/****************************************************************************
Copyright (c) 2008, Radon Labs GmbH
Copyright (c) 2011-2013,WebJet Business Division,CYOU
 
http://www.genesis-3d.com.cn

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/

#include "stdneb.h"
#include "io/assignregistry.h"
#include "io/fswrapper.h"
#include "core/coreserver.h"

namespace IO
{
//__ImplementClass(IO::AssignRegistry, 'ASRG', Core::RefCounted);
__ImplementImageSingleton(IO::AssignRegistry);

using namespace Util;

//------------------------------------------------------------------------------
/**
*/
AssignRegistry::AssignRegistry() :
    isValid(false)
{
    __ConstructImageSingleton;
}

//------------------------------------------------------------------------------
/**
*/
AssignRegistry::~AssignRegistry()
{
    if (this->IsValid())
    {
        this->Discard();
    }
    __DestructImageSingleton;
}

//------------------------------------------------------------------------------
/**
*/
void
AssignRegistry::Setup()
{
    //this->critSect.Enter();

    n_assert(!this->IsValid());
    this->isValid = true;
    //this->SetupSystemAssigns();
    //this->SetupProjectAssigns();
    
    //this->critSect.Leave();

	String binLocation = FSWrapper::GetBinDirectory();
	if (binLocation.IsValid())
	{
	    this->SetAssign(Assign("bin", binLocation));
	}
}

//------------------------------------------------------------------------------
/**
*/
void
AssignRegistry::Discard()
{
    //this->critSect.Enter();
    
    n_assert(this->IsValid());
    this->assignTable.Clear();
    this->isValid = false;
    
    //this->critSect.Leave();
}

//------------------------------------------------------------------------------
/**
*/
bool
AssignRegistry::IsValid() const
{
    return this->isValid;
}

////------------------------------------------------------------------------------
///**
//*/
//void
//AssignRegistry::SetupSystemAssigns()
//{
//    //this->critSect.Enter();
//
//    n_assert(this->IsValid()); 
//    
//    String homeLocation = FSWrapper::GetHomeDirectory();
//    if (homeLocation.IsValid())
//    {
//        this->SetAssign(Assign("home", homeLocation));
//    }
//    #if !(__WII__ || __PS3__)
//    String binLocation = FSWrapper::GetBinDirectory();
//    if (binLocation.IsValid())
//    {
//        this->SetAssign(Assign("bin", binLocation));
//    }
//    String tempLocation = FSWrapper::GetTempDirectory();
//    if (tempLocation.IsValid())
//    { 
//        this->SetAssign(Assign("temp", tempLocation));
//    }
//    String userLocation = FSWrapper::GetUserDirectory();
//    if (userLocation.IsValid())
//    {
//        this->SetAssign(Assign("user", userLocation));
//    }
//	//#ifdef __GENESIS_EDITOR__
//	//String editorAssetLocation = FSWrapper::GetEditorAssetDirectory();
//	//if (editorAssetLocation.IsValid())
//	//{
//	//	this->SetAssign(Assign("editor", editorAssetLocation));
//	//}
//	//#endif // __GENESIS_EDITOR__
//    #endif
//    
//    #if __WIN32__
//    String appDataLocation = FSWrapper::GetAppDataDirectory();
//    if (appDataLocation.IsValid())
//    {
//        this->SetAssign(Assign("appdata", appDataLocation));
//    }
//    String programsLocation = FSWrapper::GetProgramsDirectory();
//    if (programsLocation.IsValid())
//    {
//        this->SetAssign(Assign("programs", programsLocation));
//    }
//    #endif
//
//    //this->critSect.Leave();
//}    
//
////------------------------------------------------------------------------------
///**
//*/
//void
//AssignRegistry::SetupProjectAssigns()
//{
//	// 根据项目。在外部设置
//	return;
//
// //   //this->critSect.Enter();
// //       
// //   n_assert(this->IsValid());
//
// //   String rootDir = Core::CoreServer::Instance()->GetRootDirectory().AsString();
// //   this->SetAssign(Assign("root", rootDir));
//
// //   #if __WIN32__
// //       this->SetAssign(Assign("export", "root:export_win32"));
// //   #elif __XBOX360__
// //       this->SetAssign(Assign("export", "root:export_xbox360"));
// //   #elif __WII__
// //       this->SetAssign(Assign("export", "root:export_wii"));
// //   #elif __PS3__
// //       this->SetAssign(Assign("export", "root:export_ps3"));
// //   #elif __OSX__
// //       this->SetAssign(Assign("export", "root:export_osx"));
// //   #else
// //   #error "PLATFORM FIXME: setup platform specific assigns!"
// //   #endif
//
//	////temp code
//	////SetAssign( IO::Assign("Net","http://10.7.82.13:8080") );
//	////SetAssign( IO::Assign("export", "Net:export_win32"));
//
// //   // setup content assigns
// //   this->SetAssign(Assign("msh", "export:meshes"));
// //   this->SetAssign(Assign("ani", "export:anims"));
// //   this->SetAssign(Assign("data", "export:data"));        
// //   this->SetAssign(Assign("video", "export:video"));
// //   this->SetAssign(Assign("seq", "export:sequences"));
// //   this->SetAssign(Assign("stream", "export:audio"));
// //   this->SetAssign(Assign("shd", "export:shaders"));
// //   this->SetAssign(Assign("tex", "export:textures"));
// //   this->SetAssign(Assign("frame", "export:frame"));
// //   this->SetAssign(Assign("mdl", "export:models"));
// //   this->SetAssign(Assign("audio", "export:audio"));
// //   this->SetAssign(Assign("sui", "export:sui"));       
// //   this->SetAssign(Assign("wiidata", "export:wiidata"));   
//
// //   // setup special system assigns (for placeholders, etc...)
// //   this->SetAssign(Assign("sysmsh", "export:meshes"));
// //   this->SetAssign(Assign("systex", "export:textures"));
// //   this->SetAssign(Assign("sysanim", "export:anims"));
//
// //   // Nebula2 backward compat assigns:
// //   this->SetAssign(Assign("meshes", "export:meshes"));
// //   this->SetAssign(Assign("anims", "export:anims"));
// //   this->SetAssign(Assign("textures", "export:textures"));
//
// //   //this->critSect.Leave();
//}

