//
// Created by gfuse on 04/06/22.
//

#ifndef P_46_TANGUNT_BUG_OBSTACLE_AVOIDANCE_READ_HPP
#define P_46_TANGUNT_BUG_OBSTACLE_AVOIDANCE_READ_HPP
#include <vector>
#include <sys/types.h>
#include <sys/stat.h>
template<typename T,int N>
class DATA_FILE
{
public:
    DATA_FILE(std::string path){
        in_ =fopen(path.c_str(),"r+");
        assert(in_ && "path is empty in DATA_FILE. Please notice you need to specify the path from project directory like /data/data.txt");
/*        out_=fopen("/result.txt").c_str(),"w+");
        assert(out_ && "path is empty in DATA_FILE");
        chmod((std::string(getenv("HOME"))+"/result.txt").c_str(), ACCESSPERMS);*/
    };
    ~DATA_FILE(){
        fclose(in_);
//        fclose(out_);
    };
    bool read(std::array<T,N>& in){
        double count=0;
        if(fscanf(in_,"%le",&count)<1)return false;
        for(int i=0;i<N;++i){
            T value;
            fscanf(in_,",%f",&value);
            in.at(i)=value;
        }
        fscanf(in_,"\n");
        return true;
    };
    void write(std::array<T,N>& out){
        fprintf(out_,"%ld,",count);
        for(int i=0;i<N;++i)fprintf(out_,"%f,",out[i]);
        fprintf(out_,"\n");
        ++count;
    };
    void write(std::array<T,N>& out,T& error){
        fprintf(out_,"%ld,",count);
        for(int i=0;i<N;++i)fprintf(out_,"%f,",out[i]);
        fprintf(out_,", ,");
        fprintf(out_,"%f,",error);
        fprintf(out_,"\n");
        ++count;
    };

private:
    FILE* in_;
    FILE* out_;
    size_t count=0;
};

#endif //P_46_TANGUNT_BUG_OBSTACLE_AVOIDANCE_READ_HPP