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#include "base/clock_mock.h"

#include <cstdint>
#include <ctime>

namespace mozc {

ClockMock::ClockMock(uint64_t sec, uint32_t usec)
    : seconds_(sec),
      micro_seconds_(usec),
      frequency_(1000000000),
      ticks_(0),
      timezone_(absl::UTCTimeZone()),
      timezone_offset_sec_(0),
      delta_seconds_(0),
      delta_micro_seconds_(0) {}

ClockMock::~ClockMock() {}

void ClockMock::GetTimeOfDay(uint64_t *sec, uint32_t *usec) {
  *sec = seconds_;
  *usec = micro_seconds_;
  PutClockForward(delta_seconds_, delta_micro_seconds_);
}

uint64_t ClockMock::GetTime() {
  const uint64_t ret_sec = seconds_;
  PutClockForward(delta_seconds_, delta_micro_seconds_);
  return ret_sec;
}

absl::Time ClockMock::GetAbslTime() {
  absl::Time at = absl::FromUnixSeconds(seconds_);
  PutClockForward(delta_seconds_, delta_micro_seconds_);
  return at;
}

uint64_t ClockMock::GetFrequency() { return frequency_; }

uint64_t ClockMock::GetTicks() { return ticks_; }

const absl::TimeZone& ClockMock::GetTimeZone() {
  return timezone_;
}

void ClockMock::SetTimeZoneOffset(int32_t timezone_offset_sec) {
  timezone_offset_sec_ = timezone_offset_sec;
  timezone_ = absl::FixedTimeZone(timezone_offset_sec);
}

void ClockMock::PutClockForward(uint64_t delta_sec, uint32_t delta_usec) {
  const uint32_t one_second = 1000000u;

  if (micro_seconds_ + delta_usec < one_second) {
    seconds_ += delta_sec;
    micro_seconds_ += delta_usec;
  } else {
    seconds_ += delta_sec + 1uLL;
    micro_seconds_ += delta_usec - one_second;
  }
}

void ClockMock::PutClockForwardByTicks(uint64_t ticks) { ticks_ += ticks; }

void ClockMock::SetAutoPutClockForward(uint64_t delta_sec,
                                       uint32_t delta_usec) {
  delta_seconds_ = delta_sec;
  delta_micro_seconds_ = delta_usec;
}

void ClockMock::SetTime(uint64_t sec, uint32_t usec) {
  seconds_ = sec;
  micro_seconds_ = usec;
}

void ClockMock::SetFrequency(uint64_t frequency) { frequency_ = frequency; }

void ClockMock::SetTicks(uint64_t ticks) { ticks_ = ticks; }

}  // namespace mozc
