// =================================================================================================
// Copyright 2006 Adobe Systems Incorporated
// All Rights Reserved.
//
// NOTICE:  Adobe permits you to use, modify, and distribute this file in accordance with the terms
// of the Adobe license agreement accompanying it.
// =================================================================================================

// actions.cpp|h
// performs one of the XMPFiles actions as indicated by the paramters (and evaluated in main)
//

const char * XMP_EXE_VERSION= "4.4";

#include <stdexcept>
#include <cstdarg>
#include <cstdio>
#include <vector>
#include <string>
#include <cstring>

//XMP related
#define TXMP_STRING_TYPE std::string
#define XMP_INCLUDE_XMPFILES 1
#include "public/include/XMP.hpp"			//NB: no XMP.incl_cpp here on purpose, gets compiled in main...
#include "public/include/XMP_Const.h"

#include "samples/source/common/globals.h"
#include "samples/source/common/Log.h"
#include "samples/source/xmpcommand/Actions.h" //must come after XMP.hpp/XMP_Const.h

// utility functions **************************************************************

	/* does NOT include path fixing (unix vs wxp) on purpose
	* being readable of course implies existing
	*  - note: this utility is also used by cppunit sanity checks
	*/
	bool fileIsReadable(const std::string filename)
	{
		FILE* fp = NULL;
		fp = fopen( filename.c_str(), "rb" );
		if( fp != NULL )
		{
			fclose( fp );
			return true;
		}
		return false;
	}

	bool fileIsWritable(const std::string filename)
	{
		FILE* fp = NULL;
		fp = fopen( filename.c_str(), "rb+" );
		if( fp != NULL )
		{
			fclose( fp );
			return true;
		}
		return false;
	}

	void verifyFileIsReadable(const std::string filename)
	{
		if (! fileIsReadable(filename))
			Log::error("file %s is not readable or not existing.",filename.c_str());

	}

	void verifyFileIsWritable(const std::string filename)
	{
		if (! fileIsWritable(filename))
			Log::error("file %s is not readwritable or not existing.",filename.c_str());
	}

	
	std::string getStringFromFile(const std::string& filename)
	{
		verifyFileIsReadable(filename);

		//figure out length
		FILE * file = fopen ( filename.c_str(), "rb" );
		fseek ( file, 0, SEEK_END );
		XMP_Uns32 length = ftell( file );
		fseek ( file, 0, SEEK_SET );
		
		//write into string
		std::string content;
		content.reserve ( (XMP_Uns32) length );
		content.append ( length, ' ' );
		fread ( (char*)content.data(), 1, length, file );
		fclose ( file );
		return content;
	}

