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// Copyright 2024 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/checked_util.h"
#include <algorithm>
#include <optional>
#include <vector>
#include "base/logging.h"
#include "base/time/time.h"
#include "base/values.h"
#include "chromeos/ash/components/policy/weekly_time/weekly_time_interval_checked.h"
namespace policy::weekly_time {
namespace {
std::optional<base::Time> UTCToLocal(base::Time utc) {
base::Time::Exploded utc_exploded_local;
utc.LocalExplode(&utc_exploded_local);
if (!utc_exploded_local.HasValidValues()) {
return std::nullopt;
}
base::Time utc_exploded_local_unexploded_utc;
if (!base::Time::FromUTCExploded(utc_exploded_local,
&utc_exploded_local_unexploded_utc)) {
return std::nullopt;
}
return utc_exploded_local_unexploded_utc;
}
std::optional<base::Time> LocalToUTC(base::Time local) {
base::Time::Exploded local_exploded_utc;
local.UTCExplode(&local_exploded_utc);
if (!local_exploded_utc.HasValidValues()) {
return std::nullopt;
}
base::Time local_exploded_utc_unexploded_local;
if (!base::Time::FromLocalExploded(local_exploded_utc,
&local_exploded_utc_unexploded_local)) {
return std::nullopt;
}
return local_exploded_utc_unexploded_local;
}
} // namespace
std::optional<std::vector<WeeklyTimeIntervalChecked>> ExtractIntervalsFromList(
const base::Value::List& list) {
std::vector<WeeklyTimeIntervalChecked> intervals;
for (const auto& interval_value : list) {
if (!interval_value.is_dict()) {
LOG(ERROR) << "Interval not a dict: " << interval_value.DebugString();
return std::nullopt;
}
const auto& interval_dict = interval_value.GetDict();
auto interval = WeeklyTimeIntervalChecked::FromDict(interval_dict);
if (!interval.has_value()) {
LOG(ERROR) << "Couldn't parse interval: " << interval_dict.DebugString();
return std::nullopt;
}
intervals.push_back(interval.value());
}
return intervals;
}
bool IntervalsContainTime(
const std::vector<WeeklyTimeIntervalChecked>& intervals,
const WeeklyTimeChecked& time) {
for (const auto& interval : intervals) {
if (interval.Contains(time)) {
return true;
}
}
return false;
}
std::optional<WeeklyTimeChecked> GetNextEvent(
const std::vector<WeeklyTimeIntervalChecked>& intervals,
const WeeklyTimeChecked& time) {
std::optional<WeeklyTimeChecked> next_event = std::nullopt;
// Sentinel value set to max which is 1 week.
base::TimeDelta min_duration = base::Days(7);
for (const auto& interval : intervals) {
for (const WeeklyTimeChecked& event : {interval.start(), interval.end()}) {
const base::TimeDelta duration =
WeeklyTimeIntervalChecked(time, event).Duration();
if (duration < min_duration) {
min_duration = duration;
next_event = event;
}
}
}
return next_event;
}
std::optional<base::TimeDelta> GetDurationToNextEvent(
const std::vector<WeeklyTimeIntervalChecked>& intervals,
const WeeklyTimeChecked& time) {
std::optional<WeeklyTimeChecked> next_event = GetNextEvent(intervals, time);
if (!next_event.has_value()) {
return std::nullopt;
}
return WeeklyTimeIntervalChecked(time, next_event.value()).Duration();
}
base::Time AddOffsetInLocalTime(base::Time utc, base::TimeDelta offset) {
std::optional<base::Time> local = UTCToLocal(utc);
if (!local.has_value()) {
return utc + offset;
}
base::Time local_with_offset = local.value() + offset;
std::optional<base::Time> utc_with_offset = LocalToUTC(local_with_offset);
if (!utc_with_offset.has_value()) {
return utc + offset;
}
return utc_with_offset.value();
}
} // namespace policy::weekly_time
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