#include "power.h"
#include "getArray.h"
#include "fileGestion.h"
#include "initialParameters.h"
#include "queue.h"

/**
 * @brief realize the power calcul
 * 
 * @param p array with all the values that will be used for the calcul
 * @param powerArray array where results are stocked
 */
void powerCalculation(long **p, double powerArray[]){
    for(int i = 1; i < nCol; i++){
        int j = 0;
        powerArray[i] = 0;
        while(j < nRow-1){
            double aire  = ( pow(p[j][i],2) + pow(p[j+1][i],2) ) / 2 * period;
            powerArray[i] += aire;
            j++;
        }
        powerArray[i] *= invTimeBandWidth;
    }
}

/**
 * @brief function that realize all the action to write one lign in the file powerData.csv
 * 
 * @param rawDataFileName name of the raw data file to use to realize the calcul
 * @param N number of rows in the file
 * @param M number of columns in the file
 */
double * power(char* rawDataFileName){
    long **p = getRawDataArray(rawDataFileName);
    double pw[nCol-1];
    if(p !=NULL){
        powerCalculation(p,pw);
        appendDataInFile("powerData.csv",pw,nCol-1);
        freeArray(p,nRow);
    }
    return pw;
}