/*
 * Copyright (C) 2016 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.
 */

#include <android-base/logging.h>

#include "hidl_return_util.h"
#include "hidl_struct_util.h"
#include "wifi_rtt_controller.h"
#include "wifi_status_util.h"

namespace android {
namespace hardware {
namespace wifi {
namespace V1_0 {
namespace implementation {
using hidl_return_util::validateAndCall;

WifiRttController::WifiRttController(
    const sp<IWifiIface>& bound_iface,
    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal)
    : bound_iface_(bound_iface), legacy_hal_(legacy_hal), is_valid_(true) {}

void WifiRttController::invalidate() {
  legacy_hal_.reset();
  event_callbacks_.clear();
  is_valid_ = false;
}

bool WifiRttController::isValid() {
  return is_valid_;
}

std::vector<sp<IWifiRttControllerEventCallback>>
WifiRttController::getEventCallbacks() {
  return event_callbacks_;
}

Return<void> WifiRttController::getBoundIface(getBoundIface_cb hidl_status_cb) {
  return validateAndCall(this,
                         WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
                         &WifiRttController::getBoundIfaceInternal,
                         hidl_status_cb);
}

Return<void> WifiRttController::registerEventCallback(
    const sp<IWifiRttControllerEventCallback>& callback,
    registerEventCallback_cb hidl_status_cb) {
  return validateAndCall(this,
                         WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
                         &WifiRttController::registerEventCallbackInternal,
                         hidl_status_cb,
                         callback);
}

Return<void> WifiRttController::rangeRequest(
    uint32_t cmd_id,
    const hidl_vec<RttConfig>& rtt_configs,
    rangeRequest_cb hidl_status_cb) {
  return validateAndCall(this,
                         WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
                         &WifiRttController::rangeRequestInternal,
                         hidl_status_cb,
                         cmd_id,
                         rtt_configs);
}

Return<void> WifiRttController::rangeCancel(
    uint32_t cmd_id,
    const hidl_vec<hidl_array<uint8_t, 6>>& addrs,
    rangeCancel_cb hidl_status_cb) {
  return validateAndCall(this,
                         WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
                         &WifiRttController::rangeCancelInternal,
                         hidl_status_cb,
                         cmd_id,
                         addrs);
}

Return<void> WifiRttController::getCapabilities(
    getCapabilities_cb hidl_status_cb) {
  return validateAndCall(this,
                         WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
                         &WifiRttController::getCapabilitiesInternal,
                         hidl_status_cb);
}

Return<void> WifiRttController::setLci(uint32_t cmd_id,
                                       const RttLciInformation& lci,
                                       setLci_cb hidl_status_cb) {
  return validateAndCall(this,
                         WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
                         &WifiRttController::setLciInternal,
                         hidl_status_cb,
                         cmd_id,
                         lci);
}

Return<void> WifiRttController::setLcr(uint32_t cmd_id,
                                       const RttLcrInformation& lcr,
                                       setLcr_cb hidl_status_cb) {
  return validateAndCall(this,
                         WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
                         &WifiRttController::setLcrInternal,
                         hidl_status_cb,
                         cmd_id,
                         lcr);
}

Return<void> WifiRttController::getResponderInfo(
    getResponderInfo_cb hidl_status_cb) {
  return validateAndCall(this,
                         WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
                         &WifiRttController::getResponderInfoInternal,
                         hidl_status_cb);
}

Return<void> WifiRttController::enableResponder(
    uint32_t cmd_id,
    const WifiChannelInfo& channel_hint,
    uint32_t max_duration_seconds,
    const RttResponder& info,
    enableResponder_cb hidl_status_cb) {
  return validateAndCall(this,
                         WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
                         &WifiRttController::enableResponderInternal,
                         hidl_status_cb,
                         cmd_id,
                         channel_hint,
                         max_duration_seconds,
                         info);
}

Return<void> WifiRttController::disableResponder(
    uint32_t cmd_id, disableResponder_cb hidl_status_cb) {
  return validateAndCall(this,
                         WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
                         &WifiRttController::disableResponderInternal,
                         hidl_status_cb,
                         cmd_id);
}

std::pair<WifiStatus, sp<IWifiIface>>
WifiRttController::getBoundIfaceInternal() {
  return {createWifiStatus(WifiStatusCode::SUCCESS), bound_iface_};
}

WifiStatus WifiRttController::registerEventCallbackInternal(
    const sp<IWifiRttControllerEventCallback>& callback) {
  // TODO(b/31632518): remove the callback when the client is destroyed
  event_callbacks_.emplace_back(callback);
  return createWifiStatus(WifiStatusCode::SUCCESS);
}

