#include "include/fileGestion.h"

/**
 * @brief function that delete nRow lign in the beginning of the file rawData.csv . This function is necessary to not deal with the same ligns over and over
 *
 * @param nRow number of lign in the beginning of the file rawData.csv that has to be delete
 */
void clearRawData(int nRow)
{
    char buffer[256];
    FILE *f = fopen("newFile.csv", "w+");
    FILE *g = fopen("rawData.csv", "r");
    for (int i = 0; i < nRow; i++)
    { // first the program read the first nRow ligns of the csv file but do nothing
        fgets(buffer, sizeof buffer, g);
    }
    while (1)
    { // then, till the end of the csv file it copy the lign to a new csv : newFile.csv
        if (!fgets(buffer, sizeof buffer, g))
            break;
        fprintf(f, "%s", buffer);
    }
    remove("rawData.csv");
    rename("newFile.csv", "rawData.csv"); // finally we remove the original file and rename the new one to replace rawData.csv
    fclose(f);
    fclose(g);
}
/**
 * @brief use to write one lign in the file "fileName"
 *
 * @param array array that contaign all the values to write in the file
 * @param nCol size of the array (correspond to the number of captor used)
 */
void appendDataInFile(char *fileName, double array[], int nCol)
{
    FILE *f = fopen(fileName, "a+");
    for (int i = 0; i < nCol; i++)
    {
        if (i < nCol - 1)
        {
            fprintf(f, "%f , ", array[i]);
        }
        else
        {
            fprintf(f, "%f\n", array[i]);
        }
    }
    fclose(f);
}