/*
Copyright (c) 2018 Intel Corporation

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.
*/
#pragma once

#include "bmcweb_config.h"

#include "app.hpp"
#include "dbus_utility.hpp"
#include "generated/enums/memory.hpp"
#include "generated/enums/resource.hpp"
#include "query.hpp"
#include "registries/privilege_registry.hpp"
#include "utils/collection.hpp"
#include "utils/dbus_utils.hpp"
#include "utils/hex_utils.hpp"
#include "utils/json_utils.hpp"

#include <boost/system/error_code.hpp>
#include <boost/url/format.hpp>
#include <nlohmann/json.hpp>
#include <sdbusplus/asio/property.hpp>
#include <sdbusplus/unpack_properties.hpp>

#include <array>
#include <string_view>

namespace redfish
{

inline std::string translateMemoryTypeToRedfish(const std::string& memoryType)
{
    if (memoryType == "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.DDR")
    {
        return "DDR";
    }
    if (memoryType == "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.DDR2")
    {
        return "DDR2";
    }
    if (memoryType == "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.DDR3")
    {
        return "DDR3";
    }
    if (memoryType == "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.DDR4")
    {
        return "DDR4";
    }
    if (memoryType ==
        "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.DDR4E_SDRAM")
    {
        return "DDR4E_SDRAM";
    }
    if (memoryType == "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.DDR5")
    {
        return "DDR5";
    }
    if (memoryType ==
        "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.LPDDR4_SDRAM")
    {
        return "LPDDR4_SDRAM";
    }
    if (memoryType ==
        "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.LPDDR3_SDRAM")
    {
        return "LPDDR3_SDRAM";
    }
    if (memoryType ==
        "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.DDR2_SDRAM_FB_DIMM")
    {
        return "DDR2_SDRAM_FB_DIMM";
    }
    if (memoryType ==
        "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.DDR2_SDRAM_FB_DIMM_PROB")
    {
        return "DDR2_SDRAM_FB_DIMM_PROBE";
    }
    if (memoryType ==
        "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.DDR_SGRAM")
    {
        return "DDR_SGRAM";
    }
    if (memoryType == "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.ROM")
    {
        return "ROM";
    }
    if (memoryType ==
        "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.SDRAM")
    {
        return "SDRAM";
    }
    if (memoryType == "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.EDO")
    {
        return "EDO";
    }
    if (memoryType ==
        "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.FastPageMode")
    {
        return "FastPageMode";
    }
    if (memoryType ==
        "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.PipelinedNibble")
    {
        return "PipelinedNibble";
    }
    if (memoryType ==
        "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.Logical")
    {
        return "Logical";
    }
    if (memoryType == "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.HBM")
    {
        return "HBM";
    }
    if (memoryType == "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.HBM2")
    {
        return "HBM2";
    }
    if (memoryType == "xyz.openbmc_project.Inventory.Item.Dimm.DeviceType.HBM3")
    {
        return "HBM3";
    }
    // This is values like Other or Unknown
    // Also D-Bus values:
    // DRAM
    // EDRAM
    // VRAM
    // SRAM
    // RAM
    // FLASH
    // EEPROM
    // FEPROM
    // EPROM
    // CDRAM
    // ThreeDRAM
    // RDRAM
    // FBD2
    // LPDDR_SDRAM
    // LPDDR2_SDRAM
    // LPDDR5_SDRAM
    return "";
}

inline void dimmPropToHex(const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
                          const char* key, const uint16_t* value,
                          const nlohmann::json::json_pointer& jsonPtr)
{
    if (value == nullptr)
    {
        return;
    }
    asyncResp->res.jsonValue[jsonPtr][key] = "0x" + intToHexString(*value, 4);
}

