1/*
2 * Copyright (c) 2021 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
16#include "base/utils/time_util.h"
17
18#include <iomanip>
19#include <sstream>
20#include <sys/time.h>
21#include "base/utils/utils.h"
22
23namespace OHOS::Ace {
24namespace {
25
26constexpr int64_t SEC_TO_MICROSEC = 1000000;
27constexpr int64_t SEC_TO_NANOSEC = 1000000000;
28constexpr int64_t MICROSEC_TO_NANOSEC = 1000;
29constexpr int64_t SEC_TO_MILLISEC = 1000;
30constexpr int64_t MILLISEC_TO_MICROSEC = 1000;
31constexpr int32_t HOURS_WEST_GEOGRAPHICAL_LOWER_LIMIT = -12;
32constexpr int32_t HOURS_WEST_LOWER_LIMIT = -14;
33constexpr int32_t HOURS_WEST_UPPER_LIMIT = 12;
34constexpr int32_t TOTAL_SECONDS_OF_DAY = 24 * 60 * 60;
35constexpr int32_t TOTAL_SECONDS_OF_HOUR = 60 * 60;
36constexpr int32_t TOTAL_SECONDS_OF_MINUTE = 60;
37constexpr int32_t TOTAL_MINUTE_OF_HOUR = 60;
38constexpr int32_t TWENTY_FOUR_HOUR_BASE = 24;
39constexpr int32_t TWELVE_HOUR_BASE = 12;
40constexpr int32_t DAY_TIME_LOWER_LIMIT = 6;
41constexpr int32_t DAY_TIME_UPPER_LIMIT = 18;
42constexpr int32_t MAX_TIME_STR_LEN = 64;
43} // namespace
44
45int64_t GetMicroTickCount()
46{
47    struct timespec ts;
48    clock_gettime(CLOCK_MONOTONIC, &ts);
49    return (ts.tv_sec * SEC_TO_MICROSEC + ts.tv_nsec / MICROSEC_TO_NANOSEC);
50}
51
52int64_t GetSysTimestamp()
53{
54    struct timespec ts;
55    clock_gettime(CLOCK_MONOTONIC, &ts);
56    return ts.tv_sec * SEC_TO_NANOSEC + ts.tv_nsec;
57}
58
59int64_t GetCurrentTimestamp()
60{
61    struct timeval currentTime;
62    gettimeofday(&currentTime, nullptr);
63    return static_cast<int64_t>(currentTime.tv_sec) * SEC_TO_MILLISEC + currentTime.tv_usec / MILLISEC_TO_MICROSEC;
64}
65
66int64_t GetCurrentTimestampMicroSecond()
67{
68    struct timeval currentTime;
69    gettimeofday(&currentTime, nullptr);
70    return static_cast<int64_t>(currentTime.tv_sec) * SEC_TO_MILLISEC * MILLISEC_TO_MICROSEC + currentTime.tv_usec;
71}
72
73std::string ConvertTimestampToStr(int64_t timestamp)
74{
75    char timeStr[MAX_TIME_STR_LEN];
76    // timestamp is in millisecond unit, divide 1000 to second
77    auto t = static_cast<std::time_t>(timestamp / SEC_TO_MILLISEC);
78    auto local = std::localtime(&t);
79    if (!local) {
80        return "";
81    }
82    std::strftime(timeStr, MAX_TIME_STR_LEN, "%Y-%m-%d %H:%M:%S", local);
83    std::stringstream oss;
84    // milliseconds in timestr should be 3 characters length
85    oss << timeStr << "." << std::setw(3) << std::setfill('0') << (timestamp % SEC_TO_MILLISEC);
86    return oss.str();
87}
88
89TimeOfNow GetTimeOfNow(int32_t hoursWest)
90{
91    struct timeval currentTime;
92    struct timezone timeZone;
93    gettimeofday(&currentTime, &timeZone);
94
95    TimeOfNow timeOfNow(hoursWest);
96    int32_t minutesWest = timeZone.tz_minuteswest;
97    if (IsHoursWestValid(timeOfNow.hoursWest_)) {
98        minutesWest = Round(TOTAL_MINUTE_OF_HOUR * timeOfNow.hoursWest_);
99    } else {
100        // when [hoursWest] is invalid, set current time zone to [hoursWest].
