/*
 *    Copyright (c) 2022 Project CHIP Authors
 *    All rights reserved.
 *
 *    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/ConfigurationManager.h>

#include <platform/internal/GenericConfigurationManagerImpl.ipp>

#include <lib/core/CHIPVendorIdentifiers.hpp>
#include <platform/DiagnosticDataProvider.h>

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

extern "C" {
#include <bl_sys.h>
}

namespace chip {
namespace DeviceLayer {

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

/** Singleton instance of the ConfigurationManager implementation object.
 */
ConfigurationManagerImpl & ConfigurationManagerImpl::GetDefaultInstance()
{
    static ConfigurationManagerImpl sInstance;
    return sInstance;
}

CHIP_ERROR ConfigurationManagerImpl::Init()
{
    CHIP_ERROR err;
    bool failSafeArmed;
    uint32_t rebootCount = 0;

    err = Internal::GenericConfigurationManagerImpl<BL702Config>::Init();

    BL_RST_REASON_E bootCause = bl_sys_rstinfo_get();
    mBootReason               = to_underlying(BootReasonType::kUnspecified);
    if (BL_RST_POR == bootCause)
    {
        mBootReason = to_underlying(BootReasonType::kPowerOnReboot);
    }
    else if (BL_RST_BOR == bootCause)
    {
        mBootReason = to_underlying(BootReasonType::kBrownOutReset);
    }
    else if (BL_RST_WDT == bootCause)
    {
        mBootReason = to_underlying(BootReasonType::kHardwareWatchdogReset);
    }
    // else if (BL_RST_HBN == bootCause) {
    //     mBootReason = BootReasonType::SoftwareReset;
    // }
    else if (BL_RST_SOFTWARE == bootCause)
    {
        mBootReason = to_underlying(BootReasonType::kSoftwareReset);
    }

    if (BL_RST_HBN != bootCause)
    {
        if (CHIP_NO_ERROR == ReadConfigValue(BL702Config::kCounterKey_RebootCount, rebootCount))
        {
            rebootCount += 1;
        }
        WriteConfigValue(BL702Config::kCounterKey_RebootCount, rebootCount + 1);
    }

    if (!BL702Config::ConfigValueExists(BL702Config::kCounterKey_TotalOperationalHours))
    {
        ReturnErrorOnFailure(StoreTotalOperationalHours(0));
    }

    // If the fail-safe was armed when the device last shutdown, initiate a factory reset.
    if (GetFailSafeArmed(failSafeArmed) == CHIP_NO_ERROR && failSafeArmed)
    {
        ChipLogProgress(DeviceLayer, "Detected fail-safe armed on reboot; initiating factory reset");
        InitiateFactoryReset();
    }
    err = CHIP_NO_ERROR;

    return err;
}

bool ConfigurationManagerImpl::CanFactoryReset()
{
    // TODO: query the application to determine if factory reset is allowed.
    return true;
}

void ConfigurationManagerImpl::InitiateFactoryReset()
{
    PlatformMgr().ScheduleWork(DoFactoryReset);
}

CHIP_ERROR ConfigurationManagerImpl::ReadPersistedStorageValue(::chip::Platform::PersistedStorage::Key key, uint32_t & value)
{
    char keyname[sizeof(KCONFIG_SECT_PSV) + 10];

    sprintf(keyname, "%s_%x", KCONFIG_SECT_PSV, key);

    CHIP_ERROR err = ReadConfigValue(keyname, value);
    if (err == CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND)
    {
        err = CHIP_ERROR_PERSISTED_STORAGE_VALUE_NOT_FOUND;
    }
    return err;
}

CHIP_ERROR ConfigurationManagerImpl::WritePersistedStorageValue(::chip::Platform::PersistedStorage::Key key, uint32_t value)
{
    char keyname[sizeof(KCONFIG_SECT_PSV) + 10];

    sprintf(keyname, "%s_%d", KCONFIG_SECT_PSV, key);

    return WriteConfigValue(keyname, value);
}

CHIP_ERROR ConfigurationManagerImpl::GetRebootCount(uint32_t & rebootCount)
{
    return ReadConfigValue(BL702Config::kCounterKey_RebootCount, rebootCount);
}