inline void getPersistentMemoryProperties(
    const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
    const dbus::utility::DBusPropertiesMap& properties,
    const nlohmann::json::json_pointer& jsonPtr)
{
    const uint16_t* moduleManufacturerID = nullptr;
    const uint16_t* moduleProductID = nullptr;
    const uint16_t* subsystemVendorID = nullptr;
    const uint16_t* subsystemDeviceID = nullptr;
    const uint64_t* volatileRegionSizeLimitInKiB = nullptr;
    const uint64_t* pmRegionSizeLimitInKiB = nullptr;
    const uint64_t* volatileSizeInKiB = nullptr;
    const uint64_t* pmSizeInKiB = nullptr;
    const uint64_t* cacheSizeInKB = nullptr;
    const uint64_t* voltaileRegionMaxSizeInKib = nullptr;
    const uint64_t* pmRegionMaxSizeInKiB = nullptr;
    const uint64_t* allocationIncrementInKiB = nullptr;
    const uint64_t* allocationAlignmentInKiB = nullptr;
    const uint64_t* volatileRegionNumberLimit = nullptr;
    const uint64_t* pmRegionNumberLimit = nullptr;
    const uint64_t* spareDeviceCount = nullptr;
    const bool* isSpareDeviceInUse = nullptr;
    const bool* isRankSpareEnabled = nullptr;
    const std::vector<uint32_t>* maxAveragePowerLimitmW = nullptr;
    const bool* configurationLocked = nullptr;
    const std::string* allowedMemoryModes = nullptr;
    const std::string* memoryMedia = nullptr;
    const bool* configurationLockCapable = nullptr;
    const bool* dataLockCapable = nullptr;
    const bool* passphraseCapable = nullptr;
    const uint64_t* maxPassphraseCount = nullptr;
    const uint64_t* passphraseLockLimit = nullptr;

    const bool success = sdbusplus::unpackPropertiesNoThrow(
        dbus_utils::UnpackErrorPrinter(), properties, "ModuleManufacturerID",
        moduleManufacturerID, "ModuleProductID", moduleProductID,
        "SubsystemVendorID", subsystemVendorID, "SubsystemDeviceID",
        subsystemDeviceID, "VolatileRegionSizeLimitInKiB",
        volatileRegionSizeLimitInKiB, "PmRegionSizeLimitInKiB",
        pmRegionSizeLimitInKiB, "VolatileSizeInKiB", volatileSizeInKiB,
        "PmSizeInKiB", pmSizeInKiB, "CacheSizeInKB", cacheSizeInKB,
        "VoltaileRegionMaxSizeInKib", voltaileRegionMaxSizeInKib,
        "PmRegionMaxSizeInKiB", pmRegionMaxSizeInKiB,
        "AllocationIncrementInKiB", allocationIncrementInKiB,
        "AllocationAlignmentInKiB", allocationAlignmentInKiB,
        "VolatileRegionNumberLimit", volatileRegionNumberLimit,
        "PmRegionNumberLimit", pmRegionNumberLimit, "SpareDeviceCount",
        spareDeviceCount, "IsSpareDeviceInUse", isSpareDeviceInUse,
        "IsRankSpareEnabled", isRankSpareEnabled, "MaxAveragePowerLimitmW",
        maxAveragePowerLimitmW, "ConfigurationLocked", configurationLocked,
        "AllowedMemoryModes", allowedMemoryModes, "MemoryMedia", memoryMedia,
        "ConfigurationLockCapable", configurationLockCapable, "DataLockCapable",
        dataLockCapable, "PassphraseCapable", passphraseCapable,
        "MaxPassphraseCount", maxPassphraseCount, "PassphraseLockLimit",
        passphraseLockLimit);

    if (!success)
    {
        messages::internalError(asyncResp->res);
        return;
    }

    dimmPropToHex(asyncResp, "ModuleManufacturerID", moduleManufacturerID,
                  jsonPtr);
    dimmPropToHex(asyncResp, "ModuleProductID", moduleProductID, jsonPtr);
    dimmPropToHex(asyncResp, "MemorySubsystemControllerManufacturerID",
                  subsystemVendorID, jsonPtr);
    dimmPropToHex(asyncResp, "MemorySubsystemControllerProductID",
                  subsystemDeviceID, jsonPtr);

