// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef FLUTTER_SHELL_PLATFORM_EMBEDDER_EMBEDDER_THREAD_HOST_H_
#define FLUTTER_SHELL_PLATFORM_EMBEDDER_EMBEDDER_THREAD_HOST_H_

#include <map>
#include <memory>
#include <set>

#include "flutter/common/task_runners.h"
#include "flutter/fml/macros.h"
#include "flutter/shell/common/thread_host.h"
#include "flutter/shell/platform/embedder/embedder.h"
#include "flutter/shell/platform/embedder/embedder_task_runner.h"

namespace flutter {

class EmbedderThreadHost {
 public:
  static std::unique_ptr<EmbedderThreadHost>
  CreateEmbedderOrEngineManagedThreadHost(
      const FlutterCustomTaskRunners* custom_task_runners);

  EmbedderThreadHost(
      ThreadHost host,
      flutter::TaskRunners runners,
      std::set<fml::RefPtr<EmbedderTaskRunner>> embedder_task_runners);

  ~EmbedderThreadHost();

  bool IsValid() const;

  const flutter::TaskRunners& GetTaskRunners() const;

  bool PostTask(int64_t runner, uint64_t task) const;

 private:
  ThreadHost host_;
  flutter::TaskRunners runners_;
  std::map<int64_t, fml::RefPtr<EmbedderTaskRunner>> runners_map_;

  static std::unique_ptr<EmbedderThreadHost> CreateEmbedderManagedThreadHost(
      const FlutterCustomTaskRunners* custom_task_runners);

  static std::unique_ptr<EmbedderThreadHost> CreateEngineManagedThreadHost();

  FML_DISALLOW_COPY_AND_ASSIGN(EmbedderThreadHost);
};

}  // namespace flutter

#endif  // FLUTTER_SHELL_PLATFORM_EMBEDDER_EMBEDDER_THREAD_HOST_H_