/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

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 3 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/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
licensors of this Program grant you additional
permission to convey the resulting work. Corresponding Source for a
non-source form of such a combination shall include the source code for
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
work.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/

#include "HeadSpin.h"
#include "hsExceptionStack.h"
#include "hsHashTable.h"
#include "hsStringTokenizer.h"
#include "hsResMgr.h"
#include <cmath>

#include <max.h>
#include <stdmat.h>
#if MAX_VERSION_MAJOR >= 13
#   include <INamedSelectionSetManager.h>
#endif
#pragma hdrstop

#include "hsConverterUtils.h"
#include "MaxMain/MaxCompat.h"

#include "hsMaxLayerBase.h"
#include "plInterp/plController.h"

#include "MaxExport/plErrorMsg.h"
#include "UserPropMgr.h"
#include "plGImage/hsCodecManager.h"
#include "pnKeyedObject/plKey.h"
#include "pnKeyedObject/hsKeyedObject.h"

#include "MaxMain/MaxCompat.h"

const char hsConverterUtils::fTagSeps[] = " ,\t\n=:;";

extern UserPropMgr gUserPropMgr;

namespace {
    class ObjectInstancedEnumProc : public DependentEnumProc
    {
    public:
        ObjectInstancedEnumProc() : fInstanceCount(0) { }
        
        int proc(ReferenceMaker *rmaker)
        {
            hsGuardBegin("ObjectInstancedEnumProc::proc");

            if (rmaker->SuperClassID()==BASENODE_CLASS_ID)
            {
                fInstanceCount++;
            }
            
            return 0;
            hsGuardEnd;
        }
        
        int32_t   GetInstanceCount()  { return fInstanceCount; }
        
    private:
        int32_t   fInstanceCount;
    };
}

hsConverterUtils& hsConverterUtils::Instance()
{
    static hsConverterUtils the_instance;

    return the_instance;
}

hsConverterUtils::hsConverterUtils() :
fInterface(GetCOREInterface()),
fErrorMsg(nil),
fSuppressMangling(false),
fWarned(0)
{
}

void hsConverterUtils::Init(bool save, plErrorMsg *msg)
{
    hsGuardBegin("hsConverterUtils::Init");

    fErrorMsg = msg;
    
    fSuppressMangling = false;
    fWarned = 0;
    fSave = save;
    
    hsGuardEnd;
}

TimeValue hsConverterUtils::GetTime(Interface *gi)
{
    hsGuardBegin("hsConverterUtils::GetTime");

    return ((TimeValue)0);
    hsGuardEnd; 
    //  return gi->GetTime();
    //  return theSceneEnum->time;
}

bool hsConverterUtils::IsEnvironHolder(INode *node)
{
    hsGuardBegin("hsConverterUtils::IsEnvironHolder");

    return (gUserPropMgr.UserPropExists(node, "EnvironMap"));
    hsGuardEnd; 
}

bool hsConverterUtils::AutoStartDynamics(INode *node)
{
    hsGuardBegin("hsConverterUtils::AutoStartDynamics");

    return (gUserPropMgr.UserPropExists(node,"AutoStart") || gUserPropMgr.UserPropExists(node,"aud"));
    hsGuardEnd; 
}

bool hsConverterUtils::RandomStartDynamics(INode *node)
{
    hsGuardBegin("hsConverterUtils::RandomStartDynamics");

    return (gUserPropMgr.UserPropExists(node,"RandomStart"));
    hsGuardEnd; 
}

void hsConverterUtils::StripOffTail(char* path)
{
    hsGuardBegin("hsConverterUtils::StripOffTail");

    int i = strlen(path)-1;
    while(path[i] != '\\')
        i--;
    path[i+1] = 0;

    hsGuardEnd;
}

void hsConverterUtils::StripOffPath(char* fileName)
{
    hsGuardBegin("hsConverterUtils::StripOffPath");

    char tmp[256];
    // Remove preceding path
    int i = strlen(fileName)-1;
    while(fileName[i] != '\\')
        i--;
    strcpy(tmp, fileName+i+1);
    strcpy(fileName, tmp);

    hsGuardEnd;
}

//
// static 
//
bool hsConverterUtils::IsReservedKeyword(const char* nodeName)
{
    hsGuardBegin("hsConverterUtils::IsReservedKeyword");

    return (nodeName!=nil &&
        (  !_stricmp(nodeName, "theplayer")
        || !_stricmp(nodeName, "the_player")
        || !_stricmp(nodeName, "thecamera")
        || !_stricmp(nodeName, "the_camera")
        || !_stricmp(nodeName, "thedetector")
        || !_stricmp(nodeName, "the_detector")
        || !_stricmp(nodeName, "themonitor")
        || !_stricmp(nodeName, "the_monitor")
        || !_stricmp(nodeName, "thedetectorshape")
        || !_stricmp(nodeName, "the_detector_shape")) );

    hsGuardEnd; 
}

char *hsConverterUtils::MangleReference(char *mangName, const char *nodeName, const char* defRoom)
{
    hsGuardBegin("hsConverterUtils::MangleReference");

