#include "host_monitor_app.hpp"

#include "boot_manager.hpp"
#include "utils.hpp"

#include <fmt/printf.h>

#include <boost/container/flat_map.hpp>
#include <sdbusplus/bus.hpp>
#include <sdbusplus/bus/match.hpp>
#include <sdbusplus/message.hpp>

#include <memory>
#include <string>
#include <string_view>
#include <variant>

namespace boot_time_monitor
{

constexpr std::string_view kHostPath = "/xyz/openbmc_project/state/host0";
constexpr std::string_view kHostIface = "xyz.openbmc_project.State.Host";
constexpr std::string_view kHostProperty = "CurrentHostState";

constexpr std::string_view kHostStateRunning =
    "xyz.openbmc_project.State.Host.HostState.Running";
constexpr std::string_view kHostStateOff =
    "xyz.openbmc_project.State.Host.HostState.Off";

HostMonitorApp::HostMonitorApp(sdbusplus::bus::bus& bus, uint32_t hostNum) :
    kNodeName(std::string{"host"} + std::to_string(hostNum)),
    kObjPath(std::string{"/xyz/openbmc_project/time/boot/"} + kNodeName),
    objManager(bus, kObjPath.c_str())
{
    util = std::make_shared<Util>();
    cpCSV = std::make_shared<FileUtil>(util->getCPPath(kNodeName, false));
    durCSV = std::make_shared<FileUtil>(util->getDurPath(kNodeName, false));
    bm = std::make_shared<BootManager>(util, cpCSV, durCSV);

    powerMatcher = std::make_unique<sdbusplus::bus::match::match>(
        bus,
        sdbusplus::bus::match::rules::propertiesChanged(kHostPath.data(),
                                                        kHostIface.data()),
        [this](sdbusplus::message::message& message) {
        constexpr std::string_view kS0 = "S0";
        constexpr std::string_view kS5 = "S5";

        std::string objectName;
        boost::container::flat_map<
            std::string,
            std::variant<std::string, bool, int64_t, uint64_t, double>>
            values;
        message.read(objectName, values);

        auto findState = values.find(kHostProperty.data());
        if (findState != values.end())
        {
            if (std::get<std::string>(findState->second) == kHostStateRunning)
            {
                bm->setCheckpoint(kS0.data(), 0, 0);
            }
            else if (std::get<std::string>(findState->second) == kHostStateOff)
            {
                bm->setCheckpoint(kS5.data(), 0, 0);
            }
        }
        });
}

} // namespace boot_time_monitor