#include <iostream>
#include "DefaultClock.h"
#include <stdio.h>

#include <cstring>
#include <time.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#define ONEGB (1000000000)


#define READ_SYSTEM_CALL 0
#define WRITE_SYSTEM_CALL 1
#define OPEN_SYSTEM_CALL 2
#define CLOSE_SYSTEM_CALL 3


using AccurateClock::DefaultClock;
using std::cout;
using std::endl;

size_t my_write(int fd, const void *buffer, size_t size) {
          ssize_t returnValue;
              returnValue = syscall(WRITE_SYSTEM_CALL,fd,buffer,size);
                        return returnValue;
};

int my_open(const char *filename, int flag, mode_t mode){
          int returnValue;
              returnValue = syscall(OPEN_SYSTEM_CALL, filename, flag, mode);
                        return returnValue;
};


int my_close(const char *filename, int flag, mode_t mode){
          int returnValue;
              returnValue = syscall(CLOSE_SYSTEM_CALL, filename, flag, mode);
                          return returnValue;
};


size_t my_read(int fd, const void *buffer, size_t size) {
          ssize_t returnValue;
              returnValue = syscall(READ_SYSTEM_CALL,fd,buffer,size);
                          return returnValue;
};



int main(int argc, char *argv[]) {

        int buffer_size;
        char * file_name;
        int write_count;

        if(argc != 7){
                return 0;
        }

        for (int i = 1 ;i < argc - 1; i++){
                if(strcmp(argv[i], "--buffer_size") == 0){
                        buffer_size = atoi(argv[i+1]);
                }

                else if(strcmp(argv[i],"--file_name") == 0){
                        file_name = argv[i+1];
                }
                else if(strcmp(argv[i],"--write_count") == 0){
                        write_count = atoi(argv[i+1]);
                }
        }
        printf("\n%s, %d, %d\n", file_name, buffer_size, write_count);
  for (int i = 1; i < argc -1; i++){
    if (strcmp(argv[i],"--write_count") == 0){
    auto clock = DefaultClock();
   // int Buffer = strtol(argv[1], NULL, 10);
    char BuffChar[buffer_size];
    int myDirectory;
    myDirectory = my_open(file_name,O_RDWR|O_CREAT|O_TRUNC,0666);
    double timesToWrite = (buffer_size);
    auto start = clock.getTime();
    for(int i = 0; i < timesToWrite; i++)
     {
            my_write(myDirectory, BuffChar, buffer_size);
    }




    auto end = clock.getTime();

    auto duration = end - start;

    duration.print(cout << "Program took ");

    cout << endl;

    cout << "start time: ";
    start.print(cout);
    cout << endl;

    cout << "end time: ";
    end.print(cout);
    cout << endl;
    }



    else if (strcmp(argv[i],"--read_count") == 0){
    auto clock = DefaultClock();
   // int Buffer = strtol(argv[1], NULL, 10);
    char BuffChar[buffer_size];
    int myDirectory;
    myDirectory = my_read(file_name,O_RDWR|O_CREAT|O_TRUNC,0666);
    double timesToWrite = (buffer_size);
    auto start = clock.getTime();
    for(int i = 0; i < timesToWrite; i++)
    {
            my_read(myDirectory, BuffChar, buffer_size);
    }

    auto end = clock.getTime();

    auto duration = end - start;

    duration.print(cout << "Program took ");

    cout << endl;

    cout << "start time: ";
    start.print(cout);
    cout << endl;

    cout << "end time: ";
    end.print(cout);
    cout << endl;
    }

  }
    return 0;
}