    //hsAssert(nodeName, "No node name in hsConverterUtils::MangleReference.");
    if(!nodeName)
    {
        fErrorMsg->Set(true, "Mangle Reference Error", "No node name in hsConverterUtils::MangleReference.").Show();
        fErrorMsg->Set();
        return mangName;        
    }
    if (!*nodeName)
     return hsStrcpy(mangName, nodeName);

    // doesn't want to be mangled
    if (('.' == nodeName[0])&&('.' == nodeName[1]))
        return hsStrcpy(mangName, nodeName + 2);

    // already mangled or reserved
    if (strstr(nodeName, "..") || IsReservedKeyword(nodeName))
        return hsStrcpy(mangName, nodeName);

    INode *node = GetINodeByName(nodeName);

    if (!node)
    {
        // no room so make global
        // Default is to make it global, but you can set another default (like same
        // room as referencer) with defRoom.

        plString tempName = plFormat("{}..{}", defRoom, nodeName);
        return hsStrcpy(mangName, tempName.c_str());
    }

    return MangleReference(mangName, node);
    hsGuardEnd; 
}

char *hsConverterUtils::MangleReference(char *mangName, INode *node, const char* defRoom)
{
    hsGuardBegin("hsConverterUtils::MangleReference");

    if (!node)
        return nil;

    plString tempName;
    char *nodeName = node->GetName();
    char *roomName = nil;
    TSTR sdata;
    hsStringTokenizer toker;
    if (gUserPropMgr.GetUserPropString(node, "Rooms", sdata)) 
    {
        toker.Reset(sdata, fTagSeps);
        roomName = toker.next();
    }

    if (fSuppressMangling)
    {
        return hsStrcpy(mangName, nodeName);
    }

    if (('.' == nodeName[0])&&('.' == nodeName[1]))
        tempName = (nodeName + 2);
    else if (!*nodeName 
            || strstr(nodeName, "..")
            || IsReservedKeyword(nodeName)
    )
        tempName = nodeName;
    else if (roomName && *roomName)
        tempName = plFormat("{}..{}", roomName, nodeName);
    else
        tempName = plFormat("{}..{}", defRoom, nodeName);

    return hsStrcpy(mangName, tempName.c_str());

    hsGuardEnd; 
}

char *hsConverterUtils::MangleRefWithRoom(char *mangName, const char *nodeName, const char* roomName)
{
    hsGuardBegin("hsConverterUtils::MangleRefWithRoom");

    //hsAssert(nodeName && roomName, "No node or room name in hsConverterUtils::MangleRefWithRoom.");
    if(!(nodeName && roomName))
    {
        fErrorMsg->Set(true, "Mangle Room Reference Error", "No node or room name in hsConverterUtils::MangleRefWithRoom.").Show();
        fErrorMsg->Set();
        return mangName;        
    }

    if (!*nodeName)
        return hsStrcpy(mangName,nodeName);

    // doesn't want to be mangled
    if (('.' == nodeName[0])&&('.' == nodeName[1]))
        return hsStrcpy(mangName, nodeName + 2);

    // already mangled or reserved
    if (strstr(nodeName, "..") || IsReservedKeyword(nodeName))
        return hsStrcpy(mangName, nodeName);

    sprintf(mangName, "%s..%s", roomName, nodeName);
    return mangName;

    hsGuardEnd; 
}


INode* hsConverterUtils::FindINodeFromMangledName(const char* mangName)
{
    hsGuardBegin("hsConverterUtils::FindINodeFromMangledName");

    if( !(mangName && *mangName) )
        return nil;

    const char* nodeName = mangName;

    char* p;
    while( p = strstr((char*)nodeName, "..") )
    {
        nodeName = p + 2;
    }
    if( !(nodeName && *nodeName) )
        nodeName = mangName;

    return GetINodeByName(nodeName);
    hsGuardEnd; 
}

INode* hsConverterUtils::FindINodeFromKeyedObject(hsKeyedObject* obj)
{
    hsGuardBegin("hsConverterUtils::FindINodeFromKeyedObject");

    INode* retVal = FindINodeFromMangledName(obj->GetKeyName().c_str());
    if( retVal )
        return (retVal);

/*  No more other Keys plasma 2.0
    int i;
    for( i = 0; i < obj->GetNumOtherKeys(); i++ )
    {
        retVal = FindINodeFromMangledName(obj->GetOtherKey(i)->GetName());
        if( retVal )
            return retVal;
    }
*/
    return nil;
    hsGuardEnd; 
}

// Uses MangleRef so all mangling happens in one place.  Compares the name with a mangled version of it
bool hsConverterUtils::IsMangled(const char *name) 
{
    hsGuardBegin("hsConverterUtils::IsMangled");

    char mang[255];
    return !strcmp(name,MangleReference(mang,name));
    hsGuardEnd; 
}

