/****************************************************************************
Copyright (c) 2010 cocos2d-x.org

http://www.cocos2d-x.org

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 <string>
#include <stack>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxml/xmlmemory.h>
#include <TG3.h>
#include "NSString.h"
#include "CCXFileUtils_uphone.h"
#include "Cocos2dDefine.h"

namespace cocos2d {

void plist_startElement(void *ctx, const xmlChar *name, const xmlChar **atts);
void plist_endElement(void *ctx, const xmlChar *name);
void plist_characters(void *ctx, const xmlChar *ch, int len);

typedef enum 
{
	SAX_NONE = 0,
	SAX_KEY,
	SAX_DICT,
	SAX_INT,
	SAX_REAL,
	SAX_STRING
}CCSAXState;

typedef map<std::string, int> ResourceMap;
static ResourceMap      s_ResMap;
static ResourceHandle   s_HRes;

class CCDictMaker
{
public:
	NSDictionary<std::string, NSObject*> *m_pRootDict;
	NSDictionary<std::string, NSObject*> *m_pCurDict;
	std::stack<NSDictionary<std::string, NSObject*>*> m_tDictStack;
	std::string m_sCurKey;///< parsed key
	CCSAXState m_tState;
public:
	CCDictMaker()
	{
		m_pRootDict = NULL;
		m_pCurDict = NULL;
		m_tState = SAX_NONE;
	}
	~CCDictMaker()
	{
	}
	NSDictionary<std::string, NSObject*> *dictionaryWithContentsOfFile(const char *pFileName)
	{
		FILE *fp = NULL;
		if( !(fp = fopen(pFileName, "r")) )
		{
			return NULL;
		}
		fseek(fp,0,SEEK_END);
		int size = ftell(fp);
		fseek(fp,0,SEEK_SET);
		char *buffer = new char[size+1];
		fread(buffer,sizeof(char),size,fp);
		fclose(fp);
		/*
		* this initialize the library and check potential ABI mismatches
		* between the version it was compiled for and the actual shared
		* library used.
		*/
		LIBXML_TEST_VERSION
		xmlSAXHandler saxHandler;
		memset( &saxHandler, 0, sizeof(saxHandler) );
		// Using xmlSAXVersion( &saxHandler, 2 ) generate crash as it sets plenty of other pointers...
		saxHandler.initialized = XML_SAX2_MAGIC;  // so we do this to force parsing as SAX2.
 		saxHandler.startElement = &plist_startElement;
 		saxHandler.endElement = &plist_endElement;
 		saxHandler.characters = &plist_characters;

		int result = xmlSAXUserParseMemory( &saxHandler, this, buffer, size );
		if ( result != 0 )
		{
			return NULL;
		}
		/*
		* Cleanup function for the XML library.
		*/
		xmlCleanupParser();
		/*
		* this is to debug memory for regression tests
		*/
		xmlMemoryDump();
		delete []buffer;
		return m_pRootDict;
	}
};
void plist_startElement(void *ctx, const xmlChar *name, const xmlChar **atts)
{
	CCDictMaker *pMaker = (CCDictMaker*)(ctx);
	std::string sName((char*)name);
	if( sName == "dict" )
	{
		NSDictionary<std::string, NSObject*> *pNewDict = new NSDictionary<std::string, NSObject*>();
		if(! pMaker->m_pRootDict)
		{
			pMaker->m_pRootDict = pNewDict;
			pNewDict->autorelease();
		}
		else
		{
			NSAssert(pMaker->m_pCurDict && !pMaker->m_sCurKey.empty(), "");
			pMaker->m_pCurDict->setObject(pNewDict, pMaker->m_sCurKey);
			pNewDict->release();
			pMaker->m_sCurKey.clear();
		}
		pMaker->m_pCurDict = pNewDict;
		pMaker->m_tDictStack.push(pMaker->m_pCurDict);
		pMaker->m_tState = SAX_DICT;
	}
	else if(sName == "key")
	{
		pMaker->m_tState = SAX_KEY;
	}
	else if(sName == "integer")
	{
		pMaker->m_tState = SAX_INT;
	}
	else if(sName == "real")
	{
		pMaker->m_tState = SAX_REAL;
	}
	else if(sName == "string")
	{
		pMaker->m_tState = SAX_STRING;
	}
	else
	{
		pMaker->m_tState = SAX_NONE;
	}
}
void plist_endElement(void *ctx, const xmlChar *name)
{
	CCDictMaker * pMaker = (CCDictMaker*)(ctx);
	std::string sName((char*)name);
	if( sName == "dict" )
	{
		pMaker->m_tDictStack.pop();
		if ( !pMaker->m_tDictStack.empty() )
		{
			pMaker->m_pCurDict = (NSDictionary<std::string, NSObject*>*)(pMaker->m_tDictStack.top());
		}
	}
	pMaker->m_tState = SAX_NONE;
}
void plist_characters(void *ctx, const xmlChar *ch, int len)
{
 	CCDictMaker * pMaker = (CCDictMaker*)(ctx);
	if (pMaker->m_tState == SAX_NONE)
	{
		return;
	}
 	NSString *pText = new NSString();
	pText->m_sString = std::string((char*)ch,0,len);

