//
// Copyright 2017 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 "os/log.h"

#include <android/hardware/bluetooth/1.1/IBluetoothHci.h>

#include <hidl/MQDescriptor.h>

#include "hci_packetizer.h"

#include "model/controller/dual_mode_controller.h"
#include "model/setup/async_manager.h"
#include "model/setup/test_channel_transport.h"
#include "model/setup/test_command_handler.h"
#include "model/setup/test_model.h"

namespace android {
namespace hardware {
namespace bluetooth {
namespace V1_1 {
namespace sim {

class BluetoothDeathRecipient;

class BluetoothHci : public IBluetoothHci {
 public:
  BluetoothHci();

  ::android::hardware::Return<void> initialize(
      const sp<V1_0::IBluetoothHciCallbacks>& cb) override;
  ::android::hardware::Return<void> initialize_1_1(
      const sp<V1_1::IBluetoothHciCallbacks>& cb) override;

  ::android::hardware::Return<void> sendHciCommand(const ::android::hardware::hidl_vec<uint8_t>& packet) override;

  ::android::hardware::Return<void> sendAclData(const ::android::hardware::hidl_vec<uint8_t>& packet) override;

  ::android::hardware::Return<void> sendScoData(const ::android::hardware::hidl_vec<uint8_t>& packet) override;

  ::android::hardware::Return<void> sendIsoData(
      const ::android::hardware::hidl_vec<uint8_t>& packet) override;

  ::android::hardware::Return<void> close() override;

  static void OnPacketReady();

  static BluetoothHci* get();

 private:
  ::android::hardware::Return<void> initialize_impl(
      const sp<V1_0::IBluetoothHciCallbacks>& cb,
      const sp<V1_1::IBluetoothHciCallbacks>& cb_1_1);

  sp<BluetoothDeathRecipient> death_recipient_;

  std::function<void(sp<BluetoothDeathRecipient>&)> unlink_cb_;

  void HandleIncomingPacket();

  test_vendor_lib::AsyncManager async_manager_;

  void SetUpTestChannel(int port);
  void SetUpHciServer(int port, const std::function<void(int)>& on_connect);
  void SetUpLinkLayerServer(int port, const std::function<void(int)>& on_connect);
  int ConnectToRemoteServer(const std::string& server, int port);

  std::shared_ptr<test_vendor_lib::DualModeController> controller_;

  test_vendor_lib::TestChannelTransport test_channel_transport_;
  test_vendor_lib::TestChannelTransport remote_hci_transport_;
  test_vendor_lib::TestChannelTransport remote_link_layer_transport_;

  test_vendor_lib::AsyncUserId user_id_ = async_manager_.GetNextUserId();
  test_vendor_lib::TestModel test_model_{
      [this]() { return async_manager_.GetNextUserId(); },
      [this](test_vendor_lib::AsyncUserId user_id,
             std::chrono::milliseconds delay,
             const test_vendor_lib::TaskCallback& task) {
        return async_manager_.ExecAsync(user_id, delay, task);
      },

      [this](test_vendor_lib::AsyncUserId user_id,
             std::chrono::milliseconds delay, std::chrono::milliseconds period,
             const test_vendor_lib::TaskCallback& task) {
        return async_manager_.ExecAsyncPeriodically(user_id, delay, period,
                                                    task);
      },

      [this](test_vendor_lib::AsyncUserId user_id) {
        async_manager_.CancelAsyncTasksFromUser(user_id);
      },

      [this](test_vendor_lib::AsyncTaskId task) {
        async_manager_.CancelAsyncTask(task);
      },

      [this](const std::string& server, int port) {
        return ConnectToRemoteServer(server, port);
      }};

  test_vendor_lib::TestCommandHandler test_channel_{test_model_};
};

extern "C" IBluetoothHci* HIDL_FETCH_IBluetoothHci(const char* name);

}  // namespace sim
}  // namespace V1_1
}  // namespace bluetooth
}  // namespace hardware
}  // namespace android