// Copyright 2021 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef COBALT_DOM_PERFORMANCE_LIFECYCLE_TIMING_H_
#define COBALT_DOM_PERFORMANCE_LIFECYCLE_TIMING_H_

#include <string>

#include "base/time/time.h"
#include "cobalt/base/application_state.h"
#include "cobalt/dom/performance_entry.h"
#include "cobalt/dom/performance_high_resolution_time.h"
#include "cobalt/script/wrappable.h"

namespace cobalt {
namespace dom {

class Performance;

class PerformanceLifecycleTiming : public PerformanceEntry {
 public:
  PerformanceLifecycleTiming(const std::string& name,
                             const DOMHighResTimeStamp time_origin);

  // Web API.
  DOMHighResTimeStamp app_preload() const;
  DOMHighResTimeStamp app_start() const;
  DOMHighResTimeStamp app_blur() const;
  DOMHighResTimeStamp app_focus() const;
  DOMHighResTimeStamp app_conceal() const;
  DOMHighResTimeStamp app_reveal() const;
  DOMHighResTimeStamp app_freeze() const;
  DOMHighResTimeStamp app_unfreeze() const;
  DOMHighResTimeStamp app_deeplink() const;
  std::string current_state() const;
  std::string last_state() const;

  std::string entry_type() const override { return "lifecycle"; }
  PerformanceEntryType EntryTypeEnum() const override {
    return PerformanceEntry::kLifecycle;
  }

  void SetApplicationState(base::ApplicationState state, int64_t timestamp);
  void SetApplicationStartOrPreloadTimestamp(bool is_preload,
                                             int64_t timestamp);
  void SetDeepLinkTimestamp(int64_t timestamp);

  DEFINE_WRAPPABLE_TYPE(PerformanceLifecycleTiming);

 private:
  void SetLifecycleTimingInfoState(base::ApplicationState state);
  DOMHighResTimeStamp ReportDOMHighResTimeStamp(int64_t timestamp) const;
  base::ApplicationState GetCurrentState() const;
  struct LifecycleTimingInfo {
    int64_t app_preload = 0;
    int64_t app_start = 0;
    int64_t app_blur = 0;
    int64_t app_conceal = 0;
    int64_t app_focus = 0;
    int64_t app_reveal = 0;
    int64_t app_freeze = 0;
    int64_t app_unfreeze = 0;
    int64_t app_deeplink = 0;

    base::ApplicationState current_state = base::kApplicationStateStopped;
    base::ApplicationState last_state = base::kApplicationStateStopped;
  };

  LifecycleTimingInfo lifecycle_timing_info_;

  DOMHighResTimeStamp time_origin_;

  DISALLOW_COPY_AND_ASSIGN(PerformanceLifecycleTiming);
};
}  // namespace dom
}  // namespace cobalt

#endif  // COBALT_DOM_PERFORMANCE_LIFECYCLE_TIMING_H_