	/* hand over the fileFormat and get a fileFormatName (2-3 Letters ie. PDF) 
	* and a Description (i.e. "Portable Document Format") back.
	* see also public/include/XMP_Const.h
	*/
	void fileFormatNameToString ( XMP_FileFormat fileFormat, std::string & fileFormatName, std::string & fileFormatDesc ) 
	{
		fileFormatName.erase();
		fileFormatDesc.erase();
		switch(fileFormat) {
		case kXMP_PDFFile:
			fileFormatName = "PDF ";fileFormatDesc = "Portable Document Format";break;
		case kXMP_PostScriptFile:
			fileFormatName = "PS  ";fileFormatDesc = "Post Script";break;
		case kXMP_EPSFile:
			fileFormatName = "EPS ";fileFormatDesc = "Encapsulated Post Script";break;
		case kXMP_JPEGFile:
			fileFormatName = "JPEG";fileFormatDesc = "Joint Photographic Experts Group";break;
		case kXMP_JPEG2KFile:
			fileFormatName = "JPX ";fileFormatDesc = "JPEG 2000";break;
		case kXMP_TIFFFile:
			fileFormatName = "TIFF";fileFormatDesc = "Tagged Image File Format";break;
		case kXMP_GIFFile:
			fileFormatName = "GIF ";fileFormatDesc = "Graphics Interchange Format";break;
		case kXMP_PNGFile:
			fileFormatName = "PNG ";fileFormatDesc = "Portable Network Graphic";break;
		case kXMP_MOVFile:
			fileFormatName = "MOV ";fileFormatDesc = "Quicktime";break;
		case kXMP_AVIFile:
			fileFormatName = "AVI ";fileFormatDesc = "Quicktime";break;
		case kXMP_CINFile:
			fileFormatName = "CIN ";fileFormatDesc = "Cineon";break;
		case kXMP_WAVFile:
			fileFormatName = "WAV ";fileFormatDesc = "WAVE Form Audio Format";break;
		case kXMP_MP3File:
			fileFormatName = "MP3 ";fileFormatDesc = "MPEG-1 Audio Layer 3";break;
		case kXMP_SESFile:
			fileFormatName = "SES ";fileFormatDesc = "Audition session";break;
		case kXMP_CELFile:
			fileFormatName = "CEL ";fileFormatDesc = "Audition loop";break;
		case kXMP_MPEGFile:
			fileFormatName = "MPEG";fileFormatDesc = "Motion Pictures Experts Group";break;
		case kXMP_MPEG2File:
			fileFormatName = "MP2 ";fileFormatDesc = "MPEG-2";break;
		case kXMP_WMAVFile:
			fileFormatName = "WMAV";fileFormatDesc = "Windows Media Audio and Video";break;
		case kXMP_HTMLFile:
			fileFormatName = "HTML";fileFormatDesc = "HyperText Markup Language";break;
		case kXMP_XMLFile:
			fileFormatName = "XML ";fileFormatDesc = "Extensible Markup Language";break;
		case kXMP_TextFile:
			fileFormatName = "TXT ";fileFormatDesc = "text";break;
		case kXMP_PhotoshopFile:
			fileFormatName = "PSD ";fileFormatDesc = "Photoshop Document";break;
		case kXMP_IllustratorFile:
			fileFormatName = "AI  ";fileFormatDesc = "Adobe Illustrator";break;
		case kXMP_InDesignFile:
			fileFormatName = "INDD";fileFormatDesc = "Adobe InDesign";break;
		case kXMP_AEProjectFile:
			fileFormatName = "AEP ";fileFormatDesc = "AfterEffects Project";break;
		case kXMP_AEFilterPresetFile:
			fileFormatName = "FFX ";fileFormatDesc = "AfterEffects Filter Preset";break;
		case kXMP_EncoreProjectFile:
			fileFormatName = "NCOR";fileFormatDesc = "Encore Project";break;
		case kXMP_PremiereProjectFile:
			fileFormatName = "PPRJ";fileFormatDesc = "Premier Project";break;
		case kXMP_SWFFile:
			fileFormatName = "SWF ";fileFormatDesc = "Shockwave Flash";break;
		case kXMP_PremiereTitleFile:
			fileFormatName = "PRTL";fileFormatDesc = "Premier Title";break;
		case kXMP_UnknownFile:
			fileFormatName = "    ";fileFormatDesc = "Unkown file format";break;
		default:
			fileFormatName = "    ";fileFormatDesc = "no known format constant";break;
		}
	} //fileFormatNameToString

	/**
	* GetFormatInfo-Flags  (aka Handler-Flags)
	* find this in XMP_Const.h under "Options for GetFormatInfo"
	*/
	std::string XMPFiles_FormatInfoToString ( const XMP_OptionBits options) {
		std::string outString;

		if( options & kXMPFiles_CanInjectXMP )
			outString.append(" CanInjectXMP");
		if( options & kXMPFiles_CanExpand )
			outString.append(" CanExpand");
		if( options & kXMPFiles_CanRewrite )
			outString.append(" CanRewrite");
		if( options & kXMPFiles_PrefersInPlace )
			outString.append(" PrefersInPlace");
		if( options & kXMPFiles_CanReconcile )
			outString.append(" CanReconcile");
		if( options & kXMPFiles_AllowsOnlyXMP )
			outString.append(" AllowsOnlyXMP");
		if( options & kXMPFiles_ReturnsRawPacket )
			outString.append(" ReturnsRawPacket");
		if( options & kXMPFiles_HandlerOwnsFile )
			outString.append(" HandlerOwnsFile");
		if( options & kXMPFiles_AllowsSafeUpdate )
			outString.append(" AllowsSafeUpdate");

		if (outString.empty()) outString=" (none)";
		return outString;
	}

	/**
	* openOptions to String, find this in 
	* XMP_Const.h under "Options for OpenFile"
	*/
	std::string XMPFiles_OpenOptionsToString ( const XMP_OptionBits options) {
		std::string outString;
		if( options & kXMPFiles_OpenForRead)
			outString.append(" OpenForRead");
		if( options & kXMPFiles_OpenForUpdate)
			outString.append(" OpenForUpdate");
		if( options & kXMPFiles_OpenOnlyXMP)
			outString.append(" OpenOnlyXMP");
		if( options & kXMPFiles_OpenStrictly)
			outString.append(" OpenStrictly");
		if( options & kXMPFiles_OpenUseSmartHandler)
			outString.append(" OpenUseSmartHandler");
		if( options & kXMPFiles_OpenUsePacketScanning)
			outString.append(" OpenUsePacketScanning");
		if( options & kXMPFiles_OpenLimitedScanning)
			outString.append(" OpenLimitedScanning");

		if (outString.empty()) outString=" (none)";
		return outString;
	}

	//just the callback-Function
	XMP_Status DumpToString( void * refCon, XMP_StringPtr outStr, XMP_StringLen outLen )
	{
		XMP_Status status	= 0; 
		std::string* dumpString = static_cast < std::string* > ( refCon );
		dumpString->append (outStr, outLen);
		return status;
	}

