/*
 * Copyright (C) 2008-2011 TrinityCore <http://www.trinitycore.org/>
 * Copyright (C) 2005-2010 MaNGOS <http://getmangos.com/>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include <sys/types.h>
#include "VMapFactory.h"
#include "VMapManager2.h"
#include "G3D/Table.h"

using namespace G3D;

namespace VMAP
{
    void chompAndTrim(std::string& str)
    {
        while (str.length() >0)
        {
            char lc = str[str.length()-1];
            if (lc == '\r' || lc == '\n' || lc == ' ' || lc == '"' || lc == '\'')
            {
                str = str.substr(0, str.length()-1);
            }
            else
            {
                break;
            }
        }
        while (str.length() >0)
        {
            char lc = str[0];
            if (lc == ' ' || lc == '"' || lc == '\'')
            {
                str = str.substr(1, str.length()-1);
            }
            else
            {
                break;
            }
        }
    }

    IVMapManager* gVMapManager = 0;
    Table<unsigned int, bool>* iIgnoreSpellIds=0;

    //===============================================
    // result false, if no more id are found

    bool getNextId(const std::string& pString, unsigned int& pStartPos, unsigned int& pId)
    {
        bool result = false;
        unsigned int i;
        for (i=pStartPos;i<pString.size(); ++i)
        {
            if (pString[i] == ',')
            {
                break;
            }
        }
        if (i>pStartPos)
        {
            std::string idString = pString.substr(pStartPos, i-pStartPos);
            pStartPos = i+1;
            chompAndTrim(idString);
            pId = atoi(idString.c_str());
            result = true;
        }
        return(result);
    }

    //===============================================
    /**
    parameter: String of map ids. Delimiter = ","
    */

    void VMapFactory::preventSpellsFromBeingTestedForLoS(const char* pSpellIdString)
    {
        if (!iIgnoreSpellIds)
            iIgnoreSpellIds = new Table<unsigned int, bool>();
        if (pSpellIdString != NULL)
        {
            unsigned int pos =0;
            unsigned int id;
            std::string confString(pSpellIdString);
            chompAndTrim(confString);
            while (getNextId(confString, pos, id))
            {
                iIgnoreSpellIds->set(id, true);
            }
        }
    }

    //===============================================

    bool VMapFactory::checkSpellForLoS(unsigned int pSpellId)
    {
        return(!iIgnoreSpellIds->containsKey(pSpellId));
    }

    //===============================================
    // just return the instance
    IVMapManager* VMapFactory::createOrGetVMapManager()
    {
        if (gVMapManager == 0)
            gVMapManager= new VMapManager2();                // should be taken from config ... Please change if you like :-)
        return gVMapManager;
    }

    //===============================================
    // delete all internal data structures
    void VMapFactory::clear()
    {
        delete iIgnoreSpellIds;
        iIgnoreSpellIds = NULL;

        delete gVMapManager;
        gVMapManager = NULL;
    }
}