// Undoes the process of mangling.  This includes taking a "name" back to "..name"
char *hsConverterUtils::UnMangleReference(char *dest, const char *name) 
{
    hsGuardBegin("hsConverterUtils::IsMangled");

    char *u = strstr((char*)name,"..");
    if (u) 
    {
        u+=2;
        strcpy(dest,u);
    } 
    else if (!IsMangled(name)) 
    {
        strcpy(dest,"..");
        strcat(dest,name);
    } 
    else 
    {
        strcpy(dest,name);
    }

    return dest;
    hsGuardEnd; 
}

// Similar to UnMangle but doesn't take "name" back to "..name"
char* hsConverterUtils::StripMangledReference(char* dest, const char* name)
{
    hsGuardBegin("hsConverterUtils::StripMangledReference");

    char *u = strstr((char*)name,"..");
    if (u) 
    {
        u+=2;
        strcpy(dest,u);
    }
    else
    {
        strcpy(dest,name);
    }

    return dest;
    hsGuardEnd; 
}

int32_t hsConverterUtils::FindNamedSelSetFromName(const char *name)
{
    hsGuardBegin("hsConverterUtils::FindNamedSelSetFromName");

    #if MAX_VERSION_MAJOR <= 12
    for (int32_t i=0; i<fInterface->GetNumNamedSelSets(); i++)
    {
        if (!_stricmp(name, fInterface->GetNamedSelSetName(i)))
            return (i);
    }
    #else
    INamedSelectionSetManager* selSetMgr = INamedSelectionSetManager::GetInstance();
    for (int32_t i=0; i<selSetMgr->GetNumNamedSelSets(); i++)
    {
        if (!_stricmp(name, selSetMgr->GetNamedSelSetName(i)))
            return (i);
    }
    #endif

    return (-1);
    hsGuardEnd; 
}

bool hsConverterUtils::IsInstanced(Object* maxObject)
{
    hsGuardBegin("hsConverterUtils::IsInstanced");

    if (!maxObject)
    {
        return false;
    }

    ObjectInstancedEnumProc instProc;
    ENUMDEPENDENTS(maxObject, &instProc);

    return (instProc.GetInstanceCount() > 1);
    hsGuardEnd; 
}


INode* hsConverterUtils::IGetINodeByNameRecur(INode* node, const char* wantName)
{
    hsGuardBegin("hsConverterUtils::IGetINodeByNameRecur");

    if (!node || !node->GetName())
        return nil;

    char* nodeName=node->GetName();
    if (!_stricmp(nodeName, wantName))
        return node;

    // Process children
    int num = node->NumberOfChildren();
    int i;
    for(i=0; i<num; i++)
    {
        INode* ret;
        if ((ret=IGetINodeByNameRecur(node->GetChildNode(i), wantName)))
            return ret;
    }
    
    return nil;
    hsGuardEnd; 
}

//
// Matches name against node's name, case-insensitive, 
//
INode* hsConverterUtils::GetINodeByName(const char* name, bool caseSensitive)
{
    hsGuardBegin("hsConverterUtils::GetINodeByName");

    if (!name)
    {
        return nil;
    }

    if (fNodeSearchCache)
    {
        CacheNode cNode(name);
        cNode.SetCaseSensitive(caseSensitive);
        hsHashTableIterator<CacheNode> it = fNodeSearchCache->find(cNode);
        return it->GetNode();
    }

    //hsAssert(fInterface, "nil fInterface in hsConverterUtils::GetINodeByName()");
    if(!fInterface)
    {
        fErrorMsg->Set(true, "Get INode by Name Error", "nil fInterface in hsConverterUtils::GetINodeByName()").Show();
        fErrorMsg->Set();
        return NULL;        
    }


    if (caseSensitive)
    {
        return fInterface->GetINodeByName(name);
    }

    return IGetINodeByNameRecur(fInterface->GetRootNode(), name);
    hsGuardEnd; 
}

void hsConverterUtils::CreateNodeSearchCache()
{
    if (!fNodeSearchCache)
    {
        fNodeSearchCache = new hsHashTable<CacheNode>();
    }
    fNodeSearchCache->clear();

    IBuildNodeSearchCacheRecur(fInterface->GetRootNode());
}

void hsConverterUtils::DestroyNodeSearchCache()
{
    delete fNodeSearchCache;
    fNodeSearchCache = nil;
}

void hsConverterUtils::IBuildNodeSearchCacheRecur(INode* node)
{
    if (!node || !node->GetName())
        return ;

    CacheNode cNode(node);
    fNodeSearchCache->insert(cNode);

    // Process children
    int num = node->NumberOfChildren();
    int i;
    for(i=0; i<num; i++)
    {
        IBuildNodeSearchCacheRecur(node->GetChildNode(i));
    }
}

uint32_t hsConverterUtils::CacheNode::GetHash() const
{
    const char* k = GetName();
    int len = k ? strlen(k) : 0;

    int h;
    for (h=len; len--;) 
    { 
        h = ((h<<5)^(h>>27))^tolower(*k++);
    }
    return h;
}

bool hsConverterUtils::CacheNode::operator==(const CacheNode& other) const
{
    const char* k1 = GetName();
    const char* k2 = other.GetName();
    if (other.fCaseSensitive || fCaseSensitive)
        return !strcmp(k1,k2);
    else
        return !_stricmp(k1,k2);
}