/*
 *  Copyright 2011 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#ifndef PC_PEER_CONNECTION_FACTORY_H_
#define PC_PEER_CONNECTION_FACTORY_H_

#include <memory>
#include <string>

#include "api/media_stream_interface.h"
#include "api/peer_connection_interface.h"
#include "api/scoped_refptr.h"
#include "media/sctp/sctp_transport_internal.h"
#include "pc/channel_manager.h"
#include "rtc_base/rtc_certificate_generator.h"
#include "rtc_base/thread.h"

namespace rtc {
class BasicNetworkManager;
class BasicPacketSocketFactory;
}  // namespace rtc

namespace webrtc {

class RtcEventLog;

class PeerConnectionFactory : public PeerConnectionFactoryInterface {
 public:
  void SetOptions(const Options& options) override;

  rtc::scoped_refptr<PeerConnectionInterface> CreatePeerConnection(
      const PeerConnectionInterface::RTCConfiguration& configuration,
      std::unique_ptr<cricket::PortAllocator> allocator,
      std::unique_ptr<rtc::RTCCertificateGeneratorInterface> cert_generator,
      PeerConnectionObserver* observer) override;

  rtc::scoped_refptr<PeerConnectionInterface> CreatePeerConnection(
      const PeerConnectionInterface::RTCConfiguration& configuration,
      PeerConnectionDependencies dependencies) override;

  bool Initialize();

  RtpCapabilities GetRtpSenderCapabilities(
      cricket::MediaType kind) const override;

  RtpCapabilities GetRtpReceiverCapabilities(
      cricket::MediaType kind) const override;

  rtc::scoped_refptr<MediaStreamInterface> CreateLocalMediaStream(
      const std::string& stream_id) override;

  rtc::scoped_refptr<AudioSourceInterface> CreateAudioSource(
      const cricket::AudioOptions& options) override;

  rtc::scoped_refptr<VideoTrackInterface> CreateVideoTrack(
      const std::string& id,
      VideoTrackSourceInterface* video_source) override;

  rtc::scoped_refptr<AudioTrackInterface> CreateAudioTrack(
      const std::string& id,
      AudioSourceInterface* audio_source) override;

  bool StartAecDump(FILE* file, int64_t max_size_bytes) override;
  void StopAecDump() override;

  SctpTransportFactoryInterface* sctp_transport_factory() {
    return sctp_factory_.get();
  }

  virtual cricket::ChannelManager* channel_manager();

  rtc::Thread* signaling_thread() {
    // This method can be called on a different thread when the factory is
    // created in CreatePeerConnectionFactory().
    return signaling_thread_;
  }
  rtc::Thread* worker_thread() { return worker_thread_; }
  rtc::Thread* network_thread() { return network_thread_; }

  const Options& options() const { return options_; }

  const WebRtcKeyValueConfig& trials() const { return *trials_.get(); }

 protected:
  // This structure allows simple management of all new dependencies being added
  // to the PeerConnectionFactory.
  explicit PeerConnectionFactory(
      PeerConnectionFactoryDependencies dependencies);

  // Hook to let testing framework insert actions between
  // "new RTCPeerConnection" and "pc.Initialize"
  virtual void ActionsBeforeInitializeForTesting(PeerConnectionInterface*) {}

  virtual ~PeerConnectionFactory();

 private:
  bool IsTrialEnabled(absl::string_view key) const;

  std::unique_ptr<RtcEventLog> CreateRtcEventLog_w();
  std::unique_ptr<Call> CreateCall_w(RtcEventLog* event_log);

  bool wraps_current_thread_;
  rtc::Thread* network_thread_;
  rtc::Thread* worker_thread_;
  rtc::Thread* signaling_thread_;
  std::unique_ptr<rtc::Thread> owned_network_thread_;
  std::unique_ptr<rtc::Thread> owned_worker_thread_;
  const std::unique_ptr<TaskQueueFactory> task_queue_factory_;
  Options options_;
  std::unique_ptr<cricket::ChannelManager> channel_manager_;
  const std::unique_ptr<rtc::NetworkMonitorFactory> network_monitor_factory_;
  std::unique_ptr<rtc::BasicNetworkManager> default_network_manager_;
  std::unique_ptr<rtc::BasicPacketSocketFactory> default_socket_factory_;
  std::unique_ptr<cricket::MediaEngineInterface> media_engine_;
  std::unique_ptr<webrtc::CallFactoryInterface> call_factory_;
  std::unique_ptr<RtcEventLogFactoryInterface> event_log_factory_;
  std::unique_ptr<FecControllerFactoryInterface> fec_controller_factory_;
  std::unique_ptr<NetworkStatePredictorFactoryInterface>
      network_state_predictor_factory_;
  std::unique_ptr<NetworkControllerFactoryInterface>
      injected_network_controller_factory_;
  std::unique_ptr<NetEqFactory> neteq_factory_;
  std::unique_ptr<SctpTransportFactoryInterface> sctp_factory_;
  const std::unique_ptr<WebRtcKeyValueConfig> trials_;
};

}  // namespace webrtc

#endif  // PC_PEER_CONNECTION_FACTORY_H_