/*
 * Copyright 2021 HIMSA II K/S - www.himsa.com.
 * Represented by EHIMA - www.ehima.com
 *
 * 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.
 */

#include <base/bind.h>
#include <base/bind_helpers.h>
#include <base/location.h>
#include <base/logging.h>
#include <hardware/bluetooth.h>
#include <hardware/bt_has.h>

#include <bitset>
#include <string>
#include <vector>

#include "bta_has_api.h"
#include "btif_common.h"
#include "btif_storage.h"
#include "stack/include/btu.h"

using base::Bind;
using base::Owned;
using base::Passed;
using base::Unretained;
using bluetooth::has::ConnectionState;
using bluetooth::has::ErrorCode;
using bluetooth::has::HasClientCallbacks;
using bluetooth::has::HasClientInterface;
using bluetooth::has::PresetInfo;
using bluetooth::has::PresetInfoReason;

using le_audio::has::HasClient;

namespace {
std::unique_ptr<HasClientInterface> has_client_instance;

class HearingAaccessClientServiceInterfaceImpl : public HasClientInterface,
                                                 public HasClientCallbacks {
  ~HearingAaccessClientServiceInterfaceImpl() override = default;

  void Init(HasClientCallbacks* callbacks) override {
    DVLOG(2) << __func__;
    this->callbacks_ = callbacks;

    do_in_main_thread(
        FROM_HERE,
        Bind(&HasClient::Initialize, this,
             jni_thread_wrapper(
                 FROM_HERE,
                 Bind(&btif_storage_load_bonded_leaudio_has_devices))));
  }

  void Connect(const RawAddress& addr) override {
    DVLOG(2) << __func__ << " addr: " << addr;
    do_in_main_thread(FROM_HERE, Bind(&HasClient::Connect,
                                      Unretained(HasClient::Get()), addr));

    do_in_jni_thread(
        FROM_HERE, Bind(&btif_storage_set_leaudio_has_acceptlist, addr, true));
  }

  void Disconnect(const RawAddress& addr) override {
    DVLOG(2) << __func__ << " addr: " << addr;
    do_in_main_thread(FROM_HERE, Bind(&HasClient::Disconnect,
                                      Unretained(HasClient::Get()), addr));

    do_in_jni_thread(
        FROM_HERE, Bind(&btif_storage_set_leaudio_has_acceptlist, addr, false));
  }

  void SelectActivePreset(std::variant<RawAddress, int> addr_or_group_id,
                          uint8_t preset_index) override {
    DVLOG(2) << __func__ << " preset_index: " << preset_index;

    do_in_main_thread(
        FROM_HERE,
        Bind(&HasClient::SelectActivePreset, Unretained(HasClient::Get()),
             std::move(addr_or_group_id), preset_index));
  }

  void NextActivePreset(
      std::variant<RawAddress, int> addr_or_group_id) override {
    DVLOG(2) << __func__;

    do_in_main_thread(FROM_HERE, Bind(&HasClient::NextActivePreset,
                                      Unretained(HasClient::Get()),
                                      std::move(addr_or_group_id)));
  }

  void PreviousActivePreset(
      std::variant<RawAddress, int> addr_or_group_id) override {
    DVLOG(2) << __func__;

    do_in_main_thread(FROM_HERE, Bind(&HasClient::PreviousActivePreset,
                                      Unretained(HasClient::Get()),
                                      std::move(addr_or_group_id)));
  }

  void GetPresetInfo(const RawAddress& addr, uint8_t preset_index) override {
    DVLOG(2) << __func__ << " addr: " << addr
             << " preset_index: " << preset_index;

    do_in_main_thread(
        FROM_HERE, Bind(&HasClient::GetPresetInfo, Unretained(HasClient::Get()),
                        addr, preset_index));
  }

  void SetPresetName(std::variant<RawAddress, int> addr_or_group_id,
                     uint8_t preset_index, std::string preset_name) override {
    DVLOG(2) << __func__ << " preset_index: " << preset_index
             << " preset_name: " << preset_name;

    do_in_main_thread(
        FROM_HERE, Bind(&HasClient::SetPresetName, Unretained(HasClient::Get()),
                        std::move(addr_or_group_id), preset_index,
                        std::move(preset_name)));
  }

  void RemoveDevice(const RawAddress& addr) override {
    DVLOG(2) << __func__ << " addr: " << addr;

