#include "config.h"

#include "dump_manager_system.hpp"

#include "dump_utils.hpp"
#include "system_dump_entry.hpp"
#include "xyz/openbmc_project/Common/error.hpp"

#include <phosphor-logging/elog-errors.hpp>
#include <phosphor-logging/elog.hpp>

namespace openpower
{
namespace dump
{
namespace system
{

using namespace phosphor::logging;
using namespace sdbusplus::xyz::openbmc_project::Common::Error;

void Manager::notify(uint32_t dumpId, uint64_t size)
{

    // Get the timestamp
    std::time_t timeStamp = std::time(nullptr);

    // System dump can get created due to a fault in server
    // or by request from user. A system dump by fault is
    // first reported here, but for a user requested dump an
    // entry will be created first with invalid source id.
    // Since there can be only one system dump creation at a time,
    // if there is an entry with invalid sourceId update that.
    for (auto& entry : entries)
    {
        openpower::dump::system::Entry* sysEntry =
            dynamic_cast<openpower::dump::system::Entry*>(entry.second.get());
        if (sysEntry->sourceDumpId() == INVALID_SOURCE_ID)
        {
            sysEntry->update(timeStamp, size, dumpId);
            return;
        }
    }

    // Get the id
    auto id = lastEntryId + 1;
    auto idString = std::to_string(id);
    auto objPath = fs::path(baseEntryPath) / idString;

    try
    {
        entries.insert(std::make_pair(
            id, std::make_unique<system::Entry>(
                    bus, objPath.c_str(), id, timeStamp, size, dumpId,
                    phosphor::dump::OperationStatus::Completed, *this)));
    }
    catch (const std::invalid_argument& e)
    {
        log<level::ERR>(e.what());
        log<level::ERR>("Error in creating system dump entry",
                        entry("OBJECTPATH=%s", objPath.c_str()),
                        entry("ID=%d", id), entry("TIMESTAMP=%ull", timeStamp),
                        entry("SIZE=%d", size), entry("SOURCEID=%d", dumpId));
        report<InternalFailure>();
        return;
    }
    lastEntryId++;
    return;
}

sdbusplus::message::object_path
    Manager::createDump(std::map<std::string, std::string> params)
{
    constexpr auto SYSTEMD_SERVICE = "org.freedesktop.systemd1";
    constexpr auto SYSTEMD_OBJ_PATH = "/org/freedesktop/systemd1";
    constexpr auto SYSTEMD_INTERFACE = "org.freedesktop.systemd1.Manager";
    constexpr auto DIAG_MOD_TARGET = "obmc-host-crash@0.target";

    if (!params.empty())
    {
        log<level::WARNING>("System dump accepts no additional parameters");
    }

    using NotAllowed =
        sdbusplus::xyz::openbmc_project::Common::Error::NotAllowed;
    using Reason = xyz::openbmc_project::Common::NotAllowed::REASON;

    // Allow creating system dump only when the host is up.
    if (!phosphor::dump::isHostRunning())
    {
        elog<NotAllowed>(
            Reason("System dump can be initiated only when the host is up"));
        return std::string();
    }

    auto b = sdbusplus::bus::new_default();
    auto method = bus.new_method_call(SYSTEMD_SERVICE, SYSTEMD_OBJ_PATH,
                                      SYSTEMD_INTERFACE, "StartUnit");
    method.append(DIAG_MOD_TARGET); // unit to activate
    method.append("replace");
    bus.call_noreply(method);

    auto id = lastEntryId + 1;
    auto idString = std::to_string(id);
    auto objPath = fs::path(baseEntryPath) / idString;
    std::time_t timeStamp = std::time(nullptr);

    try
    {
        entries.insert(std::make_pair(
            id, std::make_unique<system::Entry>(
                    bus, objPath.c_str(), id, timeStamp, 0, INVALID_SOURCE_ID,
                    phosphor::dump::OperationStatus::InProgress, *this)));
    }
    catch (const std::invalid_argument& e)
    {
        log<level::ERR>(e.what());
        log<level::ERR>("Error in creating system dump entry",
                        entry("OBJECTPATH=%s", objPath.c_str()),
                        entry("ID=%d", id));
        elog<InternalFailure>();
        return std::string();
    }
    lastEntryId++;
    return objPath.string();
}

} // namespace system
} // namespace dump
} // namespace openpower