/*==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/>.

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 "max.h"
#include "iparamb2.h"

#include <algorithm>

#include "plComponent.h"
#include "plComponentMgr.h"
#include "plComponentReg.h"

/////////
class ComponentMgrClassDesc : public ClassDesc
{
public:
    int             IsPublic()              { return FALSE; }
    void*           Create(BOOL loading)    { return &plComponentMgr::Inst(); }
    const TCHAR*    ClassName()             { return _T("Component Mgr"); }
    SClass_ID       SuperClassID()          { return UTILITY_CLASS_ID; }
    Class_ID        ClassID()               { return COMPONENT_MGR_CID; }
    const TCHAR*    Category()              { return _T(""); }
};

static ComponentMgrClassDesc theComponentMgrCD;
ClassDesc* GetComponentMgrDesc() { return &theComponentMgrCD; }

/////////////

plComponentMgr &plComponentMgr::Inst()
{
    static plComponentMgr theInstance;
    return theInstance;
}

UInt32 plComponentMgr::Count()
{
    return fDescs.size();
}

ClassDesc *plComponentMgr::Get(UInt32 i)
{
    if (i < fDescs.size())
        return fDescs[i];
    else
    {
        hsAssert(0, "Component index out of range");
        return nil;
    }
}

UInt32 plComponentMgr::FindClassID(Class_ID id)
{
    for (unsigned int i = 0; i < fDescs.size(); i++)
    {
        if (fDescs[i]->ClassID() == id)
            return i;
    }

    return -1;
}

int IDescCompare(ClassDesc *desc1, ClassDesc *desc2);

void plComponentMgr::Register(ClassDesc *desc)
{
    // No descs? Go ahead and push it to the back...
    if (fDescs.size() == 0)
    {
        fDescs.push_back(desc);
        return;
    }

    // Organize desc's by category and name
    std::vector<ClassDesc*>::iterator it;
    for (it = fDescs.begin(); it != fDescs.end(); it++) 
    {
        if (IDescCompare(desc, (*it)) < 0)
        {
            fDescs.insert(it, desc);
            return;
        }
    }
}

int IDescCompare(ClassDesc *desc1, ClassDesc *desc2)
{
    const char *cat1 = desc1->Category() ? desc1->Category() : "";
    const char *cat2 = desc2->Category() ? desc2->Category() : "";
    int cmp = strcmp(cat1, cat2);
    
    // Only compare name if categories are the same
    if (cmp == 0)
    {
        const char *name1 = desc1->ClassName() ? desc1->ClassName() : "";
        const char *name2 = desc2->ClassName() ? desc2->ClassName() : "";

        return strcmp(name1, name2);
    }

    return cmp;
}