#include "mpt_dataIterator.h"

#include <string>
#include <iosfwd>
#include <sstream>
#include <iostream>
#include <fstream>

mpt_dataIterator::mpt_dataIterator( std::string &filepath ) : ifstr( filepath.c_str() ), lines( ifstr )
{

}

mpt_dataIterator::mpt_dataIterator( std::istream &_is ) : lines( _is )
{

}

mpt_dataIterator::~mpt_dataIterator()
{

}

unsigned int
mpt_dataIterator::line()
{
    return lines.line();
}

bool
mpt_dataIterator::eof()
{
    return lines.eof();
}

bool
mpt_dataIterator::nextDataLine( std::string &filename, float &eye_angle, mpt::eyes &_eyes )
{
    if( lines.eof() )
        return false;

    std::string dataline = lines.nextLine();

    if( (dataline.length() > 0) && ('#' != dataline.at(0)) )
    {
        char buf[256];
        std::istringstream instr( dataline.c_str() );

        // parse the data line
        // /Users/testbot/Images/SanDiego/Females/US_SanDiego_1632821.jpg -13.862246    Left: {110.982, 77.7905}    Right: {66.7772, 88.6993}
        instr >> filename >> eye_angle;
        instr.getline( buf, 256, '{' ); // read up to the first eye data bracket
        instr >> _eyes.left.x;
        instr.get(); // Should be the comma
        instr >> _eyes.left.y;
        instr.getline( buf, 256, '{' ); // read up to the second eye data bracket
        instr >> _eyes.right.x;
        instr.get(); // Should be the comma
        instr >> _eyes.right.y;

        return true;
    }
    else
    {
        return false;
    }
}