#ifndef FDPROV_H
#define FDPROV_H

#include "dataProvider.h"
#include "easylogging++.h"
#include <string>
#include <iostream>
#include <fstream>

// Rank qid features

class FileDP:public DataProvider
{
private:
    std::string fname;
    std::ifstream fin;
public:
    FileDP(std::string fn=""):fname(fn){};
    virtual int getDataSet(DataList &out);
    virtual int open(){fin.open(fname); eof=false;return 0;};
    virtual int close(){fin.close();return 0;};
};

// label features

class RidFileDP:public DataProvider
{
private:
    std::string fname;
    std::ifstream fin;
    DataList d;
    bool read;
    int pos;
    int qid;
public:
    RidFileDP(std::string fn=""):fname(fn){read=false;};
    void readEntries();
    int getfSize() { if(!read) readEntries(); return d.getfSize();};
    int getpSize();
    virtual int getDataSet(DataList &out);
    virtual int open(){fin.open(fname); eof=false;return 0;};
    virtual int close(){fin.close(); d.clear();return 0;};
    void take(int n,std::vector<DataEntry*> &a,std::vector<DataEntry*> &b);
};

#endif