• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 data_rdb from '@ohos.data.rdb';
18import CalendarDataHelper from '../../utils/CalendarDataHelper';
19import { CalendarMetaDataColumns } from '@ohos/datastructure/src/main/ets/calendarmetadata/CalendarMetaDataColumns'
20import { Log } from '@ohos/common/src/main/ets/utils/Log'
21
22const TAG = 'ExpandRangeManager'
23
24// CalendarMetaData表唯一的数据ID，只允许存在一条记录
25const UNIQUE_ID = 1
26
27/**
28 * CalendarMetaData表对应数据的缓存类
29 *
30 * @since 2022-05-28
31 */
32class CalendarMetaData {
33  timeZone: string
34
35  expandedBegin: number
36
37  expandedEnd: number
38
39  isOnceRead: boolean
40
41  private static instance: CalendarMetaData
42
43  public static getInstance(): CalendarMetaData {
44    if (!CalendarMetaData.instance) {
45      CalendarMetaData.instance = new CalendarMetaData()
46    }
47    return CalendarMetaData.instance;
48  }
49}
50
51/**
52 * 是否在已扩展时间范围内
53 *
54 * @param begin 开始时间
55 * @param end 结束时间
56 */
57export async function isInExpandedRange(begin: number, end: number): Promise<boolean> {
58  const expandedBegin = await getExpandedBegin()
59  const expandedEnd = await getExpandedEnd()
60  return begin >= expandedBegin && end <= expandedEnd
61}
62
63/**
64 * 更新已扩展范围
65 *
66 * @param begin 开始时间，比原先开始时间小才更新
67 * @param end 结束时间，比原先结束时间大才更新
68 */
69export function updateExpandedRange(begin: number, end: number) {
70  const metaData = CalendarMetaData.getInstance()
71  if (begin >= metaData.expandedBegin && end <= metaData.expandedEnd) {
72    Log.info(TAG, "no need to updateExpandedRange")
73    return
74  }
75  if (begin < metaData.expandedBegin || metaData.expandedBegin === 0) {
76    metaData.expandedBegin = begin
77  }
78  if (end > metaData.expandedEnd || metaData.expandedEnd === 0) {
79    metaData.expandedEnd = end
80  }
81
82  CalendarDataHelper.getInstance().getRdbStore().then((rdb) => {
83    const contentValues: data_rdb.ValuesBucket = {
84      "minInstance": metaData.expandedBegin,
85      "maxInstance": metaData.expandedEnd
86    }
87    try {
88      rdb.update(contentValues, getPredicates())
89    } catch (err) {
90      Log.error(TAG, 'updateExpandedRange get some err')
91    }
92  })
93}
94
95/**
96 * 重置已扩展时间范围
97 */
98export function resetExpandedRange() {
99  const manager = CalendarMetaData.getInstance()
100  manager.isOnceRead = false
101  manager.expandedBegin = 0
102  manager.expandedEnd = 0
103  updateExpandedRange(0, 0)
104}
105
106/**
107 * 获取已扩展的开始时间
108 */
109export async function getExpandedBegin(): Promise<number> {
110  const metaData = CalendarMetaData.getInstance()
111  if (metaData.isOnceRead) {
112    return metaData.expandedBegin
113  }
114  await readFromDb()
115  return metaData.expandedBegin
116}
117
118/**
119 * 获取已扩展的结束时间
120 */
121export async function getExpandedEnd(): Promise<number> {
122  const metaData = CalendarMetaData.getInstance()
123  if (metaData.isOnceRead) {
124    return metaData.expandedEnd
125  }
126  await readFromDb()
127  return metaData.expandedEnd
128}
129
130async function readFromDb() {
131  Log.debug(TAG, "readFromDb begin")
132  const rdb = await CalendarDataHelper.getInstance().getRdbStore()
133  const columns = [CalendarMetaDataColumns.MIN_INSTANCE, CalendarMetaDataColumns.MAX_INSTANCE, CalendarMetaDataColumns.LOCAL_TIME_ZONE]
134  let resultSet = undefined
135  try {
136    resultSet = await rdb.query(getPredicates(), columns)
137  } catch (err) {
138    Log.error(TAG, 'readFromDb get some err')
139  }
140  Log.debug(TAG, `readFromDb resultSet:${resultSet}`)
141  if (resultSet !== null && resultSet != undefined && resultSet.goToFirstRow()) {
142    const metaData = CalendarMetaData.getInstance()
143    metaData.timeZone = resultSet.getString(resultSet.getColumnIndex(CalendarMetaDataColumns.LOCAL_TIME_ZONE))
144    metaData.expandedBegin = resultSet.getLong(resultSet.getColumnIndex(CalendarMetaDataColumns.MIN_INSTANCE))
145    metaData.expandedEnd = resultSet.getLong(resultSet.getColumnIndex(CalendarMetaDataColumns.MAX_INSTANCE))
146    metaData.isOnceRead = true
147    Log.debug(TAG, "readFromDb parse data successful")
148  } else {
149    await initMetaDataValue(rdb)
150  }
151  Log.debug(TAG, "readFromDb end")
152}
153
154async function initMetaDataValue(rdb: data_rdb.RdbStore) {
155  Log.info(TAG, "initMetaDataValue begin")
156  const metaData = CalendarMetaData.getInstance()
157  metaData.timeZone = ''
158  metaData.expandedBegin = 0
159  metaData.expandedEnd = 0
160  const contentValues = {
161    "_id": UNIQUE_ID,
162    "localTimeZone": '',
163    "minInstance": metaData.expandedBegin,
164    "maxInstance": metaData.expandedEnd
165  }
166  try {
167    const rowId = await rdb.insert(CalendarMetaDataColumns.TABLE_NAME, contentValues)
168    if (rowId < 0) {
169      Log.warn(TAG, "initMetaDataValue failed")
170    } else {
171      metaData.isOnceRead = true
172      Log.info(TAG, "initMetaDataValue end")
173    }
174  } catch (err) {
175    Log.error(TAG, 'initMetaDataValue get some err')
176  }
177}
178
179function getPredicates(): data_rdb.RdbPredicates {
180  return new data_rdb.RdbPredicates(CalendarMetaDataColumns.TABLE_NAME).equalTo(CalendarMetaDataColumns.ID, UNIQUE_ID)
181}