 	switch(pMaker->m_tState)
 	{
 	case SAX_KEY:
 		pMaker->m_sCurKey = pText->m_sString;
 		break;
 	case SAX_INT:
 	case SAX_REAL:
 	case SAX_STRING:
 		{
 			NSAssert(!pMaker->m_sCurKey.empty(), "not found key : <integet/real>");
 			pMaker->m_pCurDict->setObject(pText, pMaker->m_sCurKey);
 			break;
 		}
 	}
	pText->release();
}

// record the resource path
static char s_pszResourcePath[MAX_PATH] = {0};

void CCFileUtils::setResourcePath(const char *pszResourcePath)
{
    NSAssert(pszResourcePath != NULL, "[FileUtils setResourcePath] -- wrong resource path");
    NSAssert(strlen(pszResourcePath) <= MAX_PATH, "[FileUtils setResourcePath] -- resource path too long");

    strcpy(s_pszResourcePath, pszResourcePath);
}

const char* CCFileUtils::fullPathFromRelativePath(const char *pszRelativePath)
{
    // get the user data path and append relativepath to it
    if (strlen(s_pszResourcePath) == 0)
    {
        const TUChar *pszTmp = EOS_GetSpecialPath(EOS_FILE_SPECIAL_PATH_USER_DATA);
        TUString::StrUnicodeToStrUtf8((Char*) s_pszResourcePath, pszTmp);
    }

#ifndef _TRANZDA_VM_
    char *pszDriver = "";
#else
    char *pszDriver = "D:/Work7";
#endif

    NSString * pRet = new NSString();
    pRet->autorelease();
    if ((strlen(pszRelativePath) > 1 && pszRelativePath[1] == ':'))
    {
        pRet->m_sString = pszRelativePath;
    }
    else if (strlen(pszRelativePath) > 0 && pszRelativePath[0] == '/')
    {
        pRet->m_sString = pszDriver;
        pRet->m_sString += pszRelativePath;
    }
    else
    {
        pRet->m_sString = pszDriver;
        pRet->m_sString += s_pszResourcePath;
        pRet->m_sString += pszRelativePath;
    }
    return CCFileUtils::getDiffResolutionPath(pRet->m_sString.c_str());
}
const char *CCFileUtils::fullPathFromRelativeFile(const char *pszFilename, const char *pszRelativeFile)
{
	std::string relativeFile = fullPathFromRelativePath(pszRelativeFile);
	NSString *pRet = new NSString();
	pRet->autorelease();
	pRet->m_sString = relativeFile.substr(0, relativeFile.rfind('/')+1);
	pRet->m_sString += pszFilename;
	return CCFileUtils::getDiffResolutionPath(pRet->m_sString.c_str());
}
NSDictionary<std::string, NSObject*> *CCFileUtils::dictionaryWithContentsOfFile(const char *pFileName)
{
	CCDictMaker tMaker;
	return tMaker.dictionaryWithContentsOfFile(pFileName);
}

const char* CCFileUtils::getDiffResolutionPath(const char *pszPath)
{
    NSString *pRet = new NSString(pszPath);
    pRet->autorelease();

    do 
    {
        TApplication* pApp = TApplication::GetCurrentApplication();
        CCX_BREAK_IF(!pApp);

