/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* 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 protocol PBlob;
include protocol PBluetoothRequest;
include protocol PContent;

include BluetoothTypes;

include "mozilla/dom/bluetooth/ipc/BluetoothMessageUtils.h";

using mozilla::dom::bluetooth::BluetoothObjectType;

namespace mozilla {
namespace dom {
namespace bluetooth {

/**
 * Bluetooth request types.
 */

struct DefaultAdapterPathRequest
{ };

struct SetPropertyRequest
{
  BluetoothObjectType type;
  nsString path;
  BluetoothNamedValue value;
};

struct GetPropertyRequest
{
  BluetoothObjectType type;
  nsString path;
};

struct StartDiscoveryRequest
{
  nsString path;
};

struct StopDiscoveryRequest
{
  nsString path;
};

struct PairRequest
{
  nsString path;
  nsString address;
  uint32_t timeoutMS;
};

struct UnpairRequest
{
  nsString path;
  nsString address;
};

struct SetPinCodeRequest
{
  nsString path;
  nsString pincode;
};

struct SetPasskeyRequest
{
  nsString path;
  uint32_t passkey;
};

struct ConfirmPairingConfirmationRequest
{
  nsString path;
};

struct DenyPairingConfirmationRequest
{
  nsString path;
};

struct ConfirmAuthorizationRequest
{
  nsString path;
};

struct DenyAuthorizationRequest
{
  nsString path;
};

struct DevicePropertiesRequest
{
  nsString[] addresses;
};

struct ConnectRequest
{
  nsString address;
  nsString adapterPath;
  uint16_t profileId;
};

struct DisconnectRequest
{
  uint16_t profileId;
};

struct SendFileRequest
{
  nsString devicePath;
  PBlob blob;
};

struct StopSendingFileRequest
{
  nsString devicePath;
};

struct ConfirmReceivingFileRequest
{
  nsString devicePath;
};

struct DenyReceivingFileRequest
{
  nsString devicePath;
};

union Request
{
  DefaultAdapterPathRequest;
  SetPropertyRequest;
  GetPropertyRequest;
  StartDiscoveryRequest;
  StopDiscoveryRequest;
  PairRequest;
  UnpairRequest;
  SetPinCodeRequest;
  SetPasskeyRequest;
  ConfirmPairingConfirmationRequest;
  DenyPairingConfirmationRequest;
  ConfirmAuthorizationRequest;
  DenyAuthorizationRequest;
  DevicePropertiesRequest;
  ConnectRequest;
  DisconnectRequest;
  SendFileRequest;
  StopSendingFileRequest;
  ConfirmReceivingFileRequest;
  DenyReceivingFileRequest;
};

protocol PBluetooth
{
  manager PContent;
  manages PBluetoothRequest;

  /**
   * The potential exists for a racy shutdown so the following sequence of
   * messages is used to shutdown safely:
   *
   *   1. [BeginShutdown]       (Parent -> Child [Optional])
   *   2. StopNotifying         (Child  -> Parent)
   *   3. NotificationsStopped  (Parent -> Child)
   *   4. __delete__()          (Child  -> Parent)
   */

child:
  /**
   * Sent when a settings change has enabled or disabled the bluetooth firmware.
   */
  Enabled(bool enabled);

  /**
   * Sent when a bluetooth signal is broadcasted to child processes.
   */
  Notify(BluetoothSignal signal);

  /**
   * Sent when the parent process is about to be shut down. See shutdown note
   * above.
   */
  BeginShutdown();

  /**
   * Sent to inform the child process that it will no longer receive any
   * messages from the parent. See shutdown note above.
   */
  NotificationsStopped();

parent:
  /**
   * Sent when the child no longer needs to use bluetooth. See shutdown note
   * above.
   */
  __delete__();

  /**
   * Sent when the child needs to receive signals related to the given node.
   */
  RegisterSignalHandler(nsString node);

  /**
   * Sent when the child no longer needs to receive signals related to the given
   * node.
   */
  UnregisterSignalHandler(nsString node);

  /**
   * Sent when the child no longer needs to receive any messages from the
   * parent. See shutdown note above.
   */
  StopNotifying();

  /**
   * Sent when the child makes an asynchronous request to the parent.
   */
  PBluetoothRequest(Request request);

  /**
   * FIXME: Bug 547703.
   *
   * This is the state machine we want:
   *
   * start state NOTIFYING:
   *   send Enabled goto NOTIFYING;
   *   send Notify goto NOTIFYING;
   *   recv RegisterSignalHandler goto NOTIFYING;
   *   recv UnregisterSignalHandler goto NOTIFYING;
   *   send BeginShutdown goto PARENT_DONE;
   *   recv StopNotifying goto CHILD_DONE;
   *
   * state PARENT_DONE:
   *   recv RegisterSignalHandler goto PARENT_DONE;
   *   recv UnregisterSignalHandler goto PARENT_DONE;
   *   recv StopNotifying goto CHILD_DONE;
   *
   * state CHILD_DONE:
   *   send Enabled goto CHILD_DONE;
   *   send Notify goto CHILD_DONE;
   *   send BeginShutdown goto CHILD_DONE;
   *   send NotificationsStopped goto DONE;
   *
   * state DONE:
   *   recv __delete__;
   */
};

} // namespace bluetooth
} // namespace dom
} // namespace mozilla