baoyihu deletePictureOfAlbum album_Name：'+album_Name);
    var photoFetchResult =null;
    try {
      let album = await this.getUserAlbumItemByName(album_Name);
      let predicates = new dataSharePredicates.DataSharePredicates();
      predicates.equalTo(photoAccessHelper.PhotoKeys.PHOTO_TYPE, file_type)
      let fetchOptions = {
        fetchColumns: this.FILE_ASSET_FETCH_COLUMNS,
        predicates: predicates
      };
      photoFetchResult = await album.getAssets(fetchOptions)
      var all_fileAsset = await photoFetchResult.getAllObjects();

      var uri_array=[]
      console.log( 'baoyihu deletePictureOfAlbum iterator begin',album_Name );
      for (let onfile of all_fileAsset)
      {
        console.log(album_Name, 'baoyihu deletePictureOfAlbum uri : ' + onfile.uri +', photoType : '+onfile.photoType+', displayName : '+onfile.displayName);
        uri_array.push(onfile.uri);
      }
      await this.userFileMgr.deleteAssets(uri_array);

      let albumFetchResult = null;
      try {
        albumFetchResult = await this.userFileMgr.getAlbums(photoAccessHelper.AlbumType.SYSTEM, photoAccessHelper.AlbumSubtype.TRASH);

        let trashAlbum = await albumFetchResult.getFirstObject();
        trashAlbum.deleteAssets(all_fileAsset).then(() => {
          console.log('baoyihu deletePictureOfAlbum trash ok : ',album_Name);
        }).catch((err) => {
          console.log('baoyihu deletePictureOfAlbum trash faild : ',album_Name);
        });
      }catch (err) {
        console.log('baoyihu deletePictureOfAlbum error: '+err,album_Name);
      } finally {
        if (albumFetchResult != null) {
          albumFetchResult.close();
        }
      }

      console.log( 'baoyihu deletePictureOfAlbum delete end',album_Name );
    } catch (err) {
      console.log( 'baoyihu deletePictureOfAlbum failed with err: ' + err,album_Name);
    } finally {
      if (photoFetchResult != null) {
        photoFetchResult.close();
      }
    }
  }

  public async deleteAllPictures(): Promise<void> {
    console.log('baoyihu deleteAllPictures');
    let photoFetchResult = null;
    try {
      let predicates = new dataSharePredicates.DataSharePredicates();
      let fetchOptions = {
        fetchColumns: this.FILE_ASSET_FETCH_COLUMNS,
        predicates: predicates
      };
      photoFetchResult = await this.userFileMgr.getAssets(fetchOptions);

      var all_fileAsset = await photoFetchResult.getAllObjects();
      var uri_array=[]
      console.log( 'baoyihu batch delete begin' );
      for (let onfile of all_fileAsset)
      {
        console.log( 'baoyihu push one uri : ' + onfile.uri +', photoType : '+onfile.photoType+', displayName : '+onfile.displayName +', file_size: '+onfile.size);
        uri_array.push(onfile.uri);
      }
      // await album.removeAssets(all_fileAsset);
      await this.userFileMgr.deleteAssets(uri_array);
      console.log( 'baoyihu batch delete end' );
    } catch (err) {
      console.log( 'baoyihu get Album getPhotoAssets failed with err: ' + err);
    } finally {
      if (photoFetchResult != null) {
        photoFetchResult.close();
      }
    }
  }
  //
  // async getUserAlbumItemByUri(uri: string): Promise<photoAccessHelper.Album> {
  // let fetchResult: photoAccessHelper.FetchResult<photoAccessHelper.Album> = null
  // let album: photoAccessHelper.Album = null
  // try {
  // console.log( 'getUserAlbumItemByUri');
  // let predicates = new dataSharePredicates.DataSharePredicates();
  // predicates.equalTo(photoAccessHelper.AlbumKeys.URI, uri)
  // let fetchOptions = {
  // fetchColumns: [],
  // predicates: predicates
  // };
  // fetchResult = await this.userFileMgr.getAlbums(photoAccessHelper.AlbumType.USER, photoAccessHelper.AlbumSubtype.USER_GENERIC, fetchOptions );
  // console.log( 'get Album fetchResult, count: ' + fetchResult.getCount());
  // if (fetchResult.getCount() > 0) {
  // album = await fetchResult.getFirstObject();
  // }
  // } catch (err) {
  // console.log( 'get Album fetchResult failed with err: ' + err);
  // } finally {
  // if (fetchResult != null) {
  // fetchResult.close();
  // }
  // }
  // return album;
  // }

  async getUserAlbumItemByName(albumName: string): Promise<photoAccessHelper.Album> {
    let fetchResult: photoAccessHelper.FetchResult<photoAccessHelper.Album> = null
    let album: photoAccessHelper.Album = null
    try {
      console.log( 'getUserAlbumItemByName');
      let predicates = new dataSharePredicates.DataSharePredicates();
      predicates.equalTo(photoAccessHelper.AlbumKeys.ALBUM_NAME, albumName)
      let fetchOptions = {
        fetchColumns: [],
        predicates: predicates
      };
      fetchResult = await this.userFileMgr.getAlbums(photoAccessHelper.AlbumType.USER, photoAccessHelper.AlbumSubtype.USER_GENERIC, fetchOptions );
      console.log( 'get getUserAlbumItemByName, count: ' + fetchResult.getCount());
      if (fetchResult.getCount() > 0) {
        album = await fetchResult.getFirstObject();
        console.log( 'getUserAlbumItemByName uri: ' + album.albumUri+',albumName: ' + album.albumName);
      }
    } catch (err) {
      console.log( 'getUserAlbumItemByName failed with err: ' + err);
    } finally {
      if (fetchResult != null) {
        fetchResult.close();
      }
    }
    return album;
  }