    if (volatileRegionSizeLimitInKiB != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["VolatileRegionSizeLimitMiB"] =
            (*volatileRegionSizeLimitInKiB) >> 10;
    }

    if (pmRegionSizeLimitInKiB != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["PersistentRegionSizeLimitMiB"] =
            (*pmRegionSizeLimitInKiB) >> 10;
    }

    if (volatileSizeInKiB != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["VolatileSizeMiB"] =
            (*volatileSizeInKiB) >> 10;
    }

    if (pmSizeInKiB != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["NonVolatileSizeMiB"] =
            (*pmSizeInKiB) >> 10;
    }

    if (cacheSizeInKB != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["CacheSizeMiB"] =
            (*cacheSizeInKB >> 10);
    }

    if (voltaileRegionMaxSizeInKib != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["VolatileRegionSizeMaxMiB"] =
            (*voltaileRegionMaxSizeInKib) >> 10;
    }

    if (pmRegionMaxSizeInKiB != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["PersistentRegionSizeMaxMiB"] =
            (*pmRegionMaxSizeInKiB) >> 10;
    }

    if (allocationIncrementInKiB != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["AllocationIncrementMiB"] =
            (*allocationIncrementInKiB) >> 10;
    }

    if (allocationAlignmentInKiB != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["AllocationAlignmentMiB"] =
            (*allocationAlignmentInKiB) >> 10;
    }

    if (volatileRegionNumberLimit != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["VolatileRegionNumberLimit"] =
            *volatileRegionNumberLimit;
    }

    if (pmRegionNumberLimit != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["PersistentRegionNumberLimit"] =
            *pmRegionNumberLimit;
    }

    if (spareDeviceCount != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["SpareDeviceCount"] =
            *spareDeviceCount;
    }

    if (isSpareDeviceInUse != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["IsSpareDeviceEnabled"] =
            *isSpareDeviceInUse;
    }

    if (isRankSpareEnabled != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["IsRankSpareEnabled"] =
            *isRankSpareEnabled;
    }

    if (maxAveragePowerLimitmW != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["MaxTDPMilliWatts"] =
            *maxAveragePowerLimitmW;
    }

    if (configurationLocked != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["ConfigurationLocked"] =
            *configurationLocked;
    }

    if (allowedMemoryModes != nullptr)
    {
        constexpr const std::array<const char*, 3> values{"Volatile", "PMEM",
                                                          "Block"};

        for (const char* v : values)
        {
            if (allowedMemoryModes->ends_with(v))
            {
                asyncResp->res.jsonValue[jsonPtr]["OperatingMemoryModes"]
                    .push_back(v);
                break;
            }
        }
    }

    if (memoryMedia != nullptr)
    {
        constexpr const std::array<const char*, 3> values{"DRAM", "NAND",
                                                          "Intel3DXPoint"};

        for (const char* v : values)
        {
            if (memoryMedia->ends_with(v))
            {
                asyncResp->res.jsonValue[jsonPtr]["MemoryMedia"].push_back(v);
                break;
            }
        }
    }

    if (configurationLockCapable != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["SecurityCapabilities"]
                                ["ConfigurationLockCapable"] =
            *configurationLockCapable;
    }

    if (dataLockCapable != nullptr)
    {
        asyncResp->res
            .jsonValue[jsonPtr]["SecurityCapabilities"]["DataLockCapable"] =
            *dataLockCapable;
    }

    if (passphraseCapable != nullptr)
    {
        asyncResp->res
            .jsonValue[jsonPtr]["SecurityCapabilities"]["PassphraseCapable"] =
            *passphraseCapable;
    }