// ********************************************************************************

void Actions::version() {
	XMP_VersionInfo coreVersion, filesVersion;
	SXMPMeta::GetVersionInfo ( &coreVersion );
	SXMPFiles::GetVersionInfo ( &filesVersion );
	Log::info("%s", coreVersion.message);
	Log::info("%s", filesVersion.message);
	Log::info("Executable Version:%s", XMP_EXE_VERSION);

#if XMP_WinBuild
	Log::info("compiled on Windows on %s, %s",__DATE__,__TIME__);
#endif
#if XMP_MacBuild
	Log::info("compiled on Mac on %s, %s",__DATE__,__TIME__);
#endif
#if NDEBUG
	Log::info("Configuration: debug");
#else
	Log::info("Configuration: release");
#endif
	Log::info("Edition: Public SDK");
#if XMPQE_BIG_ENDIAN
	Log::info("Big endian machine");
#elif XMPQE_LITTLE_ENDIAN
	Log::info("Little endian machine");
#else
	Log::warn("unknown Endian !!!");
#endif
}

///////////////////////////////////////////////////////////////////////////////////////
void Actions::info() {
	if(!this->switch_nocheck) verifyFileIsReadable(this->mediafile);
	XMP_FileFormat xmpFileFormat=kXMP_UnknownFile;
	SXMPFiles xmpFile;

	if ( !xmpFile.OpenFile(this->mediafile,xmpFileFormat,generalOpenFlags) )
		Log::error("error opening file %s",this->mediafile.c_str());

	std::string out_filepath;
	XMP_OptionBits out_openFlags;
	XMP_FileFormat out_fileFormat;
	XMP_OptionBits out_handlerFlags;

	if (!xmpFile.GetFileInfo(&out_filepath,&out_openFlags,&out_fileFormat,&out_handlerFlags))
		Log::error("error doing GetFileInfo %s",this->mediafile.c_str());

	//FilePath (just verify that identical to what's been used)
	if ( strcmp(out_filepath.c_str(),this->mediafile.c_str()) ) //that's if it NOT matches (!=0 ...)
		Log::warn("media filepath %s does not matches filepath %s obtained from GetFileInfo",
		out_filepath.c_str(),this->mediafile.c_str());

	//openOptions (also verify that identical to what's been used)
	std::string openFlagsString=XMPFiles_OpenOptionsToString(out_openFlags);
	Log::info("openFlags: %s (%X)", openFlagsString.c_str(), out_openFlags);
	if ( generalOpenFlags != out_openFlags )
		Log::warn("out_openFlags (0x%X) differ from those used for open (0x%X)",
		out_openFlags,generalOpenFlags);

	//FileFormat (resolves, usually by way of extension unless specified)
	std::string fileFormatName, fileFormatDescription;
	fileFormatNameToString(out_fileFormat,fileFormatName,fileFormatDescription);
	Log::info("fileFormat: %s (%s,0x%X)",
		fileFormatDescription.c_str(),fileFormatName.c_str(),out_fileFormat);

	//FormatInfo aka "HandlerFlags" (show what is possible with this format)
	std::string formatInfoString=XMPFiles_FormatInfoToString(out_handlerFlags);
	Log::info("formatInfo:%s (0x%X)", formatInfoString.c_str(), out_handlerFlags);

	xmpFile.CloseFile(generalCloseFlags); //(enabled again now that bug 1352603 is fixed)
}

///////////////////////////////////////////////////////////////////////////////////////
void Actions::get() {
	if(!this->switch_nocheck) verifyFileIsReadable(this->mediafile);
	XMP_FileFormat xmpFileFormat=kXMP_UnknownFile;