101        // default value of hoursWest_ is INT_MAX
102        if (!NearEqual(timeOfNow.hoursWest_, INT_MAX)) {
103            LOGW("hoursWest [%{public}d] is invalid, use current time zone.", timeOfNow.hoursWest_);
104        }
105        timeOfNow.hoursWest_ = timeZone.tz_minuteswest / TOTAL_MINUTE_OF_HOUR;
106    }
107    int secondsOfToday = currentTime.tv_sec % TOTAL_SECONDS_OF_DAY - minutesWest * TOTAL_SECONDS_OF_MINUTE;
108    if (secondsOfToday < 0) {
109        secondsOfToday += TOTAL_SECONDS_OF_DAY;
110    }
111    timeOfNow.minute_ = (secondsOfToday / TOTAL_SECONDS_OF_MINUTE) % TOTAL_MINUTE_OF_HOUR +
112                        secondsOfToday % TOTAL_SECONDS_OF_MINUTE / TOTAL_SECONDS_OF_MINUTE;
113    timeOfNow.hour24_ =
114        (secondsOfToday / TOTAL_SECONDS_OF_HOUR) % TWENTY_FOUR_HOUR_BASE + timeOfNow.minute_ / TOTAL_MINUTE_OF_HOUR;
115    timeOfNow.hour12_ =
116        (timeOfNow.hour24_ < TWELVE_HOUR_BASE) ? timeOfNow.hour24_ : (timeOfNow.hour24_ - TWELVE_HOUR_BASE);
117    timeOfNow.second_ = secondsOfToday % TOTAL_SECONDS_OF_MINUTE;
118    timeOfNow.timeUsec_ = currentTime.tv_usec;
119    return timeOfNow;
120}
121
122bool IsHoursWestValid(int32_t& hoursWest)
123{
124    // valid hoursWest is within [-14, 12]
125    bool isValid = GreatOrEqual(hoursWest, HOURS_WEST_LOWER_LIMIT) && LessOrEqual(hoursWest, HOURS_WEST_UPPER_LIMIT);
126    if (!isValid) {
127        return false;
128    }
129    // Theoretically, the time zone range should be [-12, +12], but some countries and regions that cross the
130    // International Date Line use -13(UTC+13) and -14(UTC+14) to keep the whole country or region at the same date.
131    bool isSpecialTimeZone = LessNotEqual(hoursWest, HOURS_WEST_GEOGRAPHICAL_LOWER_LIMIT);
132    if (isSpecialTimeZone) {
133        hoursWest += TWENTY_FOUR_HOUR_BASE;
134    }
135    return true;
136}
137
138bool IsDayTime(const TimeOfNow& timeOfNow)
139{
140    return GreatOrEqual(timeOfNow.hour24_, DAY_TIME_LOWER_LIMIT) &&
141           LessNotEqual(timeOfNow.hour24_, DAY_TIME_UPPER_LIMIT);
142}
143
144TimeOfZone GetTimeOfZone(int32_t hoursWest)
145{
146    struct timeval currentTime;
147    struct timezone timeZone;
148    gettimeofday(&currentTime, &timeZone);
149
150    TimeOfZone timeOfZone(hoursWest);
151    int32_t minutesWest = timeZone.tz_minuteswest;
152    if (HoursWestIsValid(timeOfZone.hoursWest_)) {
153        minutesWest = Round(TOTAL_MINUTE_OF_HOUR * timeOfZone.hoursWest_);
154    } else {
155        // when [hoursWest] is invalid, set current time zone to [hoursWest].
156        // default value of hoursWest_ is DEFAULT_HOURS_WEST
157        if (!NearEqual(timeOfZone.hoursWest_, DEFAULT_HOURS_WEST)) {
158            LOGW("hoursWest [%{public}d] is invalid, use current time zone.", timeOfZone.hoursWest_);
159        }
160        timeOfZone.hoursWest_ = minutesWest / TOTAL_MINUTE_OF_HOUR;
161    }
162    int secondsOfToday = currentTime.tv_sec % TOTAL_SECONDS_OF_DAY - minutesWest * TOTAL_SECONDS_OF_MINUTE;
163    if (secondsOfToday < 0) {
164        secondsOfToday += TOTAL_SECONDS_OF_DAY;
165    }
166    timeOfZone.minute_ = (secondsOfToday / TOTAL_SECONDS_OF_MINUTE) % TOTAL_MINUTE_OF_HOUR +
167                        secondsOfToday % TOTAL_SECONDS_OF_MINUTE / TOTAL_SECONDS_OF_MINUTE;
168    timeOfZone.hour24_ =
169        (secondsOfToday / TOTAL_SECONDS_OF_HOUR) % TWENTY_FOUR_HOUR_BASE + timeOfZone.minute_ / TOTAL_MINUTE_OF_HOUR;
170    timeOfZone.hour12_ =
171        (timeOfZone.hour24_ < TWELVE_HOUR_BASE) ? timeOfZone.hour24_ : (timeOfZone.hour24_ - TWELVE_HOUR_BASE);
172    timeOfZone.second_ = secondsOfToday % TOTAL_SECONDS_OF_MINUTE;
173    timeOfZone.timeUsec_ = currentTime.tv_usec;
174    return timeOfZone;
175}
176
177bool HoursWestIsValid(int32_t& hoursWest)
178{
179    // valid hoursWest is within [-14, 12]
180    bool isValid = GreatOrEqual(hoursWest, HOURS_WEST_LOWER_LIMIT) && LessOrEqual(hoursWest, HOURS_WEST_UPPER_LIMIT);
181    if (!isValid) {
182        return false;
183    }
184    // Theoretically, the time zone range should be [-12, +12], but some countries and regions that cross the
185    // International Date Line use -13(UTC+13) and -14(UTC+14) to keep the whole country or region at the same date.
186    bool isSpecialTimeZone = LessNotEqual(hoursWest, HOURS_WEST_GEOGRAPHICAL_LOWER_LIMIT);
187    if (isSpecialTimeZone) {
188        hoursWest += TWENTY_FOUR_HOUR_BASE;
189    }
190    return true;
191}
192
193bool IsDayTime(const TimeOfZone& timeOfZone)
194{
195    return GreatOrEqual(timeOfZone.hour24_, DAY_TIME_LOWER_LIMIT) &&
196           LessNotEqual(timeOfZone.hour24_, DAY_TIME_UPPER_LIMIT);
197}
198
199} // namespace OHOS::Ace
200