#include "getArray.h"
#include "fileGestion.h"
//#include <string.h>

long **get(int N, int M) /* Allocate the array */
{
    /* Check if allocation succeeded. (check for NULL pointer) */
    int i;
    long **array;
    array = (long **) malloc(N*sizeof(long *));
    for(i = 0 ; i < N ; i++)
        array[i] = (long *) malloc( M*sizeof(long) );
    return array;
}

void fillArrayWithRawData(char *rawDataFileName,long** p, int N, int M) {
    int i, j;
    char *buffer;
    size_t bufsize = 200;
    buffer = (char *)malloc(bufsize * sizeof(char));
    char* token;

    FILE *f = fopen(rawDataFileName,"r");

    for(i = 0 ; i < N ; i++){
        if (!getline(&buffer, &bufsize, f)) break; // condition d'arret de la boucle si fichier fini
        j = 0;
        while((token = strsep(&buffer,",")) != NULL){     // séparation valeur par virgule initiale : csv
            p[i][j] = atoi(token);
            j++;
        }
    }
    fclose(f);

}
/**
 * @brief print all the element of a bidimensionnal array p of shape : N x M
 */
void printArrayData(long** p, int N, int M) {
    int i, j;
    for(i = 0 ; i < N ; i++){
        printf("line n°%d : " , i);
        for(int j = 0 ; j < M ; j++){
            printf("%d , " , p[i][j]);
            if(j==(M-1)) printf("\n");
        }
    }
}
/**
 * @brief verify if all the element of an array are not NULL, return 
 * 
 * @param p array to check
 * @param N number of rows in p
 * @param M number of columns in p
 * @return true if the array contaign no NULL element
 * @return false if at least one element is null
 */
bool checkArrayFullyFill(long **p, int N , int M){
    for(int i  = 0 ; i < N ; i++){
            if(p[i][0] == '\0'){ return false; }
    }
    return true;
}

/**
 * @brief free memory allocate to an array p
 * 
 * @param p array to free memory
 * @param N number of rows in array
 */
void freeArray(long **p, int N) {
    int i;
    for(i = 0 ; i < N ; i++)
        free(p[i]);
    free(p);
}

/**
 * @brief Get the Raw Data Array object
 * 
 * @param rawDataFileName name of the file to use to file the array
 * @param N numbers of rows to have i the array
 * @param M numbers of columns to have i the array
 * @return long** the array fill with raw data
 */
long **getRawDataArray(char* rawDataFileName , int N , int M){
    long **p;
    p = get(N, M);
    fillArrayWithRawData(rawDataFileName,p ,N, M);
    if(checkArrayFullyFill(p,N,M)){
        //clearRawData(N);
        return p;
    }
    else{
        return NULL;
    }
}