/*
 * Copyright 2018 The Android Open Source Project
 *
 * 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.
 */

#pragma once

#include <map>
#include <memory>
#include <mutex>

#include "hardware/avrcp/avrcp.h"
#include "osi/include/properties.h"
#include "profile/avrcp/avrcp_sdp_service.h"
#include "profile/avrcp/connection_handler.h"
#include "types/raw_address.h"

namespace bluetooth {
namespace avrcp {

/**
 * AvrcpService is the management interface for AVRCP Target. It handles any
 * required thread switching, interface registration, and provides an API
 * for connecting and disconnecting devices.
 * TODO (apanicke): Instead of providing a service interface implementation,
 * have the AvrcpService itself be its interface so we don't have to access
 * it indirectly.
 */
class AvrcpService : public MediaCallbacks {
public:
  /**
   * Gets a handle to the AvrcpService
   *
   * Currently used by A2DP to tell AVRCP to initiate a connection to the
   * remote device.
   */
  static AvrcpService* Get();

  /**
   * Returns an interface to control this service. The Avrcp::ServiceInterface
   * handles all thread switching between the caller thread and the thread the
   * service runs on, that way whoever uses the interface doesn't need to be
   * aware which thread the service runs on.
   */
  static ServiceInterface* GetServiceInterface();

  void Init(MediaInterface* media_interface, VolumeInterface* volume_interface,
            PlayerSettingsInterface* player_settings_interface);
  void Cleanup();

  void RegisterBipServer(int psm);
  void UnregisterBipServer();

  void ConnectDevice(const RawAddress& bdaddr);
  void DisconnectDevice(const RawAddress& bdaddr);

  void SetBipClientStatus(const RawAddress& bdaddr, bool connected);

  // Functions inherited from MediaCallbacks in order to receive updates
  void SendMediaUpdate(bool track_changed, bool play_state, bool queue) override;
  void SendFolderUpdate(bool available_players, bool addressed_player, bool queue) override;

  void SendPlayerSettingsChanged(std::vector<PlayerAttribute> attributes,
                                 std::vector<uint8_t> values) override;

  bool IsDeviceConnected(const RawAddress& bdaddr);

  /** when a2dp connected, btif will start register vol changed, so we need a
   * interface for it. */
  void RegisterVolChanged(const RawAddress& bdaddr);

  class ServiceInterfaceImpl : public ServiceInterface {
  public:
    void Init(MediaInterface* media_interface, VolumeInterface* volume_interface,
              PlayerSettingsInterface* player_settings_interface) override;
    void RegisterBipServer(int psm) override;
    void UnregisterBipServer() override;
    bool ConnectDevice(const RawAddress& bdaddr) override;
    bool DisconnectDevice(const RawAddress& bdaddr) override;
    void SetBipClientStatus(const RawAddress& bdaddr, bool connected) override;
    bool Cleanup() override;

  private:
    std::mutex service_interface_lock_;
  };

  static void DebugDump(int fd);

protected:
  void DeviceCallback(std::shared_ptr<Device> device);
  uint16_t GetSupportedFeatures(uint16_t profile_version);

private:
  static AvrcpService* instance_;
  static ServiceInterfaceImpl* service_interface_;

  uint16_t target_sdp_request_id_ = UNASSIGNED_REQUEST_ID;
  uint16_t control_sdp_request_id_ = UNASSIGNED_REQUEST_ID;
  uint32_t sdp_record_handle = -1;
  uint32_t ct_sdp_record_handle = -1;
  uint16_t profile_version = -1;

  MediaInterface* media_interface_ = nullptr;
  VolumeInterface* volume_interface_ = nullptr;
  PlayerSettingsInterface* player_settings_interface_ = nullptr;

  ConnectionHandler* connection_handler_;
};

}  // namespace avrcp
}  // namespace bluetooth

inline bool is_new_avrcp_enabled() {
  return osi_property_get_bool("bluetooth.profile.avrcp.target.enabled", false);
}