WifiStatus WifiRttController::rangeRequestInternal(
    uint32_t cmd_id, const std::vector<RttConfig>& rtt_configs) {
  std::vector<legacy_hal::wifi_rtt_config> legacy_configs;
  if (!hidl_struct_util::convertHidlVectorOfRttConfigToLegacy(
          rtt_configs, &legacy_configs)) {
    return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
  }
  android::wp<WifiRttController> weak_ptr_this(this);
  const auto& on_results_callback = [weak_ptr_this](
      legacy_hal::wifi_request_id id,
      const std::vector<const legacy_hal::wifi_rtt_result*>& results) {
    const auto shared_ptr_this = weak_ptr_this.promote();
    if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
      LOG(ERROR) << "Callback invoked on an invalid object";
      return;
    }
    std::vector<RttResult> hidl_results;
    if (!hidl_struct_util::convertLegacyVectorOfRttResultToHidl(
            results, &hidl_results)) {
      LOG(ERROR) << "Failed to convert rtt results to HIDL structs";
      return;
    }
    for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
      callback->onResults(id, hidl_results);
    }
  };
  legacy_hal::wifi_error legacy_status =
      legacy_hal_.lock()->startRttRangeRequest(
          cmd_id, legacy_configs, on_results_callback);
  return createWifiStatusFromLegacyError(legacy_status);
}

WifiStatus WifiRttController::rangeCancelInternal(
    uint32_t cmd_id, const std::vector<hidl_array<uint8_t, 6>>& addrs) {
  std::vector<std::array<uint8_t, 6>> legacy_addrs;
  for (const auto& addr : addrs) {
    legacy_addrs.push_back(addr);
  }
  legacy_hal::wifi_error legacy_status =
      legacy_hal_.lock()->cancelRttRangeRequest(cmd_id, legacy_addrs);
  return createWifiStatusFromLegacyError(legacy_status);
}

std::pair<WifiStatus, RttCapabilities>
WifiRttController::getCapabilitiesInternal() {
  legacy_hal::wifi_error legacy_status;
  legacy_hal::wifi_rtt_capabilities legacy_caps;
  std::tie(legacy_status, legacy_caps) =
      legacy_hal_.lock()->getRttCapabilities();
  if (legacy_status != legacy_hal::WIFI_SUCCESS) {
    return {createWifiStatusFromLegacyError(legacy_status), {}};
  }
  RttCapabilities hidl_caps;
  if (!hidl_struct_util::convertLegacyRttCapabilitiesToHidl(legacy_caps,
                                                            &hidl_caps)) {
    return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
  }
  return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
}

WifiStatus WifiRttController::setLciInternal(uint32_t cmd_id,
                                             const RttLciInformation& lci) {
  legacy_hal::wifi_lci_information legacy_lci;
  if (!hidl_struct_util::convertHidlRttLciInformationToLegacy(lci,
                                                              &legacy_lci)) {
    return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
  }
  legacy_hal::wifi_error legacy_status =
      legacy_hal_.lock()->setRttLci(cmd_id, legacy_lci);
  return createWifiStatusFromLegacyError(legacy_status);
}

WifiStatus WifiRttController::setLcrInternal(uint32_t cmd_id,
                                             const RttLcrInformation& lcr) {
  legacy_hal::wifi_lcr_information legacy_lcr;
  if (!hidl_struct_util::convertHidlRttLcrInformationToLegacy(lcr,
                                                              &legacy_lcr)) {
    return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
  }
  legacy_hal::wifi_error legacy_status =
      legacy_hal_.lock()->setRttLcr(cmd_id, legacy_lcr);
  return createWifiStatusFromLegacyError(legacy_status);
}

std::pair<WifiStatus, RttResponder>
WifiRttController::getResponderInfoInternal() {
  legacy_hal::wifi_error legacy_status;
  legacy_hal::wifi_rtt_responder legacy_responder;
  std::tie(legacy_status, legacy_responder) =
      legacy_hal_.lock()->getRttResponderInfo();
  if (legacy_status != legacy_hal::WIFI_SUCCESS) {
    return {createWifiStatusFromLegacyError(legacy_status), {}};
  }
  RttResponder hidl_responder;
  if (!hidl_struct_util::convertLegacyRttResponderToHidl(legacy_responder,
                                                         &hidl_responder)) {
    return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
  }
  return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_responder};
}

WifiStatus WifiRttController::enableResponderInternal(
    uint32_t cmd_id,
    const WifiChannelInfo& channel_hint,
    uint32_t max_duration_seconds,
    const RttResponder& info) {
  legacy_hal::wifi_channel_info legacy_channel_info;
  if (!hidl_struct_util::convertHidlWifiChannelInfoToLegacy(
          channel_hint, &legacy_channel_info)) {
    return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
  }
  legacy_hal::wifi_rtt_responder legacy_responder;
  if (!hidl_struct_util::convertHidlRttResponderToLegacy(info,
                                                         &legacy_responder)) {
    return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
  }
  legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->enableRttResponder(
      cmd_id, legacy_channel_info, max_duration_seconds, legacy_responder);
  return createWifiStatusFromLegacyError(legacy_status);
}

WifiStatus WifiRttController::disableResponderInternal(uint32_t cmd_id) {
  legacy_hal::wifi_error legacy_status =
      legacy_hal_.lock()->disableRttResponder(cmd_id);
  return createWifiStatusFromLegacyError(legacy_status);
}
}  // namespace implementation
}  // namespace V1_0
}  // namespace wifi
}  // namespace hardware
}  // namespace android