#include <string>
#include <cstdlib>
#include <iostream>
using namespace std;


/**
 * \brief Command used for transforming from eps to pdf
 */
enum EpsToPdfProgram
{
	Ghostscript, 	///< Converts and crops
	Eps2Pdf			///< Converts and autorotates but does not crop
};

/**
 * \brief Convert EPS to PDF
 * \param fileInput EPS input file name
 * \param fileOutput PDF output file name
 * \param clean remove temporary intermediate files (the input EPS and the bounding box)
 * \param margin extra pixels when adjusting the size of the figure of the eps file
 * \param program used program
 * \return string with command used for converting to pdf
 */
std::string TransformEpsToPdf(const std::string fileInput, const std::string fileOutput, const bool clean=true, const int margin=5, EpsToPdfProgram program=Ghostscript);

string TransformEpsToPdf(const string fileInput, const string fileOutput, const bool clean, const int margin, EpsToPdfProgram program)
{
	string command="";
	string boxTemporaryFile="";
	if(program==Ghostscript)
	{
		//Calculating the Frame (writing it to temporary file .bbox)
		boxTemporaryFile=fileInput+".bbox";
		command="gs -sDEVICE=bbox -dBATCH -dNOPAUSE "+fileInput+" 2>&1 | grep '%%HiResBoundingBox' | awk '{print $2, $3, $4, $5}'>"+boxTemporaryFile;
		if(system(command.c_str())){;}
		//Opening the .bbox temporary file and loading it to 4-array
		/**
		#bbox[0]=offset vertical superior (empezando desde arriba, apunta hacia abajo)
		#bbox[1]=offset lateral izquierdo (empezando desde la izqda, apunta hacia la dcha)
		#bbox[2]=offset vertical inferior (empezando desde arriba, apunta hacia abajo)
		#bbox[3]=offset lateral derecho (empezando desde la izqda, apunta hacia la dcha)
		#system("inkscape --export-area-drawing --export-pdf="+ file_map + ".pdf \\" + file_map + "_.pdf")
		*/
		Real_t bbox[4];
		ifstream box(boxTemporaryFile.c_str());
		for(int i=0;i<4;++i)
		{
			box >> bbox[i];
			if(i<2)
			{
				bbox[i]-=margin;
			}
			else
			{
				bbox[i]+=margin;
			}
		}
		box.close();
		
		//Adapting the size and converting to pdf
		command="gs -q -o "+fileOutput+" -sDEVICE=pdfwrite -c "+ "\"[/CropBox [";
		string espacio="";
		for(int i=0;i<4;++i)
		{
			command+=espacio+d2s(bbox[i]+margin);
			espacio=" ";
		}
		command+="] /PAGES pdfmark\" -f "+ fileInput;
	}
	else if(program==Eps2Pdf)
	{
		command="epstopdf --autorotate=All -outfile="+fileOutput+" "+fileInput;
	}
	else
	{
		cout << "Warning in CommonTools::TransformEpsToPdf: not valid program type.\n";
		return "";
	}
	if(system(command.c_str())){;}
	
	if(clean)
	{
		string commandclean;
		commandclean="rm "+fileInput;
		if(system(commandclean.c_str())){;}
		if(program==Ghostscript)
		{
			commandclean="rm "+boxTemporaryFile;
			if(system(commandclean.c_str())){;}
		}
	}
	if(DEBUG)
	{
		cout << "Note in CommonTools:TransformEpsToPdf: " << fileOutput << " generated.\n";
	}
	//Return converting string command for appending it to the fileTemplate
	return command;
}