  public async createAlbum(albumName):Promise<string>
  {
    try {
      console.log( "baoyihu createAlbum beging");
      let albumAsset = await this.userFileMgr.createAlbum(albumName);
      console.log( 'baoyihu createAlbum success, albumType: ' + albumAsset.albumType +', albumSubtype: '+ albumAsset.albumSubtype
        +', albumName: '+ albumAsset.albumName +', albumUri: '+ albumAsset.albumUri +', coverUri: ' + albumAsset.coverUri);
      return albumAsset.albumUri ;
    } catch (err) {
      console.log( 'baoyihu createAlbum failed with err: ' + err);
    } finally {
    }
  }


  public async createPhotoAsset(type: photoAccessHelper.AlbumType, subType: photoAccessHelper.AlbumSubtype ): Promise<void>
  {
    console.log( 'baoyihu createPhotoAsset enter ');
    try {
      let createOptions = { subtype: photoAccessHelper.PhotoSubtype.SCREENSHOT};
      await this.userFileMgr.createAsset("picture2.jpg", createOptions,(err,photoResult)=>{
        console.log( 'baoyihu createPhotoAsset return uri: ' + photoResult.uri +', photoType: '+ photoResult.photoType
          +', displayName: '+ photoResult.displayName );
      });
    } catch (err) {
      console.log( 'baoyihu createPhotoAsset failed with err: ' + err);
    } finally {
    }
  }

  public async queryAlbum(type: photoAccessHelper.AlbumType, subType: photoAccessHelper.AlbumSubtype ):Promise<string>
  {

    let firstUri = "";
    let fetchResult:photoAccessHelper.FetchResult<photoAccessHelper.Album> = null;
    try {
      fetchResult = await this.userFileMgr.getAlbums(type, subType);
      console.log( 'baoyihu queryAlbum success count: ' + fetchResult.getCount());
      for (let i = 0; i < fetchResult.getCount(); i++)
      {
        let albumAsset:photoAccessHelper.Album = await fetchResult.getObjectByPosition(i);
        console.log( 'queryAlbum albumType: ' + albumAsset.albumType +', Subtype: '+ albumAsset.albumSubtype
          +', Name: '+ albumAsset.albumName +', Uri: '+ albumAsset.albumUri +', coverUri: '+ albumAsset.coverUri);

        let predicates = new dataSharePredicates.DataSharePredicates();
        let fetchOptions = {
          fetchColumns: this.FILE_ASSET_FETCH_COLUMNS,
          predicates: predicates
        };
        let photoFetchResult = await albumAsset.getAssets(fetchOptions);
        let count = photoFetchResult.getCount();
        console.log( 'baoyihu queryAlbum photoFetchResult count: ' + count);
        var all_fileAsset = await photoFetchResult.getAllObjects();
        // var uri_array=[]

        for (let onfile of all_fileAsset)
        {
          console.log( 'baoyihu queryAlbum one uri : ' + onfile.uri);
          firstUri = onfile.uri;
          // uri_array.push(onfile.uri);
        }

      }
      console.log( 'baoyihu queryAlbum return asser:' + firstUri);

    } catch (err) {
      console.log( 'baoyihu queryAlbum failed with err: ' + err);
    } finally {
      if (fetchResult != null) {
        fetchResult.close();
      }
    }
    return new Promise((resolve, reject) => {
      console.log( 'baoyihu queryAlbum before resolve:' + firstUri);
      resolve(firstUri)
    })

  }
  public async deleteAllVideos(type: photoAccessHelper.AlbumType, subType: photoAccessHelper.AlbumSubtype ): Promise<void> {
    let fetchResult:photoAccessHelper.FetchResult<photoAccessHelper.Album> = null;
    try {
      fetchResult = await this.userFileMgr.getAlbums(type, subType);
      console.log( 'baoyihu_ get Album fetchResult, count: ' + fetchResult.getCount());
      for (let i = 0; i < fetchResult.getCount(); i++)
      {
        let albumAsset:photoAccessHelper.Album = await fetchResult.getObjectByPosition(i);
        let photoFetchResult:photoAccessHelper.FetchResult<photoAccessHelper.PhotoAsset> = null;
        let count = 0;
        console.log( 'baoyihu_ get one Album name : ' + albumAsset.albumName);
        try {
          let predicates = new dataSharePredicates.DataSharePredicates();
          let fetchOptions = {
            fetchColumns: this.FILE_ASSET_FETCH_COLUMNS,
            predicates: predicates
          };

          photoFetchResult = await albumAsset.getAssets(fetchOptions);
          count = photoFetchResult.getCount();
          console.log( 'baoyihu_ photoFetchResult count: ' + count);
          var all_fileAsset = await photoFetchResult.getAllObjects();
          /*
          var uri_array=[]
          console.log( 'baoyihu batch delete begin' );
          for (let onfile of all_fileAsset)
          {
          console.log( 'baoyihu push one uri : ' + onfile.uri);
          uri_array.push(onfile.uri);
          }
          * */
          await albumAsset.removeAssets(all_fileAsset);
          //await this.userFileMgr.deleteAssets(uri_array);

          console.log( 'baoyihu_ batch delete end' );
        } catch (err) {
          console.log( 'baoyihu_ get Album getPhotoAssets failed with err: ' + err);
        } finally {
          if (photoFetchResult != null) {
            photoFetchResult.close();
          }
        }
      }
    } catch (err) {
      console.log( 'baoyihu_ get Album fetchResult failed with err: ' + err);
    } finally {
      if (fetchResult != null) {
        fetchResult.close();
      }
    }
  }
}