    /* RemoveDevice can be called on devices that don't have BAS enabled */
    if (HasClient::IsHasClientRunning()) {
      do_in_main_thread(FROM_HERE, Bind(&HasClient::Disconnect,
                                        Unretained(HasClient::Get()), addr));
    }

    do_in_jni_thread(FROM_HERE, Bind(&btif_storage_remove_leaudio_has, addr));
  }

  void Cleanup(void) override {
    DVLOG(2) << __func__;
    do_in_main_thread(FROM_HERE, Bind(&HasClient::CleanUp));
  }

  void OnConnectionState(ConnectionState state,
                         const RawAddress& addr) override {
    DVLOG(2) << __func__ << " addr: " << addr;
    do_in_jni_thread(FROM_HERE, Bind(&HasClientCallbacks::OnConnectionState,
                                     Unretained(callbacks_), state, addr));
  }

  void OnDeviceAvailable(const RawAddress& addr, uint8_t features) override {
    DVLOG(2) << __func__ << " addr: " << addr << " features: " << features;

    do_in_jni_thread(FROM_HERE, Bind(&HasClientCallbacks::OnDeviceAvailable,
                                     Unretained(callbacks_), addr, features));
  }

  void OnFeaturesUpdate(const RawAddress& addr, uint8_t features) override {
    DVLOG(2) << __func__ << " addr: " << addr
             << " ha_features: " << std::bitset<8>(features);

    do_in_jni_thread(FROM_HERE, Bind(&HasClientCallbacks::OnFeaturesUpdate,
                                     Unretained(callbacks_), addr, features));
  }

  void OnActivePresetSelected(std::variant<RawAddress, int> addr_or_group_id,
                              uint8_t preset_index) override {
    DVLOG(2) << __func__ << " preset_index: " << preset_index;

    do_in_jni_thread(FROM_HERE,
                     Bind(&HasClientCallbacks::OnActivePresetSelected,
                          Unretained(callbacks_), std::move(addr_or_group_id),
                          preset_index));
  }

  void OnActivePresetSelectError(std::variant<RawAddress, int> addr_or_group_id,
                                 ErrorCode result_code) override {
    DVLOG(2) << __func__ << " result_code: "
             << static_cast<std::underlying_type<ErrorCode>::type>(result_code);

    do_in_jni_thread(
        FROM_HERE,
        Bind(&HasClientCallbacks::OnActivePresetSelectError,
             Unretained(callbacks_), std::move(addr_or_group_id), result_code));
  }

  void OnPresetInfo(std::variant<RawAddress, int> addr_or_group_id,
                    PresetInfoReason change_id,
                    std::vector<PresetInfo> detail_records) override {
    DVLOG(2) << __func__;
    for (const auto& rec : detail_records) {
      DVLOG(2) << "\t index: " << +rec.preset_index << ", change_id: "
               << (std::underlying_type<PresetInfoReason>::type)change_id
               << ", writable: " << rec.writable
               << ", available: " << rec.available
               << ", name: " << rec.preset_name;
    }

    do_in_jni_thread(FROM_HERE,
                     Bind(&HasClientCallbacks::OnPresetInfo,
                          Unretained(callbacks_), std::move(addr_or_group_id),
                          change_id, std::move(detail_records)));
  }

  void OnPresetInfoError(std::variant<RawAddress, int> addr_or_group_id,
                         uint8_t preset_index, ErrorCode result_code) override {
    DVLOG(2) << __func__ << " result_code: "
             << static_cast<std::underlying_type<ErrorCode>::type>(result_code);

    do_in_jni_thread(
        FROM_HERE,
        Bind(&HasClientCallbacks::OnPresetInfoError, Unretained(callbacks_),
             std::move(addr_or_group_id), preset_index, result_code));
  }

  void OnSetPresetNameError(std::variant<RawAddress, int> addr_or_group_id,
                            uint8_t preset_index,
                            ErrorCode result_code) override {
    DVLOG(2) << __func__ << " result_code: "
             << static_cast<std::underlying_type<ErrorCode>::type>(result_code);

    do_in_jni_thread(
        FROM_HERE,
        Bind(&HasClientCallbacks::OnSetPresetNameError, Unretained(callbacks_),
             std::move(addr_or_group_id), preset_index, result_code));
  }

 private:
  HasClientCallbacks* callbacks_;
};

} /* namespace */

HasClientInterface* btif_has_client_get_interface(void) {
  if (!has_client_instance)
    has_client_instance.reset(new HearingAaccessClientServiceInterfaceImpl());

  return has_client_instance.get();
}