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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "StartupTimeline.h"
#include "mozilla/Telemetry.h"
#include "mozilla/TimeStamp.h"
#include "nsXULAppAPI.h"

namespace mozilla {

TimeStamp StartupTimeline::sStartupTimeline[StartupTimeline::MAX_EVENT_ID];
const char*
    StartupTimeline::sStartupTimelineDesc[StartupTimeline::MAX_EVENT_ID] = {
#define mozilla_StartupTimeline_Event(ev, desc) desc,
#include "StartupTimeline.h"
#undef mozilla_StartupTimeline_Event
};

} /* namespace mozilla */

using mozilla::StartupTimeline;
using mozilla::TimeStamp;

/**
 * The XRE_StartupTimeline_Record function is to be used by embedding
 * applications that can't use mozilla::StartupTimeline::Record() directly.
 *
 * @param aEvent The event to be recorded, must correspond to an element of the
 *               mozilla::StartupTimeline::Event enumartion
 * @param aWhen  The time at which the event happened
 */
void XRE_StartupTimelineRecord(int aEvent, TimeStamp aWhen) {
  StartupTimeline::Record((StartupTimeline::Event)aEvent, aWhen);
}

void StartupTimeline::RecordOnce(Event ev) {
  if (HasRecord(ev)) {
    return;
  }

  Record(ev);

  // Record first paint timestamp as a scalar.
  if (ev == FIRST_PAINT) {
    bool error = false;
    uint32_t firstPaintTime =
        (uint32_t)(Get(ev) - TimeStamp::ProcessCreation(&error))
            .ToMilliseconds();
    if (!error) {
      Telemetry::ScalarSet(Telemetry::ScalarID::TIMESTAMPS_FIRST_PAINT,
                           firstPaintTime);
    }
  }
}