#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "imageInput.h"

#define BUFFER_SIZE 100
#define FILE_HEADER_STRING "__info2_image_file_format__"

// TODO Implementieren Sie geeignete Hilfsfunktionen für das Lesen der Bildserie aus einer Datei
void setParameters(const char buffer[], unsigned int* imageCount, unsigned int* width, unsigned int* height);
void allocateMemory(GrayScaleImageSeries *s, const int imageCount, const int width, const int height);
// TODO Vervollständigen Sie die Funktion readImages unter Benutzung Ihrer Hilfsfunktionen
GrayScaleImageSeries *readImages(const char *path)
{
    GrayScaleImageSeries *series = NULL;

	// hier Niko Stuff
    // create char array buffer with bytes containing initialization information
    // TODO some kind of logic to get correct address in binary file
    char initBuffer[3];
    /*
	int readBytes = fread(initBuffer, 1, 3, //file);
     */
    unsigned int* imageCount = &(series->count); // sets a pointer for int variable count in struct
    setParameters(initBuffer, imageCount, &(series->images->width), &(series->images->height));
    allocateMemory(series, *imageCount, series->images->width, series->images->height);

    return series;
}

void setParameters(const char buffer[], unsigned int* imageCount, unsigned int* width, unsigned int* height) { // sets the parameters
	*imageCount = (int) buffer[0];
    *width = (int) buffer[1];
    *height = (int) buffer[2];
}
// change this to createMatrix?
void allocateMemory(GrayScaleImageSeries* s, const int imageCount, const int width, const int height) {
	for (int i = 0; i < imageCount; i++) {
		s->images[i].buffer = (unsigned char *) malloc(width * height * sizeof(unsigned char)); // allocates memory for every image in the series
	}
}

// TODO Vervollständigen Sie die Funktion clearSeries, welche eine Bildserie vollständig aus dem Speicher freigibt