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1/*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16import UserFileManager from '@ohos.filemanagement.userFileManager';
17import dataSharePredicates from '@ohos.data.dataSharePredicates';
18import image from '@ohos.multimedia.image';
19import { Log } from '../utils/Log';
20import { GlobalContext } from '../utils/GlobalContext';
21
22const TAG = '[ThumbnailGetter]:';
23
24export default class ThumbnailGetter {
25  private mUserFileManager: UserFileManager.UserFileManager;
26  private mCameraAlbum: UserFileManager.Album;
27  private mRecentFileUri: string = '';
28
29  public async getThumbnailInfo(width: number, height: number, uri?: string): Promise<PixelMap | undefined> {
30    this.mUserFileManager = UserFileManager.getUserFileMgr(GlobalContext.get().getCameraAbilityContext());
31    Log.info(`${TAG} getThumbnailInfo E width: ${width}, height: ${height}, uri: ${uri}`);
32    Log.info(`${TAG} getThumbnailInfo E`);
33    const fileAsset: UserFileManager.FileAsset = await this.getLastFileAsset();
34    if (!fileAsset) {
35      Log.info(`${TAG} getThumbnailInfo getLastFileAsset error: fileAsset undefined.`);
36      return undefined;
37    }
38    let thumbnailPixelMap: image.PixelMap = <image.PixelMap> await fileAsset.getThumbnail({
39      width: width, height: height
40      // @ts-ignore
41    }).catch(e => {
42      Log.error(`${TAG} getThumbnail error: ${JSON.stringify(e)}`);
43    });
44    if (thumbnailPixelMap === undefined) {
45      Log.info(`${TAG} getThumbnail successful ` + thumbnailPixelMap);
46    } else {
47      Log.info(`${TAG} getThumbnail fail`);
48    }
49    Log.info(`${TAG} getThumbnailInfo X`);
50    return thumbnailPixelMap;
51  }
52
53  public async getLastFileAsset(): Promise<UserFileManager.FileAsset> {
54    let predicates = new dataSharePredicates.DataSharePredicates();
55    predicates.orderByDesc('date_added').limit(1, 0);
56    let fetchOptions = {
57      fetchColumns: ['date_added'],
58      predicates: predicates,
59    };
60    Log.info(`${TAG} getLastFileAsset fetchOp: ${JSON.stringify(fetchOptions)}`);
61    return this.getFileAssetByFetchOp(fetchOptions);
62  }
63
64  public getRecentFileUri(): string {
65    return this.mRecentFileUri;
66  }
67
68  public async getFileAssetByFetchOp(fetchOp): Promise<UserFileManager.FileAsset> {
69    let fetchResult;
70    let fileAsset;
71    try {
72      await this.createCameraAlbum();
73      fetchResult = await this.mCameraAlbum?.getPhotoAssets(fetchOp);
74      if (fetchResult !== undefined) {
75        Log.info(`${TAG} getFileAssetByFetchOp fetchResult success`);
76        fileAsset = await fetchResult.getLastObject();
77        if (fileAsset !== undefined) {
78          Log.info(`${TAG} getFileAssetByFetchOp fileAsset.displayName : ${JSON.stringify(fileAsset.displayName)}`);
79        }
80      }
81    } catch (e) {
82      Log.error(`${TAG} getFileAssetByFetchOp get fileAsset error: ${JSON.stringify(e)}`);
83    } finally {
84      fetchResult.close();
85    }
86    this.mRecentFileUri = fileAsset?.uri;
87    Log.info(`${TAG} mRecentFileUri : ${JSON.stringify(this.mRecentFileUri)}`);
88    return fileAsset;
89  }
90
91  private async createCameraAlbum(): Promise<void> {
92    Log.log(`${TAG} createCameraAlbum E`);
93    if (!this.mCameraAlbum) {
94      let fetchResult =
95        await this.mUserFileManager?.getAlbums(UserFileManager.AlbumType.SYSTEM, UserFileManager.AlbumSubType.CAMERA);
96      this.mCameraAlbum = await fetchResult?.getFirstObject();
97      Log.log(`${TAG} createCameraAlbum albumUri: ${JSON.stringify(this.mCameraAlbum.albumUri)}`);
98    }
99    Log.log(`${TAG} createCameraAlbum X`);
100  }
101}