        // get the Resolution
        int nScreenWidth  = pApp->GetScreenWidth();
        int nScreenHeight = pApp->GetScreenHeight();

        // it's default resolution, do nothing
        CCX_BREAK_IF(nScreenWidth == 320 && nScreenHeight == 480);

        if (nScreenWidth == 480 && nScreenHeight == 800)
        {
            // it's WVGA
            CCX_BREAK_IF(pRet->m_sString.find("@WVGA") != -1);

            std::string filePathWithoutExtension = pszPath;
            std::string extension = "";
            std::string filePath = pszPath;
            int nExPos = filePath.find_last_of(".");

            if (nExPos != -1)
            {
                filePathWithoutExtension = filePath.substr(0, nExPos);
                extension = filePath.substr(nExPos);
            }

            // new path, add "@WVGA" before the extension
            pRet->m_sString = filePathWithoutExtension + "@WVGA" + extension;

            // not find the resource of new path,use the original path
            if (! CCFileUtils::isResourceExist(pRet->m_sString.c_str()))
            {
                pRet->m_sString = filePath;
            }
        }
        else
        {
            // not support resolution
            NSAssert(0, "it's not supportted resolution.");
        }
    } while (0);

    return pRet->m_sString.c_str();
}

void CCFileUtils::setResourceEntry(const AppResourceEntry* pResEntry)
{
    if (pResEntry)
    {
        s_HRes.setResourceEntry(pResEntry);
    }
}

void CCFileUtils::setResourceInfo(const T_ResourceInfo ResInfo[], int nCount)
{
    // first, clear the map before
    if (!s_ResMap.empty())
    {
        s_ResMap.clear();
    }

    // second, insert the pairs
    for (int i = 0; i < nCount; ++i)
    {
        /**
        @brief Here we call fullPathFromRelativePath because when the UIImage find the ResName in s_ResMap,
               the UIImage only have the ResName with fullpath.So we must save the ResName with fullpath.
        */
        std::string key  = CCFileUtils::fullPathFromRelativePath((ResInfo[i]).ResName);
        int nResID       = (ResInfo[i]).nResID;

        s_ResMap.insert(ResourceMap::value_type(key, nResID));
    }
}

bool CCFileUtils::isResourceExist(const char* pszResName)
{
    bool nRet = false;

    TUChar FilePath[MAX_PATH] = {0};
    TUString::StrGBToUnicode(FilePath, (const Char *) pszResName);

    if (EOS_IsFileExist(FilePath))
    {
        // find in the hardware
        nRet = true;
    }
    else
    {
        // find in the resource map
        ResourceMap::iterator iter;
        iter = s_ResMap.find(pszResName);

        if (iter != s_ResMap.end())
        {
            nRet = true;
        }
    }

    return nRet;
}

const TBitmap* CCFileUtils::getBitmapByResName(const char* pszBmpName)
{
    const TBitmap* pBmp = NULL;

    do 
    {
        ResourceMap::iterator iter;
        iter = s_ResMap.find(pszBmpName);
        CCX_BREAK_IF(iter == s_ResMap.end());

        pBmp = s_HRes.LoadConstBitmap(iter->second);
    } while (0);

    return pBmp;
}

//////////////////////////////////////////////////
//
// ResourceHandle
//
//////////////////////////////////////////////////
ResourceHandle::ResourceHandle()
:m_pResLib(NULL)
{
}

ResourceHandle::~ResourceHandle()
{
    release();
}

void ResourceHandle::release()
{
    if (m_pResLib)
    {
        delete m_pResLib;
        m_pResLib = NULL;
    }
}

void ResourceHandle::setResourceEntry(const AppResourceEntry* pResEntry)
{
    release();

    m_pResLib = new TResourceLib(pResEntry);
}

const TBitmap* ResourceHandle::LoadConstBitmap(int nResID)
{
    const TBitmap* pResult = NULL;

    if (m_pResLib)
    {
        pResult = m_pResLib->LoadConstBitmap(nResID);
    }

    return pResult;
}
}//namespace   cocos2d