subject-two/entry/src/main/ets/utils/FileHelp.ets

import photoAccessHelper from '@ohos.file.photoAccessHelper';
import dataSharePredicates from '@ohos.data.dataSharePredicates';
import common from '@ohos.app.ability.common';
import { BusinessError } from '@ohos.base';

export class FileHelper {
  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
  ];
  private userFileMgr: photoAccessHelper.PhotoAccessHelper = undefined;

  constructor() {
    const context: common.UIAbilityContext = AppStorage.get('context')
    this.userFileMgr = photoAccessHelper.getPhotoAccessHelper(context);
  }

  public async queryPhotoByDisplayName(displayName: string) {
    console.log('baoyihu queryPhotoByDisplayName begin DISPLAY_NAME:' + displayName);
    try {
      let predicates = new dataSharePredicates.DataSharePredicates();
      predicates.equalTo(photoAccessHelper.PhotoKeys.DISPLAY_NAME, displayName)
      let fetchOptions: photoAccessHelper.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: photoAccessHelper.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: string, file_uri: string) {
    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: photoAccessHelper.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: string, file_type: number | string | boolean): Promise<void> {
    console.log('baoyihu deletePictureOfAlbum album_Name：' + album_Name);
    let photoFetchResult: photoAccessHelper.FetchResult<photoAccessHelper.PhotoAsset> = null;
    try {
      let album = await this.getUserAlbumItemByName(album_Name);
      let predicates = new dataSharePredicates.DataSharePredicates();
      predicates.equalTo(photoAccessHelper.PhotoKeys.PHOTO_TYPE, file_type)
      let fetchOptions: photoAccessHelper.FetchOptions = {
        fetchColumns: this.FILE_ASSET_FETCH_COLUMNS,
        predicates: predicates
      };
      photoFetchResult = await album.getAssets(fetchOptions)
      let all_fileAsset = await photoFetchResult.getAllObjects();

      let uri_array: string[] = []
      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: photoAccessHelper.FetchResult<photoAccessHelper.Album> = 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: BusinessError) => {
          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: photoAccessHelper.FetchResult<photoAccessHelper.PhotoAsset> = null;
    try {
      let predicates = new dataSharePredicates.DataSharePredicates();
      let fetchOptions: photoAccessHelper.FetchOptions = {
        fetchColumns: this.FILE_ASSET_FETCH_COLUMNS,
        predicates: predicates
      };
      photoFetchResult = await this.userFileMgr.getAssets(fetchOptions);

      let all_fileAsset = await photoFetchResult.getAllObjects();
      let uri_array: string[] = []
      console.log('baoyihu batch delete begin');
      for (let onfile of all_fileAsset) {
        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: photoAccessHelper.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: string): 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: photoAccessHelper.PhotoCreateOptions = { 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: photoAccessHelper.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);
        let 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: photoAccessHelper.FetchOptions = {
            fetchColumns: this.FILE_ASSET_FETCH_COLUMNS,
            predicates: predicates
          };

          photoFetchResult = await albumAsset.getAssets(fetchOptions);
          count = photoFetchResult.getCount();
          console.log('baoyihu_ photoFetchResult count: ' + count);
          let 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();
      }
    }
  }
}