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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromeos/ash/components/policy/weekly_time/weekly_time.h"
#include <algorithm>
#include "base/logging.h"
#include "base/time/time.h"
namespace em = enterprise_management;
namespace policy {
namespace {
constexpr int64_t kMillisecondsPerWeek = base::Days(7).InMilliseconds();
} // namespace
// static
const char WeeklyTime::kDayOfWeek[] = "day_of_week";
const char WeeklyTime::kTime[] = "time";
const char WeeklyTime::kTimezoneOffset[] = "timezone_offset";
const std::vector<std::string> WeeklyTime::kWeekDays = {
"UNSPECIFIED", "MONDAY", "TUESDAY", "WEDNESDAY",
"THURSDAY", "FRIDAY", "SATURDAY", "SUNDAY"};
WeeklyTime::WeeklyTime(int day_of_week,
int milliseconds,
std::optional<int> timezone_offset)
: day_of_week_(day_of_week),
milliseconds_(milliseconds),
timezone_offset_(timezone_offset) {
DCHECK_GT(day_of_week, 0);
DCHECK_LE(day_of_week, 7);
DCHECK_GE(milliseconds, 0);
DCHECK_LT(milliseconds, base::Time::kMillisecondsPerDay);
}
WeeklyTime::WeeklyTime(const WeeklyTime& rhs) = default;
WeeklyTime& WeeklyTime::operator=(const WeeklyTime& rhs) = default;
base::Value WeeklyTime::ToValue() const {
base::Value weekly_time(base::Value::Type::DICT);
weekly_time.GetDict().Set(kDayOfWeek, day_of_week_);
weekly_time.GetDict().Set(kTime, milliseconds_);
if (timezone_offset_)
weekly_time.GetDict().Set(kTimezoneOffset, timezone_offset_.value());
return weekly_time;
}
base::TimeDelta WeeklyTime::GetDurationTo(const WeeklyTime& other) const {
// Can't compare timezone agnostic intervals and non-timezone agnostic
// intervals.
DCHECK_EQ(timezone_offset_.has_value(), other.timezone_offset().has_value());
WeeklyTime other_converted =
timezone_offset_ ? other.ConvertToTimezone(timezone_offset_.value())
: other;
int duration = base::Days(other_converted.day_of_week() - day_of_week_)
.InMilliseconds() +
other_converted.milliseconds() - milliseconds_;
if (duration < 0) {
duration += kMillisecondsPerWeek;
}
return base::Milliseconds(duration);
}
WeeklyTime WeeklyTime::AddMilliseconds(int milliseconds) const {
milliseconds %= kMillisecondsPerWeek;
// Make |milliseconds| positive number (add number of milliseconds per week)
// for easier evaluation.
milliseconds += kMillisecondsPerWeek;
int shifted_milliseconds = milliseconds_ + milliseconds;
// Get milliseconds from the start of the day.
int result_milliseconds =
shifted_milliseconds % base::Time::kMillisecondsPerDay;
int day_offset = shifted_milliseconds / base::Time::kMillisecondsPerDay;
// Convert day of week considering week is cyclic. +/- 1 is
// because day of week is from 1 to 7.
int result_day_of_week = (day_of_week_ + day_offset - 1) % 7 + 1;
// AddMilliseconds should preserve the timezone.
return WeeklyTime(result_day_of_week, result_milliseconds, timezone_offset_);
}
WeeklyTime WeeklyTime::ConvertToTimezone(int timezone_offset) const {
DCHECK(timezone_offset_);
return WeeklyTime(day_of_week_, milliseconds_, timezone_offset)
.AddMilliseconds(timezone_offset - timezone_offset_.value());
}
// static
WeeklyTime WeeklyTime::GetGmtWeeklyTime(base::Time time) {
base::Time::Exploded exploded;
time.UTCExplode(&exploded);
return GetWeeklyTimeFromExploded(exploded, 0);
}
// static
WeeklyTime WeeklyTime::GetLocalWeeklyTime(base::Time time) {
base::Time::Exploded exploded;
time.LocalExplode(&exploded);
WeeklyTime result = GetWeeklyTimeFromExploded(exploded, std::nullopt);
return result;
}
// static
std::unique_ptr<WeeklyTime> WeeklyTime::ExtractFromProto(
const em::WeeklyTimeProto& container,
std::optional<int> timezone_offset) {
if (!container.has_day_of_week() ||
container.day_of_week() == em::WeeklyTimeProto::DAY_OF_WEEK_UNSPECIFIED) {
LOG(ERROR) << "Day of week is absent or unspecified.";
return nullptr;
}
if (!container.has_time()) {
LOG(ERROR) << "Time is absent.";
return nullptr;
}
int time_of_day = container.time();
if (!(time_of_day >= 0 && time_of_day < base::Time::kMillisecondsPerDay)) {
LOG(ERROR) << "Invalid time value: " << time_of_day
<< ", the value should be in [0; "
<< base::Time::kMillisecondsPerDay << ").";
return nullptr;
}
return std::make_unique<WeeklyTime>(container.day_of_week(), time_of_day,
timezone_offset);
}
// static
std::unique_ptr<WeeklyTime> WeeklyTime::ExtractFromDict(
const base::Value::Dict& dict,
std::optional<int> timezone_offset) {
auto* day_of_week = dict.FindString(kDayOfWeek);
if (!day_of_week) {
LOG(ERROR) << "day_of_week is absent.";
return nullptr;
}
int day_of_week_value =
std::ranges::find(kWeekDays, *day_of_week) - kWeekDays.begin();
if (day_of_week_value <= 0 || day_of_week_value > 7) {
LOG(ERROR) << "Invalid day_of_week: " << day_of_week;
return nullptr;
}
auto time_of_day = dict.FindInt(kTime);
if (!time_of_day.has_value()) {
LOG(ERROR) << "Time is absent";
return nullptr;
}
if (!(time_of_day.value() >= 0 &&
time_of_day.value() < base::Time::kMillisecondsPerDay)) {
LOG(ERROR) << "Invalid time value: " << time_of_day.value()
<< ", the value should be in [0; "
<< base::Time::kMillisecondsPerDay << ").";
return nullptr;
}
return std::make_unique<WeeklyTime>(day_of_week_value, time_of_day.value(),
timezone_offset);
}
WeeklyTime GetWeeklyTimeFromExploded(const base::Time::Exploded& exploded,
const std::optional<int> timezone_offset) {
int day_of_week = exploded.day_of_week == 0 ? 7 : exploded.day_of_week;
int milliseconds = static_cast<int>(
base::Hours(exploded.hour).InMilliseconds() +
base::Minutes(exploded.minute).InMilliseconds() +
base::Seconds(exploded.second).InMilliseconds() + exploded.millisecond);
return WeeklyTime(day_of_week, milliseconds, timezone_offset);
}
} // namespace policy
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