#include <stdio.h>
#include "master.h" 

int MASTERID = 0;
int activeNodes[10]; //nodes active in the network. Assumes that all nodes have a unique id.
char *currentPrograms[100]; //current programs : array of char pointers, each is a program string. 

void main()
{
  initCurrentProgramsArray(); 

  int newProgramIndex =  manageUserInput(); 
  printf("New program : %s \n", currentPrograms[newProgramIndex]); 
/* 
  for(;;)
  {
      manageUserInput(); 

    printf("Entrez le nom d'un programme : \n >> ") ; 
    scanf("%s", program ); 

    
    printf(" %d ", sizeof(program)); 
    addToCurrentPrograms(program);

    //calls roundRobin to decide where it should be executed
    //sends it over the network
    //gets program return output and print


  }*/ 
}

void initCurrentProgramsArray()
{
    int i=0; 
    while(i<sizeof(currentPrograms)){
        currentPrograms[i] = NULL; 
        i++; 
    }
}

// adds the program string to current program array, and returns the index where it was added. 
int addToCurrentPrograms(char* newProgram){
    int i=0; 
    while(i<sizeof(currentPrograms))
    {
        if(currentPrograms[i] == "-1"){
            currentPrograms[i] = newProgram; 
            printf("Empty program at %d", i); 
            break; 
        }
        i++;  
    }
    return i ; 
}

int commandSlaveNode(int programIndex)
{
  return 1;
}

int roundRobin()
{
  return 1;
}

void printProgramOutput(char programName[])
{

}

/********************* 
 * UTIL ARRAY FUNCTIONS 
 *********************/ 

int returnsSizeOfOccupiedArray(char array[]){
    int i=0; 
    while(i<sizeof(array))
    {
        if(array[i]==NULL)
            break;
        i++; 
    }
    return i; 
}

// copies content of bigger array to smaller one, fitting everything it cans in the smaller array.
void copyToSmallerArray(char bigArray[], char smallArray[])
{
    int i=0; 
    while(i<sizeof(smallArray))
    {
        smallArray[i]=bigArray[i]; 
        i++;
    }
}

int manageUserInput()
{
  char program[50];
  printf("Entrez un programme à exécuter : \n"); 
  scanf("%s", program ); 
  char smallarray[returnsSizeOfOccupiedArray(program)]; 
  copyToSmallerArray(program, smallarray); 

  int index = addToCurrentPrograms(smallarray); 
  return index; 
}