//
//  Copyright (C) 2015 Google, Inc.
//
//  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 "service/hal/fake_bluetooth_interface.h"

namespace bluetooth {
namespace hal {

namespace {

FakeBluetoothInterface::Manager g_hal_manager;

int FakeHALEnable(bool start_restricted) {
  return g_hal_manager.enable_succeed ? BT_STATUS_SUCCESS : BT_STATUS_FAIL;
}

int FakeHALDisable() {
  return g_hal_manager.disable_succeed ? BT_STATUS_SUCCESS : BT_STATUS_FAIL;
}

int FakeHALGetAdapterProperties() { return BT_STATUS_SUCCESS; }

int FakeHALSetAdapterProperty(const bt_property_t* /* property */) {
  LOG(INFO) << __func__;
  return (g_hal_manager.set_property_succeed ? BT_STATUS_SUCCESS
                                             : BT_STATUS_FAIL);
}

bt_interface_t fake_bt_iface = {
    sizeof(bt_interface_t),
    nullptr, /* init */
    FakeHALEnable,
    FakeHALDisable,
    nullptr, /* cleanup */
    FakeHALGetAdapterProperties,
    nullptr, /* get_adapter_property */
    FakeHALSetAdapterProperty,
    nullptr, /* get_remote_device_properties */
    nullptr, /* get_remote_device_property */
    nullptr, /* set_remote_device_property */
    nullptr, /* get_remote_service_record */
    nullptr, /* get_remote_services */
    nullptr, /* start_discovery */
    nullptr, /* cancel_discovery */
    nullptr, /* create_bond */
    nullptr, /* create_bond_out_of_band */
    nullptr, /* remove_bond */
    nullptr, /* cancel_bond */
    nullptr, /* get_connection_state */
    nullptr, /* pin_reply */
    nullptr, /* ssp_reply */
    nullptr, /* get_profile_interface */
    nullptr, /* dut_mode_configure */
    nullptr, /* dut_more_send */
    nullptr, /* le_test_mode */
    nullptr, /* set_os_callouts */
    nullptr, /* read_energy_info */
    nullptr, /* dump */
    nullptr, /* config clear */
    nullptr, /* interop_database_clear */
    nullptr  /* interop_database_add */
};

}  // namespace

// static
FakeBluetoothInterface::Manager* FakeBluetoothInterface::GetManager() {
  return &g_hal_manager;
}

FakeBluetoothInterface::Manager::Manager()
    : enable_succeed(false),
      disable_succeed(false),
      set_property_succeed(false) {}

void FakeBluetoothInterface::NotifyAdapterStateChanged(bt_state_t state) {
  FOR_EACH_OBSERVER(Observer, observers_, AdapterStateChangedCallback(state));
}

void FakeBluetoothInterface::NotifyAdapterPropertiesChanged(
    int num_properties, bt_property_t* properties) {
  FOR_EACH_OBSERVER(
      Observer, observers_,
      AdapterPropertiesCallback(BT_STATUS_SUCCESS, num_properties, properties));
}

void FakeBluetoothInterface::NotifyAdapterNamePropertyChanged(
    const std::string& name) {
  bt_bdname_t hal_name;
  strncpy(reinterpret_cast<char*>(hal_name.name), name.c_str(),
          std::min(sizeof(hal_name) - 1, name.length()));
  reinterpret_cast<char*>(hal_name.name)[name.length()] = '\0';

  bt_property_t property;
  property.len = sizeof(hal_name);
  property.val = &hal_name;
  property.type = BT_PROPERTY_BDNAME;

  NotifyAdapterPropertiesChanged(1, &property);
}

void FakeBluetoothInterface::NotifyAdapterAddressPropertyChanged(
    const bt_bdaddr_t* address) {
  bt_property_t property;
  property.len = sizeof(bt_bdaddr_t);
  property.val = (void*)address;
  property.type = BT_PROPERTY_BDADDR;

  NotifyAdapterPropertiesChanged(1, &property);
}

void FakeBluetoothInterface::NotifyAdapterLocalLeFeaturesPropertyChanged(
    const bt_local_le_features_t* features) {
  bt_property_t property;
  property.len = sizeof(*features);
  property.val = (void*)features;
  property.type = BT_PROPERTY_LOCAL_LE_FEATURES;

  NotifyAdapterPropertiesChanged(1, &property);
}

void FakeBluetoothInterface::NotifyAclStateChangedCallback(
    bt_status_t status, const bt_bdaddr_t& remote_bdaddr,
    bt_acl_state_t state) {
  FOR_EACH_OBSERVER(Observer, observers_,
                    AclStateChangedCallback(status, remote_bdaddr, state));
}

void FakeBluetoothInterface::AddObserver(Observer* observer) {
  observers_.AddObserver(observer);
}

void FakeBluetoothInterface::RemoveObserver(Observer* observer) {
  observers_.RemoveObserver(observer);
}

const bt_interface_t* FakeBluetoothInterface::GetHALInterface() const {
  return &fake_bt_iface;
}

bt_callbacks_t* FakeBluetoothInterface::GetHALCallbacks() const {
  return nullptr;
}

const bluetooth_device_t* FakeBluetoothInterface::GetHALAdapter() const {
  // TODO(armansito): Do something meaningful here to simulate test behavior.
  return nullptr;
}

}  // namespace hal
}  // namespace bluetooth