#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "config.h"

#if STUDY_SESSION_25
#define TIMER_S 25
#endif


#if STUDY_SESSION_50
#define TIMER_S 50
#endif


#if BREAK_TIME_5
#define TIMER_B 5
#endif


#if BREAK_TIME_10
#define TIMER_B 10
#endif


#define STUDY 0
#define BREAK 1

char help_msg[] = "\n-s integer\t\tsets length of studying session, in minutes\n"
                    "-b integer\t\tsets length of breaks, in minutes\n"
                    "-r integer\t\tnumber of sessions\n"
                    "-h        \t\tprints help message lol \n\n"; 

int n_repeat = 4, time_elapsed = 0, timer_s = TIMER_S, timer_b = TIMER_B, check = 0;
long time_started = 0;


void start_timer(int);
void countdown(long, short, char*);



int main(int argc, char *argv[]){
  
  if( argv[1] != NULL ){

    for(int i = 1; i < argc ; i++){

      if( *(argv[i]+1) == 's')
        timer_s = atoi(argv[i+1]);

      if( *(argv[i]+1) == 'b' )
        timer_b = atoi(argv[i+1]);

      if( *(argv[i]+1) == 'r' )
        n_repeat = atoi(argv[i+1]);


      if( *(argv[i]+1) == 'h'){
        printf("%s", help_msg);
        exit(0);
      }

    }
  }

   

  system("clear");

  for(int i = 1; i <= n_repeat; i++){
    
    printf("Session %d of %d\n\n", i, n_repeat);

    start_timer(STUDY);
    system("notify-send 'POMODORO' 'IT IS TIME FOR A BREAK' ");
    start_timer(BREAK);

    printf("%c[3F%c[2K%c[G", 27, 27, 27);
  }


  return 0;
}







void start_timer(int x){
  
  time_started  = time(0);

  if(x == STUDY)
    countdown(time_started, timer_s, "STUDY SESSION");
     
  if(x == BREAK)
    countdown(time_started, timer_b, "BREAK");
  

}


void countdown(long time_started, short timer, char *type){

  struct timespec tim;
    tim.tv_sec  = 0;
    tim.tv_nsec = 333000000;

  int count_timer = 1;
  short mins = 0, secs = 0;


  while(count_timer > 0){
   
      nanosleep(&tim, NULL);
      short old_secs = secs;

      time_elapsed = time(0) - time_started;
    
      count_timer = (timer * 60) - time_elapsed;

      mins = count_timer / 60;
      secs = count_timer - mins * 60;


      if(old_secs != secs){
        printf("%s => %d:%02d\n", type, mins, secs);
        printf("%c[1F%c[2K%c[G", 27, 27, 27); 
      }

    }
}