/*
 *
 *    Copyright (c) 2020-2021 Project CHIP Authors
 *    Copyright (c) 2019 Nest Labs, 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 <platform/internal/CHIPDeviceLayerInternal.h>

#include <platform/ConnectivityManager.h>
#include <platform/internal/BLEManager.h>

#include <cstdlib>
#include <new>

#include <lib/support/CodeUtils.h>
#include <lib/support/logging/CHIPLogging.h>

#include <platform/internal/GenericConnectivityManagerImpl_UDP.ipp>

#if INET_CONFIG_ENABLE_TCP_ENDPOINT
#include <platform/internal/GenericConnectivityManagerImpl_TCP.ipp>
#endif

#if CHIP_DEVICE_CONFIG_ENABLE_CHIPOBLE
#include <platform/internal/GenericConnectivityManagerImpl_BLE.ipp>
#endif

#if CHIP_DEVICE_CONFIG_ENABLE_THREAD
#include <platform/internal/GenericConnectivityManagerImpl_Thread.ipp>
#endif

#if CHIP_DEVICE_CONFIG_ENABLE_WPA
#include <platform/internal/GenericConnectivityManagerImpl_WiFi.ipp>
#endif

using namespace ::chip;
using namespace ::chip::TLV;
using namespace ::chip::DeviceLayer::Internal;

namespace chip {
namespace DeviceLayer {

ConnectivityManagerImpl ConnectivityManagerImpl::sInstance;

CHIP_ERROR ConnectivityManagerImpl::_Init()
{
    return CHIP_NO_ERROR;
}

void ConnectivityManagerImpl::_OnPlatformEvent(const ChipDeviceEvent * event) {}

#if CHIP_DEVICE_CONFIG_ENABLE_WPA

BitFlags<Internal::GenericConnectivityManagerImpl_WiFi<ConnectivityManagerImpl>::ConnectivityFlags>
    ConnectivityManagerImpl::mConnectivityFlag;

ConnectivityManager::WiFiStationMode ConnectivityManagerImpl::_GetWiFiStationMode()
{
    return mWiFiStationMode;
}

CHIP_ERROR ConnectivityManagerImpl::_SetWiFiStationMode(ConnectivityManager::WiFiStationMode val)
{
    CHIP_ERROR err = CHIP_NO_ERROR;

    VerifyOrExit(val != ConnectivityManager::kWiFiStationMode_NotSupported, err = CHIP_ERROR_INVALID_ARGUMENT);

    if (mWiFiStationMode != val)
    {
        ChipLogProgress(DeviceLayer, "WiFi station mode change: %s -> %s", WiFiStationModeToStr(mWiFiStationMode),
                        WiFiStationModeToStr(val));
    }

    mWiFiStationMode = val;
exit:
    return err;
}

System::Clock::Timeout ConnectivityManagerImpl::_GetWiFiStationReconnectInterval()
{
    return mWiFiStationReconnectInterval;
}

CHIP_ERROR ConnectivityManagerImpl::_SetWiFiStationReconnectInterval(System::Clock::Timeout val)
{
    mWiFiStationReconnectInterval = val;

    return CHIP_NO_ERROR;
}

bool ConnectivityManagerImpl::_IsWiFiStationEnabled()
{
    return GetWiFiStationMode() == kWiFiStationMode_Enabled;
}

bool ConnectivityManagerImpl::_IsWiFiStationConnected()
{
    return false;
}

bool ConnectivityManagerImpl::_IsWiFiStationApplicationControlled()
{
    return mWiFiStationMode == ConnectivityManager::kWiFiStationMode_ApplicationControlled;
}

bool ConnectivityManagerImpl::_IsWiFiStationProvisioned()
{
    return false;
}

void ConnectivityManagerImpl::_ClearWiFiStationProvision() {}

bool ConnectivityManagerImpl::_CanStartWiFiScan()
{
    return false;
}

CHIP_ERROR ConnectivityManagerImpl::_SetWiFiAPMode(WiFiAPMode val)
{
    CHIP_ERROR err = CHIP_NO_ERROR;

    VerifyOrExit(val != kWiFiAPMode_NotSupported, err = CHIP_ERROR_INVALID_ARGUMENT);

    if (mWiFiAPMode != val)
    {
        ChipLogProgress(DeviceLayer, "WiFi AP mode change: %s -> %s", WiFiAPModeToStr(mWiFiAPMode), WiFiAPModeToStr(val));
        mWiFiAPMode = val;

        DeviceLayer::SystemLayer().ScheduleWork(DriveAPState, NULL);
    }

exit:
    return err;
}

void ConnectivityManagerImpl::_DemandStartWiFiAP()
{
    if (mWiFiAPMode == kWiFiAPMode_OnDemand || mWiFiAPMode == kWiFiAPMode_OnDemand_NoStationProvision)
    {
        ChipLogProgress(DeviceLayer, "wpa_supplicant: Demand start WiFi AP");
        mLastAPDemandTime = System::SystemClock().GetMonotonicTimestamp();
        DeviceLayer::SystemLayer().ScheduleWork(DriveAPState, NULL);
    }
    else
    {
        ChipLogProgress(DeviceLayer, "wpa_supplicant: Demand start WiFi AP ignored, mode: %s", WiFiAPModeToStr(mWiFiAPMode));
    }
}

void ConnectivityManagerImpl::_StopOnDemandWiFiAP()
{
    if (mWiFiAPMode == kWiFiAPMode_OnDemand || mWiFiAPMode == kWiFiAPMode_OnDemand_NoStationProvision)
    {
        ChipLogProgress(DeviceLayer, "wpa_supplicant: Demand stop WiFi AP");
        mLastAPDemandTime = System::Clock::kZero;
        DeviceLayer::SystemLayer().ScheduleWork(DriveAPState, NULL);
    }
    else
    {
        ChipLogProgress(DeviceLayer, "wpa_supplicant: Demand stop WiFi AP ignored, mode: %s", WiFiAPModeToStr(mWiFiAPMode));
    }
}

void ConnectivityManagerImpl::_MaintainOnDemandWiFiAP()
{
    if (mWiFiAPMode == kWiFiAPMode_OnDemand || mWiFiAPMode == kWiFiAPMode_OnDemand_NoStationProvision)
    {
        if (mWiFiAPState == kWiFiAPState_Active)
        {
            mLastAPDemandTime = System::SystemClock().GetMonotonicTimestamp();
        }
    }
}

void ConnectivityManagerImpl::_SetWiFiAPIdleTimeout(System::Clock::Timeout val)
{
    mWiFiAPIdleTimeout = val;
    DeviceLayer::SystemLayer().ScheduleWork(DriveAPState, NULL);
}

void ConnectivityManagerImpl::StartWiFiManagement() {}

void ConnectivityManagerImpl::DriveAPState() {}

CHIP_ERROR ConnectivityManagerImpl::ConfigureWiFiAP()
{
    return CHIP_NO_ERROR;
}

void ConnectivityManagerImpl::ChangeWiFiAPState(WiFiAPState newState)
{
    if (mWiFiAPState != newState)
    {
        ChipLogProgress(DeviceLayer, "WiFi AP state change: %s -> %s", WiFiAPStateToStr(mWiFiAPState), WiFiAPStateToStr(newState));
        mWiFiAPState = newState;
    }
}

void ConnectivityManagerImpl::DriveAPState(::chip::System::Layer * aLayer, void * aAppState)
{
    sInstance.DriveAPState();
}
#endif // CHIP_DEVICE_CONFIG_ENABLE_WPA

} // namespace DeviceLayer
} // namespace chip