/******************************************************************************
 Copyright(C):2015~2018 hzleaper
 FileName:DllLoader.h
 Author:zhikun wu
 Email:zk.wu@hzleaper.com
 Tools:vs2010 pc on company
 Created:2015/04/27
 History:27:4:2015 10:35
 *******************************************************************************/
#ifndef __DLL_LOADER_H
#define __DLL_LOADER_H

#include "zclasses.h"
#include "zfunctions.h"

template<typename initIn, typename initOut, typename freeIn, typename freeOut>
class CDllLoader
{
public:
    typedef initOut (*Func_Lib_Init)(initIn);
    typedef freeOut (*Func_Lib_Free)(freeIn);
public:
    CDllLoader(const char *szLibName, const char *szFuncInit, const char *szFuncFree, const char* szPath = NULL) 
    : m_lib(szLibName) {
        if( NULL != szPath )
        {
            m_lib.setFileName(ZString(szPath) + szLibName);
        }
        m_fpInit = (Func_Lib_Init)m_lib.resolve(szFuncInit);
        m_fpFree = (Func_Lib_Free)m_lib.resolve(szFuncFree);
    }
    CDllLoader(const char *szLibName, const char *szFuncInit, const char *szFuncFree, const ZStringList& dllPaths) {
        ZString szName(szLibName);
#ifdef _DEBUG
        szName.append("d");
#endif
        ZString szPath;
        for (int i = 0; i < dllPaths.size(); ++i)
        {
            szPath = dllPaths[i];
            if (ZKF::qtDllExit(szPath, szName))
            {
                break;
            }
        }
        //
        m_lib.setFileName(szPath + szName);
        m_fpInit = (Func_Lib_Init)m_lib.resolve(szFuncInit);
        m_fpFree = (Func_Lib_Free)m_lib.resolve(szFuncFree);
    }
    ~CDllLoader(void) {
        m_lib.unload();
    }
    initOut  ModuleInit(initIn inParam) {
        if( NULL == m_fpInit ) {
            tpDebugOut("Failed to get the export init function in module init");
            return NULL;
        }
        return m_fpInit(inParam);
    }
    freeOut  ModuleFree(freeIn in) {
        if( NULL != m_fpFree ) {
            m_fpFree(in);
 //           m_fpFree = NULL;
        }
    }
private:
    ZLibrary        m_lib;
    Func_Lib_Init   m_fpInit;
    Func_Lib_Free   m_fpFree;
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////

class CDllLoaderM
{
public:
    typedef void*(*Func_Lib_Init)(void*);
    typedef void(*Func_Lib_Free)();
public:
    CDllLoaderM(const char *szLibName, const char *szFuncInit, const char *szFuncFree, const char* szPath = NULL)
        : m_lib(szLibName) {
        if (NULL != szPath)
        {
            m_lib.setFileName(ZString(szPath) + szLibName);
        }
        //tpDebugOut("single paths: %s, name:%s", szPath, szLibName);
        m_fpInit = (Func_Lib_Init)m_lib.resolve(szFuncInit);
        m_fpFree = (Func_Lib_Free)m_lib.resolve(szFuncFree);
        //tpDebugOut("init function, Name: %s, Address:%d", szFuncInit, (int)m_fpInit);
    }
    CDllLoaderM(const char *szLibName, const char *szFuncInit, const char *szFuncFree, const ZStringList& dllPaths) {
        ZString szName(szLibName);
#ifdef _DEBUG
        szName.append("d");
#endif
        ZString szPath;
        for (int i = 0; i < dllPaths.size(); ++i){
            szPath = dllPaths[i];
            if (ZKF::qtDllExit(szPath, szName)){
                break;
            }
        }
        //tpDebugOut("Multi paths: %s, name:%s", szPath.toLocal8Bit().data(), szName.toLocal8Bit().data());
        //
        m_lib.setFileName(szPath + szName);
        if (m_lib.load()) {
            m_fpInit = (Func_Lib_Init)m_lib.resolve(szFuncInit);
            m_fpFree = (Func_Lib_Free)m_lib.resolve(szFuncFree);
            //tpDebugOut("init function, Name: %s, Address:%d", szFuncInit, (int)m_fpInit);
        }
        else {
            m_fpInit = NULL;
            m_fpFree = NULL;
            tpDebugOut("DllLoader Error: %s", m_lib.errorString().toLocal8Bit().data());
        }
    }
    ~CDllLoaderM(void) {
        m_lib.unload();
    }
    void*  ModuleInit(void* inParam) {
        if (NULL == m_fpInit) {
            tpDebugOut("fail to get Init Function in dll:%s", m_lib.fileName().toLocal8Bit().data());
            return NULL;
        }
        return m_fpInit(inParam);
    }
    void  ModuleFree() {
        if (NULL != m_fpFree) {
            m_fpFree();
            //           m_fpFree = NULL;
        }
    }
private:
    ZLibrary        m_lib;
    Func_Lib_Init   m_fpInit;
    Func_Lib_Free   m_fpFree;
};
#endif