	SXMPFiles xmpFile;
	std::string xmpDump; //really just the raw string here

	if ( !xmpFile.OpenFile(this->mediafile,xmpFileFormat,generalOpenFlags) )
		Log::error("error opening file %s",this->mediafile.c_str());

	if ( this->switch_compact ) {
		if ( !xmpFile.GetXMP(0,&xmpDump,0))
			Log::warn("file contains no XMP. - says xmpFile.GetXMP()");
		else
			Log::info("%s",xmpDump.c_str());
	} else {
		SXMPMeta xmpMeta; //get meta-object first, then get serialization
		if ( !xmpFile.GetXMP(&xmpMeta,0,0))
			Log::warn("file contains no XMP. - says xmpFile.GetXMP()");
		else {
			xmpMeta.SerializeToBuffer(&xmpDump,
				0, //NOT using kXMP_UseCompactFormat - Use a highly compact RDF syntax and layout.
				0);		//receiving string, options, 0(default) padding
			Log::info("%s",xmpDump.c_str());
		}
	}

	xmpFile.CloseFile(generalCloseFlags); //(enabled again now that bug 1352603 is fixed)
}
///////////////////////////////////////////////////////////////////////////////////////

void Actions::dump() {
	if(!this->switch_nocheck) verifyFileIsReadable(this->mediafile);
	XMP_FileFormat xmpFileFormat=kXMP_UnknownFile;

	SXMPFiles xmpFile;
	std::string xmpDump; //really just the raw string here

	if ( !xmpFile.OpenFile(this->mediafile,xmpFileFormat,generalOpenFlags) )
		Log::error("error opening file %s",this->mediafile.c_str());

	SXMPMeta xmpMeta; //get meta-object first, then get serialization
	if ( !xmpFile.GetXMP(&xmpMeta,0,0))
		Log::warn("file contains no XMP. - says xmpFile.GetXMP()");
	else {
		std::string dump;
		xmpMeta.DumpObject(DumpToString, &dump);
		Log::info( dump );
	}
	
	xmpFile.CloseFile(generalCloseFlags); //(enabled again now that bug 1352603 is fixed)
}


///////////////////////////////////////////////////////////////////////////////////////
void Actions::put() {
	//need read and write
	if(!this->switch_nocheck) verifyFileIsWritable(this->mediafile);

	//first open regular to see if injection possible
	XMP_FileFormat xmpFileFormat=kXMP_UnknownFile;
	SXMPFiles xmpFile;

	if ( !xmpFile.OpenFile(this->mediafile,xmpFileFormat,generalOpenFlags | kXMPFiles_OpenForUpdate) )
		Log::error("error opening file %s",this->mediafile.c_str());

	std::string out_filepath;
	XMP_FileFormat out_fileFormat;
	XMP_OptionBits out_handlerFlags;

	if (!xmpFile.GetFileInfo(0,0,&out_fileFormat,&out_handlerFlags))
		Log::error("error doing GetFileInfo %s",this->mediafile.c_str());

	bool foundXMP = xmpFile.GetXMP( 0, 0, 0);

	//construct the to-be-injected snippet
	std::string xmpMetaString=getStringFromFile(this->xmpsnippet);
	SXMPMeta xmpMeta(xmpMetaString.c_str(),(XMP_StringLen)xmpMetaString.length());

	// append metadata if we found XMP or if we didn't but can inject
	if ( foundXMP == true || (out_handlerFlags & kXMPFiles_CanInjectXMP ) ) {

		if ( !xmpFile.CanPutXMP(xmpMeta) )
			Log::warn("canPutXMP denies I can inject: (xmpFile.CanPutXMP()==false)");

		try {
			xmpFile.PutXMP(xmpMeta); //void unfortunatley, must close file to figure out result...
			xmpFile.CloseFile(generalCloseFlags); // close the file

		} catch ( XMP_Error& e ) {
			Log::error("puttingXMP failed: %s",e.GetErrMsg());
		}
	} else { //handle the error
		//FileFormat (resolves, usually by way of extension unless specified TODO)
		std::string fileFormatName, fileFormatDescription;
		fileFormatNameToString(out_fileFormat,fileFormatName,fileFormatDescription);
		Log::error("the File %s of type %s neither contains XMP nor can it be injected (at least kXMPFiles_CanInjectXMP not returned)",
			this->mediafile.c_str(), fileFormatName.c_str());
	};
}

void Actions::doAction() {
	//do open and close-flags one for all (add ThumbFlag if needed above)
	generalOpenFlags=kXMPFiles_OpenForRead;
	if (this->switch_smart) generalOpenFlags|=kXMPFiles_OpenUseSmartHandler;
	if (this->switch_scan) generalOpenFlags|=kXMPFiles_OpenUsePacketScanning;

	generalCloseFlags=0;
	if (this->switch_safe) generalOpenFlags|=kXMPFiles_UpdateSafely;

	switch (this->actiontype){
		case Actions::VERSION:
			version();
			break;
		case Actions::INFO:
			info();
			break;
		case Actions::PUT: //PutXMP()
			put();
			break;
		case Actions::GET: //GetXMP()
			get();
			break;
		case Actions::DUMP:
			dump();
			break;
		default:
			Log::error("unknown command or not implemented!!");
			break;
	}
}