#include "DetectorLib.h"

#include "SysUtils.h"

#if defined(LINUX)
#include <dlfcn.h>
#endif

#define DET_LIB_INFO_LEN 1000

NAMESPACE_MAS_BEGIN

DetectorLib::DetectorLib(const std::string & path)
	: m_path(path),
	  m_detKey(""),
	  m_sohd(INVALID_DLLHD),
	  m_initialize(nullptr),
	  m_dispose(nullptr),
	  m_buildDetector(nullptr),
	  m_destroyDetector(nullptr),
	  m_getInformation(nullptr) {}

DetectorLib::~DetectorLib()
{
	if (m_sohd != INVALID_DLLHD)
	{
		if (m_dispose)
		{
			m_dispose();
		}
		tzc::SysUtils::FreeLibrary(m_sohd);
		m_sohd = INVALID_DLLHD;
	}
}

TZ_INT DetectorLib::Initialize(DetectorInfo & jinfo)
{
	m_sohd = tzc::SysUtils::LoadLibrary(m_path);

	if (m_sohd == INVALID_DLLHD)
	{
		TZLogError("Load DLL %s failed, dlerror: %s!!", m_path.c_str(), dlerror());

		return MEC_FAILED;
	}

	m_initialize = (DET_Initialize)tzc::SysUtils::GetSymbol(m_sohd, INITIALIZE_DETECTOR_SYMBOL);
	if (!m_initialize)
	{
		TZLogError("Get INITIALIZE_DETECTOR_SYMBOL failed, invalid DLL %s!!", m_path.c_str());
		return MEC_FAILED;
	}

	m_dispose = (DET_Dispose)tzc::SysUtils::GetSymbol(m_sohd, DISPOSE_DETECTOR_SYMBOL);
	if (!m_dispose)
	{
		TZLogError("Get DISPOSE_DETECTOR_SYMBOL failed, invalid DLL %s!!", m_path.c_str());
		return MEC_FAILED;
	}

	m_buildDetector = (DET_BuildDetector)tzc::SysUtils::GetSymbol(m_sohd, BUILD_DETECTOR_SYMBOL);
	if (!m_buildDetector)
	{
		TZLogError("Get BUILD_DETECTOR_SYMBOL failed, invalid DLL %s!!", m_path.c_str());
		return MEC_FAILED;
	}

	m_destroyDetector = (DET_DestroyDetector)tzc::SysUtils::GetSymbol(m_sohd, DESTROY_DETECTOR_SYMBOL);
	if (!m_destroyDetector)
	{
		TZLogError("Get DESTROY_DETECTOR_SYMBOL failed, invalid DLL %s!!", m_path.c_str());
		return MEC_FAILED;
	}

	m_getInformation = (DET_GetInformation)tzc::SysUtils::GetSymbol(m_sohd, INFO_DETECTOR_SYMBOL);
	if (!m_getInformation)
	{
		TZLogError("Get INFO_DETECTOR_SYMBOL failed, invalid DLL %s!!", m_path.c_str());
		return MEC_FAILED;
	}

	TZLogInfo("Initialize SONode of DLL %s succeed~~~", m_path.c_str());

	std::string sinfo;
	this->GetInformation(sinfo);
	DetectorInfo::fromJson(sinfo, jinfo);
	m_detKey = jinfo.Key;

	return m_initialize();
}

Detector DetectorLib::BuildDetector()
{
	if (!m_buildDetector)
	{
		TZLogWarn("m_buildDetector is NULL, maybe it has not been initialized!!!");
		return nullptr;
	}

	return m_buildDetector();
}

TZ_INT DetectorLib::DestroyDetector(Detector * pdet)
{
	if (!m_destroyDetector)
	{
		TZLogWarn("m_destroyDetector is NULL, maybe it has not been initialized!!!");
		return MEC_NULL_OBJ;
	}

	return m_destroyDetector(pdet);
}

TZ_INT DetectorLib::GetInformation(std::string & info)
{
	if (!m_getInformation)
	{
		TZLogWarn("m_getInformation is NULL, maybe it has not been initialized!!!");
		return MEC_NULL_OBJ;
	}

	TZ_CHAR cinfo[DET_LIB_INFO_LEN + 10];
	TZ_INT irst = m_getInformation(cinfo);
	if (irst)
	{
		TZLogWarn("%s m_getInformation failed!!", m_path.c_str());
		return irst;
	}

	info = cinfo;

	return MEC_OK;
}

void DetectorLib::GetDetLibKey(std::string & detKey)
{
	detKey = m_detKey;
}

NAMESPACE_MAS_END