    if (maxPassphraseCount != nullptr)
    {
        asyncResp->res
            .jsonValue[jsonPtr]["SecurityCapabilities"]["MaxPassphraseCount"] =
            *maxPassphraseCount;
    }

    if (passphraseLockLimit != nullptr)
    {
        asyncResp->res
            .jsonValue[jsonPtr]["SecurityCapabilities"]["PassphraseLockLimit"] =
            *passphraseLockLimit;
    }
}

inline void assembleDimmProperties(
    std::string_view dimmId,
    const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
    const dbus::utility::DBusPropertiesMap& properties,
    const nlohmann::json::json_pointer& jsonPtr)
{
    asyncResp->res.jsonValue[jsonPtr]["Id"] = dimmId;
    asyncResp->res.jsonValue[jsonPtr]["Name"] = "DIMM Slot";
    asyncResp->res.jsonValue[jsonPtr]["Status"]["State"] =
        resource::State::Enabled;
    asyncResp->res.jsonValue[jsonPtr]["Status"]["Health"] =
        resource::Health::OK;

    const uint16_t* memoryDataWidth = nullptr;
    const size_t* memorySizeInKB = nullptr;
    const std::string* partNumber = nullptr;
    const std::string* serialNumber = nullptr;
    const std::string* manufacturer = nullptr;
    const uint16_t* revisionCode = nullptr;
    const bool* present = nullptr;
    const uint16_t* memoryTotalWidth = nullptr;
    const std::string* ecc = nullptr;
    const std::string* formFactor = nullptr;
    const std::vector<uint16_t>* allowedSpeedsMT = nullptr;
    const size_t* memoryAttributes = nullptr;
    const uint16_t* memoryConfiguredSpeedInMhz = nullptr;
    const std::string* memoryType = nullptr;
    const std::uint8_t* channel = nullptr;
    const std::uint8_t* memoryController = nullptr;
    const std::uint8_t* slot = nullptr;
    const std::uint8_t* socket = nullptr;
    const std::string* sparePartNumber = nullptr;
    const std::string* model = nullptr;
    const std::string* locationCode = nullptr;

    const bool success = sdbusplus::unpackPropertiesNoThrow(
        dbus_utils::UnpackErrorPrinter(), properties, "MemoryDataWidth",
        memoryDataWidth, "MemorySizeInKB", memorySizeInKB, "PartNumber",
        partNumber, "SerialNumber", serialNumber, "Manufacturer", manufacturer,
        "RevisionCode", revisionCode, "Present", present, "MemoryTotalWidth",
        memoryTotalWidth, "ECC", ecc, "FormFactor", formFactor,
        "AllowedSpeedsMT", allowedSpeedsMT, "MemoryAttributes",
        memoryAttributes, "MemoryConfiguredSpeedInMhz",
        memoryConfiguredSpeedInMhz, "MemoryType", memoryType, "Channel",
        channel, "MemoryController", memoryController, "Slot", slot, "Socket",
        socket, "SparePartNumber", sparePartNumber, "Model", model,
        "LocationCode", locationCode);

    if (!success)
    {
        messages::internalError(asyncResp->res);
        return;
    }

    if (memoryDataWidth != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["DataWidthBits"] = *memoryDataWidth;
    }

    if (memorySizeInKB != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["CapacityMiB"] =
            (*memorySizeInKB >> 10);
    }

    if (partNumber != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["PartNumber"] = *partNumber;
    }

    if (serialNumber != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["SerialNumber"] = *serialNumber;
    }

    if (manufacturer != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["Manufacturer"] = *manufacturer;
    }

    if (revisionCode != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["FirmwareRevision"] =
            std::to_string(*revisionCode);
    }

    if (present != nullptr && !*present)
    {
        asyncResp->res.jsonValue[jsonPtr]["Status"]["State"] =
            resource::State::Absent;
    }

    if (memoryTotalWidth != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["BusWidthBits"] = *memoryTotalWidth;
    }

