/*
 * Copyright (C) 2016+     AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license: http://github.com/azerothcore/azerothcore-wotlk/LICENSE-GPL2
 * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
 * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
 */

#include "vmapexport.h"
#include "adtfile.h"

#include <algorithm>
#include <cstdio>

#ifdef WIN32
#define snprintf _snprintf
#endif

char const* GetPlainName(char const* FileName)
{
    const char * szTemp;

    if((szTemp = strrchr(FileName, '\\')) != NULL)
        FileName = szTemp + 1;
    return FileName;
}

char* GetPlainName(char* FileName)
{
    char * szTemp;

    if((szTemp = strrchr(FileName, '\\')) != NULL)
        FileName = szTemp + 1;
    return FileName;
}

void fixnamen(char* name, size_t len)
{
    for (size_t i = 0; i < len-3; i++)
    {
        if (i > 0 && name[i] >= 'A' && name[i] <= 'Z' && isalpha(name[i-1]))
            name[i] |= 0x20;
        else if ((i == 0 || !isalpha(name[i-1])) && name[i]>='a' && name[i]<='z')
            name[i] &= ~0x20;
    }
    //extension in lowercase
    for (size_t i = len - 3; i < len; i++)
        name[i] |= 0x20;
}

void fixname2(char* name, size_t len)
{
    for (size_t i=0; i<len-3; i++)
    {
        if(name[i] == ' ')
        name[i] = '_';
    }
}

char* GetExtension(char* FileName)
{
    if (char* szTemp = strrchr(FileName, '.'))
        return szTemp;
    return NULL;
}

ADTFile::ADTFile(char* filename): ADT(filename), nWMO(0), nMDX(0), WmoInstansName(NULL), ModelInstansName(NULL)
{
    Adtfilename.append(filename);
}

bool ADTFile::init(uint32 map_num, uint32 tileX, uint32 tileY)
{
    if(ADT.isEof ())
        return false;

    uint32 size;

    string xMap;
    string yMap;

    Adtfilename.erase(Adtfilename.find(".adt"),4);
    string TempMapNumber;
    TempMapNumber = Adtfilename.substr(Adtfilename.length()-6,6);
    xMap = TempMapNumber.substr(TempMapNumber.find("_")+1,(TempMapNumber.find_last_of("_")-1) - (TempMapNumber.find("_")));
    yMap = TempMapNumber.substr(TempMapNumber.find_last_of("_")+1,(TempMapNumber.length()) - (TempMapNumber.find_last_of("_")));
    Adtfilename.erase((Adtfilename.length()-xMap.length()-yMap.length()-2), (xMap.length()+yMap.length()+2));
    //string AdtMapNumber = xMap + ' ' + yMap + ' ' + GetPlainName((char*)Adtfilename.c_str());
    //printf("Processing map %s...\n", AdtMapNumber.c_str());
    //printf("MapNumber = %s\n", TempMapNumber.c_str());
    //printf("xMap = %s\n", xMap.c_str());
    //printf("yMap = %s\n", yMap.c_str());

    std::string dirname = std::string(szWorkDirWmo) + "/dir_bin";
    FILE *dirfile;
    dirfile = fopen(dirname.c_str(), "ab");
    if(!dirfile)
    {
        printf("Can't open dirfile!'%s'\n", dirname.c_str());
        return false;
    }

    while (!ADT.isEof())
    {
        char fourcc[5];
        ADT.read(&fourcc,4);
        ADT.read(&size, 4);
        flipcc(fourcc);
        fourcc[4] = 0;

        size_t nextpos = ADT.getPos() + size;

        if (!strcmp(fourcc,"MCIN"))
        {
        }
        else if (!strcmp(fourcc,"MTEX"))
        {
        }
        else if (!strcmp(fourcc,"MMDX"))
        {
            if (size)
            {
                char *buf = new char[size];
                ADT.read(buf, size);
                char *p=buf;
                int t=0;
                ModelInstansName = new string[size];
                while (p<buf+size)
                {
                    fixnamen(p,strlen(p));
                    char* s = GetPlainName(p);
                    fixname2(s,strlen(s));

                    ModelInstansName[t++] = s;

                    string path(p);
                    ExtractSingleModel(path);

                    p = p+strlen(p)+1;
                }
                delete[] buf;
            }
        }
        else if (!strcmp(fourcc,"MWMO"))
        {
            if (size)
            {
                char* buf = new char[size];
                ADT.read(buf, size);
                char* p=buf;
                int q = 0;
                WmoInstansName = new string[size];
                while (p<buf+size)
                {
                    char* s = GetPlainName(p);
                    fixnamen(s, strlen(s));
                    fixname2(s, strlen(s));
                    p += strlen(p) + 1;
                    WmoInstansName[q++] = s;
                }
                delete[] buf;
            }
        }
        //======================
        else if (!strcmp(fourcc,"MDDF"))
        {
            if (size)
            {
                nMDX = (int)size / 36;
                for (int i=0; i<nMDX; ++i)
                {
                    uint32 id;
                    ADT.read(&id, 4);
                    ModelInstance inst(ADT,ModelInstansName[id].c_str(), map_num, tileX, tileY, dirfile);
                }
                delete[] ModelInstansName;
            }
        }
        else if (!strcmp(fourcc,"MODF"))
        {
            if (size)
            {
                nWMO = (int)size / 64;
                for (int i=0; i<nWMO; ++i)
                {
                    uint32 id;
                    ADT.read(&id, 4);
                    WMOInstance inst(ADT,WmoInstansName[id].c_str(), map_num, tileX, tileY, dirfile);
                }
                delete[] WmoInstansName;
            }
        }
        //======================
        ADT.seek(nextpos);
    }
    ADT.close();
    fclose(dirfile);
    return true;
}

ADTFile::~ADTFile()
{
    ADT.close();
}