//------------------------------------------------------------------------------
/**
*/
void
AssignRegistry::SetAssign(const Assign& assign)
{
    //this->critSect.Enter();

    n_assert(this->IsValid());
    if (this->HasAssign(assign.GetName()))
    {
        this->ClearAssign(assign.GetName());
    }
    this->assignTable.Add(assign);
    
    //this->critSect.Leave();
}

//------------------------------------------------------------------------------
/**
*/
bool
AssignRegistry::HasAssign(const String& assignName) const
{
    //this->critSect.Enter();
    n_assert(assignName.IsValid());
    bool result = this->assignTable.Contains(assignName);
    //this->critSect.Leave();
    return result;
}

//------------------------------------------------------------------------------
/**
*/
String
AssignRegistry::GetAssign(const String& assignName) const
{
    //this->critSect.Enter();

    n_assert(assignName.IsValid());
    n_assert(this->HasAssign(assignName));
    String result = this->assignTable[assignName];
    
    //this->critSect.Leave();
    return result;
}

//------------------------------------------------------------------------------
/**
*/
void
AssignRegistry::ClearAssign(const String& assignName)
{
    //this->critSect.Enter();

    n_assert(assignName.IsValid());
    n_assert(this->HasAssign(assignName));
    this->assignTable.Erase(assignName);

    //this->critSect.Leave();
}

//------------------------------------------------------------------------------
/**
*/
Array<Assign>
AssignRegistry::GetAllAssigns() const
{
    //this->critSect.Enter();

    Array<KeyValuePair<String,String> > content = this->assignTable.Content();
    Array<Assign> assigns(content.Size(), 0);
    IndexT i;
    for (i = 0; i < content.Size(); i++)
    {
        assigns.Append(Assign(content[i].Key(), content[i].Value()));
    }

    //this->critSect.Leave();
    return assigns;
}

//------------------------------------------------------------------------------
/**
    Resolves all assigns from an URI returning an URI. It is allowed to
    "stack" assigns, which means, defining an assign as pointing to
    another assign.
*/
URI
AssignRegistry::ResolveAssigns(const URI& uri) const
{
    //this->critSect.Enter();
    URI resolvedUri = this->ResolveAssignsInString(uri.AsString());
    //this->critSect.Leave();
    return resolvedUri;
}

//------------------------------------------------------------------------------
/**
    Resolves all assigns from a URI. It is allowed to
    "stack" assigns, which means, defining an assign as pointing to
    another assign.s
*/
String
AssignRegistry::ResolveAssignsInString(const String& uriString) const
{
    //this->critSect.Enter();
    String result = uriString;

    // check for assigns
    int colonIndex;
    while ((colonIndex = result.FindCharIndex(':', 0)) > 0)
    {
        // special case: ignore one-caracter "assigns" because they are 
        // really DOS drive letters
        if (colonIndex > 1)
        {
            String assignString = result.ExtractRange(0, colonIndex);
            
            // ignore unknown assigns, because these may be part of an URI
            if (this->HasAssign(assignString))
            {
                String postAssignString = result.ExtractRange(colonIndex + 1, result.Length() - (colonIndex + 1));
                String replace = this->GetAssign(assignString);
                if (!replace.IsEmpty())
                {
                    if (replace[replace.Length()-1] != ':'
                        && (replace[replace.Length()-1] != '/'
                        || replace[replace.Length()-2] != ':'))
                    {
                        replace.Append("/");
                    }
                    replace.Append(postAssignString);
                }
                result = replace;
            }
            else break;
        }
        else break;
    }
    result.ConvertBackslashes();
    result.TrimRight("/");
    //this->critSect.Leave();

    return result;
}

} // namespace IO