    if (ecc != nullptr)
    {
        constexpr const std::array<const char*, 4> values{
            "NoECC", "SingleBitECC", "MultiBitECC", "AddressParity"};

        for (const char* v : values)
        {
            if (ecc->ends_with(v))
            {
                asyncResp->res.jsonValue[jsonPtr]["ErrorCorrection"] = v;
                break;
            }
        }
    }

    if (formFactor != nullptr)
    {
        constexpr const std::array<const char*, 11> values{
            "RDIMM",       "UDIMM",       "SO_DIMM",      "LRDIMM",
            "Mini_RDIMM",  "Mini_UDIMM",  "SO_RDIMM_72b", "SO_UDIMM_72b",
            "SO_DIMM_16b", "SO_DIMM_32b", "Die"};

        for (const char* v : values)
        {
            if (formFactor->ends_with(v))
            {
                asyncResp->res.jsonValue[jsonPtr]["BaseModuleType"] = v;
                break;
            }
        }
    }

    if (allowedSpeedsMT != nullptr)
    {
        nlohmann::json& jValue =
            asyncResp->res.jsonValue[jsonPtr]["AllowedSpeedsMHz"];
        jValue = nlohmann::json::array();
        for (uint16_t subVal : *allowedSpeedsMT)
        {
            jValue.push_back(subVal);
        }
    }

    if (memoryAttributes != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["RankCount"] = *memoryAttributes;
    }

    if (memoryConfiguredSpeedInMhz != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["OperatingSpeedMhz"] =
            *memoryConfiguredSpeedInMhz;
    }

    if (memoryType != nullptr)
    {
        std::string memoryDeviceType =
            translateMemoryTypeToRedfish(*memoryType);
        // Values like "Unknown" or "Other" will return empty
        // so just leave off
        if (!memoryDeviceType.empty())
        {
            asyncResp->res.jsonValue[jsonPtr]["MemoryDeviceType"] =
                memoryDeviceType;
        }
        if (memoryType->find("DDR") != std::string::npos)
        {
            asyncResp->res.jsonValue[jsonPtr]["MemoryType"] =
                memory::MemoryType::DRAM;
        }
        else if (memoryType->ends_with("Logical"))
        {
            asyncResp->res.jsonValue[jsonPtr]["MemoryType"] =
                memory::MemoryType::IntelOptane;
        }
    }

    if (channel != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["MemoryLocation"]["Channel"] =
            *channel;
    }

    if (memoryController != nullptr)
    {
        asyncResp->res
            .jsonValue[jsonPtr]["MemoryLocation"]["MemoryController"] =
            *memoryController;
    }

    if (slot != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["MemoryLocation"]["Slot"] = *slot;
    }

    if (socket != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["MemoryLocation"]["Socket"] = *socket;
    }

    if (sparePartNumber != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["SparePartNumber"] = *sparePartNumber;
    }

    if (model != nullptr)
    {
        asyncResp->res.jsonValue[jsonPtr]["Model"] = *model;
    }

    if (locationCode != nullptr)
    {
        asyncResp->res
            .jsonValue[jsonPtr]["Location"]["PartLocation"]["ServiceLabel"] =
            *locationCode;
    }

    getPersistentMemoryProperties(asyncResp, properties, jsonPtr);
}

inline void getDimmDataByService(
    std::shared_ptr<bmcweb::AsyncResp> asyncResp, const std::string& dimmId,
    const std::string& service, const std::string& objPath)
{
    BMCWEB_LOG_DEBUG("Get available system components.");
    dbus::utility::getAllProperties(
        service, objPath, "",
        [dimmId, asyncResp{std::move(asyncResp)}](
            const boost::system::error_code& ec,
            const dbus::utility::DBusPropertiesMap& properties) {
            if (ec)
            {
                BMCWEB_LOG_DEBUG("DBUS response error");
                messages::internalError(asyncResp->res);
                return;
            }
            assembleDimmProperties(dimmId, asyncResp, properties,
                                   ""_json_pointer);
        });
}

