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1/**
2 * @file Describe the file
3 * Copyright (c) 2023 Huawei Device Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17import { Constants } from '@ohos/datastructure/src/main/ets/Constants';
18import {
19  CalendarsColumns,
20  DEFAULT_CALENDAR_VALUE
21} from '@ohos/datastructure/src/main/ets/calendars/CalendarsColumns';
22
23const TAG = 'DatabaseProcessorHelper';
24
25/**
26 * 初始化数据中的 creator。保护 creator 字段无法被应用自定义插入
27 *
28 * @param values 插入的数据
29 * @param creator 调用接口的应用
30 */
31export function initValueCreator(values, creator) {
32  values[Constants.CREATOR] = creator;
33}
34
35/**
36 * 低级别权限下无法操作其他应用的账户。接口的 predicates 中带上其他应用的信息会冲突，无法进行操作
37 *
38 * @param predicates
39 * @param creator 调用接口的应用
40 */
41export function initPredicateCreator(predicates, creator) {
42  predicates.equalTo(Constants.CREATOR, creator);
43}
44
45/**
46 * 低权限只能查找默认账户和自己应用下的账户。接口的 predicates 中带上应用的信息会冲突，无法进行操作
47 *
48 * @param predicates
49 * @param creator 调用接口的应用
50 */
51export function initPredicateDefaultAndOwnCreator(predicates, creator) {
52  predicates.beginWrap()
53    .equalTo(Constants.CREATOR, creator)
54    .or()
55    .beginWrap()
56    .equalTo(CalendarsColumns.ACCOUNT_TYPE, DEFAULT_CALENDAR_VALUE.account_type)
57    .and()
58    .equalTo(CalendarsColumns.ACCOUNT_NAME, DEFAULT_CALENDAR_VALUE.account_name)
59    .and()
60    .equalTo(Constants.CREATOR, DEFAULT_CALENDAR_VALUE.creator)
61    .endWrap()
62    .endWrap();
63}
64
65/**
66 * 删除数据中的 creator 字段。保护 creator 字段无法被修改
67 *
68 * @param values 更新的数据
69 */
70export function deleteValueCreator(values) {
71  if (Object.hasOwnProperty.call(values, Constants.CREATOR)) {
72    Reflect.deleteProperty(values, Constants.CREATOR);
73  }
74}
75
76/**
77 * 保护默认账户无法被修改和删除。接口的 predicates 中带上默认账户的信息会冲突，无法进行操作
78 *
79 * @param predicates
80 */
81export function initPredicateDefaultCalendarProtect(predicates) {
82  predicates.beginWrap()
83    .notEqualTo(CalendarsColumns.ACCOUNT_TYPE, DEFAULT_CALENDAR_VALUE.account_type)
84    .or()
85    .notEqualTo(CalendarsColumns.ACCOUNT_NAME, DEFAULT_CALENDAR_VALUE.account_name)
86    .or()
87    .notEqualTo(Constants.CREATOR, DEFAULT_CALENDAR_VALUE.creator)
88    .endWrap();
89}