CHIP_ERROR ConfigurationManagerImpl::StoreRebootCount(uint32_t rebootCount)
{
    return WriteConfigValue(BL702Config::kCounterKey_RebootCount, rebootCount);
}

CHIP_ERROR ConfigurationManagerImpl::GetTotalOperationalHours(uint32_t & totalOperationalHours)
{
    return ReadConfigValue(BL702Config::kCounterKey_TotalOperationalHours, totalOperationalHours);
}

CHIP_ERROR ConfigurationManagerImpl::StoreTotalOperationalHours(uint32_t totalOperationalHours)
{
    return WriteConfigValue(BL702Config::kCounterKey_TotalOperationalHours, totalOperationalHours);
}

CHIP_ERROR ConfigurationManagerImpl::GetBootReason(uint32_t & bootReason)
{
    bootReason = mBootReason;
    return CHIP_NO_ERROR;
}

CHIP_ERROR ConfigurationManagerImpl::ReadConfigValue(Key key, bool & val)
{
    return BL702Config::ReadConfigValue(key, val);
}

CHIP_ERROR ConfigurationManagerImpl::ReadConfigValue(Key key, uint32_t & val)
{
    return BL702Config::ReadConfigValue(key, val);
}

CHIP_ERROR ConfigurationManagerImpl::ReadConfigValue(Key key, uint64_t & val)
{
    return BL702Config::ReadConfigValue(key, val);
}

CHIP_ERROR ConfigurationManagerImpl::ReadConfigValueStr(Key key, char * buf, size_t bufSize, size_t & outLen)
{
    return BL702Config::ReadConfigValueStr(key, buf, bufSize, outLen);
}

CHIP_ERROR ConfigurationManagerImpl::ReadConfigValueBin(Key key, uint8_t * buf, size_t bufSize, size_t & outLen)
{
    return BL702Config::ReadConfigValueBin(key, buf, bufSize, outLen);
}

CHIP_ERROR ConfigurationManagerImpl::WriteConfigValue(Key key, bool val)
{
    return BL702Config::WriteConfigValue(key, val);
}

CHIP_ERROR ConfigurationManagerImpl::WriteConfigValue(Key key, uint32_t val)
{
    return BL702Config::WriteConfigValue(key, val);
}

CHIP_ERROR ConfigurationManagerImpl::WriteConfigValue(Key key, uint64_t val)
{
    return BL702Config::WriteConfigValue(key, val);
}

CHIP_ERROR ConfigurationManagerImpl::WriteConfigValueStr(Key key, const char * str)
{
    return BL702Config::WriteConfigValueStr(key, str);
}

CHIP_ERROR ConfigurationManagerImpl::WriteConfigValueStr(Key key, const char * str, size_t strLen)
{
    return BL702Config::WriteConfigValueStr(key, str, strLen);
}

CHIP_ERROR ConfigurationManagerImpl::WriteConfigValueBin(Key key, const uint8_t * data, size_t dataLen)
{
    return BL702Config::WriteConfigValueBin(key, data, dataLen);
}

void ConfigurationManagerImpl::RunConfigUnitTest(void)
{
    BL702Config::RunConfigUnitTest();
}

void ConfigurationManagerImpl::DoFactoryReset(intptr_t arg)
{
    CHIP_ERROR err;

    ChipLogProgress(DeviceLayer, "Performing factory reset");

    err = BL702Config::FactoryResetConfig();
    if (err != CHIP_NO_ERROR)
    {
        ChipLogError(DeviceLayer, "FactoryResetConfig() failed: %s", ErrorStr(err));
    }

    // Restart the system.
    ChipLogProgress(DeviceLayer, "System restarting");
    bl_sys_reset_por();
}

ConfigurationManager & ConfigurationMgrImpl()
{
    return ConfigurationManagerImpl::GetDefaultInstance();
}

} // namespace DeviceLayer
} // namespace chip