inline void assembleDimmPartitionData(
    const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
    const dbus::utility::DBusPropertiesMap& properties,
    const nlohmann::json::json_pointer& regionPtr)
{
    const std::string* memoryClassification = nullptr;
    const uint64_t* offsetInKiB = nullptr;
    const std::string* partitionId = nullptr;
    const bool* passphraseState = nullptr;
    const uint64_t* sizeInKiB = nullptr;

    const bool success = sdbusplus::unpackPropertiesNoThrow(
        dbus_utils::UnpackErrorPrinter(), properties, "MemoryClassification",
        memoryClassification, "OffsetInKiB", offsetInKiB, "PartitionId",
        partitionId, "PassphraseState", passphraseState, "SizeInKiB",
        sizeInKiB);

    if (!success)
    {
        messages::internalError(asyncResp->res);
        return;
    }

    nlohmann::json::object_t partition;

    if (memoryClassification != nullptr)
    {
        partition["MemoryClassification"] = *memoryClassification;
    }

    if (offsetInKiB != nullptr)
    {
        partition["OffsetMiB"] = (*offsetInKiB >> 10);
    }

    if (partitionId != nullptr)
    {
        partition["RegionId"] = *partitionId;
    }

    if (passphraseState != nullptr)
    {
        partition["PassphraseEnabled"] = *passphraseState;
    }

    if (sizeInKiB != nullptr)
    {
        partition["SizeMiB"] = (*sizeInKiB >> 10);
    }

    asyncResp->res.jsonValue[regionPtr].emplace_back(std::move(partition));
}

inline void getDimmPartitionData(std::shared_ptr<bmcweb::AsyncResp> asyncResp,
                                 const std::string& service,
                                 const std::string& path)
{
    dbus::utility::getAllProperties(
        service, path,
        "xyz.openbmc_project.Inventory.Item.PersistentMemory.Partition",
        [asyncResp{std::move(asyncResp)}](
            const boost::system::error_code& ec,
            const dbus::utility::DBusPropertiesMap& properties) {
            if (ec)
            {
                BMCWEB_LOG_DEBUG("DBUS response error");
                messages::internalError(asyncResp->res);

                return;
            }
            nlohmann::json::json_pointer regionPtr = "/Regions"_json_pointer;
            assembleDimmPartitionData(asyncResp, properties, regionPtr);
        }

    );
}

inline void getDimmData(std::shared_ptr<bmcweb::AsyncResp> asyncResp,
                        const std::string& dimmId)
{
    BMCWEB_LOG_DEBUG("Get available system dimm resources.");
    constexpr std::array<std::string_view, 2> dimmInterfaces = {
        "xyz.openbmc_project.Inventory.Item.Dimm",
        "xyz.openbmc_project.Inventory.Item.PersistentMemory.Partition"};
    dbus::utility::getSubTree(
        "/xyz/openbmc_project/inventory", 0, dimmInterfaces,
        [dimmId, asyncResp{std::move(asyncResp)}](
            const boost::system::error_code& ec,
            const dbus::utility::MapperGetSubTreeResponse& subtree) {
            if (ec)
            {
                BMCWEB_LOG_DEBUG("DBUS response error");
                messages::internalError(asyncResp->res);

                return;
            }
            bool found = false;
            for (const auto& [rawPath, object] : subtree)
            {
                sdbusplus::message::object_path path(rawPath);
                for (const auto& [service, interfaces] : object)
                {
                    for (const auto& interface : interfaces)
                    {
                        if (interface ==
                                "xyz.openbmc_project.Inventory.Item.Dimm" &&
                            path.filename() == dimmId)
                        {
                            getDimmDataByService(asyncResp, dimmId, service,
                                                 rawPath);
                            found = true;
                        }

                        // partitions are separate as there can be multiple
                        // per
                        // device, i.e.
                        // /xyz/openbmc_project/Inventory/Item/Dimm1/Partition1
                        // /xyz/openbmc_project/Inventory/Item/Dimm1/Partition2
                        if (interface ==
                                "xyz.openbmc_project.Inventory.Item.PersistentMemory.Partition" &&
                            path.parent_path().filename() == dimmId)
                        {
                            getDimmPartitionData(asyncResp, service, rawPath);
                        }
                    }
                }
            }
            // Object not found
            if (!found)
            {
                messages::resourceNotFound(asyncResp->res, "Memory", dimmId);
                return;
            }
            // Set @odata only if object is found
            asyncResp->res.jsonValue["@odata.type"] = "#Memory.v1_11_0.Memory";
            asyncResp->res.jsonValue["@odata.id"] =
                boost::urls::format("/redfish/v1/Systems/{}/Memory/{}",
                                    BMCWEB_REDFISH_SYSTEM_URI_NAME, dimmId);
            return;
        });
}

inline void requestRoutesMemoryCollection(App& app)
{
    /**
     * Functions triggers appropriate requests on DBus
     */
    BMCWEB_ROUTE(app, "/redfish/v1/Systems/<str>/Memory/")
        .privileges(redfish::privileges::getMemoryCollection)
        .methods(boost::beast::http::verb::get)(
            [&app](const crow::Request& req,
                   const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
                   const std::string& systemName) {
                if (!redfish::setUpRedfishRoute(app, req, asyncResp))
                {
                    return;
                }
                if constexpr (BMCWEB_EXPERIMENTAL_REDFISH_MULTI_COMPUTER_SYSTEM)
                {
                    // Option currently returns no systems.  TBD
                    messages::resourceNotFound(asyncResp->res, "ComputerSystem",
                                               systemName);
                    return;
                }
                if (systemName != BMCWEB_REDFISH_SYSTEM_URI_NAME)
                {
                    messages::resourceNotFound(asyncResp->res, "ComputerSystem",
                                               systemName);
                    return;
                }

                asyncResp->res.jsonValue["@odata.type"] =
                    "#MemoryCollection.MemoryCollection";
                asyncResp->res.jsonValue["Name"] = "Memory Module Collection";
                asyncResp->res.jsonValue["@odata.id"] =
                    boost::urls::format("/redfish/v1/Systems/{}/Memory",
                                        BMCWEB_REDFISH_SYSTEM_URI_NAME);

                constexpr std::array<std::string_view, 1> interfaces{
                    "xyz.openbmc_project.Inventory.Item.Dimm"};
                collection_util::getCollectionMembers(
                    asyncResp,
                    boost::urls::format("/redfish/v1/Systems/{}/Memory",
                                        BMCWEB_REDFISH_SYSTEM_URI_NAME),
                    interfaces, "/xyz/openbmc_project/inventory");
            });
}

inline void requestRoutesMemory(App& app)
{
    /**
     * Functions triggers appropriate requests on DBus
     */
    BMCWEB_ROUTE(app, "/redfish/v1/Systems/<str>/Memory/<str>/")
        .privileges(redfish::privileges::getMemory)
        .methods(boost::beast::http::verb::get)(
            [&app](const crow::Request& req,
                   const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
                   const std::string& systemName, const std::string& dimmId) {
                if (!redfish::setUpRedfishRoute(app, req, asyncResp))
                {
                    return;
                }

                if constexpr (BMCWEB_EXPERIMENTAL_REDFISH_MULTI_COMPUTER_SYSTEM)
                {
                    // Option currently returns no systems.  TBD
                    messages::resourceNotFound(asyncResp->res, "ComputerSystem",
                                               systemName);
                    return;
                }

                if (systemName != BMCWEB_REDFISH_SYSTEM_URI_NAME)
                {
                    messages::resourceNotFound(asyncResp->res, "ComputerSystem",
                                               systemName);
                    return;
                }

                getDimmData(asyncResp, dimmId);
            });
}

} // namespace redfish